Genuine Porsche 996-105-188-02 Engine Timing Chain Tensioner

The Genuine Porsche 996-105-188-02 is an oil-pressurized timing chain tensioner designed to maintain proper tension on the timing chain that runs between the crankshaft and camshaft, preventing catastrophic engine damage from chain slack or timing issues. If the timing chain develops slack due to a poor tensioner, timing can be affected, skip a tooth and cause catastrophic damage to your engine.

Key Features:

• Genuine Porsche OEM component ensuring exact fit and factory specifications
• Oil-pressurized hydraulic design maintains consistent chain tension during operation
• Keeps the timing chain tight on the cam gears and crank while the engine is running
• Direct replacement for worn or failing tensioners
• Ensures proper synchronization between crankshaft and camshaft

This tensioner is used on various applications including intermediate to cam positions for 911 models and intermediate to exhaust camshaft positions for Boxster and Cayman models, specifically for cylinders 4-6. Installation requires seal part number 900-123-147-30 (sold separately). This part supersedes earlier part numbers 996-105-176-51, 996-105-188-00, and 996-105-188-01.

Maintaining proper timing chain tension is critical for engine reliability and performance. Replace timing chain tensioners during timing system service or at the first sign of chain noise or rattle.