Engine cylinder head exhaust valve. Porsche 993 C2 / C4 1994-95  ❭  99310541901

Engine cylinder head exhaust valve. 
The Porsche Genuine OE Exhaust Valve is a factory-specified engine component designed for the air-cooled flat-six engines used in Porsche 993 models. This precision-machined valve forms part of the engine’s valvetrain and controls the flow of exhaust gases leaving the combustion chamber.
Sold individually, 6 required per vehicle

Fits:
Porsche 993 C2 / C4 3.6L 1993 - 1995
 * with Engine codes:  M64.05 / M64.06 / M64.07 / M64.08

Diagram Ref No 10

The exhaust valve opens and closes in precise synchronization with the engine’s camshaft to allow burnt combustion gases to exit the cylinder after the power stroke. Once the exhaust gases are expelled, the valve closes tightly to seal the combustion chamber during the intake and compression cycles.

Proper valve operation is essential for maintaining engine efficiency, performance, and emissions control, as well as ensuring smooth engine operation at all speeds.

Functions & Technical Role
•  Exhaust gas release: Allows combustion gases to exit the cylinder during the exhaust stroke
•  Combustion sealing: Forms a tight seal against the valve seat when closed
•  Heat resistance: Constructed from high-temperature alloy materials to withstand extreme exhaust heat
•  Precision timing: Operates in coordination with the camshaft and valve train components
•  OEM durability: Manufactured to Porsche specifications for longevity and reliable performance

Exhaust valves operate under extreme temperatures and mechanical stress. Over time they can suffer from wear, burning, or seat damage, which may lead to reduced engine performance or compression loss. Replacing worn valves with genuine Porsche OE components ensures proper engine sealing, reliable performance, and long-term durability.

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99310541901

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