Cylinder head gasket. Porsche 964 / 993  ❭  96410411520

Cylinder head gasket.
OE Match cylinder head gasket (sealing ring) designed to seal the joint between the cylinder and cylinder head on air-cooled Porsche 964 and 993 engines, helping maintain proper compression and preventing leakage at the head-to-cylinder interface.
Sold each, 6 required per vehicle.

Fits:
Porsche 964 C2 / C4 / Carrera RS 1991-94
M 62M 06837 >>
M 62M 52758 >>

Porsche 964 Turbo 3.6L 1993 - 1994
Porsche 993 1995 - 1998

Diagram ref no 8

The gasket forms a critical seal at the combustion boundary where extreme heat and pressure are present. It helps keep combustion gases contained, supports stable compression, and prevents leakage that can lead to poor running, overheating, or costly engine damage.

Function:
•  Seals the cylinder-to-head interface under high temperature and pressure
•  Helps maintain compression and consistent combustion efficiency
•  Reduces risk of blow-by and hot gas leakage at the sealing surface
•  Supports long-term reliability during rebuilds or top-end refreshes

A compromised head gasket/sealing ring can cause compression loss and leakage at the head-to-cylinder joint, often showing up as poor performance, combustion leakage symptoms, and increased thermal stress. Replacing these gaskets during top-end work ensures correct sealing and protects freshly machined sealing surfaces.

When to replace:
•  During top-end rebuild, head removal, or cylinder service
•  Compression/leak-down results indicate sealing issues
•  Evidence of leakage at head-to-cylinder interface
•  Engine is apart and gaskets show wear, heat marking, or deformation
•  Preventative replacement when refreshing 964/993 top end

Related reference numbers
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96410411520

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