iwis 11311432177 Upper Timing Chain Camshaft to Camshaft BMW

The iwis 11311432177 is an OE-grade upper timing chain designed to synchronize the intake and exhaust camshafts on BMW M50, M52, M52TU, M54, S50, and S52 engines. This endless chain without master link connects the two camshaft sprockets and is driven by the exhaust camshaft and main timing chain, ensuring precise valve timing for proper engine operation.

Key Features:

• OEM-quality timing chain manufactured by iwis, a leading German supplier to BMW
• Endless design without master link for reliable performance
• Engineered with proprietary alloy materials and heat treatment processes
• Designed to resist stretching and wear for extended service life
• Direct replacement for worn or stretched timing chains
• Maintains engine timing accuracy under high loads and RPM conditions

Though BMW considers timing chains lifetime parts, most enthusiasts replace them as preventive maintenance during engine rebuilds or when exhibiting signs of wear. Symptoms of a worn timing chain include rattling or slapping sounds from the engine, especially on startup, and reduced engine performance due to timing inaccuracies. This replacement chain helps restore proper valve timing and prevent potential engine damage from chain failure.

Cross-Reference Numbers: 11-31-1-432-177, 11 31 1 432 177