Valve Collet (1 half), for inlet / outlet valve. Porsche 356  ❭  369052041

Valve spring.



Fits:
Porsche 944 2.5L, 2.7L 1985-89
Porsche 924S 1986-88

Click 'Zoom in' for large parts diagram.
Diagram Ref No 14.

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92810590509

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Engine Cylinder Head Exhaust Valve.
The OE Match Engine Cylinder Head Exhaust Valve is a high-quality replacement valvetrain component designed to control the release of exhaust gases from the combustion chamber. Manufactured to OE specifications for fit, precision and durability, this exhaust valve plays a critical role in maintaining engine efficiency, performance and reliability.  

Fits:

• Porsche 924S 2.5L 1986-87
• Porsche 924S 2.5L 1988
• Porsche 944 2.5L 8V 1982-87
• Porsche 928S 4.7L 1981-83  

Diagram Ref No 10

Constructed from high-temperature resistant materials, the exhaust valve is engineered to withstand the extreme heat, pressure and combustion by-products generated during engine operation. Working in conjunction with the valve seat, valve guide, camshaft and valvetrain assembly, it ensures the timely evacuation of exhaust gases while maintaining proper sealing of the combustion chamber.  

What This Product Does:

• Controls the release of exhaust gases from the combustion chamber.
• Opens and closes in precise timing with the engine cycle.
• Maintains combustion chamber sealing when closed.
• Supports efficient engine breathing and gas flow.
• Helps maintain engine power and performance.
• Contributes to fuel efficiency and emissions control.
• Operates as a critical component of the engine valvetrain system.

Symptoms Of Wear Or Failure:

• Engine misfires.
• Loss of engine power and performance.
• Rough idle or poor engine running.
• Reduced fuel efficiency.
• Low compression in the affected cylinder.
• Excessive exhaust smoke in some cases.
• Ticking or tapping noises from the cylinder head.
• Difficulty starting the engine.
• Engine management warning lights and fault codes.
• Failed compression or leak-down test results.

Why Replacement Matters:

• Exhaust valves operate under some of the harshest conditions within the engine, being continuously exposed to extreme temperatures, combustion pressure and corrosive exhaust gases. Over time, valves can become worn, burnt, warped, cracked or suffer sealing issues that compromise engine performance.
• A damaged exhaust valve can lead to compression loss, incomplete combustion and reduced engine efficiency. If left unresolved, valve failure can cause further damage to valve seats, pistons, cylinder heads and other internal engine components, resulting in costly repairs.
• Replacing a worn or damaged exhaust valve restores proper combustion chamber sealing, improves engine efficiency and helps maintain optimal engine performance. An OE Match replacement provides factory-style fitment, precision manufacturing and high-temperature durability, ensuring reliable operation and long-term protection for your Porsche engine.

Related reference numbers
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92810541004

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Engine Cylinder Head Inlet Valve.
The OE Match Engine Cylinder Head Inlet Valve is a high-quality replacement valvetrain component designed to regulate the flow of air and fuel into the engine's combustion chamber. Manufactured to OE specifications for fit, precision and durability, this inlet valve is essential for maintaining efficient engine breathing, combustion performance and overall engine reliability.  

Fits:

• Porsche 924S 2.5L 1986-87
• Porsche 924S 2.5L 1988
• Porsche 944 2.5L 8V 1982-87
• Porsche 944 2.7L 8V 1988-89
• Porsche 944S 2.5L 16V 1987-88
• Porsche 928S 4.7L 1981-83
• Porsche 928S2 4.7L 1984-86  

Diagram Ref No 9

Produced from high-strength, heat-resistant materials, the inlet valve is engineered to withstand constant operation and repeated opening and closing cycles. Working alongside the camshaft, valve springs, valve guides and cylinder head assembly, it ensures the precise delivery of the air-fuel mixture required for efficient combustion and optimum engine performance.  

What This Product Does:

• Controls the intake of air and fuel into the combustion chamber.
• Opens and closes in precise timing with engine operation.
• Maintains an effective seal during the compression and combustion cycles.
• Supports efficient airflow and engine breathing.
• Helps maximise engine power and responsiveness.
• Contributes to fuel efficiency and emissions control.
• Forms a critical part of the engine valvetrain system.

Symptoms Of Wear Or Failure:

• Reduced engine power and performance.
• Rough idle or uneven engine operation.
• Engine misfires.Poor throttle response.
• Increased fuel consumption.
• Low compression in the affected cylinder.
• Difficulty starting the engine.
• Ticking or tapping noises from the cylinder head.
• Engine management warning lights or fault codes.
• Failed compression or leak-down test results.

Why Replacement Matters:

• Inlet valves are subjected to continuous operation and must withstand high temperatures, combustion pressures and constant airflow. Over time, valves can become worn, bent, burnt, carbon-contaminated or develop sealing issues that reduce their effectiveness and compromise engine performance.
• A damaged inlet valve can restrict airflow into the combustion chamber, resulting in poor combustion efficiency, reduced power output and increased fuel consumption. If left unresolved, valve-related problems can contribute to compression loss and cause further damage to valve seats, cylinder heads and other internal engine components.
• Replacing a worn or damaged inlet valve restores proper airflow, improves combustion efficiency and helps maintain optimal engine performance. An OE Match replacement provides factory-style fitment, precision manufacturing and long-term durability, ensuring reliable operation and helping protect your Porsche engine from premature wear and costly repairs.

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92810540902

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