Crankshaft Pulley. Porsche 986 Boxster / 987 Boxster / 987 Cayman / 996 / 997.1  ❭  99610211563

Crankshaft Pulley, Part Number: 996 102 115 63, also referenced as 996-102-115-63. Fits Porsche models equipped with M96 and M97 engines, including Boxster, Cayman, and 911 variants from approximately 1997 to 2008. It transmits rotational force to drive accessories via the belts (e.g., alternator, power steering, A/C) and helps absorb crankshaft vibrations, protecting engine components and maintaining smooth operation.

Fit:
Porsche 986 Boxster 1997-04
Porsche 987 Boxster 2005-08
Porsche 987C Cayman 2005-08
Porsche 996 C2/C4/C4S 1998-04
Porsche 997 3.6L 2005-08

Crankshaft pulleys like this one are designed to last the engine's lifetime, but here are the common failure modes to watch for: 

• Rubber deterioration or separation causing excessive vibrations 
• When the vibration damper fails, crankshaft vibrations aren’t absorbed, leading to noticeable engine shake—especially at certain RPMs—which can damage internal components and accessories. 
• Noisy operation or belt misalignment. A failing pulley may cause the belt to slap or misalign, resulting in rubbing noises or excessive wear. 
• Battery warning light or charging glitch. If the pulley fails and stops turning the alternator belt, the battery light may illuminate due to loss of charging. 

Diagram Ref No 6

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