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- Porsche 911 1965-1968 2.0L / 912 SWB (F)
- Porsche 911 1968-1973 2.2L / 2.4L / 2.7L RS LWB (F)
- Porsche 911 1974-1977 2.7L / 1976-77 3.0 Carrera
- Porsche 911 1978-1983 3.0L / SC
- Porsche 911 1984-1986 3.2L
- Porsche 911 1987-1989 3.2L G50
- Porsche 911 1975-1977 3.0L Turbo (930)
- Porsche 911 1978-1989 3.3L Turbo (930)
- Porsche 914 (1970-1976)
Porsche Oil Tank Mounting Washer - Precision Mounting Component for 911 (1965–1989) & 914-6
Sold each - 2 required per car
The oil tank mounting washer is a small yet vital part of the Porsche dry-sump lubrication system, designed to secure the oil tank in position and maintain proper sealing under vibration and temperature variations. This precision-engineered washer ensures that the oil tank remains stable, preventing movement or leaks that can affect oil flow and engine performance.
Fits:
- Porsche 911 1965-1968 2.0L / 912 SWB (F)
- Porsche 911 1968-1973 2.2L / 2.4L / 2.7L RS LWB (F)
- Porsche 911 1974-1977 2.7L / 1976-77 3.0 Carrera
- Porsche 911 1978-1983 3.0L / SC
- Porsche 911 1984-1986 3.2L
- Porsche 911 1987-1989 3.2L G50
- Porsche 911 1975-1977 3.0L Turbo (930)
- Porsche 911 1978-1989 3.3L Turbo (930)
- Porsche 914-6 (1970-1976)
Diagram ref no 15
We supply high-quality replacement oil tank mounting washers crafted to the same dimensional standards as the original Porsche components. Manufactured from durable, corrosion-resistant materials, these washers are designed to withstand continuous exposure to oil, heat, and pressure—making them ideal for classic Porsche maintenance and restorations.
What Does the Oil Tank Mounting Washer Do?
The oil tank mounting washer plays a crucial role in your Porsche’s lubrication and engine stability system.
Core Functions:
- Secures the oil tank to the chassis mounting points.
- Distributes load evenly across the mounting area.
- Prevents vibration and movement during operation.
- Ensures proper sealing against leaks or oil seepage.
- Maintains correct alignment for oil line connections.
Without a properly functioning washer, the oil tank can shift slightly, leading to unwanted vibrations, stress on oil fittings, or even oil leaks that compromise system pressure.
Why Do Oil Tank Mounting Washers Fail?
Despite their small size, mounting washers endure extreme conditions—heat, vibration, and oil exposure. Over time, this can lead to wear and failure.
Common Causes of Failure Include:
- Thermal fatigue from repeated heat cycles.
- Corrosion caused by prolonged contact with oil and moisture.
- Metal fatigue from vibration or overtightening.
- Deformation or cracking due to age or mechanical stress.
- Loss of elasticity or tension affecting mounting stability.
When a washer becomes worn or corroded, it can no longer secure the tank properly—potentially leading to oil leaks, vibration noise, or tank misalignment.
Why Replace or Upgrade Your Oil Tank Mounting Washer?
Replacing a worn or damaged oil tank mounting washer restores secure fitment and ensures the integrity of your oil system. This simple yet essential component helps prevent larger mechanical issues and supports consistent lubrication performance.
Key Benefits:
- Restores proper oil tank stability and alignment.
- Prevents vibration, leaks, or stress on mounting bolts.
- Maintains efficient oil system pressure and performance.
- Manufactured to precise Porsche specifications for accurate fit.
- Constructed from high-grade, oil- and heat-resistant material.
- Ideal for Porsche 911 (1965–1989) and 914-6 restoration or maintenance.
Our Design911 mounting washers deliver reliable, long-lasting performance—perfect for enthusiasts maintaining classic Porsche engineering precision.
Highlights
- Designed for Porsche 911 (1965–1989) and Porsche 914-6 models.
- Precision-fit replacement washer for oil tank mount.
- Crafted from high-strength, corrosion-resistant materials.
- Withstands high temperatures and oil exposure.
- Essential for dry-sump system reliability.
- Ideal for restoration, maintenance, or preventative servicing.
Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.
90110769301
The product you are viewing cross references to these numbers
- Porsche Boxster 986 2.5L 1997-99
- Porsche Boxster 986 2.7L 1999-02
- Porsche Boxster S 986 3.2L 1999-02
- Porsche Boxster 986 2.7L 2003-04
- Porsche Boxster S 986 3.2L 2003-04
Fits:
Porsche 986 Boxster 1997-04
Diagram Ref No 19
Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.
99610725403
The product you are viewing cross references to these numbers
- Porsche Boxster 986 2.5L 1997-99
- Porsche Boxster 986 2.7L 1999-02
- Porsche Boxster S 986 3.2L 1999-02
- Porsche Boxster 986 2.7L 2003-04
- Porsche Boxster S 986 3.2L 2003-04
- Porsche Boxster 987 2.7L 2005-08/08
- Porsche Boxster 987 S 3.2/3.4L 2005-08/08
Fits:
Porsche 986 Boxster 1997-04
Porsche 987 Boxster 2005>>
Click picture for large parts diagram.
Diagram Ref No 17.
- Porsche Boxster 986 2.5L 1997-99
- Porsche Boxster 986 2.7L 1999-02
- Porsche Boxster S 986 3.2L 1999-02
- Porsche Boxster 986 2.7L 2003-04
- Porsche Boxster S 986 3.2L 2003-04
Fits:
Porsche 986 Boxster 1997-04
Click picture for large parts diagram.
Diagram Ref No 15.
Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.
99610715006
The product you are viewing cross references to these numbers