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Porsche > Engine Rebuild Parts > Oil System Parts > Filler Neck Parts >

Oil Filler Cap Seal. Porsche 911 / 964 / 924S / 928 / 944 / 968  ❭  99970184641

Oil Filler Cap Seal. Porsche 911 / 964 / 924S / 928 / 944 / 968 - 99970184640, 99970184641 - PDOE4
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Product Information
Product Information

Oil Filler Cap Seal 

High-quality replacement oil filler cap seal designed for a wide range of Porsche models.

This gasket fits within the oil filler cap, ensuring a tight and secure seal to prevent oil leaks and protect the engine from contamination. It is an essential component for maintaining proper engine sealing and cleanliness.

Fits:

  • Porsche 911 1984-1986 3.2L
  • Porsche 911 1987-1989 3.2L G50
  • Porsche 911 1978-1989 3.3L Turbo (930)
  • Porsche 964 (911) C2 1989-93
  • Porsche 964 (911) C4 1989-93
  • Porsche 964 (911) RS 3.6L 1991-93
  • Porsche 964 (911) RS 3.8L 1991-93
  • Porsche 964 (911) TURBO 3.3L 1991-93
  • Porsche 964 (911) TURBO 3.6L 1991-93
  • Porsche 924S 2.5L 1986-87
  • Porsche 924S 2.5L 1988
  • Porsche 944 2.7L 8V 1988-89
  • Porsche 944S 2.5L 16V 1987-88
  • Porsche 944S2 3.0L 16V 1989-91
  • Porsche 944 Turbo 2.5L 8V 1985-88
  • Porsche 944 Turbo 2.5L 8V 1989-91
  • Porsche 944 Turbo S 2.5L 8V 1988
  • Porsche 968 3.0L 1992-94
  • Porsche 968 Sport 3.0L 1994-95
  • Porsche 968 CS 3.0L 1993-95
  • Porsche 968 Turbo S 3.0L 1993-94
  • Porsche 928S4 5.0L 1987-92
  • Porsche 928GT 5.0L 1989-91
  • Porsche 928GTS 5.4L 1992-95

Diagram ref no 12

Manufactured to OEM specifications, this seal provides precise fitment and reliable long-term performance—ideal for routine maintenance or resolving oil seepage issues.

Key Features

• Direct replacement oil filler cap seal
• Suitable for multiple Porsche models
• Ensures secure sealing of oil filler cap
• OEM-style fit and performance
• Durable material resistant to heat and oil
• Ideal for maintenance and leak prevention

Function and Purpose

This seal ensures a proper closure of the oil filler cap.

It helps to:

• Prevent engine oil leaks
• Maintain engine cleanliness
• Protect against dirt and contamination
• Support consistent engine performance

Why Replace Your Oil Filler Cap Seal

Over time, seals can degrade due to heat and oil exposure.

Common issues include:

• Oil seepage around the filler cap
• Hardened or cracked seal material
• Reduced sealing effectiveness
• Increased risk of contamination

Replacing the seal restores proper engine sealing and prevents leaks.



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