Cylinder head exhaust valve kit, SET OF 6. Porsche 911 Carrera 3.0 / SC / 3.2 Carrera 1976–89  ›  93010541951

OE Match cylinder head exhaust valve kit, supplied as six exhaust valves, each with a diameter of 41.5mm.

Fits

• Porsche Carrera 3.0ltr - 1976 to 1977
• Porsche 911 SC 3.0ltr - 1978 to 1983
• Porsche 911 3.2 Carrera 1984 to 1989, comprising 1984–1986 3.2L and 1987–1989 3.2L G50 applications.
  
  

Check fitment for your specific vehicle (model, year, engine) before ordering.

Diagram ref no: 10

What This Product Does

Exhaust valves open to let combustion gases leave the cylinders, then close against their seats to seal the combustion chambers. This kit provides the six exhaust valves for the listed applications; it is not a complete cylinder head assembly.

Functions

• Controls the passage of spent gases into the exhaust system.
• Seals each combustion chamber when the exhaust valve is closed.
• Provides replacement exhaust valves for cylinder head refurbishment.
  
  

Technical Details

• Contents: six exhaust valves.
• Valve diameter: 41.5mm.
• Component reference: 93010541951.
• SC application recorded in the 1978–83 cylinder head diagram.
• 1984–86 engine references: 930.20/21/26.
• 1987–89 engine references: 930.20/25/26.
  
  

Symptoms of Fault

• Reduced or inconsistent cylinder compression.
• Leak-down testing indicating leakage past an exhaust valve.
• Persistent misfiring after ignition and fuelling checks.
• Uneven idling associated with poor valve sealing.
  
  

These symptoms require diagnosis rather than confirming valve failure on their own. Oil consumption or smoke can also involve worn guides or seals, which should be assessed separately.

Why Replacement Matters

Worn, burnt or damaged valves may no longer seal correctly. Renewing affected valves during cylinder head work addresses the valve itself, while inspection of the seats, guides and springs helps establish the full repair required. Replacing valves alone does not correct wear elsewhere in the assembly.

FAQs

Does the kit contain guides, springs or seals?
The confirmed contents are six exhaust valves. Do not assume additional cylinder head components are included.

Which checks help identify valve leakage?
Compression testing and a leak-down test help assess cylinder sealing before dismantling. Inspection and measurement then determine which components need attention.

Can this be used for a top-end repair?
It can form part of cylinder head refurbishment on the listed applications. The extent of the work depends on the fault and measured wear.