Guide Rail. Porsche 957 / 958 Cayenne 3.6L Petrol 2007-17  ❭  95510506600

Guide Rail. 
The Genuine Porsche Guide Rail is an original equipment engine timing component designed to guide and support the timing chain on compatible Porsche engines. Manufactured to Porsche's exact specifications for fit, strength and durability, this precision-engineered guide rail maintains the correct timing chain path while working in conjunction with the chain tensioner to minimise chain movement, reduce vibration and ensure accurate valve timing.  

Fits:

• Porsche 957 Cayenne 3.6L 2007-10
• Porsche 958 Cayenne V6 3.6L Petrol (300Hp) 2010-17  

Diagram Ref No 13

Manufactured from high-strength engineering-grade composite material bonded to a robust metal backing where applicable, the guide rail is designed to withstand continuous contact with the timing chain, elevated engine temperatures, engine oil exposure and repeated thermal cycling. Precision-engineered for direct OE replacement, it provides factory-correct fitment and dependable long-term performance during engine repairs, timing chain replacement or complete engine rebuilds.  

What This Product Does:

• Guides the timing chain along its correct operating path.
• Maintains correct timing chain alignment.
• Works with the chain tensioner to control chain movement.
• Reduces timing chain vibration and operating noise.
• Minimises wear on the timing chain and sprockets.
• Supports accurate camshaft and crankshaft timing.
• Restores factory timing system operation.
• Forms an essential part of the engine timing assembly.

Symptoms Of Wear Or Failure:

• Rattling noise from the timing chain area, especially during cold starts.
• Increased timing chain noise while driving.
• Engine management or check engine warning light.
• Timing-related fault codes.
• Rough idle or reduced engine performance.
• Visible wear grooves or cracks on the guide rail.
• Broken or missing guide rail material.
• Accelerated timing chain wear.
• Timing chain slack caused by worn guides.
• Severe engine damage if guide failure allows the timing chain to jump timing.

Why Replacement Matters:

• The timing chain guide rail is subjected to constant contact with the timing chain while operating under high engine speeds, continuous oil lubrication and elevated temperatures. Over time, the guide surface naturally wears, while the composite material can become brittle, crack or break due to age and repeated thermal cycling.
• A worn or damaged guide rail can allow excessive timing chain movement, increasing chain noise and accelerating wear of the chain, sprockets and tensioner. In severe cases, guide rail failure can cause the timing chain to lose correct tension or jump timing, potentially resulting in extensive internal engine damage.
• Replacing a worn or damaged guide rail with a Genuine Porsche component restores proper timing chain guidance and protects the complete timing system. Manufactured to Porsche's exact engineering standards, the Genuine Porsche Guide Rail provides factory-correct fitment, exceptional durability and dependable long-term reliability, helping maintain precise valve timing, smooth engine operation and the performance expected from your Porsche.

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