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Cylinder Head / Camshaft Carrier

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DISPLAYING 1 to 16 (of 28 products)
1 2
99610418059/3.3KIT
Product Information
Product Information
Cylinder head bolt long & head gaskets Porsche 997 3.8L
Engine Cylinder Head Gasket Kit
The cylinder head gasket is a critical component that seals the cylinder head to the engine block. It serves several key functions, It seals the combustion chamber, ensuring proper compression for efficient engine performance. It prevents coolant and engine oil from mixing by sealing the fluid passages between the cylinder head and engine block.

Fits:

  • Porsche 997 MK1 Carrera 2S 3.8L 2005-08
  • Porsche 997 MK1 Carrera 4S 3.8L 2005-08 

Diagram ref no 19 & 20.

Signs of Cylinder Head Gasket Failure
A failing head gasket can lead to serious engine problems. Common symptoms include:
Engine overheating
  • Low cylinder compression
  • External coolant or oil leaks
  • White smoke from the exhaust
  • Bubbles in the radiator or coolant reservoir
  • Milky or white-colored engine oil



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Related, superseded, cross reference or alternative numbers for comparison.

99610418059
99710420103
99710420102
99610418058
99610418059
99610418053
99610418055
99610418056
99610418054
99610418057

The product you are viewing cross references to these numbers
99610418059/3KIT
Product Information
Product Information
Cylinder head bolt long. M10 x 230. (24 bolts required per engine.)
SET OF 12

oematch

Fits:
  • 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


Click 'Zoom in' for large parts diagram
Diagram ref no 20.



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Related, superseded, cross reference or alternative numbers for comparison.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
L3420
Product Information
Product Information
Cast Iron cylinder liners Porsche 997 3.8L C2S / C4S
3.8L, 99.00mm Bore, flanged liner (No cutouts).

westwood

Fits:
Porsche 997 3.8L Price is Each

Inside Diameter 99.00mm / 3.898inch
Outside Diameter 104.20mm / 4.103inch
Length 128.00mm / 4.992inch
Flange Diameter 107.40mm / 4.228inch
Flange Depth 5.00mm / 0.197inch

NEW Cast Iron cylinder liners suitable for repairing damaged Alusil bores in 997 engines.

These liners are becoming very popular, with increasing numbers of cars suffering from scoring in the bores.

The liners will need to be fitted by a professional machine shop. You will not need to get special pistons or rings, as the original spec ones can be used with these cast iron liners.
Special Order item
99610418059
Product Information
Product Information
Cylinder head bolt long. M10 x 230.
24 Bolts Per Engine. Price is for EACH.

porsche

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
99610418056
99610418057
99610418058
99610418059
523.050

The product you are viewing cross references to these numbers
99610418059/3
Product Information
Product Information
Cylinder head bolt long. M10 x 230.
24 Bolts Per Engine. Price is for EACH.

oematch

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
99610418056
99610418057
99610418058
99610418059

The product you are viewing cross references to these numbers
Special Order item
99610420300
Product Information
Product Information
Cylinder head cover gasket.

porsche

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
99610420300
492.920

The product you are viewing cross references to these numbers
Special Order item
99610420300/1
Product Information
Product Information
Cylinder head cover gasket.

elring

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
99610420300
492.920

The product you are viewing cross references to these numbers
Special Order item
99610524403
Product Information
Product Information
Cylinder head cover gasket.
porsche

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
99610524403
274.640
99610524402

The product you are viewing cross references to these numbers
Special Order item
99610421554
Product Information
Product Information
Cylinder head cover plug.
porsche

Fits:
Porsche 986 Boxster 1997-04
Porsche 987 Boxster 2005-08
Porsche 987C Cayman 2005-08
Porsche 996 C2 / C4 / C4S 1997-05
Porsche 997 Carrera 2005-08

Click 'zoom in' for large parts diagram
Diagram ref no 28.

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

99610421554
99610421554
692.290
99610421554

The product you are viewing cross references to these numbers
99610421554/1
Product Information
Product Information
Cylinder head cover plug.

elring

Fits:
Porsche 986 Boxster 1997-04
Porsche 987 Boxster 2005-08
Porsche 987C Cayman 2005-08
Porsche 996 C2 / C4 / C4S 1997-05
Porsche 997 Carrera 2005-08

Click 'zoom in' for large parts diagram
Diagram ref no 28.

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

99610421554
99610421554
692.290

The product you are viewing cross references to these numbers
Special Order item
99610421602
Product Information
Product Information
Cylinder Head Cover Plug.

porsche

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
99610421602

The product you are viewing cross references to these numbers
99610418059/4
Product Information
Product Information
Cylinder head bolt. M10 x 230.
SET OF 24 head studs, washers & nuts.

arp

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
204-4707
99610418056
99610418057
99610418058
99610418059
99610418054

The product you are viewing cross references to these numbers
L3544/48
Product Information
Product Information
Ductile Iron cylinder liners Porsche 997 3.8L C2S / C4S.
Engine 3.8L, 99.00mm Bore, Ductile Iron flanged liners (With Hole and cutouts machined).

westwood

Fits:
Porsche 997 3.8L Price SET OF 6

Inside Diameter 99.00mm / 3.898inch

NEW Ductile Iron cylinder liners suitable for repairing damaged Alusil bores in 997 engines.

These New Ductile liners now have the cutouts and gudgeon pin hole already pre machined into the liners. The liners will only need to be bored and honed after fitment.

These liners are becoming very popular, with increasing numbers of cars suffering from scoring in the bores.

The liners will need to be fitted by a professional machine shop. You will not need to get special pistons or rings, as the original spec ones can be used with these Ductile liners.
Special Order item
99710420103
Product Information
Product Information
Engine head gasket. Cylinder 1-3 or 4-6.
2 per engine. Price is for each.

porsche

Fits:
Porsche 997 C2S / C4S 2005-08 Coupe/Cabrio (M97.01)

This product supersedes Porsche's old part numbers:
- 99710420102

Click 'Zoom in' for large parts diagram.
Diagram ref no 19

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

99710420103
99710420103
99710420102

The product you are viewing cross references to these numbers
99710420103/1
Product Information
Product Information
Engine head gasket. Cylinder 1-3 or 4-6.
2 per engine. Price is for each.

elring

Fits:
Porsche 997 C2S / C4S 2005-08 Coupe/Cabrio (M97.01)

This product supersedes Porsche's old part numbers:
- 99710420102

Click 'Zoom in' for large parts diagram.
Diagram ref no 19

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

99710420103
99710420103
99710420102
017.052

The product you are viewing cross references to these numbers
197837037
Product Information
Product Information
Engine piston set for cast iron cylinder repair liners Porsche 997 3.8L set of 6 with performance rings set included.

mahlemotorsport


Fits:
Porsche 997 3.8L

Bore: 100.00mm
Stroke: 82.8mm
Rod: 141.99mm
Comp Height: 32.95mm
Pin Diam: 22mm
Weight Group: 423g



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

197837037
197837037

The product you are viewing cross references to these numbers
DISPLAYING 1 to 16 (of 28 products)
1 2
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About Cylinder Head / Camshaft Carrier

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.

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