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Exhaust valve. Porsche 996 3.6L / 997 3.6L / 997 3.8L / Boxster 987 3.4L ❭ 99610527304
- Porsche Boxster 987 S 3.2/3.4L 2005-08/08
- Porsche 996 C2 3.6L 09/01-2005
- Porsche 996 C4 3.6L 09/01-2005
- Porsche 996 C4S 3.6L 09/01-2005
- Porsche 997 MK1 Carrera 2 3.6L 2005-08
- Porsche 997 MK1 Carrera 2S 3.8L 2005-08
- Porsche 997 MK1 Carrera 4 3.6L 2005-08
- Porsche 997 MK1 Carrera 4S 3.8L 2005-08

Fits:
Porsche 996 3.6L 2001>> M96.03
Porsche 997 3.8L M97.01
Porsche 997 3.6L M96.05
Porsche 987 Boxster 3.4L
Click 'Zoom in' for large parts diagram.
Diagram ref no 9.
Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.
99610527304
The product you are viewing cross references to these numbers
- 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 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
This spring pair fits all 911's from 1965 to 1994.

Fits:
Porsche 911 1965-89
Porsche 964 1989-94
Click 'Zoom in' for large parts diagram.
Diagram Ref No 13.
Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.
90110590151
The product you are viewing cross references to these numbers
- Porsche 964 (911) C2 1989-93
- Porsche 964 (911) C4 1989-93

Fits:
Porsche 964 C2 / C4 1989-94
Click 'Zoom in' for large parts diagram.
Diagram Ref No 2, 2A.
Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.
964104321
The product you are viewing cross references to these numbers
- Porsche 964 (911) C2 1989-93
- Porsche 964 (911) C4 1989-93
This is a sodium-filled exhaust valve designed to Porsche’s original specifications, as used in 964 Carrera (C2 / C4) 3.6L engines (1990–94). The sodium fill helps dissipate heat from the valve head into the valve stem, improving thermal management under exhaust conditions.
Sold each, 6 required per car.
Fits:
Porsche 964 Carrera 2 / Carrera 4 3.6L 1989 - 1994 (M64.01 / M64.02)
Porsche 964 RS Carrera 3.6L 1991 - 1994 (M96.03)
Diagram Ref No 12.
What exhaust valve does:
• Seals the combustion chamber on the exhaust side, opening and closing at the correct times to allow exhaust gases to exit
• The internal sodium enhances heat transfer, reducing valve temperature, helping prevent distortion or burning
• Works in tandem with valve springs, guides, and seats to maintain consistent cylinder head performance
Over time, exhaust valves undergo extreme heat cycles, which can lead to wear, bending, warping, or pitting on the sealing face. A faulty or damaged exhaust valve can lead to compression loss, misfires, reduced power, excessive smoking, or engine damage. Replacement improves reliability, restores engine efficiency, and ensures long life under high temperature conditions
• It fits in the cylinder head’s exhaust valve seat for Porsche 964 the exhaust port side of each combustion chamber
• The valve stem goes through the valve guide in the head, and the head of the valve seals against the exhaust seat when closed, with its tip actuated by the rocker or cam mechanism.
Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.
96410541904
The product you are viewing cross references to these numbers
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