Oil tank washer. Porsche 911 1965-89  ❭  90110769200

Oil tank washer.
Genuine Porsche original equipment (OE) oil tank washer for Porsche 911 (1965–1989). It’s a sealing washer used on the oil tank/oil system connections to help create a tight, leak-free joint.

Fits:
Porsche 911 1965 - 1989
Porsche 914-6 1970 - 1976

Diagram ref no 14

It seals a connection point in the oil tank/oil line system, helping prevent oil seepage at the fitting and maintaining correct oil system integrity.

Function:
• Creates a sealed joint at an oil tank or oil line connection
• Helps prevent oil leaks and seepage
• Supports reliable oil system operation under heat and vibration.

Washers can deform, harden, or lose sealing effectiveness after removal or long-term heat exposure. Replacing with a genuine Porsche washer ensures the correct fit and sealing performance, helping avoid persistent oil leaks and messy engine bay/underside contamination.

When to replace:
• When an oil tank/oil line fitting is loosened or removed
• Evidence of oil seepage at the joint
• Washer appears crushed, scored, or hardened
• During oil tank, oil line, or engine service work

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Related, superseded, cross reference or alternative numbers for comparison.

90110769200

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