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OE Match
OE Match is a brand that provides a wide range of Porsche components, from gaskets to suspension hardware, engine parts, and interior trim. Over 6,700 individual part numbers, and over 11,800 OE cross-references catalogued, and are constantly developing new lines.
OE Match has over 100 new products currently in the engineering phase, which will be quality-controlled and added to their catalog. The mission is to keep all Porsche vehicles on the road by offering a vast selection of parts that can address various problems across different Porsche generations.
- Porsche 911 1965-1968 2.0L / 912 SWB (F)
- Porsche 911 1968-1973 2.2L / 2.4L / 2.7L RS LWB (F)
- Porsche 911 1974-1977 2.7L / 1976-77 3.0 Carrera
- Porsche 911 1978-1983 3.0L / SC
Sunroof Wind Deflector Clamps (Open & Closed) for Porsche 911 1965–1983 – CNC Machined, Anodised & Built for Long-Term Reliability
Sold each - 1 of each required per side (4 per car)
These precision CNC-machined and anodised sunroof wind deflector clamps are designed for Porsche 911 models from 1965 to 1983, providing a durable and accurate replacement for worn or aged clamps that secure the sunroof’s air deflector. Available in both open and closed styles, each clamp delivers dependable fitment and ensures the wind deflector operates exactly as intended.
Fits:
- Porsche 911 1965-1968 2.0L / 912 SWB (F)
- Porsche 911 1968-1973 2.2L / 2.4L / 2.7L RS LWB (F)
- Porsche 911 1974-1977 2.7L / 1976-77 3.0 Carrera
- Porsche 911 1978-1983 3.0L / SC
Clamps for diagram ref no 24 and 25
Crafted as a high-quality alternative to genuine equipment, these clamps restore the correct tension and alignment of the air deflector, ensuring quiet, stable sunroof operation and improved airflow control when driving with the sunroof open. Their CNC-machined construction provides superior precision compared with ageing originals, making them an ideal upgrade for classic Porsche restoration, sunroof repair and preventative maintenance.
What These Sunroof Wind Deflector Clamps Do
These clamps serve a crucial role in the classic 911 sunroof system:
• Secure the wind deflector to ensure stable and smooth lifting
• Maintain correct alignment for quiet operation at speed
• Reduce wind buffeting when the sunroof is open
• Prevent unwanted vibration, rattles and movement
• Support the longevity of surrounding sunroof components
• Provide precision fitment thanks to CNC-machined anodised aluminium
Whether you are rebuilding a sunroof mechanism or restoring a 1970s 911 to original function, these clamps offer reliable performance and modern engineering quality.
Why Wind Deflector Clamps Fail on Classic Porsche 911 Models
Common ageing and failure points include:
• Original clamps weakening due to decades of metal fatigue
• Corrosion or oxidisation on older aluminium pieces
• Clamps bending from repeated sunroof cycling
• Wear from dried grease or lack of lubrication in the sunroof mechanism
• Rubber or plastic mating surfaces deteriorating with age
• Excessive wind pressure stressing already fragile components
Failure typically leads to rattles, poor deflector positioning, noisy airflow, or the wind deflector not lifting correctly—issues common on early Porsche 911 targa and coupé models with electric sunroofs.
Why These Clamps Should Be Replaced
Replacing the sunroof wind deflector clamps ensures:
• Proper and stable deflector movement
• Quieter cabin with reduced wind noise
• Eliminated rattles caused by loosened or worn clamps
• Restored sunroof functionality for daily use
• Improved longevity thanks to CNC-machined durability
• A dependable solution for restoration and concours-level rebuilds
Installing high-precision replacement clamps is the most effective way to maintain the authenticity and usability of classic Porsche 911 sunroof systems.
Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.
901564073KIT
The product you are viewing cross references to these numbers
This kit is comprised of the following items:
- Porsche 911 1965-1968 2.0L / 912 SWB (F)
- Porsche 911 1968-1973 2.2L / 2.4L / 2.7L RS LWB (F)
- Porsche 911 1974-1977 2.7L / 1976-77 3.0 Carrera
- Porsche 911 1978-1983 3.0L / SC
Sunroof Wind Deflector Clamps (Open & Closed) for
Porsche 911 1965–1983 – CNC Machined, Anodised & Built for Long-Term
Reliability
Sold each - 1 of each required per side (4 per car)
These precision CNC-machined and anodised sunroof wind
deflector clamps are designed for Porsche 911 models from 1965 to 1983,
providing a durable and accurate replacement for worn or aged clamps that
secure the sunroof’s air deflector. Available in both open and closed styles, each
clamp delivers dependable fitment and ensures the wind deflector operates
exactly as intended.
Fits:
- Porsche 911 1965-1968 2.0L / 912 SWB (F)
- Porsche 911 1968-1973 2.2L / 2.4L / 2.7L RS LWB (F)
- Porsche 911 1974-1977 2.7L / 1976-77 3.0 Carrera
- Porsche 911 1978-1983 3.0L / SC
Clamps for diagram ref no 24 and 25
Crafted as a high-quality alternative to genuine equipment, these clamps restore the correct tension and alignment of the air deflector, ensuring quiet, stable sunroof operation and improved airflow control when driving with the sunroof open. Their CNC-machined construction provides superior precision compared with ageing originals, making them an ideal upgrade for classic Porsche restoration, sunroof repair and preventative maintenance.
What These Sunroof Wind
Deflector Clamps Do
These clamps serve a crucial role in the classic 911 sunroof
system:
• Secure the wind deflector to ensure stable and smooth
lifting
• Maintain correct alignment for quiet operation at speed
• Reduce wind buffeting when the sunroof is open
• Prevent unwanted vibration, rattles and movement
• Support the longevity of surrounding sunroof components
• Provide precision fitment thanks to CNC-machined anodised aluminium
Whether you are rebuilding a sunroof mechanism or restoring a 1970s 911 to original function, these clamps offer reliable performance and modern engineering quality.
Why Wind Deflector Clamps Fail on Classic Porsche 911 Models
Common ageing and failure points include:
• Original clamps weakening due to decades of metal fatigue
• Corrosion or oxidisation on older aluminium pieces
• Clamps bending from repeated sunroof cycling
• Wear from dried grease or lack of lubrication in the sunroof mechanism
• Rubber or plastic mating surfaces deteriorating with age
• Excessive wind pressure stressing already fragile components
Failure typically leads to rattles, poor deflector positioning, noisy airflow, or the wind deflector not lifting correctly—issues common on early Porsche 911 targa and coupé models with electric sunroofs.
Why These Clamps Should Be Replaced
Replacing the sunroof wind deflector clamps ensures:
• Proper and stable deflector movement
• Quieter cabin with reduced wind noise
• Eliminated rattles caused by loosened or worn clamps
• Restored sunroof functionality for daily use
• Improved longevity thanks to CNC-machined durability
• A dependable solution for restoration and concours-level rebuilds
Installing high-precision replacement clamps is the most effective way to maintain the authenticity and usability of classic Porsche 911 sunroof systems.
Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.
901564073H
The product you are viewing cross references to these numbers
- Porsche 991.1 Carrera C2S 3.8L (400Bhp) 2012-16
- Porsche 991.1 Carrera C4S 3.8L (400Bhp) 2012-16
Complete Water Pump Kit – Water Pump, Thermostat,
Serpentine Belt & Gaskets for a Full Cooling System Refresh
This complete water pump kit includes a new water
pump, thermostat, drive (serpentine) belt and the required gaskets for both the
pump and thermostat housing.
Fits:
- Porsche 991.1 Carrera C2S 3.8L (400Bhp) 2012-16
- Porsche 991.1 Carrera C4S 3.8L (400Bhp) 2012-16
Designed as a comprehensive cooling system service package, it ensures correct coolant circulation, accurate temperature regulation, and reliable accessory belt operation. Ideal for preventative maintenance or full cooling system repair, this kit provides everything needed to restore confidence in your Porsche’s engine cooling performance.
The water pump continuously circulates coolant through the engine and radiators, while the thermostat regulates operating temperature and ensures the engine warms up properly. The serpentine belt drives essential accessories—including the water pump—so replacing all these components together ensures long-term reliability and prevents future breakdowns.
What This Complete Water Pump Kit Does
This cooling system service kit:
- Replaces
the water pump to restore proper coolant flow
- Includes
a new thermostat for accurate temperature control
- Supplies
a fresh serpentine belt to ensure reliable accessory drive operation
- Comes
with all required gaskets to prevent leaks during installation
- Improves
cooling efficiency, reducing the risk of overheating
- Ensures long-term reliability with coordinated component replacement
- Perfect for workshop servicing, DIY maintenance or high-mileage cooling system refreshes.
Why Water Pumps, Thermostats & Belts Fail
Common failure points include:
- Bearing
wear inside the water pump, causing leaks or noise
- Impeller
degradation, reducing coolant flow
- Thermostat
sticking, leading to overheating or overcooling
- Serpentine
belt cracking, glazing or stretching
- Coolant
contamination, accelerating component wear
- Heat cycling, which weakens gaskets and housings
Cooling failures can cause warped cylinder heads, engine misfires or complete engine failure if not addressed promptly.
Why These Components Should Be Replaced Together
Replacing the pump, thermostat and serpentine belt as a set
ensures:
- Restored cooling performance across the entire system
- Correct belt tension and accessory drive function
- Reduced labour costs by avoiding repeat disassembly
- Balanced
longevity, as all components age similarly
- Prevention
of leaks, thanks to new gaskets and seals
- Peace of mind for daily driving, long trips or track use
This kit offers the most reliable and cost-effective approach to cooling system maintenance.
Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.
WATERPUMP.991.2.OEM
The product you are viewing cross references to these numbers
This kit is comprised of the following items:
- Porsche Boxster 981 2.7L 2012-16
- Porsche Boxster 981 S / GTS 3.4L 2012-16
- Porsche Boxster 981 Spyder 3.8L 2016
- Porsche 991.1 Carrera C2 3.4L (350Bhp) 2012-16
- Porsche 991.1 Carrera C2S 3.8L (400Bhp) 2012-16
- Porsche 991.1 Carrera C4 3.4L (350Bhp) 2012-16
- Porsche 991.1 Carrera C4S 3.8L (400Bhp) 2012-16
- Porsche Cayman 2.7L 981 2013-16
- Porsche Cayman S / GTS 3.4L 981 2013-16
- Porsche Cayman GT4 3.8L 2015-16
Complete Water Pump Kit – Water Pump, Thermostat,
Serpentine Belt & Gaskets for a Full Cooling System Refresh
This complete water pump kit includes a new water
pump, thermostat, drive (serpentine) belt and the required gaskets for both the
pump and thermostat housing.
Fits:
- Porsche Boxster 981 2.7L 2012-16
- Porsche Boxster 981 S / GTS 3.4L 2012-16
- Porsche Boxster 981 Spyder 3.8L 2016
- Porsche 991.1 Carrera C2 3.4L (350Bhp) 2012-16 (MA1.04 engine) - Cars without PDCC
- Porsche 991.1 Carrera C2S 3.8L (400Bhp) 2012-16 (MA1.03 engine) - Cars without PDCC
- Porsche 991.1 Carrera C4 3.4L (350Bhp) 2012-16 (MA1.04 engine) - Cars without PDCC
- Porsche 991.1 Carrera C4S 3.8L (400Bhp) 2012-16 (MA1.03 engine) - Cars without PDCC
- Porsche Cayman 2.7L 981 2013-16
- Porsche Cayman S / GTS 3.4L 981 2013-16
- Porsche Cayman GT4 3.8L 2015-16
Designed as a comprehensive cooling system service package, it ensures correct coolant circulation, accurate temperature regulation, and reliable accessory belt operation. Ideal for preventative maintenance or full cooling system repair, this kit provides everything needed to restore confidence in your Porsche’s engine cooling performance.
The water pump continuously circulates coolant through the engine and radiators, while the thermostat regulates operating temperature and ensures the engine warms up properly. The serpentine belt drives essential accessories—including the water pump—so replacing all these components together ensures long-term reliability and prevents future breakdowns.
What This Complete Water Pump Kit Does
This cooling system service kit:
- Replaces
the water pump to restore proper coolant flow
- Includes
a new thermostat for accurate temperature control
- Supplies
a fresh serpentine belt to ensure reliable accessory drive operation
- Comes
with all required gaskets to prevent leaks during installation
- Improves
cooling efficiency, reducing the risk of overheating
- Ensures long-term reliability with coordinated component replacement
- Perfect for workshop servicing, DIY maintenance or high-mileage cooling system refreshes.
Why Water Pumps, Thermostats & Belts Fail
Common failure points include:
- Bearing
wear inside the water pump, causing leaks or noise
- Impeller
degradation, reducing coolant flow
- Thermostat
sticking, leading to overheating or overcooling
- Serpentine
belt cracking, glazing or stretching
- Coolant
contamination, accelerating component wear
- Heat cycling, which weakens gaskets and housings
Cooling failures can cause warped cylinder heads, engine misfires or complete engine failure if not addressed promptly.
Why These Components Should Be Replaced Together
Replacing the pump, thermostat and serpentine belt as a set
ensures:
- Restored cooling performance across the entire system
- Correct belt tension and accessory drive function
- Reduced labour costs by avoiding repeat disassembly
- Balanced
longevity, as all components age similarly
- Prevention
of leaks, thanks to new gaskets and seals
- Peace of mind for daily driving, long trips or track use
This kit offers the most reliable and cost-effective approach to cooling system maintenance.
Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.
WATERPUMP.991.1.OEM
The product you are viewing cross references to these numbers
This kit is comprised of the following items:
- Porsche Boxster 987 MKII 2.9L 2009-2012
- Porsche Boxster S 987 MKII 3.4L 2009-2012
- 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 Cayman 2.9L 987C MKII 2009-12
- Porsche Cayman S / R 3.4L 987C MKII 2009-12
Complete Water Pump Kit – Water Pump, Thermostat,
Serpentine Belt & Gaskets for a Full Cooling System Refresh
This complete water pump kit includes a new water
pump, thermostat, drive (serpentine) belt and the required gaskets for both the
pump and thermostat housing.
Fits:
- Porsche Boxster 987 MKII 2.9L 2009-2012
- Porsche Boxster S 987 MKII 3.4L 2009-2012
- 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 Cayman 2.9L 987C MKII 2009-12
- Porsche Cayman S / R 3.4L 987C MKII 2009-1
- Porsche Boxster 987 MKII 2.9L 2009-2012
- Porsche Boxster S 987 MKII 3.4L 2009-2012
- 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 Cayman 2.9L 987C MKII 2009-12
- Porsche Cayman S / R 3.4L 987C MKII 2009-12
Designed as a comprehensive cooling system service package, it ensures correct coolant circulation, accurate temperature regulation, and reliable accessory belt operation. Ideal for preventative maintenance or full cooling system repair, this kit provides everything needed to restore confidence in your Porsche’s engine cooling performance.
The water pump continuously circulates coolant through the engine and radiators, while the thermostat regulates operating temperature and ensures the engine warms up properly. The serpentine belt drives essential accessories—including the water pump—so replacing all these components together ensures long-term reliability and prevents future breakdowns.
What This Complete Water Pump Kit Does
This cooling system service kit:
- Replaces
the water pump to restore proper coolant flow
- Includes
a new thermostat for accurate temperature control
- Supplies
a fresh serpentine belt to ensure reliable accessory drive operation
- Comes
with all required gaskets to prevent leaks during installation
- Improves
cooling efficiency, reducing the risk of overheating
- Ensures long-term reliability with coordinated component replacement
- Perfect for workshop servicing, DIY maintenance or high-mileage cooling system refreshes.
Why Water Pumps, Thermostats & Belts Fail
Common failure points include:
- Bearing
wear inside the water pump, causing leaks or noise
- Impeller
degradation, reducing coolant flow
- Thermostat
sticking, leading to overheating or overcooling
- Serpentine
belt cracking, glazing or stretching
- Coolant
contamination, accelerating component wear
- Heat cycling, which weakens gaskets and housings
Cooling failures can cause warped cylinder heads, engine misfires or complete engine failure if not addressed promptly.
Why These Components Should Be Replaced Together
Replacing the pump, thermostat and serpentine belt as a set
ensures:
- Restored cooling performance across the entire system
- Correct belt tension and accessory drive function
- Reduced labour costs by avoiding repeat disassembly
- Balanced
longevity, as all components age similarly
- Prevention
of leaks, thanks to new gaskets and seals
- Peace of mind for daily driving, long trips or track use
This kit offers the most reliable and cost-effective approach to cooling system maintenance.
Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.
WATERPUMP.997.2.OEM
The product you are viewing cross references to these numbers
This kit is comprised of the following items:
- Porsche 991.1 Carrera C2 3.4L (350Bhp) 2012-16
- Porsche 991.1 Carrera C2S 3.8L (400Bhp) 2012-16
- Porsche 991.1 Carrera C4 3.4L (350Bhp) 2012-16
- Porsche 991.1 Carrera C4S 3.8L (400Bhp) 2012-16
4 pcs exhaust bracket sound absorbers , with exhaust bracket and bolts
Fits:
Porsche 991.1 Carrera C2 3.4L (350Bhp) 2012-16
Porsche 991.1 Carrera C2S 3.8L (400Bhp) 2012-16
Porsche 991.1 Carrera C4 3.4L (350Bhp) 2012-16
Porsche 991.1 Carrera C4S 3.8L (400Bhp) 2012-16
Click 'Zoom in' for large parts diagram.
Diagram Ref no 23 & 26
Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.
EXHFITTING.991.1.0
The product you are viewing cross references to these numbers
This kit is comprised of the following items:
- Porsche 991.1 Carrera C2 3.4L (350Bhp) 2012-16
- Porsche 991.1 Carrera C2S 3.8L (400Bhp) 2012-16
- Porsche 991.1 Carrera C4 3.4L (350Bhp) 2012-16
- Porsche 991.1 Carrera C4S 3.8L (400Bhp) 2012-16
4 pcs required per exhaust box bracket , fits on top and below Porsche ref: 99111147701
Fits:
Porsche 991
Click 'Zoom in' for large parts diagram.
Diagram Ref no 23
Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.
99111148700
The product you are viewing cross references to these numbers
- Porsche 911 1965-1968 2.0L / 912 SWB (F)
- Porsche 911 1968-1973 2.2L / 2.4L / 2.7L RS LWB (F)
Restore the original look and safety of your classic Porsche with this Front Indicator Lens With Chrome Rim, available for both the left and right sides. Designed for Porsche 911 and 912 models from 1965–1973, these lenses replicate the authentic appearance of the early 911 while providing modern manufacturing quality.
Fits:
- Porsche 911 1965-1968 2.0L / 912 SWB (F)
- Porsche 911 1968-1973 2.2L / 2.4L / 2.7L RS LWB (F)
Diagram Ref No 34
What This Product Does:
- The indicator lens serves as the transparent/amber cover for the front turn-signal / parking-/blinker light. It protects the bulb and reflector inside the indicator housing while providing the correct optical characteristics to meet visibility and regulation requirements.
- The optical lens surface (molded pattern, curvature, amber/clear colouring) ensures the light is diffused and visible to other road users when the indicator flashes — which is crucial for signalling direction changes, lane changes, or turns.
- The chrome rim around the lens provides a correct-period aesthetic finish, preserving the classic look of the early 911 / 912 cars.
- Cracks, chips, or breaks — due to age, stone chips, minor collisions or weathering. A damaged lens can leak water or dust into the housing, damaging the reflector or bulb.
- Fading or discoloration — old lenses often yellow or cloud over time, reducing light output and visibility.
- Loose or missing chrome rim / seal — can lead to poor sealing, moisture ingress, or misalignment.
- Non-compliant appearance or failed inspection — a cracked or broken lens may fail a vehicle inspection or be illegal to drive with, depending on local laws.
- Restoration or authenticity: for classic car restoration, correct lenses maintain vintage originality and value.
- Safety & legality: Working, undamaged indicators are essential for signalling — cracked or faded lenses reduce visibility and may lead to accidents or fail legal inspections.
- Protection of internal components: A proper lens seals out water, dust, and debris — protecting the reflector and bulb, and preventing corrosion or electrical issues.
- Maintaining classic appearance & value: For vintage cars like 911/912 (1965–73), original-style lens and chrome rim contribute heavily to authenticity and market value.
- Performance and visibility: Clear, properly coloured lenses ensure that your signals are bright and visible to other drivers.
Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.
91163192
The product you are viewing cross references to these numbers
- Porsche 996 C2 3.6L 09/01-2005
- Porsche 996 C4 3.6L 09/01-2005
- Porsche 996 C4S 3.6L 09/01-2005
Keep your Porsche 996 Carrera 3.6L performing at its best with this comprehensive service kit.
Fits:
Porsche 996 Carrera 2 3.6L
Porsche 996 Carrera 4 3.6L
Kit Contents:
1x Oil Filter – Part No. 99610722560
1x Fuel Filter – Part No. 99611025301
1x Air Filter Element – Part No. 99611013152
1x Pollen Filter Element – Part No. 99757121902
1x Oil Drain Plug Crush Washer – Part No. 90012310630
6x Bosch Spark Plugs – Part No. 99917022390
Tailor Your Kit to Fit Your Needs:
Not ready to replace parts like spark plugs or the fuel filter? No problem. Before checkout, you can remove individual components to customise the kit to your specific needs.
Want to add more? When you add this kit to your basket, you'll also have the option to include additional parts such as engine oil, ignition coils and more - so you get exactly what your vehicle requires.
Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.
SERVICEKIT.996.2.OEM1
The product you are viewing cross references to these numbers
This kit is comprised of the following items:
- Porsche 996 C2 3.4L 1997-08/01
- Porsche 996 C4 3.4L 1997-08/01
Keep your Porsche 996 Carrera 3.4L performing at its best with this comprehensive service kit.
Fits:
Porsche 996-1 Carrera 2 3.4L 1998-01
Porsche 996-1 Carrera 4 3.4L 1998-01
Kit Contents:
1x Oil Filter – Part No. 99610722560
1x Fuel Filter – Part No. 99611025301
1x Air Filter Element – Part No. 99611013152
1x Pollen Filter Element – Part No. 99757121902
1x Oil Drain Plug Crush Washer – Part No. 90012310630
6x Bosch Spark Plugs – Part No. 99917020791
Tailor Your Kit to Fit Your Needs:
Not ready to replace parts like spark plugs or the fuel filter? No problem. Before checkout, you can remove individual components to customise the kit to your specific needs.
Want to add more? When you add this kit to your basket, you'll also have the option to include additional parts such as engine oil, ignition coils and more - so you get exactly what your vehicle requires.
Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.
SERVICEKIT.996.1.OEM1
The product you are viewing cross references to these numbers
This kit is comprised of the following items:
- Porsche 997 MK1 Carrera 2 3.6L 2005-08
- Porsche 997 MK1 Carrera 4 3.6L 2005-08
Crankcase Breather System (Air/Oil Separator)
The crankcase breather system, also known as the air/oil separator (AOS), is a critical engine component that should be replaced every 30,000 miles—or sooner if signs of failure appear.
When the system fails, it can cause:
- Vacuum leaks due to cracked hoses or a damaged air/oil separator
- Oil consumption and fouled spark plugs, as oil is drawn into the intake
- Increased crankcase pressure, which can lead to gasket leaks and other engine issues
Preventative Maintenance
Preventative maintenance is always the best approach. Our comprehensive Crankcase Breather Hose Kit includes all the components you need to replace the system properly. We also recommend performing an engine oil change at the same time to ensure peak performance and longevity.

The AOS is basically a small diaphragm distillery which distills the minute amounts of oil mist in the crankcase, liquifies it and sends it back to the crankcase. The "clean" air is now sent into the air intake (after the throttle body) to be burned off by the engine.
When the AOS starts to fail it cannot separate all of the oil out of the mist and some liquid oil is sent to the air intake.
A few drops of oil is enough to generate the GREAT SMOKE BOMB for which our cars are famous for.
A big smoke bomb once in a while is completely normal, due to the architecture of the flat-6 engine, which may let a drop of oil flow into one of the combustion chambers sporadically.
Fits:
Porsche 997 C2 3.6L
Porsche 997 C4 3.6L
Click pictures for large parts diagram.
Diagram Ref No 1, 4 , 5
Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.
OILSEPARATOR.997.1.OEM
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
Crankcase Breather System (Air/Oil Separator)
The crankcase breather system, also known as the air/oil separator (AOS), is a critical engine component that should be replaced every 30,000 miles—or sooner if signs of failure appear.
When the system fails, it can cause:
- Vacuum leaks due to cracked hoses or a damaged air/oil separator
- Oil consumption and fouled spark plugs, as oil is drawn into the intake
- Increased crankcase pressure, which can lead to gasket leaks and other engine issues
Preventative Maintenance
Preventative maintenance is always the best approach. Our comprehensive Crankcase Breather Hose Kit includes all the components you need to replace the system properly. We also recommend performing an engine oil change at the same time to ensure peak performance and longevity.

The AOS is basically a small diaphragm distillery which distills the minute amounts of oil mist in the crankcase, liquifies it and sends it back to the crankcase. The "clean" air is now sent into the air intake (after the throttle body) to be burned off by the engine.
When the AOS starts to fail it cannot separate all of the oil out of the mist and some liquid oil is sent to the air intake.
A few drops of oil is enough to generate the GREAT SMOKE BOMB for which our cars are famous for.
A big smoke bomb once in a while is completely normal, due to the architecture of the flat-6 engine, which may let a drop of oil flow into one of the combustion chambers sporadically.
Fits:
Porsche 996 C2 3.6L
Porsche 996 C4 3.6L
Porsche 996 C4S 3.6L
Parts included are:
- 1 x AOS Oil / air separator. Porsche 996 3.4L (ref 99610702355)
- 1 x Oil separator breather hose. Porsche 996 3.4L >>2001 (ref 99610714555)
- 1 x Crankcase breather hose. Porsche Boxster 986 >>2002 / 996 (ref 99610714755)
- 1 x Oil / Air Separator Boot Clamp. Porsche 986 Boxster / 996 >>2001 (ref 99951263000)
- 1 x Oil / Air Separator Boot for Porsche 996 3.4L 1998-02 / Boxster 986 - (ref 99610723752)
Click pictures for large parts diagram.
Diagram Ref No 1, 4 , 5
Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.
OILSEPARATOR.996.2.OEM
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This kit is comprised of the following items:
- Porsche Boxster 987 MKII 2.9L 2009-2012
- Porsche Boxster S 987 MKII 3.4L 2009-2012
- Porsche Cayman 2.9L 987C MKII 2009-12
- Porsche Cayman S / R 3.4L 987C MKII 2009-12
This kit is the complete factory-specified breathing and oil-vapour separation system for the 987.2 Boxster and Cayman engines. It comprises the oil-separator unit, two vent valves, and all necessary hoses. Together, they ensure the crankcase is ventilated properly, blow-by vapours are separated, and only clean, oil-free air is recirculated or vented.
Fits:
Porsche 987.2 Boxster 2009 - 2012
Porsche 987C.2 Cayman 2009 - 2012
Diagram ref no 15 (Oil separator)
Diagram ref no 3, 4, 5 and 8
Kit Contents:
1× 0PB115099A - Air-Oil Separator (AOS) body / main separator unit
1× 9A110503801 - Crankcase Vent Valve (cylinders 4–6)
1× 9A110503900 - Crankcase Vent Valve (cylinders 1–3)
1× 9A110752002 - Crankcase Vent Hose / Breather Line
1× 9A110751501 - Additional Crankcase Breather Hose (or secondary vent line)
Recommended when replacing the AOS system, during engine maintenance, or when experiencing symptoms of AOS failure (oil consumption, smoke, vapour in intake, etc.).
Replace all components together as a kit for best sealing, balance, and long-term reliability.
Related reference numbers
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OILSEPARATOR.987.2.OEM
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This kit is comprised of the following items:
- Porsche Boxster 981 2.7L 2012-16
- Porsche Boxster 981 S / GTS 3.4L 2012-16
- Porsche Boxster 981 Spyder 3.8L 2016
- Porsche Cayman 2.7L 981 2013-16
- Porsche Cayman S / GTS 3.4L 981 2013-16
- Porsche Cayman GT4 3.8L 2015-16
This kit is the complete factory-specified breathing and oil-vapour separation system for the 981 Boxster and Cayman engines. It comprises the oil-separator unit, two vent valves, and all necessary hoses. Together, they ensure the crankcase is ventilated properly, blow-by vapours are separated, and only clean, oil-free air is recirculated or vented.
Fits:
Porsche 981 Boxster 2012 - 2016
Porsche 981 Boxster Spyder 2016>>
Porsche 982 Boxster GTS 4.0L 2017>>
Porsche 981C Cayman 2014 - 2016
Porsche 981C Cayman GT4 2016>>
Porsche 982C Cayman GT4 4.0L 2017>>
Diagram ref no 12 (Oil separator)
Diagram ref no 1, 2, 12 and 14.
Kit Contents:
1× 0PB115099A - Air-Oil Separator (AOS) body / main separator unit
1× 9A110503801 - Crankcase Vent Valve (cylinders 4–6)
1× 9A110503900 - Crankcase Vent Valve (cylinders 1–3)
1× 9A110752020 - Crankcase Vent Hose / Breather Line
1× 9A110751501 - Additional Crankcase Breather Hose (or secondary vent line)
Recommended when replacing the AOS system, during engine maintenance, or when experiencing symptoms of AOS failure (oil consumption, smoke, vapour in intake, etc.).
Replace all components together as a kit for best sealing, balance, and long-term reliability.
Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.
OILSEPARATOR.981.OEM
The product you are viewing cross references to these numbers
This kit is comprised of the following items:
- Porsche 958 Cayenne S V6 3.0L Hybrid 380HP 2010-17
Designed to manage engine temperature under all driving conditions, these components circulate coolant through the engine, radiator, and heat-exchanger system. They help maintain optimal operating temperature, protect the engine from overheating, and prevent corrosion inside the coolant system.
Fits:
- Porsche 958 Cayenne S V6 3.0L Hybrid 380HP 2013-17
Diagram Ref No 11 And 12
What This Product Does:
- Regulates engine temperature by circulating coolant efficiently
- Transfers heat from the engine to the radiator for cooling
- Maintains correct pressure and flow within the coolant circuit
- Prevents overheating during heavy load, towing, or hot climates
- Prevents coolant boiling or freezing depending on environment
- Protects engine components from corrosion and scale build-up
Symptoms Of Failing Radiator / Coolant Cooler:
- Engine overheating or fluctuating temperature
- Coolant leaks under the front of the vehicle
- Low coolant level requiring frequent top-ups
- Visible cracks, corrosion, or damaged coolant lines
- Radiator fans running excessively
- Poor cabin heating (on some models)
- Strong coolant smell from the engine bay
- Sludge or discolouration in the coolant tank
- Dashboard coolant warnings or overheating messages
Why Replacement Matters:
- Overheating is one of the fastest ways to cause catastrophic engine failure. Proper cooling system components prevent this.
- Fresh components and healthy coolant protect aluminium radiators, water pumps, thermostat housings, and engine passages.
- Engines run best at optimal temperature. A failing cooling system reduces power and efficiency.
- Replacing a coolant cooler/radiator component is far cheaper than repairing warped heads, blown head gaskets, or damaged cylinder banks.
- Hybrid Cayenne models rely heavily on coolant circulation for both engine and electrical system thermal management.
Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.
958106212
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- Porsche 957 Cayenne 3.0L Diesel 2007-10

Fits:
Porsche 957 Cayenne 3.0L Diesel 2007-10
Click 'Zoom in' for large parts diagram.
Diagram ref no 19
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95510656110
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