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Cylinder Head / Camshaft Carrier
- 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
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
This kit is comprised of the following items:
- 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
24 Bolts Per Engine. Price is for EACH.

Fits:
Porsche 986 Boxster 2.7L / S 3.4L 2003-04
Porsche 987 Boxster 2005-08
Porsche 987C Cayman 2005-08
Porsche 996 C2 / C4 / C4S 2002-05
Porsche 997 Carrera 2005-08
Click 'Zoom in' for large parts diagram
Diagram ref no 20.
Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.
99610418059
The product you are viewing cross references to these numbers
- 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
Cylinder head bolts are essential structural fasteners used in modern engines to clamp the cylinder head, head gasket and engine block together. The OE Match bolt is the long version used in Porsche M96 and M97 engines found in various Boxster, Cayman and 911 models.
Sold individually, 24 bolts required per engine.
Fits:
Porsche 986 Boxster 2.7L / S 3.4L 2003 - 2004
Porsche 987.1 Boxster 2005 - 2008
Porsche 987C.1 Cayman 2005 - 5008
Porsche 996 C2 / C4 / C4S 2002 - 2005
Porsche 997.1 Carrera 2005 - 2008
Diagram ref no 20.
The cylinder head bolt applies the precise clamping force needed to hold the cylinder head against the engine block while compressing the head gasket. This ensures a sealed combustion chamber and prevents coolant or oil leakage. Correctly functioning head bolts are critical to maintaining engine compression, cooling efficiency and overall engine reliability.
Function
• Engine Assembly Fastening: Secures the cylinder head to the engine block
• Compression Seal: Maintains correct sealing of the head gasket
• Thermal Stability: Withstands engine heat cycles and mechanical stress
• Engine Integrity: Ensures proper combustion chamber sealing and pressure control
Cylinder head bolts experience extreme stress from combustion pressure, temperature changes and engine vibration. Over time or after repeated tightening cycles, bolts can stretch or lose their clamping strength. Replacing them during engine repairs helps maintain the correct seal between the head and block, preventing coolant leaks, compression loss or engine overheating.
Consider replacing cylinder head bolts when:
• Rebuilding or repairing the engine
• Replacing the head gasket
• Engine overheating or compression loss occurs
• The original bolts have been previously torqued or stretched
Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.
99610418059
The product you are viewing cross references to these numbers
- 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 3.6L 09/01-2005
- Porsche 996 C4 3.6L 09/01-2005
- Porsche 996 C4S 3.6L 09/01-2005
- 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

Fits:
Porsche 987 Boxster 2005-08
Porsche 987C Cayman 2005-08
Porsche 996 C2 / C4 / C4S 2002-05
Porsche 997 Carrera 2005-08
Click 'zoom in' for large parts diagram
Diagram ref no 27.
Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.
99610420300
The product you are viewing cross references to these numbers
- 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 3.6L 09/01-2005
- Porsche 996 C4 3.6L 09/01-2005
- Porsche 996 C4S 3.6L 09/01-2005
- 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

Fits:
Porsche 987 Boxster 2005-08
Porsche 987C Cayman 2005-08
Porsche 996 C2 / C4 / C4S 2002-05
Porsche 997 Carrera 2005-08
Click 'zoom in' for large parts diagram
Diagram ref no 27.
Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.
99610420300
The product you are viewing cross references to these numbers
- 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 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

Fits:
Porsche 986 Boxster 2.7L / S 3.4L 2003-04
Porsche 987 Boxster 2005-08
Porsche 987C Cayman 2005-08
Porsche 996 C2 / C4 / C4S 2002-05
Porsche 997 Carrera 2005-08
Click 'zoom in' for large parts diagram
Diagram ref no 41.
Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.
99610524403
The product you are viewing cross references to these numbers
- 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 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
Fits:
Porsche 986 Boxster 2.7L / S 3.4L 2003-04
Porsche 987 Boxster 2005-08
Porsche 987C Cayman 2005-08
Porsche 996 C2 / C4 / C4S 2002-05
Porsche 997 Carrera 2005-08
Click 'zoom in' for large parts diagram
Diagram ref no 41.
Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.
99610524403
The product you are viewing cross references to these numbers
- 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 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
Fits:
Porsche 986 Boxster 1997 - 2004
Porsche 987 Boxster 2005 - 2008
Porsche 987C Cayman 2005 - 2008
Porsche 996 C2 / C4 / C4S 1997 - 2005
Porsche 997 Carrera 2005 - 2008
Diagram ref no 28.
Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.
99610421555
The product you are viewing cross references to these numbers
- 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 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
Fits:
Porsche 986 Boxster 1997 - 2004
Porsche 987 Boxster 2005 - 2008
Porsche 987C Cayman 2005 - 2008
Porsche 996 C2 / C4 / C4S 1997 - 2005
Porsche 997 Carrera 2005 - 2008
Diagram ref no 28.
Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.
99610421555
The product you are viewing cross references to these numbers
- 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 3.6L 09/01-2005
- Porsche 996 C4 3.6L 09/01-2005
- Porsche 996 C4S 3.6L 09/01-2005
- 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
Fits:
Porsche 986 Boxster 2.7L / 3.2L 2003-04
Porsche 987 Boxster 2005-08
Porsche 987C Cayman 2005-08
Porsche 996 C2 / C4 / C4S 2002-05
Porsche 997 Carrera 2005-08
Click 'zoom in' for large parts diagram
Diagram ref no 29.
Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.
99610421602
The product you are viewing cross references to these numbers
- 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
SET OF 24 head studs, washers & nuts.

Fits:
Porsche 986 Boxster 2.7L / S 3.4L 2003-04
Porsche 987 Boxster 2005-08
Porsche 987C Cayman 2005-08
Porsche 996 C2 / C4 / C4S 2002-05
Porsche 997 Carrera 2005-08
Click 'Zoom in' for large parts diagram
Diagram ref no 20.
Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.
99610418059
The product you are viewing cross references to these numbers
- Porsche Boxster S 986 3.2L 2003-04
- Porsche Boxster 987 S 3.2/3.4L 2005-08/08
2 per engine.

Fits:
Porsche 986 Boxster 3.2L 2003-04 (M96.24)
Porsche 987 Boxster 3.2L 2005-06 (M96.26)
This product supersedes Porsche's old part numbers:
- 99610417058
Click 'zoom in' for large parts diagram.
Diagram ref no 22.
Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.
99610417060
The product you are viewing cross references to these numbers
- Porsche Boxster S 986 3.2L 2003-04
- Porsche Boxster 987 S 3.2/3.4L 2005-08/08
2 per engine.

Fits:
Porsche 986 Boxster 3.2L 2003-04 (M96.24)
Porsche 987 Boxster 3.2L 2005-06 (M96.26)
This product supersedes Porsche's old part numbers:
- 99610417058
Click 'zoom in' for large parts diagram.
Diagram ref no 22.
Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.
99610417060
The product you are viewing cross references to these numbers
- 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 TURBO 2000-05
- 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

With more and more broken exhaust bolts reported on the water-cooled engines, the headache of repairing a broken bolt is becoming epidemic. Tasks ranging from a simple exhaust system update through an engine removal, are consistently plagued by snapped, rusted, and broken exhaust manifold bolts. Rarely can an accurate removal of the broken bolt be performed with the engine in the car, and even after removal, the task is time consuming and if not done carefully can lead to a damaged head or faulty repair. STOMSKI RACING's answer to these problems is the SR067, a kit that easily, accurately, and flexibly allows you to drill out the broken bolts - with the engine still in the car- saving time and headaches. A CNC milled plate indexes precisely off the broken bolts and/or bolt holes. Using our uniquely designed Thumb Screws, the SR067 plate is locked in place (by threading a Thumb Screw over a broken bolt or by using a supplied bolt threaded through the SR067 Thumb Screw). With the included pilot drills and drill guides, the faulty bolt can be drilled out, producing a perfectly perpendicular and centered hole that if necessary can be chased with an included M8x1.25 tap.
Kit includes : anodized aluminum fixture, drill bits, tap with extension, drill jigs/guides, Thumb Screws, and hardware in a sturdy storage case.
Now also includes our SR065D drill guide.
- 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 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 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 TURBO 2000-05
- 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 997 MK1 TURBO 2007-09
- Porsche 997 MK1 GT3 2007-09
- Porsche 997 MK1 GT2 2007-09
- Porsche 958 Cayenne V6 3.6L Petrol (300Hp) 2010-17
- Porsche 958 Cayenne V6 3.0L Diesel (245Hp) 2010-17
- Porsche 958 Cayenne S V6 3.0L Hybrid (380Hp) 2010-17
- Porsche 958 Cayenne S V8 4.8L Petrol (400Hp) 2010-17
- Porsche 958 Cayenne S V8 4.2L Diesel (382Hp) 2010-17
- Porsche 958 Cayenne GTS V8 4.8L Petrol (400Hp) 2010-17
- Porsche 958 Cayenne Turbo V8 4.8L Petrol (500Hp) 2010-17
- Porsche 958 Cayenne Turbo S V8 4.8L Petrol (550Hp) 2010-17
- Porsche 970.1 Panamera V6 3.6L 2WD 2009-13
- Porsche 970.1 Panamera 4 V6 3.6L 4WD 2009-13
- Porsche 970.1 Panamera S V8 4.8L 2009-13
- Porsche 970.1 Panamera 4S V8 4.8L 2009-13
- Porsche 970.1 Panamera GTS V8 4.8L 2011-13
- Porsche 970.1 Panamera Turbo V8 4.8L 2009-13
- Porsche 970.1 Panamera Turbo S V8 4.8L 2009-13
- Porsche 970.1 Panamera Diesel V6 3.0L 2011-13
- Porsche 970.1 Panamera S Hybrid V6 3.0L 2011-13
- Porsche 970.2 Panamera V6 3.6L 2WD (310Hp) 2014-16
- Porsche 970.2 Panamera 4 V6 3.6L 4WD (310Hp) 2014-16
- Porsche 970.2 Panamera S V6 Turbo 3.0L 2WD (420Hp) 2014-16
- Porsche 970.2 Panamera S V6 Turbo 3.0L 2WD Executive 2014-16
- Porsche 970.2 Panamera 4S V6 Turbo 3.0L 4WD (420Hp) 2014-16
- Porsche 970.2 Panamera 4S V6 Turbo 3.0L 4WD Executive 2014-16
- Porsche 970.2 Panamera GTS V8 4.8L 4WD (440Hp) 2014-16
- Porsche 970.2 Panamera Turbo V8 4.8L (520Hp) 2014-16
- Porsche 970.2 Panamera Turbo V8 Executive 2014-16
- Porsche 970.2 Panamera Turbo S V8 4.8L 2014-16
- Porsche 970.2 Panamera Diesel V6 3.0L (250Hp) 2014-16
- Porsche 970.2 Panamera S E-Hybrid V6 3.0L (416Hp) 2014-16

Fits:
Porsche 911 - 1978 to 1989
Porsche 964 - 1989 to 1994
Porsche 996 - 1998 to 2005
Porsche 997.1 - 2005 to 2008
Porsche 986 Boxster - 1997 to 2004
Porsche 928 - 1978 to 1995
Porsche 958 Cayenne - 2011 to 2018
Porsche 970 Panamera - 2010 to 2016
Porsche 95B Macan - 2014 to 2018
Aluminium seal washer - has various applications depending on model
Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.
90012314430
The product you are viewing cross references to these numbers
- 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 3.6L 09/01-2005
- Porsche 996 C4 3.6L 09/01-2005
- Porsche 996 C4S 3.6L 09/01-2005
- 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

Fits:
Porsche 986 Boxster 2.7L / 3.2L 2002-04
Porsche 987.1 Boxster 2.7L / 3.2L / 3.4L 2005-08
Porsche 987C.1 Cayman 2.7L / 3.4L 2005-08
Porsche 996 Carrera 3.6L 2001-05
Porsche 997.1 Carrera 3.6 / 3.8L 2004-08
Click 'Zoom in' for large parts diagram.
Diagram ref no 33
Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.
99970176141
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Precision Cylinder Head & Camshaft Covers – Engine Protection and Performance for Porsche Models
The cylinder head and camshaft covers play a vital role in protecting key engine components such as the valvetrain, camshafts, and cylinder head from dirt, debris, and oil contamination. Beyond protection, they ensure proper oil sealing and ventilation — maintaining consistent lubrication and pressure balance within the engine.
At Design911, we offer a wide selection of precision-engineered cylinder head and camshaft covers for both classic and modern Porsche engines. Crafted from high-grade aluminium, magnesium, and composite materials, these covers provide a perfect fit and long-lasting reliability while maintaining the clean, professional look expected from Porsche’s performance heritage.
Whether you’re restoring an air-cooled 911 or servicing a high-output 992, our manufacturer-quality components ensure leak-free operation and exceptional durability.
What Do Cylinder Head and Camshaft Covers Do?
These components serve as the protective shell for your engine’s valvetrain and upper oil channels. They keep contaminants out, manage internal pressure, and help maintain consistent lubrication.
Core Functions:
- Seal the upper engine area, preventing oil leaks and contamination.
- Protect the camshafts and valve train from debris and moisture.
- Regulate crankcase ventilation, supporting optimal engine breathing.
- Maintain correct oil flow for cooling and lubrication efficiency.
They are essential not only for reliability but also for maintaining the visual and mechanical integrity of your Porsche’s engine bay.
Why Do Cylinder Head / Camshaft Covers Fail?
Over time, heat, pressure, and oil exposure can degrade materials, seals, and gaskets. These issues can lead to leaks, poor ventilation, and even oil starvation in extreme cases.
Common Causes of Failure Include:
- Cracked or warped covers from repeated heat cycles.
- Degraded seals or gaskets, causing oil leaks.
- Loose or fatigued fasteners, leading to uneven sealing pressure.
- Blocked breather passages, increasing internal pressure.
- Corrosion or contamination in older engines.
Replacing worn covers and seals restores oil control, prevents leaks, and preserves long-term engine health.
Why Replace with Precision-Engineered Covers?
Upgrading or replacing your covers ensures your Porsche engine operates as intended — leak-free, properly ventilated, and visually clean.
Key Benefits:
- Restores sealing performance and eliminates oil leaks.
- Protects vital valvetrain components from dirt and debris.
- Maintains proper crankcase pressure and oil control.
- Crafted from premium materials for superior heat and corrosion resistance.
- Perfect fitment and finish, ensuring long-term reliability.
- Compatible with a wide range of Porsche models, from classics to modern GT cars.
Precision covers also contribute to the engine’s aesthetic, maintaining the refined look Porsche owners expect.
Highlights:
- High-strength cylinder head and camshaft covers for Porsche engines.
- Precision-machined sealing surfaces for long-term oil-tight performance.
- Manufacturer-quality materials – aluminium, magnesium, and composite options.
- Improved oil control and internal ventilation. Ideal for engine rebuilds, upgrades, or restorations.
- Compatible with air-cooled and water-cooled Porsche models.