spring seat Genuine Porsche part 61610542201

Engine Cylinder Head Exhaust Valve.
Restore dependable engine performance with this OE Match Engine Cylinder Head Exhaust Valve, manufactured as a direct replacement. Produced to OE-style specifications, this exhaust valve is designed to control the release of combustion gases from the cylinder, maintaining efficient engine operation, correct compression, and reliable valve train performance.
Fits:

• Porsche 911 1965-1968 2.0L / 912 SWB (F)
• Porsche 356A 1955-59
• Porsche 356B 1959-63
• Porsche 356C 1963-65

  
Diagram Ref No 11
Exhaust valves operate under extreme temperatures and repeated combustion cycles, making them one of the most highly stressed components within the engine. Over time, heat, carbon deposits, corrosion, or insufficient lubrication can cause the valve face, stem, or seating surface to wear or burn, leading to poor sealing and reduced engine efficiency. Replacing worn or damaged exhaust valves restores proper combustion sealing and exhaust gas flow, making this OE Match component ideal for routine maintenance, engine repairs, rebuilds, and Porsche restoration projects.  
What This Product Does:

• Controls the release of exhaust gases from the combustion chamber.
• Maintains correct cylinder sealing during the combustion cycle.
• Supports efficient engine performance and combustion.
• Helps maintain correct compression and valve timing.
• Restores proper exhaust gas flow.
• Replaces worn, burnt, or damaged original exhaust valves.
• Provides an OE-style fit and dependable quality.

Symptoms Of Wear Or Failure:

• Loss of engine power.
• Reduced engine compression.
• Rough or uneven idle.
• Engine misfires.
• Excessive valve train noise.
• Burnt, pitted, or cracked valve faces.
• Increased exhaust emissions.
• Excessive heat damage or carbon build-up on the valve.

Why Replacement Matters:

• The exhaust valve plays a critical role in allowing spent combustion gases to exit the engine while maintaining an effective seal during compression and combustion. A worn, burnt, or damaged exhaust valve can reduce engine performance, lower compression, increase fuel consumption, and eventually cause serious engine damage if left unresolved.
• Replacing the exhaust valve restores efficient exhaust gas flow, reliable cylinder sealing, and smooth engine operation while helping to protect other valve train components from unnecessary wear. Manufactured as a direct replacement and produced to OE-style specifications, this OE Match engine cylinder head exhaust valve provides the correct fit, dependable quality, and long-lasting durability, making it an ideal choice for Porsche maintenance, engine rebuilds, repairs, and restoration projects.

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

61610540650

The product you are viewing cross references to these numbers

Engine Cylinder Head Intake Valve.

Restore reliable engine performance with this OE Match Engine Cylinder Head Intake Valve, manufactured as a direct replacement. Produced to OE-style specifications, this intake valve precisely controls the flow of the air and fuel mixture into the combustion chamber, ensuring efficient combustion, smooth engine operation, and optimum performance.

Fits:

• Porsche 911 1965-1968 2.0L / 912 SWB (F)
• Porsche 356A 1955-59
• Porsche 356B 1959-63
• Porsche 356C 1963-65  

Diagram Ref No 10
Operating under constant heat, pressure, and repeated opening and closing cycles, intake valves are subject to gradual wear over time. Carbon build-up, stem wear, valve face erosion, or physical damage can prevent the valve from sealing correctly, reducing engine efficiency and performance. Replacing worn or damaged intake valves restores proper cylinder sealing and airflow, making this OE Match component an excellent choice for routine maintenance, engine repairs, rebuilds, and Porsche restoration projects.  
What This Product Does:

• Controls the intake of the air and fuel mixture into the combustion chamber.
• Maintains correct cylinder sealing during the combustion cycle.
• Supports efficient combustion and engine performance.
• Helps deliver smooth power and throttle response.
• Restores correct valve operation during engine rebuilds.
• Replaces worn, burnt, or damaged original intake valves.
• Provides an OE-style fit and dependable quality.

Symptoms Of Wear Or Failure:

• Loss of engine power.
• Rough or uneven idle.
• Reduced engine compression.
• Misfiring cylinders.
• Poor fuel economy.
• Excessive valve train noise.
• Burnt, pitted, or bent valve faces.
• Excessive oil consumption caused by valve-related wear.

Why Replacement Matters:

• The intake valve is a critical component of the engine's valve train, regulating the precise amount of air and fuel entering each cylinder while maintaining an effective seal throughout the combustion cycle. A worn, burnt, or damaged intake valve can reduce compression, lower engine performance, increase fuel consumption, and eventually lead to costly engine damage if left unresolved.
• Replacing the intake valve restores proper airflow, combustion efficiency, and reliable engine performance while helping to protect other valve train components from unnecessary wear. Manufactured as a direct replacement and produced to OE-style specifications, this OE Match engine cylinder head intake valve provides the correct fit, dependable quality, and long-lasting durability, making it an ideal choice for Porsche maintenance, engine rebuilds, repairs, and restoration projects.

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

61610540200

The product you are viewing cross references to these numbers

Engine Cylinder Head Exhaust Valve
sold each – 4 required per car

OE Match engine cylinder head exhaust valve for selected Porsche 356 1600 engines. This valve is suitable for engine repairs, cylinder head refurbishment and complete engine rebuilds.

Fits:

• 356 Cabriolet/Speedster, A 1600 616/1
• 356 Cabriolet/Speedster, A 1600 S 616.15
• 356 Cabriolet/Speedster, B 1600 Super 75 616.15
• 356 Cabriolet/Speedster, C 1600 616.15
• 356 Coupe, A 1600 Super 616.15
• 356 Coupe, B 1600 Super 75 616.15
• 356 Coupe, C 1600 616.15

Diagram ref no 11

The exhaust valve controls the flow of burnt combustion gases from the cylinder into the exhaust system. Because it operates directly in the combustion chamber, it is subjected to extremely high temperatures and repeated mechanical loading every time the engine runs.

What Does the Exhaust Valve Do?

During the engine's exhaust stroke, the exhaust valve opens to allow burnt gases to leave the combustion chamber. It then closes against the valve seat to seal the cylinder for the next combustion cycle.

Correct sealing is essential for maintaining cylinder compression, efficient combustion and smooth engine performance.

Why Do Exhaust Valves Fail?

Exhaust valves operate in a particularly demanding environment because hot combustion gases pass directly across the valve head and seat.

Over time, deterioration can result from:

• Valve face or seat wear
• Excessive heat
• Burning or pitting of the valve face
• Carbon deposits
• Valve stem or guide wear
• Incorrect valve clearances
• Poor valve seating
• Corrosion during long periods of storage

A valve that no longer seals correctly can cause loss of compression and poor engine performance.

When Should It Be Replaced?

Replacement should be considered if inspection identifies a burnt, cracked, bent, excessively worn or badly pitted valve.

Possible symptoms of valve or cylinder head problems include:

• Low cylinder compression
• Misfiring or uneven running
• Reduced engine performance
• Poor combustion
• Excessive valve train noise
• Failed compression or leak-down testing

The condition of the exhaust valves should always be assessed during a cylinder head overhaul or major engine rebuild.

Checks During Replacement

When replacing an exhaust valve, also inspect:

• Exhaust valve seat
• Valve guide
• Valve spring
• Valve collets and retainers
• Rocker arm and adjuster
• Cylinder head condition
• Remaining inlet and exhaust valves

Valve guide clearance and valve seat condition should be checked carefully before fitting a new valve.

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

61610540550

The product you are viewing cross references to these numbers

Engine Cylinder Head Inlet Valve.

The OE Match Engine Cylinder Head Inlet Valve is a precision replacement valvetrain component for the Porsche 356 B 1600 Super 90. It controls the entry of the air and fuel mixture into the combustion chamber and provides an essential sealing surface when the valve closes against its seat.

Fits:

• Porsche 356 B 1600 Super 90

Diagram Ref No 11

During the intake stroke, the valve opens to allow the combustion mixture to enter the cylinder. It then closes firmly against the valve seat so the cylinder can build and retain the compression required for efficient combustion.

Because the inlet valve operates continuously whenever the engine is running, correct valve condition, alignment and seating are essential for smooth running, good compression and consistent engine performance.
What This Product Does:

• Controls the flow of the air and fuel mixture into the combustion chamber.
• Opens during the intake stroke to allow the cylinder to fill.
• Closes against the valve seat to seal the combustion chamber.
• Helps maintain correct cylinder compression.
• Supports efficient combustion and engine performance.
• Helps maintain smooth idle and consistent power delivery.
• Works with the valve guide, valve seat, spring and associated valvetrain components.
• Replaces an inlet valve that has become burnt, bent, pitted or excessively worn.
• Helps restore correct cylinder-head operation during an engine rebuild.

For correct operation, the valve must move smoothly within its guide and contact the valve seat evenly around its circumference. Any damage that prevents full seating can allow compression to escape.
Symptoms Of Wear Or Failure:
Possible symptoms include:

• Low or uneven cylinder compression.
• Rough or unstable idle.
• Engine misfires.
• Loss of engine power.
• Poor acceleration or throttle response.
• Difficult starting.
• Increased fuel consumption.
• Uneven engine running.
• Ticking or abnormal valvetrain noise.
• Poor results during a compression test.
• Leakage through the intake system during a leak-down test.
• Pitting or erosion of the valve face.
• Carbon deposits around the valve seating area.
• Bent or damaged valve stem.
• Excessive valve-stem wear.
• Inability of the valve to seal correctly against its seat.

Low compression, rough running and poor sealing during compression or leak-down testing are recognised signs of inlet-valve problems.
Why Replacement Matters:
The inlet valve plays a direct role in both filling and sealing the cylinder. If the valve becomes worn, bent, burnt or damaged, it may no longer sit correctly against the valve seat.

Poor sealing allows compression to escape from the combustion chamber, potentially causing:

• Reduced engine power.
• Rough running and misfires.
• Poor starting.
• Uneven cylinder performance.
• Reduced combustion efficiency.
• Increased fuel consumption.
• Further wear to the valve and valve seat.

Replacing a defective valve helps restore the correct combustion-chamber seal, cylinder compression and intake flow.

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

61610540100

The product you are viewing cross references to these numbers

Engine cylinder head inlet valve.
Fits:
Porsche 356 B 1600 Super 90
Click 'Zoom in' for large parts diagram.
Diagram Ref No 11

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

61610540100

The product you are viewing cross references to these numbers

Valve spring. Porsche 912 / 356
Fits:
Porsche 912 1965-69
Porsche 356 B / C 1960-65
Click 'Zoom in' for large parts diagram.
Diagram ref no 14

Related reference numbers
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61610543203

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