Sealing Plug Engine Oil Sump M20x1.5x18. Porsche 982 Boxster Spyder / Cayman GT4 RS / 992 GT3 / RS / ST  ❭  PAF008323

Oil drain plug O-ring / seal ring (approx. 18 mm × 24 mm), used under the oil drain plug.
This small but critical component creates a secure, leak-proof seal between the oil drain plug and the engine’s oil pan to prevent engine oil seepage. It is sized and manufactured to match the original Porsche specification for a reliable fit and sealing performance.
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Porsche 991

Diagram ref no 24

This premium OE Match seal ring (also referred to as a crush washer or gasket) is engineered to the correct inner/outer diameters and material thickness used by Porsche on multiple model platforms.

The seal ring is ideal for use during every oil change where the drain plug has been removed and reinstalled, and whenever the original ring shows signs of compression set, distortion, corrosion, or damage. This OE Match version delivers a direct fit and consistent sealing performance comparable to the factory-specified part.

The oil drain plug seal ring sits between the oil drain plug head and the engine oil pan surface. When the drain plug is torqued to specification, the seal ring compresses slightly to form a fluid-tight barrier, preventing engine oil from escaping the sump under pressure or vibration. A proper seal helps maintain correct oil levels and prevents messy leaks on the road or in the garage.

Function: Installed each time the engine oil drain plug is removed, the seal ring is “crushed” into place during installation, creating an even seal around the drain hole. Its function is critical because even small oil leaks can lead to reduced oil levels, potential engine damage, and contamination of suspension or exhaust components. The OE Match ring reproduces the original’s sealing surface characteristics so that torque and compression behavior remain within factory-designed tolerances.

Oil drain plug seal rings are single-use sealing components that deform each time the plug is installed. Reusing an old or compressed ring can lead to oil drips or leaks, especially under heat cycling and vibration. A proper OE Match seal ring ensures a dependable oil-tight seal, helping to preserve engine lubrication integrity, avoid oil loss, and protect against environmental contamination.

When to replace:
•  Every time the **oil drain plug is removed”
•  If existing seal ring shows cracks, flattening, or corrosion
•  When performing routine oil and filter service
•  After discovering minor oil seepage at the drain plug
•  During engine maintenance or oil pan removal

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

90012310630

The product you are viewing cross references to these numbers

Oil pan gasket.



Fits:
Porsche 982 (718) Boxster 2017>>
Porsche 982C (718C) Cayman 2017>>

Click 'Zoom in' for large parts diagram.
Diagram ref no 9

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

9A210733702

The product you are viewing cross references to these numbers

Oil pan gasket.



Fits:
Porsche 982 (718) Boxster 2017>>
Porsche 982C (718C) Cayman 2017>>

Click 'Zoom in' for large parts diagram.
Diagram ref no 9

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

9A210733702

The product you are viewing cross references to these numbers