Chains & Tensioners

• Porsche Boxster 986 2.7L 2002-04
• Porsche Boxster S 986 3.2L 2002-04

• The timing chain system in these Porsche engines synchronises the crankshaft with the intermediate shaft and camshafts — ensuring correct valve timing, ignition timing and overall engine sequence.
• The chains carry the drive from the crank to intermediate shaft. Guides/rails support and tension the chain, ensure correct path and reduce slack or noise.
• Over time, chains stretch, guides wear or break, tensioners may lose preload — which can result in timing slack, chain rattle, mis-timing or even catastrophic engine damage in worst-case.
• A full kit ensures you replace all critical components — chain, guides, rails — so that the timing system is restored to proper specification and you eliminate weak points.

• A rattling or clattering noise from the front engine cover especially on start-up or at idle — often the chain has slack or the guide/rail is worn.
  
• Check engine light triggered by mis-timing, camshaft sensor errors or intermediate shaft errors.
  
• Loss of power, rough running or mis-firing — if timing has shifted due to chain stretch or guide failure, valve timing may be off.
  
• High mileage / age on the engine and you plan major service – pre-emptive replacement avoids risk of failure.
  
• Visual inspection (if cover removed) shows excessive chain slack, broken plastic guide rail, broken tensioner, or damaged rail.
• During engine work (removal of front engine cover, timing cover, etc) – if the drive system is exposed you should replace the chain kit rather than just individual items.

• Protects engine integrity — on these engines especially, a failed timing chain system can result in valve/piston contact or catastrophic failure.
  
• Restores correct timing — ensuring the timing chain, guides and rails are all new means valve timing and ignition timing will be accurate and reliable.
  
• Eliminates noise & improves reliability — replacing worn components removes chain slap noise and reduces risk of future damage.
  
• Cost-effective preventive maintenance — since the timing system requires major disassembly, doing the full kit while you’re already in there pays off rather than having to open the engine again later.

This timing chain kit includes the timing chains for the camshaft and intermediate shaft, as well as the slide and tension rails.

Due to the complex design with an intermediate shaft and two overhead camshafts, the water boxers of the modern Porsche 911 Carrera and Boxster have a variety of chains and slide rails. These vary depending on the displacement or model year, even within a series.

The chain guides were slightly changed between the 3.4L and 3.6L Carrera engines from 2001 to 2002. The engines of the 911 turbo and GT models, however, are based on the proven 911 technology from the previous models. The timing chains as well as slide rails and tensioning rails for the valve control are fundamentally different.

Fits: 

• Porsche Boxster 986 2.5L 1997-99
• Porsche Boxster 986 2.7L 1999-02
• Porsche Boxster S 986 3.2L 1999-02
• Porsche 996 C2 3.4L 1997-08/01
• Porsche 996 C4 3.4L 1997-08/01

Comprehensive Engine Timing Chain Kit for M96 Engines

Restore the integrity of your M96 engine’s timing system with this complete timing chain kit. Early-generation M96 engines are equipped with five timing chains—this kit replaces all chains along with the associated guides, tensioners, and hardware for a full system refresh.

Note: If the intake-to-exhaust camshaft timing chain tensioners require replacement, use part numbers 99610505158 and 99610505358.

Fits: 

• Porsche Boxster 986 2.7L 1999-02
• Porsche Boxster S 986 3.2L 1999-02
• Porsche 996 C2 3.4L 1997-08/01
• Porsche 996 C4 3.4L 1997-08/01

What is an Engine Timing Chain?

The timing chain is a vital component in an internal combustion engine, responsible for synchronizing the rotation of the crankshaft and camshafts. This precise coordination ensures that engine valves open and close at the correct times during each cylinder’s intake and exhaust strokes, allowing for smooth performance and efficiency.

While designed to last the lifetime of the engine, timing chains can wear, stretch, or become damaged. A worn chain can alter engine timing, strain the tensioners, and, if left unaddressed, lead to catastrophic engine damage and costly repairs. 

Signs of Timing Chain Kit Failure

Noise: A failing timing chain often produces a rattling or slapping noise, particularly noticeable at startup, idle, or during acceleration.

Reduced Performance: Stretched or worn chains can disrupt engine timing, resulting in sluggish acceleration, reduced power, or poor overall performance.

Comprehensive Engine Timing Chain Kit for PORSCHE 996 3.6L M96.03 / 997 3.6L M96.05 / 997 3.8L M97.01 / Boxster / Cayman

Restore the integrity of your M96.03 / M96.05 / M97.01 engine’s timing system with this complete timing chain kit. 

Fits: 

•       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

What is an Engine Timing Chain?

The timing chain is a vital component in an internal combustion engine, responsible for synchronizing the rotation of the crankshaft and camshafts. This precise coordination ensures that engine valves open and close at the correct times during each cylinder’s intake and exhaust strokes, allowing for smooth performance and efficiency.

While designed to last the lifetime of the engine, timing chains can wear, stretch, or become damaged. A worn chain can alter engine timing, strain the tensioners, and, if left unaddressed, lead to catastrophic engine damage and costly repairs. 

Signs of Timing Chain Kit Failure

Noise: A failing timing chain often produces a rattling or slapping noise, particularly noticeable at startup, idle, or during acceleration.

Reduced Performance: Stretched or worn chains can disrupt engine timing, resulting in sluggish acceleration, reduced power, or poor overall performance.