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Oil Tank
By OE Match
- 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
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:
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.
Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.
99970184641
The product you are viewing cross references to these numbers
OEMatch Oil Tank — Fit, Function, Confidence
Oil tanks play a central role in Porsche lubrication systems by storing, circulating and helping to cool engine oil. In dry-sump layouts they also allow lower engine placement while ensuring steady oil delivery under varying loads. OEMatch supplies oil tank options catalogued for Porsche models to support application-specific needs.
Understanding OEMatch Oil Tank
OEM (Original Equipment Manufacturer) parts are made by the same company that produced your Porsche’s original oil tank. OE (Original Equipment) refers to parts matching original specifications for the oil tank and may be supplied by alternative manufacturers. Aftermarket parts offer alternative options, sometimes with enhanced features or better value. OEMatch supplies non-OEM oil tank engineered as direct-fit alternatives to OEM parts, made to original-spec dimensions and tolerances for Porsche models. Oil tanks store and circulate engine oil, separate air from oil to reduce foaming, and assist temperature regulation so bearings and moving parts receive steady lubrication. OEMatch maintains an extensive Porsche parts catalogue with thousands of part numbers and many OE cross-references to help identify compatible replacements; this coverage helps when matching tanks, breather components, seals and fittings to specific model requirements.
Benefits Include
- Restored oil circulation and pressure stability to protect bearings and camtrain components.
- Improved oil temperature control and reduced overheating risk under sustained load.
- Reduced foaming and improved oil film stability through effective air separation.
- Replacement seals and fittings lower the risk of external leaks and contamination.
Why Oil Tank Wear and Fail
- Cracks or leaks from vibration, impact or old mounting points.
- Corrosion from moisture, condensation or degraded oil.
- Blocked breathers or vents causing pressure imbalance and reduced flow.
- Internal contamination such as sludge or metal debris impairing circulation.
The Importance of Replacing with OEMatch Oil Tank
A leaking or damaged oil tank can lead to oil loss, low pressure or poor cooling, increasing the risk of severe engine damage. Timely replacement restores correct oil flow and pressure, prevents oil starvation and helps maintain reliable lubrication under road or track conditions. Where components affect pressure, breathers or sensor interfaces, check mounting, seals and associated hoses during replacement and follow model-specific procedures for installation and inspection.
Advantages
- Manufactured to original-spec dimensions and tolerances so units fit original mounting points and clearances.
- Materials and construction chosen to resist corrosion and mechanical stress, including high-grade alloys or reinforced composites where specified.
- Catalogued references and cross-checks to simplify selection for Porsche models and related breather, seal and hose parts.
