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Head Nut Washer.
24 per engine.

Fits:
Porsche 911 1978-89

Click picture for large parts diagram.
Diagram Ref No 16.

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Head Nut Washer.
24 per engine. Price is for each.

Fits:
Porsche 911 1965-89 all models

Click picture for large parts diagram.
Diagram Ref No 17.

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Dilaver Head Studs.
Normally 24 studs per engine.

Solves the problems of loose head studs, The exhaust leak you hear in the 911 may actually be the cylinder head leaking where the studs have pulled loose. As Porsche increased displacement of the 911 engine, the different rates of thermal expansion have caused head studs to break or pull out from the engine case. These latest Dilavar steel head studs have a thermal expansion rate of approximately the same as the alloy case.

Fits:
Porsche 911 1965-89
Porsche 964 1989-94
Porsche 993 1994-98

This product supersedes Porsche's old part numbers:
- 993 101 170 51


Click picture for large parts diagram.
Diagram Ref No 2.

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Dilaver Head Studs.
SET OF 24 STUDS

Fits:
Porsche 911 1965-89
Porsche 964 1989-94
Porsche 993 1994-98

Click picture for large parts diagram.
Diagram Ref No 2.

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Engine Head Studs Standard.
24 per engine.

Fits:
Porsche 911 1970-89

Click picture for large parts diagram.
Diagram Ref No 2.

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Exhaust Head Stud (L - 36mm)
EACH

Fits
Porsche 911 2.7L / 3.0L 1974-83