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Oil Coolers / Radiators / Heat Exchangers
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OILCOOLERKIT996.OEM
Product Information
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
Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.
OILCOOLERKIT996.OEM
The product you are viewing cross references to these numbers
Product Information
Radiator oil cooler on engine.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
Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.
OILCOOLERKIT996.OEM
99610702557
99610702559
99610702556
The product you are viewing cross references to these numbers
About kit
This kit is comprised of the following items:
1 x Radiator oil cooler on engine. Porsche 996 / 997 / 986S (99610702559/3)
2 x O-RING 99970754740 (99970754740)
2 x O-RING 99970738940 (99970738940)
4 x hexagonal socket head screw (N10546403)
1 x Breather Hose. Porsche 996 / 997.1 1998-08 (99610623053)
1 x Hose clamp, 12-22 mm. Porsche 911 / 964 / 993 / 996 / 997 / 986 (99951255400)
1 x Hose Clamp (99951265209)
Vehicle Group
Vehicle Group
- 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
€201.52
Now €182.40
Orderable
SR064
Product Information
Some GT3 engines are experiencing oil-to-coolant intermixing. While there are potentially several sources of intermixing, faulty engine mounted oil-to-coolant heat exchangers are a major source. Now, with STOMSKI RACING's GT3 Heat Exchanger Tester set, you can confirm if your exchanger is faulty and needs replacing, or whether the source of the contamination is elsewhere. This set of CNC machined gauge blocks is machined from 6061 aluminum for years of service and comes complete with all gauges, seals, valves, and hardware.
Also works on the GT2 and 996/997 TT engines as well.
Product Information
Heat exchanger pressure tester for Porsche 996/997 Turbo/GT2/GT3Some GT3 engines are experiencing oil-to-coolant intermixing. While there are potentially several sources of intermixing, faulty engine mounted oil-to-coolant heat exchangers are a major source. Now, with STOMSKI RACING's GT3 Heat Exchanger Tester set, you can confirm if your exchanger is faulty and needs replacing, or whether the source of the contamination is elsewhere. This set of CNC machined gauge blocks is machined from 6061 aluminum for years of service and comes complete with all gauges, seals, valves, and hardware.
Also works on the GT2 and 996/997 TT engines as well.
Vehicle Group
Vehicle Group
- 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 TURBO 2007-09
- Porsche 997 MK1 GT3 2007-09
- Porsche 997 MK1 GT2 2007-09
- Porsche 997 MKII GT3 2010-11
- Porsche 997 MKII Turbo 2010-13
- Porsche 997 MKII GT2 RS 2011-13
Price: €297.11
Orderable - 7 to 10 Days
Shop Securely
12 Month Warranty
Worldwide Delivery
Free delivery
99620714371
Product Information
Fits:
Porsche 996 Turbo / GT2 2001-05
Porsche 996 GT3 3.6L 1999-05
Click 'Zoom in' for large parts diagram.
Diagram ref no 19
Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.
99620714371
The product you are viewing cross references to these numbers
Product Information
Engine oil cooler hose.Fits:
Porsche 996 Turbo / GT2 2001-05
Porsche 996 GT3 3.6L 1999-05
Click 'Zoom in' for large parts diagram.
Diagram ref no 19
Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.
99620714371
99620714371
99620714370
The product you are viewing cross references to these numbers
Vehicle Group
Vehicle Group
- 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
Price: €98.77
Orderable - 14 to 28 Days
Shop Securely
12 Month Warranty
Worldwide Delivery
99610702559
Product Information
Fits:
Porsche 996 1998-05
Porsche 997 3.6L
Porsche 986 Boxster S 3.2L
Porsche 987 Boxster S 3.4L
Click 'Zoom in' for large parts diagram.
Diagram Ref No 18.
Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.
99610702559
The product you are viewing cross references to these numbers
Product Information
Radiator oil cooler on engine. Fits:
Porsche 996 1998-05
Porsche 997 3.6L
Porsche 986 Boxster S 3.2L
Porsche 987 Boxster S 3.4L
Click 'Zoom in' for large parts diagram.
Diagram Ref No 18.
Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.
99610702559
99610702557
31291
99610702559
8MO37672611
99610702559
376726111
99610702556
90938
The product you are viewing cross references to these numbers
Vehicle Group
Vehicle Group
- Porsche Boxster S 986 3.2L 1999-02
- Porsche Boxster S 986 3.2L 2003-04
- Porsche Boxster 987 S 3.2/3.4L 2005-08/08
- 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
Price: €492.73
Orderable - 14 to 28 Days
Shop Securely
12 Month Warranty
Worldwide Delivery
Free delivery
99610702559/1
Product Information
Fits:
Porsche 996 1998-05
Porsche 997 3.6L
Porsche 986 Boxster S 3.2L
Porsche 987 Boxster S 3.4L
Click 'Zoom in' for large parts diagram.
Diagram Ref No 18.
Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.
99610702559
The product you are viewing cross references to these numbers
Product Information
Radiator oil cooler on engine. Fits:
Porsche 996 1998-05
Porsche 997 3.6L
Porsche 986 Boxster S 3.2L
Porsche 987 Boxster S 3.4L
Click 'Zoom in' for large parts diagram.
Diagram Ref No 18.
Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.
99610702559
99610702557
99610702559
99610722559
99610702557
376726111
99610702556
90938
8MO376726111
The product you are viewing cross references to these numbers
Vehicle Group
Vehicle Group
- Porsche Boxster S 986 3.2L 1999-02
- Porsche Boxster S 986 3.2L 2003-04
- Porsche Boxster 987 S 3.2/3.4L 2005-08/08
- 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
€169.65
Now €152.68
In Stock - 24 Hour Dispatch
Shop Securely
12 Month Warranty
Worldwide Delivery
Express Delivery
99610702559/3
Product Information
OE Match engine oil cooler / radiator designed to replace the original Porsche oil cooler that sits on the engine’s cooling circuit. It acts as a crucial element of the engine oil cooling system, transferring heat from the engine oil to the coolant or ambient airflow (depending on the specific engine layout) to maintain optimal oil temperature during operation.
Fits:
Porsche 996 1998 - 2005
Porsche 997.1 3.6L 2005 - 2008
Porsche 986 Boxster S 3.2L 1999 - 2004
Diagram Ref No 18.
The oil cooler regulates the temperature of engine oil as it circulates through the engine. By reducing thermal load on the oil, it helps:
• Maintain correct oil viscosity for effective lubrication
• Reduce wear on internal engine components
• Improve engine performance under load or high-temperature operation
• Prevent oil breakdown and reduce risk of overheating.
Without an effective oil cooler, engine oil can run too hot, degrading lubrication and potentially accelerating engine wear or promoting heat-related performance issues.
Function
• Heat dissipation: Transfers heat from the oil to coolant or airflow
• Oil temperature stability: Helps keep oil within operational temperature range
• Wear protection: Prevents high temperatures from accelerating oil degradation
• Performance support: Ensures stable lubrication for engine components under stress
The engine oil cooler operates in a harsh thermal environment and can suffer from corrosion, stone impact damage, leaks, or clogging over time. A compromised cooler can lead to:
• Overheated engine oil with reduced lubrication quality
• Increased engine wear and reduced component lifespan
• Poor performance under load and in hot conditions
• Higher risk of oil leaks or contamination
Replacing a worn or damaged oil cooler with a quality OE Match unit helps restore proper oil temperature control, improves overall engine reliability, and supports long-term performance.
When to replace. Replace the oil cooler when:
• There is visible oil leakage from the cooler or its connections
• You observe engine oil temperature issues or overheating warnings
• The cooler shows physical damage such as dents, corrosion, or deterioration
• You are performing a major engine coolant/oil system service
Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.
99610702559
The product you are viewing cross references to these numbers
Product Information
Radiator oil cooler on engine.OE Match engine oil cooler / radiator designed to replace the original Porsche oil cooler that sits on the engine’s cooling circuit. It acts as a crucial element of the engine oil cooling system, transferring heat from the engine oil to the coolant or ambient airflow (depending on the specific engine layout) to maintain optimal oil temperature during operation.
Fits:
Porsche 996 1998 - 2005
Porsche 997.1 3.6L 2005 - 2008
Porsche 986 Boxster S 3.2L 1999 - 2004
Diagram Ref No 18.
The oil cooler regulates the temperature of engine oil as it circulates through the engine. By reducing thermal load on the oil, it helps:
• Maintain correct oil viscosity for effective lubrication
• Reduce wear on internal engine components
• Improve engine performance under load or high-temperature operation
• Prevent oil breakdown and reduce risk of overheating.
Without an effective oil cooler, engine oil can run too hot, degrading lubrication and potentially accelerating engine wear or promoting heat-related performance issues.
Function
• Heat dissipation: Transfers heat from the oil to coolant or airflow
• Oil temperature stability: Helps keep oil within operational temperature range
• Wear protection: Prevents high temperatures from accelerating oil degradation
• Performance support: Ensures stable lubrication for engine components under stress
The engine oil cooler operates in a harsh thermal environment and can suffer from corrosion, stone impact damage, leaks, or clogging over time. A compromised cooler can lead to:
• Overheated engine oil with reduced lubrication quality
• Increased engine wear and reduced component lifespan
• Poor performance under load and in hot conditions
• Higher risk of oil leaks or contamination
Replacing a worn or damaged oil cooler with a quality OE Match unit helps restore proper oil temperature control, improves overall engine reliability, and supports long-term performance.
When to replace. Replace the oil cooler when:
• There is visible oil leakage from the cooler or its connections
• You observe engine oil temperature issues or overheating warnings
• The cooler shows physical damage such as dents, corrosion, or deterioration
• You are performing a major engine coolant/oil system service
Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.
99610702559
99610702557
99610702559
99610702556
The product you are viewing cross references to these numbers
Vehicle Group
Vehicle Group
- Porsche Boxster S 986 3.2L 1999-02
- Porsche Boxster S 986 3.2L 2003-04
- Porsche Boxster 987 S 3.2/3.4L 2005-08/08
- 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
€114.66
Now €103.19
In Stock - 24 Hour Dispatch
Shop Securely
12 Month Warranty
Worldwide Delivery
Express Delivery
99610702573
Product Information
Fits:
Porsche 996 Turbo / GT2
Porsche 996 GT3 3.6L 2000-05
Click 'Zoom in' for large parts diagram.
Diagram ref No 13
Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.
99610702573
The product you are viewing cross references to these numbers
Product Information
Radiator oil cooler on engineFits:
Porsche 996 Turbo / GT2
Porsche 996 GT3 3.6L 2000-05
Click 'Zoom in' for large parts diagram.
Diagram ref No 13
Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.
99610702573
99610702571
99610702573
The product you are viewing cross references to these numbers
Vehicle Group
Vehicle Group
- 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
Price: €756.86
Orderable - 14 to 28 Days
Shop Securely
12 Month Warranty
Worldwide Delivery
Free delivery
DISPLAYING 1 to 7 (of 7 products)
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About Oil Coolers / Radiators / Heat Exchangers
Engine Oil Coolers, Radiators & Heat Exchangers – Precision Cooling for Porsche Performance
The engine oil cooler and heat exchanger system plays a critical role in managing temperature within your Porsche’s engine. By transferring excess heat away from the oil and other fluids, these components ensure stable operating temperatures, consistent lubrication, and maximum engine longevity — especially under demanding performance conditions.
At Design911, we offer a full range of engine oil coolers, radiators, and heat exchangers for Porsche models old and new. Built from high-efficiency aluminium or reinforced composite materials, these components are designed to deliver superior cooling performance, durability, and perfect fitment — ensuring your Porsche performs at its best, on road or track.
Whether replacing a worn-out unit or upgrading for improved thermal efficiency, our oil cooling components provide reliable temperature control and enhanced performance.
What Do Engine Oil Coolers, Radiators & Heat Exchangers Do?
These components regulate oil and engine temperatures to maintain optimal performance and prevent overheating.
Core Functions:
- Dissipate
excess heat from the engine oil, coolant, or transmission fluid.
- Maintain
consistent oil viscosity and prevent breakdown under load.
- Protect
internal engine components from heat-related wear and failure.
- Improve overall performance efficiency during extended drives or track sessions.
Together, the oil cooler, radiator, and heat exchanger form an essential thermal management system, helping your Porsche run at peak performance while protecting vital components.
Why Do Oil Coolers & Heat Exchangers Fail?
Over time, exposure to heat cycles, vibration, and contaminants can lead to efficiency loss or complete failure.
Common Causes of Failure Include:
- Corrosion
or cracking from age or road debris impact.
- Internal
clogging caused by sludge or contaminated oil.
- Leaking
seals or fittings, reducing pressure and fluid efficiency.
- Thermal
fatigue, leading to reduced cooling capacity.
- Poor maintenance or coolant neglect, accelerating deterioration.
Symptoms of failure can include high oil temperatures, oil leaks, coolant contamination, or reduced engine performance, all of which signal the need for inspection or replacement.
Why Replace Oil Cooling Components?
Replacing a worn or leaking oil cooler, radiator, or heat exchanger is essential to preserve lubrication quality and prevent costly overheating damage. Our precision-fit, high-durability components restore proper cooling balance and reliability under all conditions.
Key Benefits:
- Restores efficient oil and fluid temperature regulation.
- Prevents overheating and engine wear.
- Improves reliability under heavy load or track use.
- Constructed from corrosion-resistant, high-performance materials.
- Direct-fit compatibility for classic and modern Porsche engines.
- Ideal for rebuilds, maintenance, and performance upgrades.
Upgrading or replacing your cooling system components helps ensure your Porsche’s engine stays efficient, durable, and ready for spirited driving.
Highlights:
- Comprehensive range of Porsche oil coolers, radiators, and heat exchangers.
- Precision-engineered for consistent temperature control.
- Constructed from lightweight, corrosion-resistant materials.
- Designed for reliability in both road and motorsport conditions.
- Improves lubrication and protects engine performance.
- Perfect for maintenance, rebuilds, or performance enhancements.
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