Engine cylinder head inlet valve. Porsche 924S / 944 / 928S / 928S2  ❭  92810540902

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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