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Cylinder head bolt long, Set of 12. Porsche Boxster / Cayman / 996 / 997 - 99610418059
99610418059/3KIT
Vehicle Group
- Porsche Boxster 986 2.5L 1997-99
- Porsche Boxster 986 2.7L 1999-02
- Porsche Boxster S 986 3.2L 1999-02
- Porsche Boxster 986 2.7L 2003-04
- Porsche Boxster S 986 3.2L 2003-04
- Porsche Boxster 987 2.7L 2005-08/08
- Porsche Boxster 987 S 3.2/3.4L 2005-08/08
- Porsche 996 C2 3.4L 1997-08/01
- Porsche 996 C4 3.4L 1997-08/01
- Porsche 996 C2 3.6L 09/01-2005
- Porsche 996 C4 3.6L 09/01-2005
- Porsche 996 C4S 3.6L 09/01-2005
- Porsche 996 GT2 2001-05
- Porsche 996 GT3 MKI 1999-02
- Porsche 996 GT3 MKII 2003>>
- Porsche 996 GT3 RS 2003-04
- Porsche 997 MK1 Carrera 2 3.6L 2005-08
- Porsche 997 MK1 Carrera 2S 3.8L 2005-08
- Porsche 997 MK1 Carrera 4 3.6L 2005-08
- Porsche 997 MK1 Carrera 4S 3.8L 2005-08
- Porsche Cayman 2.7L 987C 2006-08
- Porsche Cayman S 3.4L 987C 2005-08
Information
Cylinder head bolt long. M10 x 230
Cylinder head bolts are high-strength engine fasteners that clamp the cylinder head, head gasket and engine block together. The OE Match set contains 12 long bolts, which is the correct quantity required for one cylinder head in Porsche M96 and M97 engines
SET OF 12 is required per cylinder head (two sets per engine)
Fits:
Porsche 986 Boxster 2.7L / S 3.4L 2003 - 2004
Porsche 987.1 Boxster 2005 - 2008
Porsche 987C.1 Cayman 2005 - 2008
Porsche 996 C2 / C4 / C4S 2002 - 2005
Porsche 997.1 Carrera 2005 - 2008
Diagram ref no 20.
These bolts are engineered to withstand extreme engine conditions such as high combustion pressure, temperature fluctuations and constant mechanical stress. OE Match bolts are produced to match the original Porsche specifications to ensure correct torque application and reliable engine assembly.
The cylinder head bolts apply precise clamping force between the cylinder head and engine block. This pressure compresses the head gasket, creating a tight seal that prevents coolant or oil leakage while maintaining proper compression inside the combustion chambers.
Replacing the bolts during engine service helps maintain the integrity of the engine assembly and ensures reliable performance.
Function
• Engine Fastening: Secures the cylinder head to the engine block
• Gasket Compression: Maintains the seal of the head gasket
• Combustion Stability: Preserves compression inside the cylinders
• Structural Strength: Designed to withstand heat, pressure and engine vibration
Cylinder head bolts are subjected to extreme pressure and thermal expansion during engine operation. Many modern bolts are torque-to-yield fasteners, meaning they stretch slightly during installation and should be replaced once removed. Using new bolts during engine repairs ensures correct clamping force and prevents potential head gasket failure, oil leaks or overheating issues.
Consider replacing cylinder head bolts when:
• Replacing the cylinder head gasket
• Performing a top-end engine rebuild
• Removing or reinstalling the cylinder head
• High-mileage engine maintenance
Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.
99610418059
The product you are viewing cross references to these numbers
Cylinder head bolts are high-strength engine fasteners that clamp the cylinder head, head gasket and engine block together. The OE Match set contains 12 long bolts, which is the correct quantity required for one cylinder head in Porsche M96 and M97 engines
SET OF 12 is required per cylinder head (two sets per engine)
Fits:
Porsche 986 Boxster 2.7L / S 3.4L 2003 - 2004
Porsche 987.1 Boxster 2005 - 2008
Porsche 987C.1 Cayman 2005 - 2008
Porsche 996 C2 / C4 / C4S 2002 - 2005
Porsche 997.1 Carrera 2005 - 2008
Diagram ref no 20.
These bolts are engineered to withstand extreme engine conditions such as high combustion pressure, temperature fluctuations and constant mechanical stress. OE Match bolts are produced to match the original Porsche specifications to ensure correct torque application and reliable engine assembly.
The cylinder head bolts apply precise clamping force between the cylinder head and engine block. This pressure compresses the head gasket, creating a tight seal that prevents coolant or oil leakage while maintaining proper compression inside the combustion chambers.
Replacing the bolts during engine service helps maintain the integrity of the engine assembly and ensures reliable performance.
Function
• Engine Fastening: Secures the cylinder head to the engine block
• Gasket Compression: Maintains the seal of the head gasket
• Combustion Stability: Preserves compression inside the cylinders
• Structural Strength: Designed to withstand heat, pressure and engine vibration
Cylinder head bolts are subjected to extreme pressure and thermal expansion during engine operation. Many modern bolts are torque-to-yield fasteners, meaning they stretch slightly during installation and should be replaced once removed. Using new bolts during engine repairs ensures correct clamping force and prevents potential head gasket failure, oil leaks or overheating issues.
Consider replacing cylinder head bolts when:
• Replacing the cylinder head gasket
• Performing a top-end engine rebuild
• Removing or reinstalling the cylinder head
• High-mileage engine maintenance
Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.
99610418059
99610418056
99610418057
99610418058
99610418059
The product you are viewing cross references to these numbers
About kit
This kit is comprised of the following items:
12 x Cylinder head bolt long. Porsche Boxster / Cayman / 996 / 997 (99610418059/3
Price: €83.52
In stock
Related products
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 studs.
Dilavar engine head studs are specialized fasteners used in the engines of certain Porsche models, especially air-cooled engines (like the 911). They are made from a proprietary alloy called Dilavar, which is designed to address specific thermal expansion and durability challenges in high-performance engines.
Price is each. Normally 24 studs per engine.
Fits:
Porsche 911 1965 - 1989
Porsche 964 1989 - 1994
Porsche 993 1994 - 1998
Diagram Ref No 2.
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.
Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.
99310117054
The product you are viewing cross references to these numbers
Dilavar engine head studs are specialized fasteners used in the engines of certain Porsche models, especially air-cooled engines (like the 911). They are made from a proprietary alloy called Dilavar, which is designed to address specific thermal expansion and durability challenges in high-performance engines.
Price is each. Normally 24 studs per engine.
Fits:
Porsche 911 1965 - 1989
Porsche 964 1989 - 1994
Porsche 993 1994 - 1998
Diagram Ref No 2.
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.
Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.
99310117054
99310117051
99310117053
99310117054
The product you are viewing cross references to these numbers
Price: €32.18
In stock
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
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.
Click 'Zoom in' for large parts diagram.
Diagram Ref No 2.
Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.
99310117054
The product you are viewing cross references to these numbers
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.
Click 'Zoom in' for large parts diagram.
Diagram Ref No 2.
Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.
99310117054
99310117051
99310117053
99310117054
The product you are viewing cross references to these numbers
Price: €21.94
In stock
Vehicle Group
- 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
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
Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.
99906204402
The product you are viewing cross references to these numbers
Sold each.
Fits:
Porsche 964 1989-94
Porsche 993 1995-98
Click 'Zoom in' for large parts diagram.
Diagram ref no 7
Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.
99906204402
99906204402
99906108302
99906105501
The product you are viewing cross references to these numbers
Price: €3.10
Arriving soon