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Gaskets & Sets

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92810771100
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Oil Filler Cap Seal – Cork

High-quality replacement oil filler cap seal designed for Porsche 928 and 928S models.

This gasket fits within the oil filler cap, providing a secure seal to prevent oil leaks and maintain proper engine sealing. It is a critical component for ensuring clean and efficient engine operation.

Fits:

  • Porsche 928 4.5L 1978-82
  • Porsche 928S 4.7L 1981-83

Diagram ref no 31

Key Features

• Direct replacement oil filler cap seal
• Suitable for Porsche 928 and 928S models
• Superior resistance to heat, oil, and wear
• OEM-style fit and sealing performance
• Ideal for maintenance and oil leak prevention

Function and Purpose

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

It helps to:

• Prevent engine oil leaks from the filler neck
• Maintain proper engine sealing
• Protect against dirt and contamination
• Support overall engine cleanliness and performance



Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.

92810771100
92810771100

The product you are viewing cross references to these numbers
92810771100/1
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Product Information

Oil Filler Cap Seal – FKM Rubber 

High-quality replacement oil filler cap seal designed for Porsche 928 and 928S models.

This gasket fits within the oil filler cap, providing a secure seal to prevent oil leaks and maintain proper engine sealing. It is a critical component for ensuring clean and efficient engine operation.

Fits:

  • Porsche 928 4.5L 1978-82
  • Porsche 928S 4.7L 1981-83

Diagram ref no 31

Unlike the original cork version, this upgraded seal is manufactured from
modern fluorocarbon rubber (FKM), offering significantly improved resistance to heat, oil, and ageing for long-term durability.

Key Features

• Direct replacement oil filler cap seal
• Suitable for Porsche 928 and 928S models
• Upgraded FKM (fluorocarbon rubber) material
• Superior resistance to heat, oil, and wear
• OEM-style fit and sealing performance
• Ideal for maintenance and oil leak prevention

Function and Purpose

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

It helps to:

• Prevent engine oil leaks from the filler neck
• Maintain proper engine sealing
• Protect against dirt and contamination
• Support overall engine cleanliness and performance

Why Upgrade from Cork to FKM

Original cork seals are prone to deterioration over time.

Benefits of FKM material include:

• Increased resistance to oil and high temperatures
• Longer service life
• Reduced risk of cracking or shrinkage
• Improved sealing reliability



Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.

92810771100
92810771100

The product you are viewing cross references to these numbers
703141410
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Product Information
Victor-Reinz Reinzosil gasket maker valve cover oil sump sealant 300°C 70ml

victorreinz

Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.

703141410
703141410
PCG04330087
70-31414-10

The product you are viewing cross references to these numbers
DISPLAYING 17 to 19 (of 19 products)
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About Gaskets & Sets

Engine Gaskets & Gasket Sets – Precision Sealing for Porsche Engines

Engine gaskets are vital components that ensure your Porsche’s engine operates efficiently and leak-free. Positioned between key engine surfaces such as the cylinder head, intake manifold, and oil pan, gaskets maintain a perfect seal against high temperatures, pressures, and fluids.

At Design911, we offer a comprehensive range of engine gaskets, seals, and complete gasket kits for Porsche models of every generation. Each gasket is crafted from high-quality composite, metal, or elastomer materials to withstand the extreme conditions of high-performance engines — ensuring optimal sealing, reduced oil and coolant leaks, and consistent compression.

Whether you’re rebuilding a classic 911 flat-six or servicing a modern turbocharged Porsche engine, our manufacturer-quality gaskets and complete kits guarantee reliability, performance, and peace of mind.

What Do Engine Gaskets and Gasket Sets Do?

Gaskets play a critical role in ensuring that various engine systems — combustion, lubrication, and cooling — remain properly sealed.

Core Functions:

  • Prevent leaks of oil, coolant, air, and combustion gases.
  • Maintain compression between the engine block and cylinder head.
  • Ensure efficient combustion and proper engine pressure balance.
  • Protect internal components from cross-contamination of fluids.

A properly sealed engine not only improves performance and efficiency but also prevents costly long-term damage.

Why Do Gaskets Fail?

Despite their durability, gaskets naturally degrade over time due to extreme heat cycles, pressure variations, and material fatigue.

Common Causes of Gasket Failure Include:

  • Overheating, causing warping or breakdown of the gasket material.
  • Improper installation or torqueing during assembly.
  • Aging materials that harden or crack with use.
  • Chemical degradation from oil or coolant exposure.
  • Uneven pressure or engine vibration, leading to micro-leaks.

Typical symptoms of gasket failure include oil or coolant leaks, reduced compression, overheating, or visible residue at gasket joints.

Why Replace with Precision-Engineered Gaskets and Kits?

Replacing worn or leaking gaskets is essential to maintain proper engine compression, prevent contamination, and restore overall reliability. Our direct-fit gasket sets and kits are designed to meet or exceed Porsche engineering standards, providing complete sealing solutions for rebuilds and maintenance.

Key Benefits:

  • Restores proper sealing and compression integrity.
  • Prevents oil and coolant leaks for cleaner performance.
  • Enhances efficiency and reliability under load.
  • Manufactured from high-grade, heat- and pressure-resistant materials.
  • Available as individual gaskets or complete kits for full rebuilds.
  • Direct-fit compatibility for a wide range of Porsche models.

Our gasket sets are ideal for engine rebuilds, overhauls, and preventive maintenance, ensuring long-term dependability and peak performance.

Highlights:

  • Complete Porsche engine gasket kits and individual components.
  • Precision-engineered for exact sealing performance.
  • Constructed from advanced composite, metal, and elastomer materials.
  • Resistant to heat, pressure, and chemical exposure.
  • Suitable for classic air-cooled and modern water-cooled engines.
  • Ensures leak-free operation and lasting reliability.

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