Belt Tensioner Damper. Porsche 957 / 958 Cayenne 3.0L Diesel 2007-18  ❭  958145201

Belt Tensioner Damper.

The OE MATCH Porsche Belt Tensioner Damper is a auxiliary drive system component designed to absorb vibration and stabilise the movement of the drive belt tensioner on compatible Porsche models. This precision-engineered damper helps maintain consistent belt tension, reducing belt oscillation and ensuring the reliable operation of engine-driven accessories such as the alternator, air conditioning compressor, power steering pump and water pump where applicable.

Fits:

• Porsche 957 Cayenne 3.0L Diesel 2007-10
• Porsche 958 Cayenne V6 3.0L Diesel (245Hp) 2010-17 

 
Diagram Ref No 1

The tensioner damper is engineered to withstand continuous engine vibration, high operating temperatures and repeated load changes. Designed as a replacement, it integrates seamlessly with the auxiliary belt tensioner assembly, delivering correct belt control and long-term reliability.  

What This Product Does:

• Dampens movement of the auxiliary drive belt tensioner.
• Maintains consistent drive belt tension.
• Reduces belt vibration and oscillation.
• Helps prevent belt slip during acceleration and load changes.
• Protects the auxiliary belt and tensioner assembly from premature wear.
• Supports reliable operation of engine-driven accessories.
• Forms an essential part of the engine auxiliary belt drive system.

Symptoms Of Wear Or Failure:

• Excessive movement of the belt tensioner.
• Auxiliary drive belt vibration or flutter.
• Squealing or chirping noises from the drive belt.
• Rattling noises from the front of the engine.
• Premature auxiliary belt wear.
• Belt slipping under load.
• Visible hydraulic fluid leakage from the damper (where applicable).
• Cracked or damaged damper housing or mounting points.
• Inconsistent operation of engine-driven accessories.
• Premature failure of the belt tensioner assembly.

Why Replacement Matters:

• The belt tensioner damper is subjected to constant engine vibration, rapid changes in belt load and continuous movement throughout engine operation. Over time, the internal damping mechanism can wear or lose effectiveness, while seals and mounting components may deteriorate due to heat and age.
• A worn tensioner damper can allow excessive belt movement, increasing the risk of belt slip, noise and premature wear of the auxiliary belt, tensioner and driven components. If left unresolved, it can lead to accessory drive failure and unexpected vehicle breakdown.

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

958145201

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