Gaskets & Sets

Cylinder head bolt long & head gaskets Porsche 996 3.6L / Cayman 3.4L

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.

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

Fits:

• 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 Cayman S 3.4L 987C 2005-08  
• Porsche Boxster 987 S 3.4L 2005-08/08
• Porsche Boxster S 987 MKII 3.4L 2009-2012
• Porsche Boxster 981 S / GTS 3.4L 2012-16  

Click 'Zoom in' for large parts diagram
Diagram ref no 19 & 20.

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Related, superseded, cross reference or alternative numbers for comparison.

99610418059

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Engine Cam Cover Gasket & Bolt Kit
This kit includes both engine cam cover gaskets and the correct replacement bolts providing a complete solution for resealing your engine’s cam covers. Designed to OEM specifications, the gaskets prevent oil leaks, while the fresh hardware ensures a secure and lasting seal. Replacing both gaskets and bolts together avoids repeat labour and guarantees long-term reliability.

Fits:
Porsche Boxster 987 MKII 2.9L 2009-2012
Porsche Boxster S 987 MKII 3.4L 2009-2012
Porsche Boxster 981 2.7L 2012-16
Porsche Boxster S / GTS 981 3.4L 2012-16
Porsche Boxster Spyder 3.8L 2016
Porsche 997 MKII Carrera C2 3.6L 2009-12
Porsche 997 MKII Carrera C4 3.6L 2009-12
Porsche 997 MKII Carrera C2S 3.8L 2009-12
Porsche 997 MKII Carrera C4S 3.8L 2009-12
Porsche 997 MKII Turbo 2010-13
Porsche 991 Carrera C2 3.4L (350Bhp)
Porsche 991 Carrera C2S 3.8L (400Bhp)
Porsche 991 Carrera C4 3.4L (350Bhp)
Porsche 991 Carrera C4S 3.8L (400Bhp)
Porsche 991 Turbo 3.8L (520bhp)
Porsche 991 Turbo S 3.8L (560Bhp)
Porsche Cayman 2.9L 987C MKII 2009-12
Porsche Cayman S / R 3.4L 987C MKII 2009-12
Porsche Cayman 2.7L 981 2013-16
Porsche Cayman S / GTS 3.4L 981 2013-16
Porsche Cayman GT4 3.8L 2015-16

What the Products Do

• Cam Cover Gaskets: Seal the camshaft/valve covers to the cylinder head, preventing engine oil leaks and keeping contaminants out.
• Bolts: Maintain correct torque and clamping pressure on the covers, ensuring the gaskets stay sealed under heat and vibration.

Together, they protect your engine from oil leaks, maintain lubrication, and preserve long-term engine health.

Symptoms of Failure

• Visible oil leaks around the cam/valve cover area
• Burning oil smell from oil dripping onto exhaust components
• Oil spots under the car after parking
• Low oil levels or frequent top-ups
• Rough running or misfires caused by oil leaking into spark plug wells

Common Reasons for Failure

• Age & Heat: Gaskets harden and lose flexibility after years of heat cycling.
• Oil Exposure: Continuous contact with hot oil degrades gasket material.
• Bolt Stretch or Loosening: Original bolts lose clamping force over time, allowing leaks.
• Improper Previous Repair: Reusing old bolts or over-tightening can warp covers and damage seals.

Why Replace as a Kit?

• Ensures complete resealing of both cam covers in one service.
• New bolts guarantee proper torque and sealing pressure.
• Prevents oil leaks that can cause engine bay mess, smoke, or fire hazards.
• Protects against premature engine wear from low oil levels.
• Saves on labour by replacing all related components at once.

Ideal For: Routine maintenance, leak repair, or as a preventive upgrade during top-end engine service.

Diagram ref no 8 and 9 

Related reference numbers
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VALVECVRKIT981

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Engine Cam Cover Gasket & Bolt Kit
This OE Match engine cam cover gasket and bolt kit is a complete resealing kit for Porsche 997.2, 991.1, 981 Boxster, and 981 Cayman models. The kit includes OE Match cam cover gaskets and OE Genuine Porsche bolts, giving a complete solution for resealing the engine cam covers with high-quality replacement sealing components and original Porsche fixing hardware.

Fits:
Porsche 987.2 Boxster 2.9L 2009 - 2012
Porsche 987.2 Boxster S  3.4L 2009 - 2012
Porsche 981 Boxster 2.7L 2012 - 2016
Porsche 981 Boxster S / GTS 3.4L 2012 - 2016
Porsche 981 Boxster Spyder 3.8L 2016
Porsche 997.2 Carrera C2 / C4 3.6L 2009 - 2012
Porsche 997.2 Carrera C2S / C2S 3.8L 2009 - 2012
Porsche 997.2 Turbo 2010 - 2013
Porsche 991.1 Carrera C2 / C4 3.4L 2012 - 2016
Porsche 991.1 Carrera C2S / C4S 3.8L 2012 - 2016
Porsche 991 Turbo / Turbo S 3.8L 2014 -2016
Porsche 987C.2 Cayman 2.9L 2009- 2012
Porsche 987C.2 Cayman S / R 3.4L 2009 - 2012
Porsche 981 Cayman 2.7L 2013 - 2016
Porsche 981 Cayman S / GTS 3.4L 2013 - 2016
Porsche 981 Cayman GT4 3.8L 2015 - 2016

Diagram ref no 8 and 9 

Kit Contents
 1 x OE Match engine cam cover gasket, cyl. 1-3 (OE ref number 9A110573103)
 1 x OE Match engine cam cover gasket, cyl. 4-6 (OE ref number 9A110573203)
40 x OE Genuine Porsche cam cover bolts, 9A110731301

The cam cover gaskets seal the joint between the cam covers and the cylinder heads, helping prevent engine oil leaks and keeping contaminants out of the valve train area. The replacement bolts provide the correct clamping force required to hold the cam covers securely in place and maintain an even seal under heat, vibration, and normal engine movement.

Functions
• Reseals both engine cam covers
• Helps prevent oil leaks from the cam cover / valve cover area
• Supports correct sealing between the cam cover and cylinder head
• Helps keep oil inside the engine and contaminants out
• Includes fresh OE Genuine Porsche bolts for secure installation
• Helps maintain correct clamping pressure on the gaskets
•  OE Match gasket solution with genuine Porsche fixing hardware

Cam cover gaskets are exposed to constant heat cycling, engine oil, vibration, and age-related wear. Over time, the gaskets can harden, flatten, crack, or lose sealing ability, which may lead to oil leaks around the cam cover area. Old bolts can also lose clamping performance or become unsuitable for reuse after removal. Replacing both gaskets and bolts together helps restore a reliable seal and reduces the risk of repeat labour.

When to Replace:
•  Oil leaks are visible around the cam cover / valve cover area
•  There is a burning oil smell from oil contacting hot exhaust components
•  Oil drips or residue are found under the engine
•  The cam covers have been removed during engine service
•  The original gaskets have hardened, flattened, or failed
•  The original bolts are corroded, stretched, damaged, or previously removed
•  The engine is undergoing top-end service, leak repair, or preventative maintenance.

Where it fits on the car
This kit fits on the engine cam cover / valve cover areas. One gasket is used for each side of the engine, with the included bolts securing the cam covers to the cylinder heads according to the factory tightening sequence and torque specification.

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VALVECVRKIT981.OEM

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Engine Re-Build / Over Haul Kit Porsche Boxster 2.5L 986 Engine Type M96.20

This is a basic overhaul engine rebuild kit to refresh the engine from leaks.

You may also need to replace some damaged components within the engine like the tensioners, timing chains, pistons or liners these can be purchased separately

Includes:
14 x MAIN BEARING 2.5L ENGINE M96.20
12 X CONNECTING ROD BEARING "BIG END SHELL"
6 X CONNECTING ROD BEARING "SMALL END SHELL"
2 X THRUST WASHER
6 X PISTON RING SET 986 2.5L M96.20
1 X HEAD GASKET - 1-3 CYL 2.5/2.7CC >2002 M96.20/22
1 X HEAD GASKET - 4-6 CYL 2.5/2.7CC >2002 M96.20/22
1 X ENGINE GASKET SET "VICTOR REINZ"
6 X SPLASH VALVE
2 X TIMING CHAIN GUIDE
2 X TENSIONER BLADE

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ENGINEKIT04

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