Timing Chain, Right Upper. Porsche 970 Panamera / 958 Cayenne HYBRID  ❭  958109465D

• Porsche 958 Cayenne S V6 3.0L Hybrid (380Hp) 2010-17
• Porsche 970.1 Panamera S Hybrid V6 3.0L 2011-13
• Porsche 970.2 Panamera S E-Hybrid V6 3.0L (416Hp) 2014-16  

The timing chain operates continuously whenever the engine is running. Although manufactured for long service life, gradual wear can develop at the chain links, pins and contact surfaces, as well as in associated guides, tensioners and sprockets.

A worn, elongated or damaged timing chain can develop excessive slack, create abnormal mechanical noise and affect timing accuracy. If deterioration becomes severe enough for the chain to jump, derail or fail, significant internal engine damage may result.

What This Product Does:
The right upper timing chain forms part of the engine's mechanical timing drive.

Its role is to transfer rotational movement between associated timing components while maintaining their required mechanical relationship.

This helps support:

• Accurate engine timing
• Correct synchronisation of associated components
• Reliable transfer of rotational drive
• Accurate camshaft drive where applicable
• Correct valve timingSmooth engine operation
  
• Stable combustionConsistent engine performance

The chain must remain correctly tensioned, lubricated and properly engaged with its associated sprockets for dependable operation.

Symptoms Of Wear Or Failure:
Possible signs of timing-chain or associated timing-system deterioration include:

• Metallic rattling from the timing area
• Clattering or chain noise
• Rattle during cold starts
• Excessive chain slack
• Timing-chain elongation
• Mechanical noise at idle
• Noise that changes with engine speed
• Rough or irregular engine operation
• Unstable idleDifficult starting
  
• Reduced engine performance
• Engine warning light
• Timing-related diagnostic fault codes
• Crankshaft/camshaft correlation faults where applicable
• Misfires or irregular combustion
• Visible chain wear during inspection
• Worn or damaged chain guides
• Abnormal sprocket wear
• Metal or plastic debris in the engine oil or oil filter

These symptoms can also be produced by other timing-system or internal engine faults, so accurate diagnosis is important before replacing individual components.

Why Replacement Matters:
The right upper timing chain is an important part of the engine's mechanical timing system.

Replacing a confirmed worn, elongated or damaged IWIS Timing Chain, Right Upper can help:

• Restore dependable timing-chain operation
• Maintain accurate mechanical synchronisation
• Restore correct camshaft drive where applicable
• Reduce excessive chain slack
• Reduce abnormal timing-chain noise
• Protect associated guides and sprockets
• Reduce the risk of timing deviation
• Reduce the risk of chain derailment
• Reduce the risk of the chain jumping
• Support smooth engine operation
• Protect expensive internal engine components

Continued operation with a confirmed timing-chain problem can allow deterioration to progress and increase the risk of a considerably more expensive engine repair.