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Porsche > Panamera 970 MK1 (2009-2013) > 970.1 Panamera Turbo V8 4.8L 2009-13 > Engine Rebuild Parts >

Engine Bolts / Studs

Engine Bolts / Studs

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DISPLAYING 1 to 3 (of 3 products)
Camshaft Adjuster and Bolt. Porsche 958 Cayenne V8 / 970 Panamera V8 / 970 Panamera V6 3.6ltr - 94810525400
4
Camshaft Adjuster and Bolt. Porsche 958 Cayenne V8 / 970 Panamera V8 / 970 Panamera V6 3.6ltr
94810505123KIT
Product Information
Product Information

Porsche 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:
1 x Camshaft adjuster unit
1 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.



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Related, superseded, cross reference or alternative numbers for comparison.

94810505123KIT
94810525400

The product you are viewing cross references to these numbers
Engine Camshaft Adjuster and Bolt Kit. Porsche 958 Cayenne V8 / 970 Panamera V8 / 970 Panamera V6 3.6ltr - 94810525400 - 94810505123KIT
5
Engine Camshaft Adjuster and Bolt Kit. Porsche 958 Cayenne V8 / 970 Panamera V8 / 970 Panamera V6 3.6ltr
94810505123KIT1
Product Information
Product Information

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.



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Related, superseded, cross reference or alternative numbers for comparison.

94810505123KIT1
94810525400

The product you are viewing cross references to these numbers
Hex Head Bolt Camshaft Adjuster. Porsche 957 / 958 Cayenne V8 / 970 Panamera V8 / 970 Panamera V6 3.6ltr - 94810525400
2
Hex Head Bolt Camshaft Adjuster. Porsche 957 / 958 Cayenne V8 / 970 Panamera V8 / 970 Panamera V6 3.6ltr
Special Order item
94810525400
Product Information
Product Information

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
94810525400

The product you are viewing cross references to these numbers
DISPLAYING 1 to 3 (of 3 products)
Also found on these pages
About Engine Bolts / Studs

Precision Engine Bolts & Studs – Strength, Accuracy, and Reliability for Porsche Engines

Engine bolts and studs are the unsung heroes of your Porsche’s powerplant — small but vital components that ensure structural integrity under extreme stress. From securing cylinder heads and connecting rods to fastening crankcases and manifolds, every fastener must deliver uncompromising strength, precision, and clamping force to maintain your engine’s performance and reliability.

At Design911, we offer a comprehensive selection of standard and high-performance bolts, studs, nuts, and fasteners designed specifically for Porsche engines. Each high performance component is precision-engineered from high-tensile steel, titanium, or ARP-grade alloy, delivering exceptional resistance to heat, vibration, and torque fatigue.

Whether you’re rebuilding a classic air-cooled 911 or tuning a modern GT model, our manufacturer-quality fasteners guarantee secure fitment, consistent torque retention, and long-term durability.

What Do Engine Bolts and Studs Do?

Engine bolts and studs hold critical components together under immense pressure. They maintain precise torque and tension, ensuring the engine block, heads, and internal assemblies remain perfectly sealed and aligned.

Core Functions:

  • Provide secure clamping force for key engine assemblies (head, crankcase, rods, etc.).
  • Maintain torque integrity under thermal expansion and vibration.
  • Prevent component movement, preserving internal clearances and sealing surfaces.
  • Support rebuild precision, allowing components to be serviced repeatedly without distortion.

Motorsport-grade fasteners are designed to handle repeated torque cycles and extreme stress, making them essential for both performance tuning and professional engine restoration.

Why Do Engine Bolts and Studs Fail?

Over time, fasteners experience stretching, fatigue, and corrosion from heat, oil exposure, and repeated torque cycles. Even the strongest bolts have a finite service life — and failing to replace them can lead to catastrophic engine damage.

Common Causes of Failure Include:

  • Metal fatigue or stretching from repeated torque applications.
  • Corrosion and oxidation, especially in humid or high-heat environments.
  • Over-tightening or under-torquing, compromising clamping force.
  • Thread wear or damage from improper installation or debris.
  • Thermal cycling, weakening material structure over time.

Replacing aged or stressed bolts and studs during every rebuild or major service ensures your Porsche’s engine remains structurally sound and leak-free.

Why Replace with Precision-Engineered Bolts and Studs?

Upgrading to high-performance fasteners delivers the security and strength demanded by Porsche engines. Precision-engineered bolts and studs ensure consistent torque retention, improved reliability, and extended component life — especially in high-load or high-temperature conditions.

Key Benefits:
Superior clamping strength and torque retention for critical assemblies.
High fatigue resistance, preventing loosening or failure under pressure.
Improved corrosion protection with zinc, nickel, or black oxide coatings.
Ideal for rebuilds, upgrades, and performance tuning applications.
Precision-thread machining ensures repeatable installation and alignment.
Available in titanium and high-tensile steel for maximum strength-to-weight ratio.

These bolts and studs provide the perfect balance of motorsport-level performance and road-going durability, keeping your Porsche engine secure mile after mile.

Highlights:

  • Comprehensive range of bolts, studs, and fasteners for Porsche engines.
  • Manufactured from ARP-grade steel, titanium, or high-tensile alloy.
  • Precision-machined threads for perfect alignment and consistent torque.
  • Improved resistance to heat, corrosion, and vibration.
  • Essential for rebuilds, tuning, and restoration projects.
  • Designed for air-cooled and water-cooled Porsche engines.

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