INA ZT02371 Engine Timing Chain Tensioner Piston

INA ZT02371 Engine Timing Chain Tensioner Piston

INA ZT02371 is an engine timing chain tensioner piston for select BMW valve train applications. It is used in timing chain systems where consistent chain tension is required for accurate camshaft timing and smooth engine operation.

Key Features

• Engine timing chain tensioner piston for valve train service
• INA Global Number 551 0237 100
• Cross-references part number 5510237100 for the same application
• Direct fitment for select BMW 740i, 650Ci, 550i, 650i, X5, 750i, 750Li, 545i, 645Ci, 745i, and 745Li applications
• Part number: ZT02371

Detailed Description

This INA timing chain tensioner piston is cataloged for BMW engine timing chain service across multiple model years. It fits 2011-2013 BMW 740i, 2006-2011 BMW 650Ci, 2006-2010 BMW 550i, 2006-2010 BMW 650i, 2004-2010 BMW X5, 2006-2008 BMW 750i, 2006-2008 BMW 750Li, 2004-2006 BMW 545i, 2004-2005 BMW 645Ci, 2002-2005 BMW 745i, and 2002-2005 BMW 745Li. If you are replacing a BMW timing chain tensioner piston on an N62-era valve train application, ZT02371 provides the correct cataloged match.

What It Helps Address

• Timing chain slack
• Chain noise during engine operation
• Incorrect camshaft timing from worn tensioning components
• Valve train rattle on high-mileage BMW engines
• Service replacement for a worn or sticking tensioner piston

Installation Notes

Verify engine code and OE cross-reference before installation. Inspect the timing chain, guides, and related valve train components during service, since wear in adjacent parts can affect tensioner performance. Confirm the application against the vehicle’s model year and engine configuration before ordering.

Quality Assurance

INA is an established OE-level engine component brand, and this part is identified by INA Global Number 551 0237 100 for application matching. Part number ZT02371 is cataloged for direct replacement use in the listed BMW applications.