Enginetech TT452 Timing Chain Tensioner for 1999-2003 Chevrolet GMC Isuzu Oldsmobile Astro Blazer Bravada Express 1500 4.3L 262ci V6

The Enginetech TT452 is a Timing Chain Tensioner for 1999-2003 Chevrolet, GMC, Isuzu, Oldsmobile 4.3L 262ci V6 engines. This is a tensioner and bracket assembly designed to maintain correct chain tension and prevent slack-related timing deviation.

Important Notes

• Tensioner and bracket.

Vehicle Fitment

• 1999 Chevrolet P30 4.3L 262ci V6 OHV [VIN:W]
• 1999 GMC P3500 4.3L 262ci V6 OHV [VIN:W]
• 1999 Isuzu Hombre 4.3L V6 OHV [VIN:X]
• 1999, 2003 Chevrolet S10 4.3L 262ci V6 OHV [VIN:X]
• 1999, 2003 GMC Sonoma 4.3L 262ci V6 OHV [VIN:X]
• 1999-2001 Chevrolet Astro 4.3L 262ci V6 OHV [VIN:W]
• 1999-2001 Chevrolet Silverado 1500 4.3L 262ci V6
• 1999-2001 GMC Jimmy 4.3L 262ci V6 OHV [VIN:W]
• 1999-2001 GMC Safari 4.3L 262ci V6 OHV [VIN:W]
• 1999-2001 Oldsmobile Bravada 4.3L 262ci V6 OHV [VIN:W]
• 1999-2002 Chevrolet Blazer 4.3L 262ci V6 OHV [VIN:W]
• 1999-2002 Chevrolet Express 1500 4.3L 262ci V6 OHV [VIN:W]
• 1999-2002 Chevrolet Express 2500 4.3L 262ci V6 OHV [VIN:W]
• 1999-2002 Chevrolet S10 4.3L 262ci V6 OHV [VIN:W]
• 1999-2002 GMC Savana 1500 4.3L 262ci V6
• 1999-2002 GMC Savana 2500 4.3L 262ci V6 OHV [VIN:W]
• 1999-2002 GMC Sierra 1500 4.3L 262ci V6 OHV [VIN:W]
• 1999-2002 GMC Sonoma 4.3L 262ci V6 OHV [VIN:W]
• 2002-2003 Chevrolet Astro 4.3L 262ci V6 OHV [VIN:X]
• 2002-2003 Chevrolet Silverado 1500 4.3L 262ci V6 OHV [VIN:X]
• ...and 7 additional applications

Enginetech timing chain tensioners are precision-fit replacement components engineered to maintain correct chain tension throughout the service life of the engine. Built on over 40 years of engine rebuilding expertise, each tensioner is designed around the specific engine family it serves - hydraulic preload, ratchet geometry, and housing dimensions are matched to the tensioner bore and chain system of that exact application. Proper tensioner condition is critical to preventing chain slack, timing deviation, and premature wear on guides and sprockets. Enginetech documents every tensioner with clear application-specific notes so you know exactly what you are receiving and how it applies before the engine is on the stand. Always verify fitment by year, make, model, VIN code, and engine displacement before ordering - multiple tensioner configurations often exist for the same vehicle nameplate.