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Porsche > Boxster 986/987/981 (1997-2016) > Engine Rebuild Parts > Chains & Tensioners >

Engine Camshaft Adjuster and Bolt Kit. Porsche 958 Cayenne V8 / 970 Panamera V8 / 970 Panamera V6 3.6ltr  ❭  94810505123KIT1

Engine Camshaft Adjuster and Bolt Kit. Porsche 958 Cayenne V8 / 970 Panamera V8 / 970 Panamera V6 3.6ltr - 94810525400 - 94810505123KIT
5
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94810505123KIT1
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Complete Engine Camshaft Adjuster and Bolt Kit - Variable Valve Timing Repair Solution

This camshaft adjuster and bolt kit provides a complete solution for restoring correct camshaft timing operation on Porsche 958 Cayenne 4.8 litre V8 and 970 Panamera 4.8ltr V8 and 3.6ltr V6 engines.

Fits:

  • 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 970.2 Panamera V6 3.6L 2WD (310Hp) 2014-16
  • Porsche 970.2 Panamera 4 V6 3.6L 4WD (310Hp) 2014-16
  • Porsche 970.2 Panamera 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
Diagram ref no 9 and 10

The kit includes:
2 x Camshaft adjuster unit
2 x Securing bolt (single-use torque fastener)

Designed to meet OEM specifications, this kit ensures precise valve timing control and reliable engine performance.

What the Camshaft Adjuster Does

The camshaft adjuster is a key component of Porsche’s VarioCam variable valve timing system. It allows the engine control unit to adjust camshaft timing dynamically depending on engine speed, throttle input and load conditions.

By advancing or retarding valve timing, the camshaft adjuster helps to:

  • Improve low-end torque
  • Enhance high-RPM power delivery
  • Optimise fuel efficiency
  • Reduce exhaust emissions
  • Maintain smooth engine operation

The securing bolt clamps the adjuster firmly to the camshaft, ensuring accurate alignment and stable operation under high engine loads.

Why Camshaft Adjusters and Bolts Fail

Camshaft adjusters operate under high oil pressure and constant rotational stress. Over time, they may fail due to:

  • Internal wear of adjustment mechanisms
  • Oil contamination or sludge buildup
  • Loss of hydraulic pressure control
  • High mileage wear Aggressive driving conditions

The securing bolts are often torque-to-yield fasteners designed for single use. Reusing old bolts can lead to insufficient clamping force, improper seating or loosening under load.

Common symptoms of failure include:

  • Check engine light illumination
  • Camshaft position or timing correlation fault codes
  • Rough idle or hesitation
  • Loss of power
  • Rattling noise from the timing area
  • Reduced fuel efficiency

In severe cases, incorrect cam timing can cause further engine damage if not addressed promptly.

Why You May Need This Camshaft Adjuster Kit

If your Porsche 958 Cayenne 4.8 V8 or 970 Panamera 4.8 V8 or 3.6 V6 is displaying camshaft timing faults, replacing both the adjuster and the securing bolt ensures a complete and reliable repair.

This kit is essential during:

  • VarioCam repairs
  • Timing chain service
  • Cylinder head work
  • Engine rebuilds
  • Camshaft replacement
  • Diagnosis of camshaft timing deviation codes

Installing a new adjuster together with a new bolt guarantees proper torque specification and long-term timing stability.



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Original Porsche Genuine OE timing chain tensioner guide used in the timing system. It provides the guided surface against which the timing chain runs under tension, working together with the timing chain tensioner to ensure correct chain tension and positioning.
Sold each, 2 required per vehicle

Fits:
Porsche 986 Boxster 2.5L / 2.7L / 3.2L  1997 - 2002
Porsche 996 3.4L 1998 - 2002

Diagram ref no 30.

This timing chain tensioner guide is a factory-original Porsche component, engineered to the exact material, dimensions, and performance standards specified by Porsche. Installed within the engine’s timing case, it serves as a precision wear surface for the timing chain under the applying force of the hydraulic tensioner.

The timing chain tensioner guide works with the hydraulic tensioner to maintain consistent tension on the timing chain as it cycles over the crankshaft and camshaft sprockets. It provides a controlled sliding surface that helps prevent slack, reduces chain vibration and noise, and supports accurate cam/crank synchronization throughout the engine’s operating range.

Function: Mounted in the timing chain housing, this OEM guide interfaces directly with the tensioner assembly and the timing chain itself. As the hydraulic tensioner applies pressure, the guide helps distribute that force evenly across the chain’s path, ensuring that the chain remains correctly tensioned and aligned. This contributes to smooth, quiet timing system operation, consistent valve timing, and reduced risk of premature wear on timing chains and sprockets.

Timing chain tensioner guides are critical wear items in Porsche M96 engines. Over time, the guide surface can wear, deform, or develop grooves due to prolonged chain contact and heat cycling. A compromised guide can lead to slack, chain vibration, noise (“chain rattle”), and irregular chain travel - conditions that increase stress on the chain and sprockets, and can lead to premature system wear or failure. Replacing worn tensioner guides with Genuine Porsche OE parts restores the exact engineered surface and interaction with the timing chain and tensioner. This helps maintain quiet, accurate timing operation and protects the engine’s costly timing components.

When to replace:
• Noise from the timing chain area (rattle or chatter)
• During timing chain system inspection or overhaul
 Visible wear or plastic debris from the guide surfaces
• High-mileage preventive maintenance
• Whenever the timing system is serviced or the tensioner is replaced

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Timing chain guide.
Genuine Porsche Original Equipment (OE) timing chain guide used in the timing system. It provides a precisely engineered surface against which the timing chain runs, helping maintain correct chain alignment and reduce chain noise and wear.
Sold each, 2 required per engine. 

Fits:
Porsche 986 Boxster 2.5L / 2.7L / 3.2L 1997 - 2002
Porsche 996 3.4L 1998 - 2001

Diagram ref no 33.

The timing chain guide provides a wear-resistant contact surface that supports the timing chain’s path as it moves over the crankshaft and camshaft sprockets. It helps maintain correct chain alignment, reduces vibration and chatter, and minimises wear on the chain and related components - especially under repeated load cycles and high-RPM conditions.

Installed inside the timing case, this OE guide sits in the chain’s routing path and provides a controlled sliding surface that interacts with the chain links. It works in conjunction with the timing chain tensioner (e.g., 99610517552) to ensure correct chain tension, reduce chain slack, and preserve accurate valve timing as designed by Porsche.

The timing chain guide is a critical wear item in Porsche M96 engines. Over time, the original guide surfaces can wear, crack, or deform due to friction and engine heat. A compromised guide can lead to timing chain noise (often described as “chain rattle”), reduced tension control, or uneven wear of the chain and sprockets.

Replacing worn or failed guides with a Genuine Porsche OE part restores the exact engineered surface, ensures accurate chain control, reduces noise, and helps protect high-cost timing system components - preserving the precision and performance that Porsche designed into the engine.

When to replace:
•  Engine exhibits timing chain noise, especially at start-up or idle
•  Timing chain slack or vibration is observed
•  During major engine service or rebuild
•  When original guide shows cracking, abrasion, or wear scoring
•  Preventive replacement on high-mile engines

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Fits:
Porsche 996 3.4L C2/C4 1998-01
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Click 'Zoom in' for large parts diagram.
Diagram ref No 26.

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