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Porsche // Cayenne 92A (958) 2010-2017 // 958 Cayenne S V6 3.0L Hybrid (380Hp) 2010-17
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- Porsche 971.1 Panamera 4S Diesel V8 4.0L 4WD (422 Hp) 2017-18
- Porsche 971.1 Panamera 4S Diesel 4.0L Twin-Turbo V8 Sport Turismo 2017-18
The IWIS Timing Chain is a replacement internal engine timing component for compatible Porsche applications. It forms part of the engine's mechanical timing system and helps maintain accurate synchronisation between the crankshaft, camshafts and associated timing components, depending on the specific engine configuration.
Fits:
- Porsche 971.1 Panamera 4S Diesel V8 4.0L 4WD (422 Hp) 2017-18
- Porsche 971.1 Panamera 4S Diesel 4.0L Twin-Turbo V8 Sport Turismo 2017-18
Diagram Ref No 1
Operating continuously whenever the engine is running, the timing chain transfers rotational movement through the timing system and helps maintain the precise mechanical relationship between associated engine components. Accurate timing is essential for correct valve operation, smooth combustion, reliable starting and consistent engine performance.
Although timing chains are designed for extended service life, continuous mechanical loading, friction, heat and lubrication conditions can gradually cause wear to the chain pins, links and contact surfaces. Timing-chain guides, tensioners and sprockets can also deteriorate. Excessive wear can increase chain slack, produce abnormal mechanical noise and eventually affect timing accuracy.
What This Product Does:
The Timing Chain transfers mechanical rotation through the engine timing system and helps maintain the required synchronisation between associated rotating components.
Depending on the specific engine configuration, correct timing-chain operation helps support:
- Accurate mechanical engine timing
- Correct camshaft operation
- Correct valve timing
- Crankshaft and camshaft synchronisation
- Reliable engine starting
- Stable combustion
- Smooth idle
- Consistent engine performance
- Predictable throttle response
- Reliable power delivery
The chain must remain correctly tensioned, properly lubricated and securely engaged with its sprockets for reliable operation.
Symptoms Of Wear Or Failure:
Possible symptoms of timing-chain or associated timing-system deterioration include:
- Metallic rattling or clattering
- Timing-chain rattle during cold starts
- Rattle immediately after engine start-up
- Mechanical noise from the timing area
- Noise that changes with engine RPM
- Excessive chain slack
- Timing-chain elongation
- Excessive tensioner travel
- Rough or unstable idle
- Difficult or extended starting
- Reduced engine performance
- Poor throttle response
- Engine misfires
- Check-engine warning
- Timing-related diagnostic fault codes
- Camshaft-position faults
- Crankshaft/camshaft correlation faults
- Variable valve timing faults, where applicable
- Visible chain or link wear
- Worn or damaged timing-chain guides
- Abnormal sprocket wear
- Metal or plastic wear debris in the engine oil or filter
These symptoms do not automatically confirm timing-chain failure. Defective tensioners, damaged guides, worn sprockets, variable timing components, sensors, wiring faults or lubrication problems can produce similar symptoms.
Why Replacement Matters:
The Timing Chain performs a critical mechanical role within the engine timing system.
Replacing a confirmed worn, elongated or damaged timing chain can help:
- Restore accurate mechanical synchronisation
- Maintain correct engine timing
- Restore dependable timing-chain operation
- Reduce excessive chain slack
- Reduce abnormal timing-chain noise
- Maintain reliable sprocket engagement
- Protect timing-chain guides
- Protect associated sprockets
- Reduce the risk of timing deviation
- Reduce the risk of the chain jumping
- Reduce the risk of chain derailment
- Support smooth engine operation
- Protect expensive internal engine components
Ignoring a confirmed timing-chain problem can allow wear to progress and potentially turn a timing-system repair into a significantly more extensive engine repair.
Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.
9A710925203
The product you are viewing cross references to these numbers
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- Porsche 958 Cayenne V6 3.0L Diesel (245Hp) 2010-17
- 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
Fits:
Porsche 958 Cayenne 3.0L Hybrid 2011-18
Porsche 970 Panamera 3.0L Hybrid 2013-16
Click 'Zoom in' for large parts diagram.
Diagram ref no 11
Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.
95810546900
The product you are viewing cross references to these numbers
- Porsche 958 Cayenne V6 3.0L Diesel (245Hp) 2010-17
- 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
Fits:
Porsche 958 Cayenne 3.0L Hybrid 2011-18
Porsche 970 Panamera 3.0L Hybrid 2013-16
Click 'Zoom in' for large parts diagram.
Diagram ref no 26
Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.
95810550710
The product you are viewing cross references to these numbers
- Porsche 958 Cayenne V6 3.0L Diesel (245Hp) 2010-17
- 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
Fits:
Porsche 958 Cayenne 3.0L Hybrid 2011-18
Porsche 970 Panamera 3.0L Hybrid 2013-16
Click 'Zoom in' for large parts diagram.
Diagram ref no 11
Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.
95810551400
The product you are viewing cross references to these numbers
- 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
Fits:
Porsche 958 Cayenne Hybrid 3.0L 2010-18
Porsche 970 Panamera Hybrid 3.0L 2011-16
Click 'Zoom in' for large parts diagram.
Diagram ref no 29 (LEFT) or 33 (RIGHT)
Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.
PAC10921
The product you are viewing cross references to these numbers