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Engine cylinder cover base gasket. Porsche 993 RS ❭ 99970502341
- Porsche 996 TURBO 2000-05
- Porsche 996 GT2 2001-05
- Porsche 996 GT3 MKI 1999-02
- Porsche 996 GT3 MKII 2003>>
- Porsche 996 GT3 RS 2003-04
- Porsche 997 MK1 TURBO 2007-09
- Porsche 997 MK1 GT3 / GT3 RS 2007-09
- Porsche 997 MK1 GT2 2007-09
- Porsche 997 MKII Turbo 2010-13
- Porsche 997 MKII GT2 RS 2011-13
Often referred to as a rubber seal ring or O-ring, it is designed to fit precisely in its designated groove where the rotating or stationary component meets a housing, providing a durable and leak-resistant interface.
Sold each.
Fits:
Porsche 993 Carrera RS 3.7L 1995 - 1998
Diagram ref no 4
The sealing ring helps prevent oil, coolant or other fluids from leaking between closely fitted engine/transmission surfaces. It forms a compression seal around shafts or bores where fluid containment is critical. A properly functioning seal keeps fluids contained, minimizes the risk of contamination, and preserves lubrication where it’s needed most - such as around pistons, cylinders, or fluid passages.
• Application: Engine or drivetrain sealing ring used in cylinder base or other fluid interface points where a precise rubber seal is required to maintain fluid containment and mechanical integrity.
Replace this sealing ring if you notice:
• Visible fluid leaks around engine or transmission joint areas
• Low oil or fluid levels without external explanation
• During engine or transmission removal and service
• When original seals show visible wear, cracking, or hardening
Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.
99970502341
The product you are viewing cross references to these numbers
- Porsche 911 1965-1968 2.0L / 912 SWB (F)
- Porsche 356 1950-55
- Porsche 356A 1955-59
- Porsche 356B 1959-63
- Porsche 356C 1963-65
Fits:
Porsche 356
Porsche 912
Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.
61610018403
The product you are viewing cross references to these numbers
- Porsche 356 1950-55
- Porsche 356A 1955-59
2 required per car.

Fits:
Porsche 356 Pre-A / 356 A Super engines
Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.
61608902
The product you are viewing cross references to these numbers
- Porsche 911 1965-1968 2.0L / 912 SWB (F)
- Porsche 356 1950-55
- Porsche 356A 1955-59
- Porsche 356B 1959-63
- Porsche 356C 1963-65

Fits:
Porsche 912 1965-69
Porsche 356 1950-65
Click 'Zoom in' for large parts diagram.
Diagram ref no 45
Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.
53901125
The product you are viewing cross references to these numbers
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