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- 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Related, superseded, cross reference or alternative numbers for comparison.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
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 C4S 3.6L 09/01-2005
- Porsche 996 GT3 MKI 1999-02
- Porsche 996 GT3 MKII 2003>>
- Porsche 996 GT3 RS 2003-04
Fits:
Porsche 986 Boxster S 3.2L 2000-04
Porsche 996 C2
Porsche 996 C4
Porsche 996 C4S
Porsche GT3
Cross reference numbers:
8MK376716651 , 99610603751, 99610603750, 99610603752, 99610603753
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.
7057
The product you are viewing cross references to these numbers
- 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.
Fits Left or 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.
7044
The product you are viewing cross references to these numbers
Porsche Performance Radiators - Engine Cooling & Thermal Control Upgrades
Radiators are a critical part of the engine cooling system, responsible for dissipating heat and maintaining optimal operating temperatures. In performance-driven, tuned, or high-mileage Porsche engines, upgraded radiators play a vital role in preventing overheating, reducing thermal stress, and protecting engine components under sustained load.
Available from Design911, Porsche performance radiators are engineered to deliver increased cooling efficiency, improved airflow, and enhanced durability—making them essential upgrades for road, track, and high-performance applications.
What Do Radiators Do?
Radiators regulate engine temperature by transferring heat away from the coolant.
Core Functions:
- Dissipate engine heat efficiently.
- Maintain stable operating temperatures.
- Prevent overheating under load.
- Support consistent engine performance.
- Protect internal engine components from heat damage.
Effective cooling is essential for engine reliability and longevity.
Why Do Radiators Fail?
Standard radiators can degrade over time due to age,
contamination, and increased thermal demand. Common failure causes include:
- Internal blockage from debris or sediment.
- External fin corrosion or damage.
- Coolant leaks from plastic end tanks or seals.
- Reduced efficiency due to age and contamination.
- Increased heat load from tuned or track-driven engines.
A failing radiator can lead to overheating, coolant loss, and serious engine damage if left unresolved.
Why Upgrade to a Performance Radiator?
Performance radiators are designed to handle higher thermal loads more effectively.
Upgrade Benefits:
- Increased cooling capacity and heat dissipation.
- Improved airflow and coolant flow efficiency.
- Stronger materials for enhanced durability.
- Reduced risk of overheating during spirited or track driving.
- Ideal upgrade for tuned and high-output engines.
Upgrading the radiator helps protect engine reliability while supporting performance enhancements.
Highlights
- Porsche performance radiator upgrades
- Improved cooling efficiency and heat management
- Designed for tuned and high-performance engines
- Enhanced durability and long service life
- Essential upgrade for track and performance use