Porsche 944 S2 / 928 Oil Cooler Adapter

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To $134.80

Part #
EPR-100 Configurator

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  • Oil cooler adapter for Porsche 944 S2 (engine block and oil cooler) and 1990-1995 Porsche 928 (engine block only)
  • Replace aging factory lines with new AN lines or install an aftermarket oil cooler
  • Standard -10AN O-ring boss ports with optional adapters available for -10AN and -12AN
  • Lifetime Warranty. Made in the USA.

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Part # EPR-100 Configurator
Customize Porsche 944 S2 / 928 Oil Cooler Adapter
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Porsche 944 S2 / 928 Oil Cooler Adapter
Porsche 944 S2 / 928 Oil Cooler Adapter

In stock

Free shipping on USA orders over $49



    Improved Racing's oil cooler adapter for the Porsche 944 S2 and late model 928 allows you to convert the aging factory oil cooler lines to AN lines or connect an aftermarket oil cooler. Because the factory lines have been discontinued, this is often the only option available.

    The 944 S2 uses these twin ports on both the engine block and oil cooler. By replacing both, you can run custom aftermarket AN lines between the two. You can also use this adapter on the engine block side only to adapt it to an aftermarket oil cooler.

    The later year (1990-1995) Porsche 928 generally uses these twin ports on the engine block side only. Some 928 models may have an oil cooler with these twin ports as well, but more commonly they are independent ports on opposite ends of the cooler.

    The oil line ports are -10AN O-ring boss ports and adapters are available for -10AN and -12AN lines.

    Features and Benefits

    • Bolts directly to the factory engine block and oil cooler, allowing an aftermarket oil cooler or aftermarket AN lines to be used
    • -10AN (JIC/SAE) O-ring boss ports for oil lines
    • CNC-machined 6061-T6 billet aluminum construction with MIL-A-8625 Type II black anodized finish
    • FKM (Viton) O-ring seals for maximum temperature range, fluid compatibility, longevity and reliability
    • Lifetime Warranty
    • Made in the USA

    Available in -8AN, -10AN, or -12AN
    Optional Adapter Fittings Available in -10AN or -12AN


    • 1x Oil cooler adapter
    • 2x Viton (FKM) O-ring seals
    • 1x M8 Mounting screw


    • 1989-1991 Porsche 944 (S2), turbo (951) and N/A models, engine side and oil cooler side
    • 1990-1995 Porsche 928, engine side only
    Part #
    EPR-100 Configurator
    Drop Ship Item
    Special Order Item
    Improved Racing
    Primary Material
    6061-T6 aluminum
    Type II Anodized
    Minimum Operating Temperature
    -40°F (-40°C)
    Maximum Operating Temperature
    302°F (150°C)
    Inlet Port Size
    -10AN O-Ring Boss Female
    Outlet Port Size
    -10AN O-Ring Boss Female
    Maximum Operating Pressure
    300 psi (20.68 bar)
    Max Recommended Flow Rate
    Up to 20 GPM (76 LPM)
    Fluid Compatibility
    Engine oil
    Transmission fluid
    Instruction Manuals
    Instruction manual for Porsche 944 S2 / 928 oil cooler adapter
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