Chains & Tensioners

Actuator Camshaft. Porsche 996 / 986 / 997 / 987 / 987C



Fits:
Porsche 996 C2 / C4 / C4S 2002>>
Porsche 986 Boxster 2.7L / 3.2L 1997-04
Porsche 987 Boxster 2005-08
Porsche 987C Cayman 2005-08
Porsche 997 2005-08
Porsche Carrera Gt 2004-06


This product supersedes Porsche's old part numbers:
- 99610530302
- 99610530303
- 99610530304
- 99610530305


Click 'Zoom in' for large parts diagram.
Diagram Ref No 41

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99610530307

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Actuator Camshaft. A solenoid component for the Variable Camshaft Timing (VarioCam Plus) system, used to adjust camshaft timing for optimal performance. Serves the front (intake/exhaust timing) of the VarioCam system, typically requiring two units per engine (one per bank)

Common issues or symptoms: 

Rough idle / misfires: Faulty actuator disrupts precise valve timing, leading to uneven idling or misfires 

Reduced engine performance: Loss of power or hesitation at certain RPMs can be linked to improper camshaft adjustment Check Engine Light (CEL), often triggered when the engine control unit (ECU) detects misalignment or malfunction in camshaft timing — very common with actuator failure 



Fits:
Porsche 996 C2 / C4 / C4S - 2002 to 2005
Porsche 986 Boxster 2.7ltr / 3.2ltr - 1997 to 2004
Porsche 987 Boxster - 2005 to 2008
Porsche 987C Cayman - 2005 to 2008
Porsche 997 - 2005 to 2008
Porsche Carrera Gt - 2004 to 2006

Faulty actuator disrupts precise valve timing, leading to uneven idling or misfires Diagnostic Trouble Codes (DTCs): Codes like P0010, P0011, P0012, P0013, P0014 often point to camshaft actuator or timing issues. They indicate conditions such as stuck timing advance/retard, or electrical faults in the actuator circuit Failure Causes: Oil contamination or sludge can clog the actuator, impairing function. Electrical problems such as wiring degradation or poor connector contact can impede correct activation 

Diagnostic & repair advice check oil quality and change intervals — fresh, clean oil helps prevent buildup that hampers actuator performance scan for and interpret fault codes using an OBD-II scanner to pinpoint actuator failure or control circuit issues Inspect connectors and wiring for corrosion or looseness Replace defective solenoid(s) with OEM or high-quality equivalents if internal stick or mechanical failure is suspected. 

This product supersedes Porsche's old part numbers:
- 99610530302
- 99610530303
- 99610530304
- 99610530305
- 99610530306

- 99610530307

Click 'Zoom in' for large parts diagram.
Diagram Ref No 41

Related reference numbers
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99610530307

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Actuator valve.



Fits:
Porsche 996 Carrera 2 - 2002 onwards
Porsche 996 Carrera 4 - 2002 onwards
Porsche 996 Carrera 4S - 2002 onwards
For engine code M96.03

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Diagram Ref No 40

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99610530105

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Bolt for chain tensioner blade. Fits left or right side. Sold each.



Fits:
Porsche 964 1989-94
Porsche 993 1994-98
Porsche 996 1998-04
Porsche 997.1 Turbo 2000-09
Porsche 997.2 Turbo 2010-13
Porsche 997 GT3 2007-11

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Diagram ref 14

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96410517103

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Camshaft timing chain.
Timing chain from the intermediate shaft to the heads. Two required. Price is for each.

Fits:
Porsche 996 Carrera 3.6L 2002-2004
Porsche 987 Boxster / Boxster S 2005-08
Porsche 987C Cayman / Cayman S 2005-08
Porsche 997 Carrera 3.6L / S 3.8L 2005-08 COUPE / CABRIO

Diagram ref no. 26

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99610515201

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Camshaft timing chain.
Timing chain from the intermediate shaft to the heads.
Two required. Price is for each.

Fits:
Porsche 996 Carrera 3.6L 2002-2004
Porsche 987 Boxster / Boxster S 2005-08
Porsche 987C Cayman / Cayman S 2005-08
Porsche 997 Carrera 3.6L / S 3.8L 2005-08 COUPE / CABRIO

Diagram ref no. 26

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99610515201

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Chain adjuster sealing o-ring. 18,77 x 1,78
3 per engine. Price is for each.



Fits:
Porsche 996
Porsche 986 Boxster
Porsche 987 Boxster
Porsche 987C Cayman
Porsche 997.1 Gen

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Diagram ref no 25

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99970734440

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Chain adjuster sealing ring. 27 x 32
3 per engine. Price is for each.



Fits:
Porsche 996
Porsche 986 Boxster
Porsche 987 Boxster
Porsche 987C Cayman
Porsche 997.1 Gen

Click 'Zoom in' for large parts diagram.
Diagram ref no 37

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90012314730

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Chain adjuster sealing ring. 27 x 32
3 per engine. Price is for each.

Fits:
Porsche 996
Porsche 986 Boxster
Porsche 987 Boxster
Porsche 987C Cayman
Porsche 997.1 Gen

Click 'Zoom in' for large parts diagram.
Diagram ref no 37

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90012314730

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Chain adjuster, with green seal.



Fits:
Porsche 987 Boxster MKI 2005-08
Porsche 987 Cayman MKI 2005-08
Porsche 997 Carrera MKI 2005-08
Porsche 996 Carrera

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Diagram ref no 34

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99610518802

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Chain Guide. 2 per engine.



Fits:
Porsche 986 Boxster
Porsche 996 1998-05

Click picture for large parts diagram.
Diagram Ref No 33.

Chain guide.
2 per engine. Sold each.



Fits:
Porsche 986 Boxster
Porsche 996 1998-05

Click 'Zoom in' for large parts diagram.
Diagram Ref No 33.

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99610517353

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Chain adjuster, with green seal. 15/08/2000>>

Fits:

• Porsche Boxster 986 2.7L 2001 - 2002
• Porsche Boxster 986 S 3.2 2001- 2002

Cars With Engine Codes:
M96.21 / M96.22 / M96.23 / M96.24

• Porsche Boxster 987 2.7L 2005 -08/08
• Porsche Boxster 987 S 3.2/3.4L 2005-08/08

Cars With Engine Codes:
M96.25 / M96.26 / M97.20 / M97.21 / M97.22

• Porsche Cayman 2.7L 987C 2006-08
• Porsche Cayman S 3.4L 987C 2005-08

Cars With Engine Codes:
M97.21 / M97.20 / M97.22

• Porsche Boxster 996 3.4L 2001
• Porsche Boxster 996 3.6L 2001- 2005

Cars With Engine Codes:
M96.01 / M96.02 / M96.03 / M96.04

• Porsche 997 Carrera 2 3.6L 2005>>
• Porsche 997 Carrera 2S 3.8L 2005>>
• Porsche 997 Carrera 4 3.6L 2005>>
• Porsche 997 Carrera 4S 3.8L 2005>>

Cars With Engine Codes:

M97.01 / M96.05

Diagram ref no 35

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99610518058

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Chain Tensioner Adjuster.

The Chain Tensioner Adjuster is an essential part of your engine’s timing system. Its role is to keep the timing chain under precise tension, ensuring smooth synchronization between the crankshaft and camshafts for accurate valve timing and dependable engine performance.
Over time, chain tensioners can weaken, leading to slack, noise, and timing irregularities. Left unchecked, this can cause severe engine damage. Replacing the adjuster restores proper chain tension, reduces rattling, and helps protect your engine from costly failures.

Fits:

• Porsche Boxster 986 2.7L 2001 - 2002
• Porsche Boxster 986 S 3.2 2001- 2002

Cars With Engine Codes:
M96.21 / M96.22 / M96.23 / M96.24

• Porsche Boxster 987 2.7L 2005 -08/08
  
• Porsche Boxster 987 S 3.2/3.4L 2005-08/08
  

Cars With Engine Codes:
M96.25 / M96.26 / M97.20 / M97.21 / M97.22

• Porsche Cayman 2.7L 987C 2006-08
  
• Porsche Cayman S 3.4L 987C 2005-08
  

Cars With Engine Codes:
M97.21 / M97.20 / M97.22

• Porsche Boxster 996 3.4L 2001
• Porsche Boxster 996 3.6L 2001- 2005

Cars With Engine Codes:
M96.01 / M96.02 / M96.03 / M96.04

• Porsche 997 Carrera 2 3.6L 2005>>
• Porsche 997 Carrera 2S 3.8L 2005>>
• Porsche 997 Carrera 4 3.6L 2005>>
• Porsche 997 Carrera 4S 3.8L 2005>>

Cars With Engine Codes:
M97.01 / M96.05

What This Product Does:
The chain tensioner adjuster is a key component in Porsche engines with timing chains. Its job is to keep the chain at the correct tension, ensuring the crankshaft and camshafts remain perfectly synchronized.

Functions:

• Maintains proper chain tension for precise valve timing.
• Reduces slack, vibration, and chain rattle.
• Prevents chain skipping or jumping teeth under load.
• Protects the chain, guides, and sprockets from premature wear.
  
  

Symptoms Of A Faulty Chain Tensioner Adjuster:

• Rattling or metallic noise from the timing chain area, especially at cold start.
  
• Engine light from timing irregularities.
  
• Engine misfires or rough idle due to incorrect valve timing.
  
• Loss of performance or efficiency.
  
• In severe cases timing chain failure, which can cause catastrophic engine damage.
  
  

Why Replacement Matters:
This part is critical to engine reliability. A worn or failing chain tensioner can lead to major timing issues, risking serious internal damage.
Replacing it ensures:

• Correct tension and timing accuracy.
  
• Reduced noise and vibration from the chain system.
• Long-term protection of the timing chain, guides, and engine.

It’s strongly recommended to replace the tensioner during timing chain service, rebuilds, or if early warning symptoms are present.

Diagram Ref No 35

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99610518058

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