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.jpg?width=440&height=320 "Hex Head Bolt Camshaft Adjuster. Porsche 957 / 958 Cayenne V8 / 970 Panamera V8 / 970 Panamera V6 3.6ltr - 94810525400")
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- Porsche 957 Cayenne S / GTS 4.8L 2007-10
- Porsche 957 Cayenne Turbo / Turbo S 4.8L 2007-10
- 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
Porsche Camshaft Adjuster Bolt - M12 x 1,5 x 110
Precision Camshaft Timing Securing Bolt for Porsche Engines
The camshaft adjuster bolt (part number is a
critical fastening component used in the variable camshaft timing system, this bolt secures the camshaft adjuster unit to the
camshaft assembly.
Fits:
- Porsche 957 Cayenne S / GTS 4.8L 2007-10
- Porsche 957 Cayenne Turbo / Turbo S 4.8L 2007-10
957 Cayenne - From engine numbers
M905541
MG904965
M901689
MT901788
MS900562
- 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 10
It plays a vital role in maintaining correct valve timing and engine performance.
What the Camshaft Adjuster Bolt Does
The Porsche engines use a variable valve timing system, often referred to as VarioCam, to optimise engine efficiency, torque and power output across the rev range.
The camshaft adjuster:
- Alters camshaft timing based on engine load and RPM
- Improves low-end torque and high-end power
- Enhances fuel efficiency
- Reduces emissions
- Maintains smooth engine operation
The camshaft adjuster bolt secures the timing adjuster mechanism firmly in place. Correct torque and clamping force are essential to ensure precise camshaft alignment and stable timing control.
Why Camshaft Adjuster Bolts Fail
Camshaft adjuster bolts are subject to:
- High rotational forces
- Continuous vibration
- Heat cycling from engine operation
- Torque stress during installation
In many cases, these bolts are torque-to-yield fasteners, meaning they are designed for single-use installation. Reusing an old bolt can result in reduced clamping force or improper seating.
Failure or incorrect installation can lead to:
- Timing deviation fault codes
- Rattling noises from the camshaft area
- Poor engine performance
- Check engine light illumination
- Severe engine damage if timing shifts significantly
Why You May Need a Replacement Camshaft Adjuster Bolt
Whenever the camshaft adjuster, timing components or camshafts are removed, the securing bolt should be replaced to maintain correct torque specifications.
This camshaft adjuster bolt is essential during:
- VarioCam repairs
- Timing chain service
- Camshaft replacement
- Engine rebuilds
- Cylinder head work
- Fault code diagnosis relating to camshaft timing
Replacing the bolt ensures proper clamping force and protects the integrity of the Porsche timing system.
Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.
94810525400
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