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Dilavar Head Studs Set of 24. Porsche 911/ 964 / 993 1965-98 - 99310117054
99310117054/8X24
Vehicle Group
- Porsche 911 1965-1968 2.0L / 912 SWB (F)
- Porsche 911 1968-1973 2.2L / 2.4L / 2.7L RS LWB (F)
- Porsche 911 1974-1977 2.7L / 1976-77 3.0 Carrera
- Porsche 911 1978-1983 3.0L / SC
- Porsche 911 1984-1986 3.2L
- Porsche 911 1987-1989 3.2L G50
- Porsche 911 1975-1977 3.0L Turbo (930)
- Porsche 911 1978-1989 3.3L Turbo (930)
- Porsche 964 (911) C2 1989-93
- Porsche 964 (911) C4 1989-93
- Porsche 964 (911) RS 3.6L 1991-93
- Porsche 964 (911) RS 3.8L 1991-93
- Porsche 964 (911) TURBO 3.3L 1991-93
- Porsche 964 (911) TURBO 3.6L 1991-93
- Porsche 993 (911) C2 1994-97
- Porsche 993 (911) C4 1994-97
- Porsche 993 (911) RS 1994-97
- Porsche 993 (911) C2S 1994-97
- Porsche 993 (911) C4S 1994-97
- Porsche 993 (911) TURBO 1994-96
- Porsche 993 (911) GT2 1994-97
- Porsche 993 (911) TURBO S 1994-97
Information
Dilavar head stud set.
This complete set of 24 Dilavar cylinder head studs replaces all major head fasteners on air-cooled Porsche flat-six engines. Ideal for full rebuilds, upgrades, or resolving broken stud issues, the set provides factory-spec strength, corrosion resistance, and thermal stability. Fits 911, 964, and 993 engines (1965–98).
SET OF 24 STUDS (Original Porsche Quality)
Fits:
Porsche 911 1965 - 1989
Porsche 964 1989 - 1994
Porsche 993 1994 - 1998
Diagram Ref No 2.
Aged factory head studs can crack, corrode, or lose tension - especially after decades of heat cycling. Failure of a head stud can cause head leaks, combustion pressure loss, broken cylinders, or catastrophic engine damage. Installing new Dilavar studs ensures proper sealing, correct torque values, and long-term engine reliability.
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99310117054
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This complete set of 24 Dilavar cylinder head studs replaces all major head fasteners on air-cooled Porsche flat-six engines. Ideal for full rebuilds, upgrades, or resolving broken stud issues, the set provides factory-spec strength, corrosion resistance, and thermal stability. Fits 911, 964, and 993 engines (1965–98).
SET OF 24 STUDS (Original Porsche Quality)
Fits:
Porsche 911 1965 - 1989
Porsche 964 1989 - 1994
Porsche 993 1994 - 1998
Diagram Ref No 2.
Aged factory head studs can crack, corrode, or lose tension - especially after decades of heat cycling. Failure of a head stud can cause head leaks, combustion pressure loss, broken cylinders, or catastrophic engine damage. Installing new Dilavar studs ensures proper sealing, correct torque values, and long-term engine reliability.
Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.
99310117054
99310117053
99310117051
99310117054
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About kit
This kit is comprised of the following items:
24 x Dilavar head studs. Porsche 911 / 964 / 993 1965-98 (99310117054/8
Price: £660.00
In stock
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Information
Hexagon head bolt crankcase M8 x 120
Sold each
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Porsche 991.1 Carrera 2 / Carrera 4 3.4ltr - 2012 to 2016
Porsche 991.1 Carrera 2S / Carrera 4S 3.8ltr - 2012 to 2016
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Porsche 991.1 Carrera 2 / Carrera 4 3.4ltr - 2012 to 2016
Porsche 991.1 Carrera 2S / Carrera 4S 3.8ltr - 2012 to 2016
Porsche 992.1 3.0ltr - 2019 Onwards
Porsche 992 turbo - 2020 Onwards
Porsche 992 GT3 / GT3 RS - 2019 Onwards
Click 'Zoom in' for large parts diagram.
Diagram ref no 9
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Information
Crankcase main bolt with washer - M10 x 1,5 x 195
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6 cylinder - 14 required per car
4 cylinder - 10 required per car
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6 cylinder - 14 required per car
4 cylinder - 10 required per car
Fits:
Porsche 981 Boxster / Boxster S / Spyder - 2012 to 2016
Porsche 981 Cayman / Cayman S / GT4 - 2012 to 2016
Porsche 718 Boxster 2.0ltr / 2.5ltr / 4.0ltr - 2017 Onwards
Porsche 718 Cayman 2.0ltr / 2.5ltr / 4.0ltr - 2017 Onwards
Porsche 991 - 2012 to 2019
Porsche 992 - 2019 Onwards
Click 'Zoom in' for large parts diagram.
Diagram ref no 8
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