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exhaust valve Genuine Porsche part 91110541550

Code: 91110541550

Genuine Porsche part

exhaust valve

The product code 91110541550 was also found on these diagrams

103-00 - exhaust valve

cylinder head, cylinder with piston 911 UPTO 1971

103-05 - exhaust valve

cylinder head, cylinder with piston 911 1972 ONWARDS

107-20 - part 3 of 9 - exhaust valve

injection system cylinder head and injection pump 911 E/S UPTO 1971 and 911 911 T-E/E/S, CARRERA 2.7 1972 ONWARDS

103-00 - exhaust valve

Cylinder head cylinder with piston 911 1974-77

Additional information:

• This part is brand new and unused.
• Please verify that it is 100% suitable for your specific vehicle before purchase to ensure compatibility.

Before purchasing thoroughly check part to confirm compatibility.

Related products

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Engine cylinder head inlet valve. Porsche 911 1970-76

91110541120/2

Product Information

Engine Cylinder Head Inlet Valve.
The OE Match Engine Cylinder Head Inlet Valve is a high-quality replacement valvetrain component designed to control the intake of the air-fuel mixture into the engine's combustion chamber. Manufactured to OE specifications for fit, precision and durability, this inlet valve plays a vital role in engine breathing, combustion efficiency and overall performance.

Fits:

Porsche 911 1968-1973 2.2L / 2.4L / 2.7L RS LWB (F)
Porsche 911 1974-1977 2.7L / 1976-77 3.0 Carrera

Diagram Ref No 9

Constructed from premium-grade materials and precision-engineered to withstand continuous operation, the inlet valve works in conjunction with the camshaft, valve spring, valve guide and cylinder head assembly to ensure accurate timing and efficient airflow. Proper valve operation is essential for maintaining engine power, fuel efficiency and smooth running characteristics.

What This Product Does:

Controls the flow of air and fuel into the combustion chamber.
Opens and closes in precise timing with the engine cycle.
Maintains an effective seal when closed.
Supports efficient combustion and engine performance.
Helps maximise engine power output.
Contributes to fuel efficiency and emissions control.
Forms an essential part of the engine valvetrain system.

Symptoms Of Wear Or Failure:

Loss of engine power and acceleration.
Rough idle or uneven engine running.
Engine misfires.Reduced fuel efficiency.
Low compression in the affected cylinder.
Difficulty starting the engine.
Hesitation during acceleration.
Engine management warning lights or fault codes.
Ticking or tapping noises from the cylinder head.
Failed compression or leak-down test results.

Why Replacement Matters:

Inlet valves operate continuously under demanding conditions and are subjected to repeated opening and closing cycles, high temperatures and constant airflow. Over time, valves can become worn, bent, burnt, carbon-contaminated or develop sealing issues that affect engine performance and combustion efficiency.
A damaged inlet valve can reduce airflow into the combustion chamber, leading to poor combustion, reduced power, increased fuel consumption and compression loss. If left unresolved, valve failure can contribute to further damage within the cylinder head, valve seat and other internal engine components, potentially resulting in costly repairs.
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 protection for your Porsche engine.

Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.

91110541120

91110541120

911.105.411.20

1013.002

91110541100

854409-6

The product you are viewing cross references to these numbers

4 4 4 4

Engine cylinder head exhaust valve. Porsche 911 1970-77

91110541550/2

Product Information

Engine cylinder head exhaust valve. Diameter - 40mm.
This is a high-quality replacement exhaust valve manufactured to OEM specifications, used in air-cooled 911 engines.
Sold individually, 6 required per vehicle

Fits:
Porsche 911 T / E / S 2.2ltr - 1970 to 1971
Porsche 911 T / E / S 2.4ltr - 1972 to 1973
Porsche 911 / S 2.7ltr - 1974 to 1977
Porsche 911 2.7 Carrera - 1974 to 1976

Diagram Ref No 10.

The exhaust valve plays a critical role in controlling the flow of burned gases from the combustion chamber into the exhaust system. It opens and closes with precise timing, maintaining proper engine breathing, power output, and efficiency. This OE Match valve is engineered to withstand high temperatures and pressures, ensuring consistent sealing and smooth exhaust flow under demanding conditions.

Over time, exhaust valves endure extreme heat and wear that can cause pitting, burning, or warping. A worn valve can lead to compression loss, reduced performance, increased emissions, or even engine damage. Replacing it with an OE Match exhaust valve restores proper sealing, maintains cylinder compression, and ensures smooth, efficient engine operation.

Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.

91110541550

91110541500

91110541550

91110541520

The product you are viewing cross references to these numbers

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exhaust valve Genuine Porsche part 91110541550