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Engine Cooling
- Porsche 996 C2 3.4L 1997-08/01
- Porsche 996 C4 3.4L 1997-08/01
- Porsche 996 C2 3.6L 09/01-2005
- Porsche 996 C4 3.6L 09/01-2005
- Porsche 996 GT3 MKI 1999-02
- Porsche 996 GT3 MKII 2003>>
- Porsche 996 GT3 RS 2003-04
Racing and high performance radiators for all Porsche models make a great performance upgrade as well as an incredibly durable and reliable OE replacement.
SET OF 2, for Left and Right side.
Fits:
Porsche 996 C2
Manual cars (not C4S)
Porsche 996 C4
Manual cars (not C4S)
Porsche 996 GT3 1997-05
Cross reference numbers:
• LEFT: 8MK376714291 / 99610613151 / 99610613181
• RIGHT: 8MK376713791 / 99610613251 / 99610613282
CSF strives to build and engineer the most advanced, efficient, and reliable cooling systems in the world. All-aluminium 100% TIG welded, CNC machined brackets, mounting pins and "Quick-Connect" inlet/outlet pipes, Drop-in fit requiring no modifications , 2 row core with B-Tube technology (+20%), 1 hour hand polished, Track Tested & Proven in 110°F, ISO 9001 certified cooling system manufacture.
ENGINEERING
• "B-Tube" Technology - Most efficient tube in the world
• High Efficiency Louvered Fin
• OE radial and deep drawn aluminium end tanks
• Wind tunnel tested for optimal radiator core cooling performance
• Stronger joint design for mountings, fan shrouds & condensers
• OE Specific Mounting
• "Drop-in" fitment requiring no modifications
• CNC Machined brackets and fittings
• Racing Style all-aluminium drain plug
MANUFACTURING
• Brazed in CAB Furnace
• ISO 9001/9002 certification
• Privately owned factories with full "In house" tool rooms
• "Master Class" TIG welding
TESTING
• Individually leak tested
• Vibration cycle tested
• Thermal cycle tested
• Burst pressure cycle tested 10,000 times for strength
• Salt spray tested for corrosion protection
Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.
7044KIT.1
The product you are viewing cross references to these numbers
This kit is comprised of the following items:
- Porsche Boxster S 986 3.2L 1999-02
- Porsche Boxster S 986 3.2L 2003-04
- Porsche 996 C2 3.4L 1997-08/01
- Porsche 996 C4 3.4L 1997-08/01
- Porsche 996 C2 3.6L 09/01-2005
- Porsche 996 C4 3.6L 09/01-2005
- Porsche 996 GT3 MKI 1999-02
- Porsche 996 GT3 MKII 2003>>
- Porsche 996 GT3 RS 2003-04
CSF Complete Performance Radiator Kit – Left, Right and Centre
This complete high-performance cooling kit from CSF provides
a full radiator replacement solution for Porsche 996 Carrera 2 and
Carrera 4 Tiptronic (excluding C4S), the GT3 / GT3 RS and 986 Boxster S models. Designed as a direct OE replacement with
motorsport-grade durability, the kit includes all three radiators along with
essential installation components.
Fits:
- Porsche Boxster S 986 3.2L 1999-02
- Porsche Boxster S 986 3.2L 2003-04
- Porsche 996 C2 3.4L 1997-08/01
- Porsche 996 C4 3.4L 1997-08/01
- Porsche 996 C2 3.6L 09/01-2005
- Porsche 996 C4 3.6L 09/01-2005
- Porsche 996 GT3 MKI 1999-02
- Porsche 996 GT3 MKII 2003>>
- Porsche 996 GT3 RS 2003-04
This makes it an ideal upgrade for ageing cooling systems or for drivers who want improved cooling performance and long-term reliability.
Kit Contents
• Left radiator
• Right radiator
• Centre radiator
• Radiator hoses
• Hose clips
• Radiator mounting buffers
• Blanking caps
This comprehensive kit allows you to replace the entire radiator system in one installation, ensuring optimal cooling performance and reducing the risk of future leaks or component failures.
Cross Reference Numbers
• LEFT: 99610613151 / 99610613181
• RIGHT: 99610613251 / 99610613282
• CENTRE: 99610603751 / 99610603752 / 99610603752
What This Radiator Kit Does
The Porsche 996 cooling system relies on three front-mounted radiators to dissipate heat from the engine coolant. These radiators maintain stable engine operating temperatures by transferring heat away from the coolant through airflow across the radiator core.
A properly functioning radiator system helps:
• Prevent engine overheating
• Maintain optimal engine performance
• Protect cylinder heads and gaskets
• Improve cooling during heavy traffic or hot weather
• Support track and performance driving conditions
Why Porsche 996 Radiators Fail
Over time, original radiators can suffer from:
- Road debris damage
- Corrosion and coolant contamination
- Plastic end tank fatigue
- Blocked cooling cores
Replacing all three radiators together ensures balanced cooling performance and prevents repeated labour costs.
Why Upgrade to CSF Performance Radiators?
All-Aluminium Motorsport Construction
CSF radiators are engineered using full aluminium construction with precision
welding and reinforced joints, improving strength and durability compared with
standard replacements.
High Efficiency Core Design
The advanced 2-row core with CSF B-Tube technology increases cooling capacity
by approximately 20 percent compared with conventional radiator tube designs.
True Drop-In Installation
Designed as OE-specific replacements with correct mounting points and
quick-connect inlet and outlet pipes for easy installation without
modification.
Track-Tested Reliability
These radiators have been tested under extreme conditions, including high
ambient temperatures and track environments.
Engineering Highlights
• B-Tube technology for maximum heat transfer efficiency
• High efficiency louvered fin design
• OE radial and deep drawn aluminium end tanks
• Wind tunnel tested core for optimal airflow cooling
• Reinforced mounting design for fan shrouds and condensers
• CNC machined brackets and fittings
• Racing style all aluminium drain plug
• Direct OE fitment requiring no modifications
Manufacturing Quality
• Brazed in CAB furnace for strength and consistency
• ISO 9001 / ISO 9002 certified production
• Dedicated in-house tooling and engineering facilities
• Master-class TIG welding for precision joints
Testing and Quality Control
• Individual leak testing
• Vibration cycle testing
• Thermal cycle testing
• Burst pressure testing repeated 10,000 times
• Salt spray corrosion resistance testing
Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.
7044KIT.2
The product you are viewing cross references to these numbers
This kit is comprised of the following items:
- Porsche Boxster 986 2.5L 1997-99
- Porsche Boxster 986 2.7L 1999-02
- Porsche Boxster S 986 3.2L 1999-02
- Porsche Boxster 986 2.7L 2003-04
- Porsche Boxster S 986 3.2L 2003-04
- Porsche 996 C2 3.4L 1997-08/01
- Porsche 996 C4 3.4L 1997-08/01
- Porsche 996 C2 3.6L 09/01-2005
- Porsche 996 C4 3.6L 09/01-2005
- Porsche 996 GT3 MKI 1999-02
- Porsche 996 GT3 MKII 2003>>
- Porsche 996 GT3 RS 2003-04
Racing and high performance radiators for all Porsche models make a great performance upgrade as well as an incredibly durable and reliable OE replacement.
SET OF 2, for Left and Right side.
Fits:
Porsche 996 C2
Porsche 996 C4
Porsche 996 GT3 1997-05
Porsche 986 Boxster 1997-2004
Cross reference numbers:
• LEFT: 8MK376714291 / 99610613151 / 99610613181
• RIGHT: 8MK376713791 / 99610613251 / 99610613282
CSF strives to build and engineer the most advanced, efficient, and reliable cooling systems in the world. All-aluminium 100% TIG welded, CNC machined brackets, mounting pins and "Quick-Connect" inlet/outlet pipes, Drop-in fit requiring no modifications , 2 row core with B-Tube technology (+20%), 1 hour hand polished, Track Tested & Proven in 110°F, ISO 9001 certified cooling system manufacture.
ENGINEERING
• "B-Tube" Technology - Most efficient tube in the world
• High Efficiency Louvered Fin
• OE radial and deep drawn aluminium end tanks
• Wind tunnel tested for optimal radiator core cooling performance
• Stronger joint design for mountings, fan shrouds & condensers
• OE Specific Mounting
• "Drop-in" fitment requiring no modifications
• CNC Machined brackets and fittings
• Racing Style all-aluminium drain plug
MANUFACTURING
• Brazed in CAB Furnace
• ISO 9001/9002 certification
• Privately owned factories with full "In house" tool rooms
• "Master Class" TIG welding
TESTING
• Individually leak tested
• Vibration cycle tested
• Thermal cycle tested
• Burst pressure cycle tested 10,000 times for strength
• Salt spray tested for corrosion protection
Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.
7044KIT
The product you are viewing cross references to these numbers
This kit is comprised of the following items:
- Porsche Boxster 986 2.5L 1997-99
- Porsche Boxster 986 2.7L 1999-02
- Porsche Boxster S 986 3.2L 1999-02
- Porsche Boxster 986 2.7L 2003-04
- Porsche Boxster S 986 3.2L 2003-04
- Porsche 996 C2 3.4L 1997-08/01
- Porsche 996 C4 3.4L 1997-08/01
- Porsche 996 C2 3.6L 09/01-2005
- Porsche 996 C4 3.6L 09/01-2005
- Porsche 996 GT3 MKI 1999-02
- Porsche 996 GT3 MKII 2003>>
- Porsche 996 GT3 RS 2003-04
Racing & high performance radiators for all Porsche models. CSF strives to build and engineer the most advanced, efficient, and reliable cooling systems in the world. All-aluminium 100% TIG welded, CNC machined brackets, mounting pins and "Quick-Connect" inlet/outlet pipes, Drop-in fit requiring no modifications, 2 row core with B-Tube technology (+20%), 1 hour hand polished, Track Tested & Proven in 110°F, ISO 9001 certified cooling system manufacture.
ENGINEERING
"B-Tube" Technology - Most efficient tube in the world
High Efficiency Louvered Fin
OE radial and deep drawn aluminium end tanks
Wind tunnel tested for optimal radiator core cooling performance
Stronger joint design for mountings, fan shrouds & condensers
OE Specific Mounting
"Drop-in" fitment requiring no modifications
CNC Machined brackets and fittings
Racing Style all-aluminium drain plug
MANUFACTURING
Brazed in CAB Furnace
ISO 9001/9002 certification
Privately owned factories with full "In house" tool rooms
"Master Class" TIG welding
TESTING
Individually leak tested
Vibration cycle tested
Thermal cycle tested
Burst pressure cycle tested 10,000 times for strength
Salt spray tested for corrosion protection
Cross reference numbers
Left: 8MK376714291 = 99610613151
Right: 8MK376713791 = 99610613251
Centre: 8MK376716651 , 99610603751, 99610603750,
Fits:
Porsche 996 C2
Porsche 996 C4
Porsche 996 GT3 1997-05
Porsche 986 Boxster S
Porsche 986 Boxster Tiptronic
Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.
RADKIT99603.CSF
The product you are viewing cross references to these numbers
This kit is comprised of the following items:
- Porsche Boxster 986 2.5L 1997-99
- Porsche Boxster 986 2.7L 1999-02
- Porsche Boxster S 986 3.2L 1999-02
- Porsche Boxster 986 2.7L 2003-04
- Porsche Boxster S 986 3.2L 2003-04
- Porsche 996 C2 3.4L 1997-08/01
- Porsche 996 C4 3.4L 1997-08/01
- Porsche 996 C2 3.6L 09/01-2005
- Porsche 996 C4 3.6L 09/01-2005
- Porsche 996 GT3 MKI 1999-02
- Porsche 996 GT3 MKII 2003>>
- Porsche 996 GT3 RS 2003-04
Upgrade your Porsche’s cooling performance with this premium radiator and A/C condenser set from CSF - engineered for enhanced heat management, durability, and reliability on both the street and track.
Fits:
- Porsche 996 911 (Carrera, 4, 4S, Targa, & GT3) 1999-2005
- Porsche 986 Boxster (Base, S, Roadster, & Roadster S) 1997-2005
Cross reference numbers:
A/C Radiators: 9975739101, 99657311100
Water Radiator LEFT: 8MK376714291 / 99610613151 / 99610613181
Water Radiator IGHT: 8MK376713791 / 99610613251 / 99610613282
Set Includes:
• 2 × CSF 7044 All-Aluminium Coolant Radiators - high-performance water cooling radiators designed specifically for Porsche 996, Boxster 986, and GT3 models. Built with 100% TIG-welded aluminium, CNC-machined brackets and B-Tube core technology for increased airflow and superior coolant heat dissipation. Drop-in fit requires no modifications and supports both left & right side installations.
• 2 × CSF 8381 A/C Condensers - direct-fit aluminium air conditioning radiators that outperform OEM units. Featuring a modern parallel-flow core and multi-louvered fins for improved refrigerant cooling, optimized airflow to the engine radiator, and increased overall A/C efficiency.
Performance Benefits:
• Enhanced cooling capacity for coolant and refrigerant systems - ideal for high-heat conditions, spirited driving, and track use.
• Superior heat exchange performance thanks to optimized core designs and precision aluminium construction.
• Improved engine reliability and A/C performance, reducing overheating and maintaining consistent operating temperatures.
• OEM-plus quality that fits like stock but performs like a high-end upgrade.
Perfect For:
• Porsche enthusiasts looking to replace ageing or underperforming radiators and condensers - especially on Carrera, C4, GT3, Boxster, and other 996/986 variants.
• Upgrade both your cooling and air conditioning systems in one complete, performance-oriented package - keep your Porsche running cooler and functioning stronger with CSF quality.
Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.
RADKIT996-986.CSF
The product you are viewing cross references to these numbers
This kit is comprised of the following items:
- Porsche 996 TURBO 2000-05
- Porsche 996 GT2 2001-05
- Porsche 996 GT3 MKI 1999-02
- Porsche 996 GT3 MKII 2003>>
- Porsche 996 GT3 RS 2003-04
Fits:
Porsche 996 Turbo / GT2 2001-05
Porsche 996 GT3 1999-05
Click 'Zoom in' for large parts diagram.
Diagram ref no 19, 20, 21, 22
Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.
99610652973
The product you are viewing cross references to these numbers
This kit is comprised of the following items:
- Porsche 996 C2 3.6L 09/01-2005
- Porsche 996 C4 3.6L 09/01-2005
- Porsche 996 C4S 3.6L 09/01-2005
- Porsche 996 TURBO 2000-05
- Porsche 996 GT2 2001-05
- Porsche 996 GT3 MKII 2003>>
- Porsche 996 GT3 RS 2003-04
- Porsche 997 MK1 Carrera 2 3.6L 2005-08
- Porsche 997 MK1 Carrera 2S 3.8L 2005-08
- Porsche 997 MK1 Carrera 4 3.6L 2005-08
- Porsche 997 MK1 Carrera 4S 3.8L 2005-08
- Porsche 997 MK1 TURBO 2007-09
- Porsche 997 MK1 GT3 / GT3 RS 2007-09
- Porsche 997 MK1 GT2 2007-09
- Porsche 997 MKII Carrera C2 3.6L 2009-12
- Porsche 997 MKII Carrera C4 3.6L 2009-12
- Porsche 997 MKII Carrera C2S 3.8L 2009-12
- Porsche 997 MKII Carrera C4S 3.8L 2009-12
- Porsche 997 MKII GT3 / GT3 RS 2010-11
- Porsche 997 MKII Turbo 2010-13
This kit includes a direct-fit coolant expansion tank, pressure cap, long-life red antifreeze, and a coolant level sensor, giving you the essential components needed to refresh the coolant reservoir side of the engine cooling system with parts that match the original equipment specifications.
Fits:
Porsche 996 3.6L C2 / C4 / C4S 2001 - 2005
Porsche 996 Turbo 2001 - 2005
Porsche 996 GT2 2001 - 2005
Porsche 996 GT3 MKII / GT3 RS 2001 - 2005
Porsche 997.1 2005 - 2008 all models
Porsche 997.2 2009 - 2012 all models
Diagram ref no 1, 2, 3, 4, 5, 13, 14, 17.
The core expansion tank included - part 99610615704 - is designed for Porsche 911 models (996 & early-mid 997 generations) from roughly 2001 to 2012 family vehicles when equipped with the matching cooling setup. It is precision-moulded for proper hose and sensor connections. Always double-check fitment with your vehicle’s year, model and engine before ordering.
The Engine Coolant Expansion Tank Kit brings together the key components responsible for reliable coolant overflow control, pressure sealing, fluid protection, and level monitoring:
• 99610615704/1 × 1 – OE Match Coolant Expansion Tank incl. Cap (99610644704): Precision-matched coolant reservoir engineered to replicate the original Porsche expansion tank for the 911 (996/997) cooling system. Correct pressure cap that seals the expansion tank and helps maintain proper system pressure to optimise coolant performance.
• 00004330194 × 5 – Comma Antifreeze 1 L Red Concentrate (5-Year Protection): High-quality coolant concentrate designed for long life protection against corrosion, freeze, and boil when mixed with distilled water.
• 99764150300/1 × 1 – OE Match Coolant Level Sensor: that fits into the expansion tank, monitoring coolant level and triggering alerts if it falls below safe thresholds.
Together, these parts provide a comprehensive OE Match solution for maintaining or overhauling your cooling system’s expansion reservoir assembly.
Coolant expansion tanks can become brittle and crack over time due to heat cycling, stringently affecting coolant containment and pressure regulation. Old or degraded antifreeze also loses protective properties against corrosion and thermal stress. A failing level sensor can result in inaccurate or missing low-coolant warnings, increasing risk of overheating and engine damage. By replacing all key components with OE Match quality parts, you help maintain proper cooling function, consistent performance, and long-term reliability.
Replace this kit when you notice any of the following:
• Cracks, leaks or deformation in the expansion tank
• Pressure cap no longer seals or maintains system pressure
• Coolant appears contaminated, sludgy or past its service life
• Frequent coolant top-ups are required without visible external leaks.
Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.
COOLTANKKIT997.2
The product you are viewing cross references to these numbers
This kit is comprised of the following items:
- Porsche 996 C2 3.6L 09/01-2005
- Porsche 996 C4 3.6L 09/01-2005
- Porsche 996 C4S 3.6L 09/01-2005
- Porsche 996 TURBO 2000-05
- Porsche 996 GT2 2001-05
- Porsche 996 GT3 MKII 2003>>
- Porsche 996 GT3 RS 2003-04
- Porsche 997 MK1 Carrera 2 3.6L 2005-08
- Porsche 997 MK1 Carrera 2S 3.8L 2005-08
- Porsche 997 MK1 Carrera 4 3.6L 2005-08
- Porsche 997 MK1 Carrera 4S 3.8L 2005-08
- Porsche 997 MK1 TURBO 2007-09
- Porsche 997 MK1 GT3 / GT3 RS 2007-09
- Porsche 997 MK1 GT2 2007-09
- Porsche 997 MKII Carrera C2 3.6L 2009-12
- Porsche 997 MKII Carrera C4 3.6L 2009-12
- Porsche 997 MKII Carrera C2S 3.8L 2009-12
- Porsche 997 MKII Carrera C4S 3.8L 2009-12
- Porsche 997 MKII GT3 / GT3 RS 2010-11
- Porsche 997 MKII Turbo 2010-13
A complete OE Genuine Porsche cooling system service kit that includes all the factory-specified components perfect for routine maintenance or when replacing worn cooling system components to maintain precise temperature control and system integrity.
Fits:
Porsche 996 3.6L C2 / C4 / C4S 2001 - 2005
Porsche 996 Turbo 2001 - 2005
Porsche 996 GT2 2001 - 2005
Porsche 996 GT3 MKII / GT3 RS 2001 - 2005
Porsche 997.1 2005 - 2008 all models
Porsche 997.2 2009 - 2012 all models
Diagram ref no 1, 2, 3, 4, 5, 13, 14, 17.
This OE Genuine Porsche kit is designed for Porsche models that use part number 99610615704 for the coolant expansion reservoir - commonly found on Porsche 911 (996 & early 997) vehicles from roughly 2001-2012. Always verify specific model and year compatibility before installation.
This service kit combines essential Genuine Porsche components engineered to work together for optimal cooling system performance:
• 99610615704 × 1 – Genuine Porsche Coolant Expansion Tank: Factory-designed coolant reservoir that collects expanding coolant as engine temperatures rise and returns it as the system cools. Built to exact Porsche OE specifications for perfect fit and long service life.
• 99610644704 × 1 – Genuine Porsche Expansion Tank Cap: Original equipment pressure cap that seals the reservoir and maintains correct cooling system pressure for efficient thermal control.
• 99764150300 × 1 – Genuine Porsche Coolant Level Sensor: Factory fluid level sensor ensures accurate monitoring of coolant level and integrates with the vehicle’s onboard warning system for enhanced safety.
• 00004330515 × 5 – Genuine Porsche Long-Life Antifreeze (1 L, Red, 5-Year Protection): Factory-approved coolant concentrate formulated to deliver extended thermal protection and corrosion resistance when mixed with distilled water.
Together, these parts create a comprehensive cooling system refresh kit designed to restore and maintain proper coolant management under all driving conditions.
Over time, the original coolant expansion tank can become brittle, discoloured, or cracked due to repeated heat cycling and chemical exposure, potentially leading to leaks, reduced pressure control, and poor cooling performance. Old or degraded coolant loses its protective properties, increasing the risk of corrosion and overheating. Failing to replace worn parts can result in costly engine damage. Using Genuine Porsche parts ensures factory-original fit, dependable performance, and long-term reliability - preserving engine health and cooling efficiency.
Replace this kit when you notice any of the following:
• Cracks, leaks or deformation in the expansion tank
• Pressure cap no longer seals or maintains system pressure
• Coolant appears contaminated, sludgy or past its service life
• Frequent coolant top-ups are required without visible external leaks.
Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.
COOLTANKKIT997.2.OE
The product you are viewing cross references to these numbers
This kit is comprised of the following items:
- Porsche 996 C2 3.6L 09/01-2005
- Porsche 996 C4 3.6L 09/01-2005
- Porsche 996 C4S 3.6L 09/01-2005
- Porsche 996 TURBO 2000-05
- Porsche 996 GT2 2001-05
- Porsche 996 GT3 MKII 2003>>
- Porsche 996 GT3 RS 2003-04
- Porsche 997 MK1 Carrera 2 3.6L 2005-08
- Porsche 997 MK1 Carrera 2S 3.8L 2005-08
- Porsche 997 MK1 Carrera 4 3.6L 2005-08
- Porsche 997 MK1 Carrera 4S 3.8L 2005-08
- Porsche 997 MK1 TURBO 2007-09
- Porsche 997 MK1 GT3 / GT3 RS 2007-09
- Porsche 997 MK1 GT2 2007-09
- Porsche 997 MKII Carrera C2 3.6L 2009-12
- Porsche 997 MKII Carrera C4 3.6L 2009-12
- Porsche 997 MKII Carrera C2S 3.8L 2009-12
- Porsche 997 MKII Carrera C4S 3.8L 2009-12
- Porsche 997 MKII GT3 / GT3 RS 2010-11
- Porsche 997 MKII Turbo 2010-13
This kit includes a direct-fit coolant expansion tank, pressure cap, long-life red antifreeze, and a coolant level sensor, giving you the essential components needed to refresh the coolant reservoir side of the engine cooling system with parts that match the original equipment specifications.
Fits:
Porsche 996 3.6L C2 / C4 / C4S 2001 - 2005
Porsche 996 Turbo 2001 - 2005
Porsche 996 GT2 2001 - 2005
Porsche 996 GT3 MKII / GT3 RS 2001 - 2005
Porsche 997.1 2005 - 2008 all models
Porsche 997.2 2009 - 2012 all models
Diagram ref no 1, 3, 4, 5, 13, 14, 17.
This OE Match kit is designed for Porsche vehicles that use part number 99610615704 for their coolant expansion reservoir, commonly fitting Porsche 911 models (996 & early 997 series). Always check your vehicle’s specific model year and engine to confirm fitment before purchasing.
This Engine Coolant Expansion Tank Kit combines the essential OE Match components needed for proper cooling system service:
• 99610615704/1 × 1 – OE Match Coolant Expansion Tank incl. Cap (99610644704): Precision-matched coolant reservoir engineered to replicate the original Porsche expansion tank for the 911 (996/997) cooling system. Correct pressure cap that seals the expansion tank and helps maintain proper system pressure to optimise coolant performance.
• 00004330194 × 5 – Comma Antifreeze 1 L Red Concentrate (5-Year Protection): High-quality coolant concentrate designed for long life protection against corrosion, freeze, and boil when mixed with distilled water.
Together, these components ensure your cooling system is refreshed with quality parts that closely match the original performance and characteristics.
This kit helps restore your cooling system’s ability to manage the expansion and contraction of engine coolant as temperature fluctuates. The expansion tank safely captures excess coolant, the pressure cap maintains system integrity and boiling point, and the long-life antifreeze protects internal components from corrosion, overheat or freeze damage.
Over time, the original coolant expansion tank and cap can become brittle, discoloured, cracked or weakened due to repeated heat cycles and coolant exposure. A failing tank may allow coolant loss or air entry into the system, while old or depleted coolant loses protective properties. An OE Match tank and cap restore proper coolant containment and pressure control - and replenishing the coolant with high-quality antifreeze extends protection against corrosion and temperature extremes for years.
Replace this kit when you notice any of the following:
• Cracks, leaks or deformation in the expansion tank
• Pressure cap no longer seals or maintains system pressure
• Coolant appears contaminated, sludgy or past its service life
• Frequent coolant top-ups are required without visible external leaks.
Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.
COOLTANKKIT997.1
The product you are viewing cross references to these numbers
This kit is comprised of the following items:
- Porsche 996 C2 3.6L 09/01-2005
- Porsche 996 C4 3.6L 09/01-2005
- Porsche 996 C4S 3.6L 09/01-2005
- Porsche 996 TURBO 2000-05
- Porsche 996 GT2 2001-05
- Porsche 996 GT3 MKII 2003>>
- Porsche 996 GT3 RS 2003-04
- Porsche 997 MK1 Carrera 2 3.6L 2005-08
- Porsche 997 MK1 Carrera 2S 3.8L 2005-08
- Porsche 997 MK1 Carrera 4 3.6L 2005-08
- Porsche 997 MK1 Carrera 4S 3.8L 2005-08
- Porsche 997 MK1 TURBO 2007-09
- Porsche 997 MK1 GT3 / GT3 RS 2007-09
- Porsche 997 MK1 GT2 2007-09
- Porsche 997 MKII Carrera C2 3.6L 2009-12
- Porsche 997 MKII Carrera C4 3.6L 2009-12
- Porsche 997 MKII Carrera C2S 3.8L 2009-12
- Porsche 997 MKII Carrera C4S 3.8L 2009-12
- Porsche 997 MKII GT3 / GT3 RS 2010-11
- Porsche 997 MKII Turbo 2010-13
Genuine Porsche cooling system kit provides the genuine coolant expansion tank, correct sealing cap, and long-life antifreeze concentrate - everything needed to refresh and maintain your vehicle’s coolant reservoir system the way Porsche intended.
Fits:
Porsche 996 3.6L C2 / C4 / C4S 2001 - 2005
Porsche 996 Turbo 2001 - 2005
Porsche 996 GT2 2001 - 2005
Porsche 996 GT3 MKII / GT3 RS 2001 - 2005
Porsche 997.1 2005 - 2008 all models
Porsche 997.2 2009 - 2012 all models
Diagram ref no 1, 3, 4, 5, 13, 14, 17.
This Genuine Porsche kit is designed for Porsche models that use part 99610615704 as the coolant expansion reservoir, which includes various 911 (996 & early 997) vehicles (typically fitted to Porsche 911 2001–2012 models). Verify your specific year, model and engine to ensure compatibility.
This engine coolant expansion tank kit includes:
• 99610615704 × 1 – Genuine Porsche Coolant Expansion Tank: The OE-designed coolant reservoir, precision-molded and pressure-tested to factory specifications. It handles expanding coolant as your engine warms, keeping the cooling system stable and correctly balanced.
• 99610644704 × 1 – Genuine Porsche Expansion Tank Cap: A direct-fit factory cap engineered to maintain specified cooling system pressure and seal the reservoir tightly under thermal cycling.
• 00004330515 × 5 – Genuine Porsche Long-Life Antifreeze (1 L Red Concentrate, 5-Year Protection): Porsche-approved long-life coolant concentrate that, when mixed properly with distilled water, offers extended protection against freezing, boiling, and corrosion — critical for long term engine health.
Together, these parts form a complete, genuine Porsche cooling system refresh solution that maintains factory-engineered performance, durability and thermal stability.
Original coolant expansion tanks can become brittle, discoloured or cracked over time due to constant heat cycling and chemical exposure, leading to coolant leaks or pressure loss. A failing reservoir or cap can compromise cooling performance and increase the risk of engine overheating. Additionally, coolant degrades with age and loses protective qualities against rust and thermal stress. Replacing these components with Genuine Porsche products ensures restored system integrity, accurate fluid containment and long-lasting protection - helping preserve engine longevity and performance.
Replace this kit when you notice any of the following:
• Cracks, leaks or deformation in the expansion tank
• Pressure cap no longer seals or maintains system pressure
• Coolant appears contaminated, sludgy or past its service life
• Frequent coolant top-ups are required without visible external leaks.
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COOLTANKKIT997.1.OE
The product you are viewing cross references to these numbers
This kit is comprised of the following items:
Multi pack 2 x 5L Bottles
Mobil 1 0W-40 is recommended for all types of modern vehicles, especially high-performance turbo-charged, supercharged gasoline and diesel multi-valve fuel injected engines found in passenger cars, SUVs, light vans and trucks.
Mobil 1 0W-40 is especially suitable for extreme conditions, where conventional oil often cannot perform.
Mobil is not recommended for 2-Cycle or aviation engines, unless specifically approved by the manufacturer.
Everything you need to know about oil please see
Porsche Oils overview
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OIL00004
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This kit is comprised of the following items:
Multi pack 3 x 5L Bottles
Mobil 1 0W-40 is recommended for all types of modern vehicles, especially high-performance turbo-charged, supercharged gasoline and diesel multi-valve fuel injected engines found in passenger cars, SUVs, light vans and trucks.
Mobil 1 0W-40 is especially suitable for extreme conditions, where conventional oil often cannot perform.
Mobil is not recommended for 2-Cycle or aviation engines, unless specifically approved by the manufacturer.
Everything you need to know about oil please see:
Porsche Oils overview
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OIL00004
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This kit is comprised of the following items:
- Porsche Boxster 986 2.5L 1997-99
- Porsche Boxster 986 2.7L 1999-02
- Porsche Boxster S 986 3.2L 1999-02
- Porsche Boxster 986 2.7L 2003-04
- Porsche Boxster S 986 3.2L 2003-04
- Porsche 996 C2 3.4L 1997-08/01
- Porsche 996 C4 3.4L 1997-08/01
- Porsche 996 C2 3.6L 09/01-2005
- Porsche 996 C4 3.6L 09/01-2005
- Porsche 996 GT3 MKI 1999-02
- Porsche 996 GT3 MKII 2003>>
- Porsche 996 GT3 RS 2003-04
This OE Match Water Radiator Set includes both left and right water radiators - designed as direct-fit replacements for the original factory cooling cores on Porsche 996 (911) & 986 Boxster models. Together they form the central cooling system components responsible for controlling engine temperature and preventing overheating.
SET OF 2
Fits:
Porsche 996 C2 / C4 / GT3 1997 - 2005
Porsche 986 Boxster 1997 - 2004
The cooling system of the Porsche 996 and 986 is based on two radiators (left and right) that effectively remove heat from the engine coolant under all operating conditions, from everyday driving to dynamic use on the road.
Each radiator is engineered to match original Porsche specifications for:
• Core dimensions and fin density
• Mounting points and hose connections
• Coolant flow capacity
• Heat transfer performance
This OE Match radiator set delivers balanced cooling and thermal stability by replacing both cores at once, ensuring equal efficiency on each side of the system. Manufactured from high-quality materials with durable aluminium cores and corrosion-resistant tanks, these radiators offer long service life and effective heat rejection with reliable fitment.
Direct replacement for the original Porsche components, this set installs using the existing mounting brackets, hoses, and hardware, making it ideal for cooling system overhauls, radiator failure replacement, or preventative maintenance on higher-mile vehicles.
A failing radiator can lead to engine overheating, coolant loss, reduced performance, and even engine damage if left unaddressed. Symptoms such as rising temperature gauge readings, coolant leaks, or steam from the engine bay indicate a compromised cooling core. Replacing both radiators as a matched set ensures consistent cooling efficiency and balanced performance across the entire system.
Replace this radiator set if you notice:
• Persistent engine overheating
• Leaks or corrosion on radiator cores
• Bent, dented, or clogged cooling fins
• Reduced heater performance
• After front-end collision or cooling system service
• During routine coolant system overhaul
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RADKIT99606.OEM
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This kit is comprised of the following items:
- Porsche Boxster 986 2.5L 1997-99
- Porsche Boxster 986 2.7L 1999-02
- Porsche Boxster S 986 3.2L 1999-02
- Porsche Boxster 986 2.7L 2003-04
- Porsche Boxster S 986 3.2L 2003-04
- Porsche 996 C2 3.4L 1997-08/01
- Porsche 996 C4 3.4L 1997-08/01
- Porsche 996 C2 3.6L 09/01-2005
- Porsche 996 C4 3.6L 09/01-2005
- Porsche 996 GT3 MKI 1999-02
- Porsche 996 GT3 MKII 2003>>
- Porsche 996 GT3 RS 2003-04
SET OF 2
Fits:
Porsche 996 C2 / C4 / GT3 1997-05
Porsche 986 Boxster 1997-2004
Radiator fluid, or coolant, is the most important part of your car's cooling system, which protects your engine from overheating. Low coolant can lead to a breakdown and expensive repairs.
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RADKIT99605
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This kit is comprised of the following items:
- Porsche 996 C2 3.4L 1997-08/01
- Porsche 996 C4 3.4L 1997-08/01
- Porsche 996 C2 3.6L 09/01-2005
- Porsche 996 C4 3.6L 09/01-2005
- Porsche 996 C4S 3.6L 09/01-2005
- Porsche 996 TURBO 2000-05
- Porsche 996 GT2 2001-05
- Porsche 996 GT3 MKI 1999-02
- Porsche 996 GT3 MKII 2003>>
- Porsche 996 GT3 RS 2003-04
- Porsche 997 MK1 Carrera 2 3.6L 2005-08
- Porsche 997 MK1 Carrera 4 3.6L 2005-08
This is a complete OE Match Engine Oil Cooler Service Kit designed to fully replace and service the engine oil cooling system on select Porsche 996 and 997 models. The kit combines an OE Match oil cooler (radiator) with a full set of gaskets, seals, O-rings, fasteners, and fittings sourced from genuine Porsche OEM parts - ensuring correct sealing, fitment, and long-lasting performance.
Fits:
Porsche 996 Carrera 3.4L / 3.6L 1998 - 2005
Porsche 997.1 Carrera 3.6L 2005 - 2008
Diagram Ref No. 18, 18, 20, 21, 30, 31 and 32.
This comprehensive service kit centers around the OE Match engine oil cooler (OE ref part no. 99610702559) - a direct-fit cooling radiator that exchanges heat between engine oil and the coolant circuit to keep oil temperatures within proper limits under all driving conditions. In addition to the cooler itself, the kit includes authentic Porsche OEM parts necessary for a proper installation and leak-free operation.
Kit Includes:
• OE Match Engine Oil Cooler - OE ref no 99610702559
• Porsche Genuine hose - 99610623053
• Porsche Genuine Seals - 99970754740 and 99970738940
• Porsche Genuine hex screw - N10546403
• Porsche Genuine hose clamps - 99951255400 and 99951265209
These genuine parts are matched with the OE Match cooler to ensure factory-level sealing and durability, removing the guesswork from sourcing the correct components for an engine oil cooler service.
The engine oil cooler and its associated seals and hardware are subject to thermal cycling, pressure variation, and long-term exposure to heat and chemicals. Over time, coolers can become corroded, clogged, or internally separated, and seals can dry out, harden, or fail. This leads to:
• Oil leaks
• Elevated oil temperatures
• Reduced lubrication efficiency
• Possible engine damage from overheating or loss of oil pressure
Replacing the entire oil cooler and related seals at the same time delivers a comprehensive refresh of the system - reducing the risk of repeat leaks, improving cooling efficiency, and helping prolong engine life.
When to replace. Install this oil cooler service kit when:
• You detect oil or coolant leaks near the oil cooler
• The vehicle has high mileage with original components
• You’re experiencing oil temperature fluctuations or overheating conditions
• You are performing a coolant system or engine refurbishment
• Internal oil cooler passages show blockage or contamination
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OILCOOLERKIT996.OEM
The product you are viewing cross references to these numbers
This kit is comprised of the following items:
- Porsche Boxster 986 2.5L 1997-99
- Porsche Boxster 986 2.7L 1999-02
- Porsche Boxster S 986 3.2L 1999-02
- Porsche Boxster 986 2.7L 2003-04
- Porsche Boxster S 986 3.2L 2003-04
- Porsche 996 C2 3.4L 1997-08/01
- Porsche 996 C4 3.4L 1997-08/01
- Porsche 996 C2 3.6L 09/01-2005
- Porsche 996 C4 3.6L 09/01-2005
- Porsche 996 GT3 MKI 1999-02
- Porsche 996 GT3 MKII 2003>>
- Porsche 996 GT3 RS 2003-04
This package includes two radiator cooling fans - one for the left and one for the right side. Upgrading an aging cooling system by replacing both fans at once for consistent performance and longevity.
Fits:
Porsche 986 Boxster 1997 - 2004
Porsche 996 C2, C4, GT3 1998 - 2005
Diagram ref no 2.
The purpose of this radiator cooling fan is to draw air through the radiator and air conditioning condenser when the vehicle's speed is low - for example, when idling or in traffic - helping maintain the proper coolant and cooling system temperature. This keeps the engine cool and the air conditioning system operating efficiently.
Key benefits of paired replacement:
• Ensures symmetrical airflow and balanced cooling efficiency.
• Reduces load on each fan, potentially extending lifespan compared to a single fan doing all the work.
• Provides redundancy - if one fan fails, the second may help prevent immediate overheating during transit or cooldown.
• Simplifies maintenance by replacing both fans together, avoiding mismatched wear and preserving consistent airflow characteristics.
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99662413500
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This kit is comprised of the following items:
Porsche Engine Cooling Parts
Keeping your Porsche’s engine at the correct temperature is critical for both performance and reliability. At Design911, we supply a comprehensive range of engine cooling parts for every Porsche model — from classic air-cooled cars to the latest water-cooled performance machines.
Our collection includes everything from water and oil hoses to radiators, water pumps, oil coolers, thermostats, coolant tanks, and oil reservoirs — all at highly competitive prices. Whether you need a direct replacement for road use or a high-performance upgrade for track days, we have you covered.
What Porsche Engine Cooling Parts Are Available?
We stock a wide range of cooling system
components, including:
- Water Hoses & Oil Hoses – reliable replacements to keep fluids flowing under pressure
- Radiators – OE-spec replacements and high-performance race radiators
- Water Pumps & Oil Pumps – essential for maintaining correct circulation
- Oil Coolers – control oil temperature under high loads and spirited driving
- Thermostats – regulate engine operating temperatures
- Coolant Tanks & Oil Tanks – durable reservoirs designed to OEM standards
- Sensors & Switches – keep the cooling system responsive and efficient
We also supply premium engine oils and antifreeze/coolant — essential for year-round protection against freezing, overheating, and corrosion.
Why Engine Cooling is Essential
Your Porsche’s cooling system is the life support of the engine. Radiators, pumps, hoses, and coolers maintain safe operating temperatures and prevent catastrophic damage. A single failed component can lead to overheating, loss of oil pressure, or even engine failure.
That’s why it’s vital to maintain these parts and replace them promptly if you notice leaks, cracks, or performance issues.
Performance & Motorsport Cooling
Looking for more than just a replacement? Our race-spec radiators and oil coolers are engineered to deliver maximum cooling efficiency, helping you get the most out of your Porsche on the track. These high-performance systems handle extreme heat and stress, ensuring consistent results lap after lap.
How Often Should Engine Coolant Be Changed?
Coolant provides year-round protection against
both freezing and corrosion. On most Porsche models, coolant levels are checked
during regular servicing, and low levels will trigger a dashboard warning.
- Check coolant regularly and top up as needed.
- Replace coolant periodically according to Porsche’s service intervals.
- Always handle coolant with care - the reservoir is pressurised, and opening it when hot can cause burns. Allow the engine to cool before unscrewing the cap, cover it with a cloth, and open slowly to release pressure safely.
Why Choose Design911 for Cooling Parts?
- Huge Range – from OEM replacements to high-performance upgrades
- OEM & Aftermarket Options – trusted quality for every budget
- Worldwide Delivery – expertly packed to prevent damage in transit
- Customer Support – our Porsche specialists can help you select the right part for your model
Shop Porsche engine cooling parts today – from hoses and pumps to radiators and thermostats – and keep your Porsche running at peak performance.
