INA ZT-9-5512 Engine Timing Chain Tensioner

Engine Timing Chain Tensioner for GM 4.2L Applications

The INA ZT-9-5512 engine timing chain tensioner is a direct-fit timing drive component for a wide range of GM and related vehicles. It helps maintain correct chain tension for stable valve timing, consistent power transmission, and dependable engine operation.

Fits 2004-2012 Chevrolet Colorado, N/A; Fits 2004-2012 GMC Canyon, N/A; Fits 2006-2010 Hummer H3, N/A; Fits 2009-2010 Hummer H3T, N/A; Fits 2002-2009 Chevrolet Trailblazer, N/A; Fits 2002-2009 GMC Envoy, N/A; Fits 2005-2009 Saab 9-7x, N/A; Fits 2003-2008 Isuzu Ascender, N/A; Fits 2007-2008 Isuzu i-290, N/A; Fits 2007-2008 Isuzu i-370, N/A; Fits 2004-2007 Buick Rainier, N/A; Fits 2002-2006 Chevrolet Trailblazer EXT, N/A; Fits 2006 Isuzu i-280, N/A; Fits 2006 Isuzu i-350, N/A; Fits 2002-2004 Oldsmobile Bravada, N/A.

• INA engine timing chain tensioner for timing drive service
• Supports correct gear ratios in the chain drive system
• Built for reliable operation with low maintenance requirements
• Cross-reference part number: 5510399100
• Part number: ZT-9-5512

Detailed Product Information

INA ZT-9-5512 is a timing chain tensioner used in engine valve train service where chain tension must remain controlled for accurate camshaft timing. It is listed for Chevrolet Colorado and GMC Canyon models from 2004-2012, along with Chevrolet Trailblazer, GMC Envoy, Buick Rainier, Oldsmobile Bravada, Saab 9-7x, Hummer H3, H3T, and select Isuzu applications. If you are replacing a worn timing chain tensioner on a Chevrolet Trailblazer or GMC Envoy, this part number provides a direct reference for the correct timing drive component.

Common Problems This Part Addresses

• Timing chain slack or inconsistent chain tension
• Valve timing noise from a worn tensioner assembly
• Reduced timing drive stability during engine operation
• Service replacement for a failed timing chain tensioner

Installation Notes and Tips

Verify engine code and timing drive configuration before ordering. Replace the tensioner during timing system service when wear, noise, or chain slack is present, and inspect related chain drive components for matching wear. Confirm the part number ZT-9-5512 against the vehicle application and compare it with the listed cross-reference 5510399100 before installation.

Quality Assurance

INA positions this component as part of its timing drive repair solutions, focused on correct gear ratios, dependable operation, and reduced maintenance needs in chain and belt drive systems.