Timing chain tensioner blade. Porsche 997.1 / 987 Boxster / 987C Cayman  ›  99610515

Timing chain tensioner blade
This original Porsche chain guide / tensioner blade forms part of the engine timing chain system, helping guide and support the timing chain while maintaining correct chain tracking and tension.

Fits:
Porsche 997.1 Carrera 3.8L 2005 - 2008
Porsche 987.1 Boxster 2.7L / 3.2L / 3.4L 2005 - 2008
Porsche 987C.1 Cayman 2.7L / 3.4L 2006 - 2008

Diagram ref no 30

These parts are used in the engine timing chain system on selected Porsche M96 / M97 flat-six engines.

What This Part Does / Functions
•  Guides the timing chain during engine operation
•  Works with the chain tensioner to maintain correct chain tension
•  Helps keep the timing chain aligned on its correct path
•  Reduces timing chain vibration and slap
•  Supports accurate camshaft timing
•  Replaces a worn, cracked, broken or noisy original tensioner blade
•  Helps prevent timing chain wear from poor guidance
•  Provides correct Genuine Porsche fitment and material specification

Why Replace This Part?
Timing chain tensioner blades are wear components within the engine timing system. They are exposed to constant chain contact, engine oil, heat cycles, vibration and high engine speeds. Over time, the guide surface can wear, crack or break down, which may cause chain noise, timing instability or accelerated chain wear.

Replacing worn blades with Genuine Porsche timing chain tensioner blades helps restore correct timing chain guidance and supports reliable engine operation.

Common Symptoms of a Worn Timing Chain Tensioner Blade
•   Timing chain rattle or slap
•   Noise from the timing chain area
•   Worn or damaged guide surface
•   Broken or cracked plastic guide rail
•   Chain tensioner service requiring blade replacement
•   Timing deviation faults in severe cases
•   Metal or plastic debris found during engine inspection
•   Wear found during camshaft timing or engine rebuild work.

When to Replace This Part
•  During timing chain service or engine rebuild
•  If the tensioner blade is worn, cracked or broken
•  When replacing timing chains or chain tensioners
•  If timing chain noise is traced to worn guide components
•  During camshaft timing repair
•  During major engine service with the timing covers removed
•  If plastic guide material is found in the oil system

Where It Fits on the Car
These tensioner blades fit inside the engine timing chain / camshaft drive system.
They are fitted by cylinder bank:
  •   99610515600 – left side, cylinders 1–3
  •   99610515801 – right side, cylinders 4–6

Correct bank selection is essential before ordering.

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

99610515

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