Oil Radiators / Heat Exchangers

Front Radiator Engine Oil Cooler "Snake Type" 

Restore efficient oil temperature control to your classic air-cooled Porsche with this OE Match Front Radiator Engine Oil Cooler. Better known as the Snake Type Oil Cooler or Trombone Oil Cooler, this OE-quality replacement is designed to match the original equipment fitted to Porsche 911 models.

Fits:

• Porsche 911 1974-1977 2.7L / 1976-77 3.0 Carrera
• Porsche 911 1978-1983 3.0L / SC
• Porsche 911 1975-1977 3.0L Turbo (930)
• Porsche 911 1978-1989 3.3L Turbo (930)

Positioned within the front right-hand wheel arch, the Trombone Oil Cooler forms an integral part of Porsche's legendary dry sump lubrication system. Its distinctive looped tube design increases the surface area exposed to airflow, allowing engine oil to dissipate heat before returning to the oil tank. Although simple in construction compared to later finned radiator-style coolers, the Trombone Oil Cooler proved to be an effective and reliable solution for controlling engine oil temperatures in early impact bumper 911s and first-generation 930 turbos.

Manufactured to OE Match specifications, this replacement offers factory-correct fitment, dependable performance and excellent durability, making it the ideal choice for restorations, preventative maintenance and originality-focused repairs.

What Does the Snake Type (Trombone) Oil Cooler Do?

Unlike water-cooled engines, air-cooled Porsche engines rely heavily on engine oil to remove heat as well as lubricate internal components. The front-mounted Trombone Oil Cooler helps to:

• Reduce engine oil temperatures.
• Improve heat dissipation during sustained driving.
• Maintain stable oil viscosity.
• Protect pistons, bearings and internal engine components.
• Improve engine reliability during hot weather and spirited driving.
• Extend engine life by maintaining consistent operating temperatures.

By cooling the oil before it returns to the engine, the Trombone Oil Cooler plays a vital role in preserving the health of your classic flat-six engine.

Why Do Trombone Oil Coolers Need Replacing?

After decades of service, the original oil cooler may suffer from:

• External corrosion caused by moisture and road salt.
• Stone damage from debris entering the wheel arch.
• Impact damage.
• Internal contamination.
• Fatigue cracks or pinhole leaks.
• Damage caused during previous repairs.
• Reduced cooling efficiency due to age.

Even a minor oil leak can lead to falling oil pressure and increased engine temperatures, making timely replacement essential.

Symptoms of a Failing Oil Cooler

Common warning signs include:

• Engine oil leaks around the front wheel arch.
• Oil residue on the cooling loop.
• Rising engine oil temperatures.
• Burning oil smell after driving.
• Visible corrosion or physical damage.
• Reduced cooling performance.
• Falling oil level without obvious engine leaks.

Any evidence of oil leakage should be investigated immediately to prevent costly engine damage.

When Should the Oil Cooler Be Replaced?

Replacement is recommended when:

• Oil leaks develop.
• The cooling loop becomes corroded or damaged.
• Accident damage has occurred.
• Restoring a classic Porsche to factory condition.
• Replacing front oil pipes or oil lines.
• Carrying out a complete engine rebuild or lubrication system overhaul.

Replacing ageing oil cooling components helps maintain optimum lubrication and protects your engine for years to come.

Why Choose an OE Match Oil Cooler?

Our OE Match Snake Type Oil Cooler has been manufactured to faithfully reproduce the original Porsche component.

Benefits include:

• Authentic Snake Type (Trombone) configuration.
• OE-quality construction and fitment.
• Precision-formed cooling loop.
• Excellent oil flow characteristics.
• Corrosion-resistant finish.
• Straightforward installation using factory mounting points.
• Perfect for restoration and maintenance projects.       

Related reference numbers
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91120705001

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Radiator engine oil cooler.
Radiator type fits in engine compartment.



Fits:
Porsche 911 1972-89

Click 'Zoom in' for large parts diagram.
Diagram Ref No 8.

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91110704102

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Radiator engine oil cooler.
This radiator type oil cooler fits in the engine compartment on Porsche 911 models. It forms part of the engine oil cooling system and should be installed according to the factory oil cooler layout and sealing arrangement.

Fits:
Porsche 911 1972 - 1989

Diagram ref no 8.

The engine oil cooler helps reduce engine oil temperature by allowing heat from the oil to transfer through the cooler core. Correct oil cooling is essential on air-cooled Porsche engines, as the oil plays an important role in lubrication, heat control, and long-term engine reliability.

Functions
•  Replaces the engine compartment oil cooler
•  Helps regulate engine oil temperature
•  Supports correct lubrication and cooling performance
•  Assists in protecting the engine from excessive oil temperatures
•  Helps maintain stable operation during normal and demanding driving
•  Replaces leaking, blocked, corroded, or damaged original oil coolers
•  OE Match replacement for engine oil cooling system repair.

Why Replace This Part?
Engine oil coolers can become blocked, corroded, damaged, or leak with age, heat cycling, vibration, and long-term oil exposure. A faulty oil cooler can cause oil leaks, reduced cooling efficiency, higher engine temperatures, contaminated cooling fins, or poor lubrication performance. Replacing the oil cooler helps restore effective oil temperature control and supports reliable engine operation.

When to Replace This Part
•   The oil cooler is leaking engine oil
•   Oil residue is visible around the cooler or engine compartment area
•   Engine oil temperatures are higher than normal
•   The cooler core is blocked, corroded, or damaged
•   The engine is being rebuilt or resealed
•   Oil cooling system components are being serviced
•   The vehicle is undergoing Porsche 911 engine restoration or preventative maintenance

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91110704102

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Radiator Oil Cooler - Front.

Fits:
Porsche 911 3.2L / 3.0L 1980-89

Porsche 911 3.3L Turbo 1980-89

When you add the cooler to your basket you will have an option to select temperature sensor or the blanking plug (and washer)
Please add as and when required. The cooler doesn't come with either of the options included.

Diagram Ref No 13

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93020705304

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Radiator oil cooler bottom plate. 



Fits:
Porsche 911 1984-89

Diagram Ref No 33.

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Fits:
Porsche 911 Turbo 3.3L 1984-89
930.66 / 930.68 (Canada / USA)

Click 'Zoom in' for large parts diagram.
Diagram Ref No 32

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Radiator oil cooler rubber buffer.
The Porsche 93020723900 / 93020723901 / 93020723902 Bonded Rubber Buffers are factory-original components designed to mount and stabilize the oil cooler assembly in air-cooled Porsche 911 and Turbo models. Each mount uses a precision-bonded rubber and steel design that isolates vibration and absorbs engine movement, protecting the oil cooler and its lines from stress and damage.
Sold individually, 3 required per car

Fits:
Porsche 911 1984 - 1989

Diagram Ref No 14.

Located between the oil cooler housing and the chassis or engine bracket, these buffers play a vital role in maintaining correct alignment and reducing vibration throughout the cooling system. Over time, exposure to heat, oil, and vibration can cause the rubber to harden or crack. Replacing with genuine Porsche parts restores factory stability, vibration isolation, and long-term reliability.

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93020723902

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Radiator oil cooler rubber buffer.
This replacement buffer is a high-quality replacement for the factory bonded-rubber mounts used to support the oil cooler assembly in air-cooled Porsche engines. It helps isolate vibration, maintain correct alignment, and protect the cooler and adjoining hardware.
Sold each, required 3 per car.

Fits:
Porsche 911 1984 - 1989

Diagram Ref No 14.

This is a rubber buffer or mount (often bonded to metal inserts) used to cushion and secure the oil cooler assembly relative to the engine or chassis. It absorbs vibration, prevents metal-to-metal contact, and keeps the cooler in its correct position. It helps avoid stresses on oil cooler brackets, lines, and mating surfaces by providing a flexible mounting point.

Replaces: Porsche 930.207.239.00 / 930.207.239.01 / 930.207.239.02
Position: Between oil cooler and engine or chassis mount — isolates vibration and supports alignment
Function: Absorbs vibration and engine movement, prevents stress on oil cooler lines and brackets
Installation: Direct-fit OE replacement — install as a set for best results
Maintenance Tip: Replace when rubber hardens, cracks, or separates from metal housing

Over time, the rubber in the buffer mount degrades due to heat, oil exposure, ozone, vibration, and fatigue. It may harden, crack, shrink, or separate from its bonded metal insert. A failed mount lets the oil cooler shift or vibrate more than designed, putting strain on cooler hoses, brackets, and mounting flanges — potentially leading to leaks or damage. Excessive vibration may cause noise, misalignment, or premature fatigue of supporting parts. You should replace this buffer when you notice damage or deterioration, when removing or servicing the oil cooler, or as preventive maintenance on high-mileage engines.

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93020723902

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Radiator Oil Cooler Rubber Gasket.



Fits:
Porsche 911 1984-89

Click 'Zoom in' for large parts diagram.
Diagram Ref No 31.

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Fits:
Porsche 911 1980>>

Click 'Zoom in' for large parts diagram.
Diagram Ref No 13D

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Radiator oil cooler rubber mount washer 8,4.
This washer installs easily under the head of the appropriate fastener and is ideal for use during cooler service, radiator/oil cooler removal, or when replacing corroded or worn mounting hardware.
Sold individually

Fits:
Porsche 911 1980 >>

Diagram Ref No 13C

This OE Match washer provides the proper interface between the fastener head and the mounting surface, helping to preserve mounting integrity while preventing pull-through or surface damage.

The radiator/oil cooler mount washer provides a stable bearing surface for mounting fasteners. It helps distribute compression load evenly, protects softer materials from indentation, and ensures that radiator and oil cooler brackets stay correctly aligned and securely attached under dynamic driving conditions.

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90002500703

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Radiator oil cooler rubber mount washer, 8,4.
This OEM washer is used in the radiator and oil cooler mounting points on 911 models from the early 1980s onward to help secure cooling system hardware with correct clamping force and long-term durability.
Sold individually

Fits:
Porsche 911 1980>>

Diagram Ref No 13C

The Porsche Genuine OE Radiator/Oil Cooler Mount Washer 90002500703 is a small but essential fastener component used in the cooling system of classic 911 models (1980 onward). Its correct dimensions, material, and quality help ensure radiator and oil cooler mounts remain secure under thermal, vibration, and road loads — preserving efficient engine cooling and long-term reliability.

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Radiator oil cooler rubber mount .



Fits:
Porsche 911 1978-89

Click 'Zoom in' for large parts diagram.
Diagram Ref No 13B

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Radiator oil cooler rubber mount.
This radiator oil cooler rubber mount is an replacement rubber isolator designed to support the radiator oil cooler on classic Porsche 911 models 1978–1989.
It cushions and secures the radiator oil cooler within the engine bay, reducing vibration and noise while helping maintain correct positioning of the cooler assembly. It matches original factory specifications so it installs directly into the intended mounting points with no modification required.
Sold each.

Fits:
Porsche 911 1978 - 1989

Diagram ref no 13B

The rubber mount absorbs engine and road vibration, helping to isolate the oil cooler from harsh movement and protect it from stress and fatigue. It keeps the cooler properly aligned, preventing undue strain on hoses, fittings, and brackets.

Built to support the weight of the radiator oil cooler and dampen dynamic forces, this mount mitigates vibration transfer throughout the engine bay. It ensures the oil cooler remains stable under thermal expansion, engine torque, and chassis motion while helping minimise noise and wear.

Over time, rubber mounts deteriorate from heat, age, and exposure to oil and road contaminants. A worn or broken mount can allow excessive cooler movement, leading to hose fatigue, oil leaks, and compromised cooling performance. Replacing it with an OE-match mount restores proper support and prolongs the life of your oil cooler system.

When to replace:
•  Visible cracks, splits, or deformation in the rubber
•  Loose or sagging radiator oil cooler
•  Increased vibration or noise from the engine compartment
•  During oil cooler removal or engine work
•  As part of preventive maintenance

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Fits:
Porsche 911 1984-89

Click 'Zoom in' for large parts diagram.
Diagram Ref No 28.

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Fits:
Porsche 911 1984>>1989

Diagram Ref No 42

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