Engine Bolts / Studs

Crankcase stud short. Normally 1 per car



Fits:
Porsche 964 1990-94
Porsche 993 1995-98
Porsche 996 Turbo / GT3
Porsche 997 Turbo / GT3

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Diagram ref no 4

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99610117570

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Crankcase through bolt kit. SET OF 11
Porsche 911 3.6L to 3.8L engines.



Fits:
Porsche 964 3.6L
Porsche 993 3.6L

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95910117302

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Cylinder head stud BM 8 x 35. 
Sold each.



Fits:
Porsche 911 SC - 1978 to 1979

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Diagram ref no 5

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99906223702

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Cylinder head stud.
24Pc Per Engine. Price is for each.



Fits:
Porsche 993 3.6L Carrera / Carrera 4 1989-94

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Diagram ref no 11

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99310117203

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Cylinder head stud.
24Pc Per Engine. Price is for each.

Fits:
Porsche 993 3.6L Carrera / Carrera 4 1989-94

Diagram ref no 11

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99310117203

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Cylinder head studs.
Normally 24 studs per engine. Sold EACH



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

This product supersedes Porsche's old part numbers:
- 99310117051

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. 

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Diagram Ref No 2.

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99310117054

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Dilavar Head Studs.
Normally 24 studs per engine. Sold EACH



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

This product supersedes Porsche's old part numbers:
- 99310117051

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.

Click 'Zoom in' for large parts diagram.
Diagram Ref No 2.

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Related, superseded, cross reference or alternative numbers for comparison.

99310117054

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Dilavar head studs. Normally 24 studs per engine.
Sold EACH



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

This product supersedes Porsche's old part numbers:
- 99310117051

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.

Click 'Zoom in' for large parts diagram.
Diagram Ref No 2.

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99310117054

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Engine case hardware set, titanium. 

Air-cooled Porsche 911 complete engine case hardware kit in high-strength high-purity Titanium alloy. 

Includes studs:
For 911
Ti Alloy studs x 57
12 Point Ti Alloy Lock Nuts x 57

For 964/993
Ti Alloy studs x 62
12 Point Ti Alloy Lock Nuts x 62

Porsche Motorsports employed titanium alloy engine case fasteners on many of their famous race cars, including the 904, 908, 935, 962, and some modern LMP2.

Fits:
Porsche 911 3.0ltr / 3.3ltr
Porsche 964
Porsche 993

Engine case through bolt set, titanium. 

Kit Contents
Ti Alloy Studs x 11
Ti Alloy Washers x 22
Ti Alloy 12-point Nuts x 11

Porsche Motorsports employed titanium alloy engine case fasteners on many of their famous race cars, including the 904, 908, 935, 962, and some modern LMP2.

Fits:
Porsche 911
Porsche 964
Porsche 993

Air-cooled Porsche 911 engine case through bolts in high-strength high-purity Titanium alloy. Including studs, washers, and  nuts.

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SL-TB-

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Engine crankcase stud, BM 8 x 30. LEFT.
Sold each.



Fits:
Porsche 964 1989-94
Porsche 993 1995-98

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Diagram ref no 7

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99906204402

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Engine crankcase stud M8 X 78. 3 per engine. Price is for each.



Fits:
Porsche 911 1965-89 all models
Porsche 964 1989-94
Porsche 993 1995-98
Porsche 996 TURBO / GT3 1998-04
Porsche 997 TURBO / GT3 2005-12
Porsche 914 1970-76


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Diagram Ref No 6.

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90006010101

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Engine crankcase stud, BM 8 x 30. LEFT.
Sold each.



Fits:
Porsche 964 1989-94
Porsche 993 1995-98

Click 'Zoom in' for large parts diagram.
Diagram ref no 7

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99906204402

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Engine crankcase stud, BM8FO x 22. 
Sold each.



Fits:
Porsche 911 1965-89
Porsche 964 1989-94
Porsche 993 1995-98
Porsche 996 Turbo 2001-05
Porsche 996 GT3 3.6L 1999-05
Porsche 997.1 Turbo 2007-09
Porsche 997 GT3 3.6L 2006-09
Porsche 914-6 1970-76

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Diagram ref no 4

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90006010601

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Engine crankcase stud, BM8FO x 22. 
Sold each.



Fits:
Porsche 911 1965-89
Porsche 964 1989-94
Porsche 993 1995-98
Porsche 996 Turbo 2001-05
Porsche 996 GT3 3.6L 1999-05
Porsche 997.1 Turbo 2007-09
Porsche 997 GT3 3.6L 2006-09
Porsche 914-6 1970-76

Click 'Zoom in' for large parts diagram.
Diagram ref no 4

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90006010601

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Engine crankcase stud, M8 x 52. RIGHT.
Sold each.



Fits:
Porsche 911 1965-89
Porsche 964 1989-94
Porsche 993 1995-98
Porsche 996 Turbo 2001-05
Porsche 996 GT3 3.6L 1999-05
Porsche 997.1 Turbo 2007-09
Porsche 997 GT3 3.6L 2006-09
Porsche 914-6 1970-76

Click 'Zoom in' for large parts diagram.
Diagram ref no 11

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90006010201

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