O-ring cylinder base 102x2. Porsche 964 /993  ❭  99970715240

O-ring cylinder base 102 x 2. 
Fitted into the cylinder base sealing groove, the O-ring compresses between the cylinder and crankcase to form an oil-tight barrier that withstands temperature changes and engine vibration.
Sold each, 6 required per car.

Fits:
Porsche 964 Carrera 2 / Carrera 4 / RS / turbo  1989 - 1994
Porsche 993  Carrera 2 / Carrera 4 / Carrera S / Carrera 4S / turbo 1994 - 1997

Diagram ref no 2

This OE Match O-ring is manufactured to OE-equivalent dimensions and material properties to provide a reliable seal at the cylinder-to-case interface. Correct sealing here is essential to prevent oil seepage during heat cycles and maintain a clean, properly sealed engine during rebuild or maintenance work. Ideal for engine overhauls, reseals, or any time cylinders are removed, this direct-fit O-ring restores the original sealing function without modification.

Old O-rings can harden, flatten, or crack with age and heat, increasing the likelihood of oil seepage at the cylinder base. Replacing them during engine work helps ensure a proper reseal, reducing leaks and protecting surrounding components from oil contamination.

When to replace:
•  During engine rebuilds or top-end work (cylinders removed)
•  Any time cylinder bases are resealed
•  Visible oil seepage at cylinder-to-case area
•  High-mileage preventative reseal

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99970715240

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