Designed to open at 160 degrees every time, regardless of engine rpm, and it's high-flow design and brass and copper construction eliminate the damaging effects of cycling when you're stuck in stop-and-go traffic. It includes the rubber gasket and has a pressure relief valve.

Manufacturer installation notes

This thermostat is compatible with most 2004-2008 LS based engines except for 2007-up new chassis CK trucks and SUVs which had a new design water pump that uses a slightly taller thermostat. You can identify the new style thermostat by gasket diameter it is 2.34 inch, the earlier style is 2.28 inch.

Manufacturer-listed applications

Match the engine, body, trim and installation requirements. All qualifications shown for an application apply together. Where this part requires a modified or aftermarket assembly, the vehicle listing alone does not confirm compatibility with factory equipment.

Vehicle	Configuration and qualifications
2003–2006 Cadillac Escalade ESV 2002–2006 Cadillac Escalade EXT 2002–2006 Cadillac Escalade 2005–2006 Chevrolet SSR 2005–2007 Chevrolet Corvette 2003–2007 Chevrolet Express 2500 2003–2007 Chevrolet Express 3500 2005 Chevrolet Silverado 1500 HD 1999–2004 Chevrolet Silverado 2500 2001–2005 Chevrolet Silverado 2500 HD 2001–2005 Chevrolet Silverado 3500 2000–2001 Chevrolet Suburban 2500 2003–2007 GMC Savana 2500 2003–2007 GMC Savana 3500 2004 GMC Sierra 1500 2002–2004 GMC Sierra 2500 2002–2005 GMC Sierra 2500 HD 2002–2005 GMC Sierra 3500 2003–2007 Hummer H2	Engine: 6.0L V8 Quantity: 1 Submodel: Base Engine displacement (cu in): 364 Application notes: Only fits 1997-2003 with Mr. Gasket Water Neck
2007 Cadillac Escalade ESV 2007 Cadillac Escalade EXT 2007 Cadillac Escalade 2008 Chevrolet Corvette	Engine: 6.2L V8 Quantity: 1 Submodel: Base Engine displacement (cu in): 376 Application notes: Only fits 1997-2003 with Mr. Gasket Water Neck
2004–2005 Cadillac CTS	Engine: 5.7L V8 Quantity: 1 Submodel: V Engine displacement (cu in): 346 Application notes: Only fits 1997-2003 with Mr. Gasket Water Neck
2006–2007 Cadillac CTS	Engine: 6.0L V8 Quantity: 1 Submodel: V Engine displacement (cu in): 364 Application notes: Only fits 1997-2003 with Mr. Gasket Water Neck
2002–2005 Cadillac Escalade 2007 Chevrolet Cheyenne 2003–2004 Chevrolet SSR 2007 Chevrolet Avalanche 2002–2006 Chevrolet Avalanche 1500 2003–2007 Chevrolet Express 1500 2003–2005 Chevrolet Express 2500 2003–2007 Chevrolet Express 3500 1999–2005, 2007 Chevrolet Silverado 1500 1999–2000, 2003–2007 Chevrolet Silverado 2500 2000–2001, 2003–2007 Chevrolet Suburban 1500 2000–2001, 2006–2007 Chevrolet Tahoe 2003–2006 Chevrolet Sonora 2003–2007 GMC Savana 1500 2003–2005 GMC Savana 2500 2002–2005 GMC Sierra 1500 2007 GMC Yukon 2007 GMC Sierra	Engine: 5.3L V8 Quantity: 1 Submodel: Base Engine displacement (cu in): 325 Application notes: Only fits 1997-2003 with Mr. Gasket Water Neck
2003–2006 Chevrolet Trailblazer EXT 2007 Chevrolet Silverado 1500 Classic 2007 Chevrolet Avalanche 2002, 2005–2006 Chevrolet Avalanche 1500 2003–2007 Chevrolet Express 1500 2003–2005 Chevrolet Express 2500 2006–2007 Chevrolet Trailblazer 1999–2006 Chevrolet Silverado 1500 1999–2000 Chevrolet Silverado 2500 2000–2007 Chevrolet Suburban 1500 2000–2007 Chevrolet Tahoe 2006–2007 GMC Savana 1500	Engine: 5.3L V8 Quantity: 1 Submodel: LS Engine displacement (cu in): 325 Application notes: Only fits 1997-2003 with Mr. Gasket Water Neck
2003–2006 Chevrolet Trailblazer EXT 2007 Chevrolet Silverado 1500 Classic 2007 Chevrolet Avalanche 2002, 2005–2006 Chevrolet Avalanche 1500 2006–2007 Chevrolet Express 1500 2006–2007 Chevrolet Trailblazer 1999–2007 Chevrolet Silverado 1500 1999–2000 Chevrolet Silverado 2500 2000–2007 Chevrolet Suburban 1500 2000–2007 Chevrolet Tahoe 2006–2007 GMC Savana 1500	Engine: 5.3L V8 Quantity: 1 Submodel: LT Engine displacement (cu in): 325 Application notes: Only fits 1997-2003 with Mr. Gasket Water Neck
2003–2004 Chevrolet Trailblazer EXT 2002–2003 Chevrolet Avalanche 1500	Engine: 5.3L V8 Quantity: 1 Submodel: North Face Engine displacement (cu in): 325 Application notes: Only fits 1997-2003 with Mr. Gasket Water Neck
2007 Chevrolet Silverado 1500 Classic 2003–2006 Chevrolet Express 2500 2003–2005 Chevrolet Express 3500 1999–2006 Chevrolet Silverado 1500 2000–2007 Chevrolet Tahoe	Engine: 4.8L V8 Quantity: 1 Submodel: LS Engine displacement (cu in): 294 Application notes: Only fits 1997-2003 with Mr. Gasket Water Neck
2007 Chevrolet Silverado 1500 Classic 2002–2004, 2006–2007 Chevrolet Silverado 1500 2007 GMC Sierra 1500 Classic 2002–2007 GMC Sierra 1500	Engine: 5.3L V8 Quantity: 1 Submodel: WT Engine displacement (cu in): 325 Application notes: Only fits 1997-2003 with Mr. Gasket Water Neck
2007 Chevrolet Silverado 1500 Classic 2002–2004, 2006–2007 Chevrolet Silverado 1500 2007 GMC Sierra 1500 Classic 2002–2007 GMC Sierra 1500	Engine: 4.8L V8 Quantity: 1 Submodel: WT Engine displacement (cu in): 294 Application notes: Only fits 1997-2003 with Mr. Gasket Water Neck
2007 Chevrolet Silverado 1500 Classic 2004–2006 Chevrolet Silverado 1500 2007 GMC Sierra 1500 Classic 2005–2006 GMC Sierra 1500	Engine: 5.3L V8 Quantity: 1 Submodel: Hybrid Engine displacement (cu in): 325 Application notes: Only fits 1997-2003 with Mr. Gasket Water Neck
2007 Chevrolet Silverado 1500 Classic 2006 Chevrolet Express 2500 1999–2007 Chevrolet Silverado 1500 2000–2004 Chevrolet Tahoe	Engine: 4.8L V8 Quantity: 1 Submodel: LT Engine displacement (cu in): 294 Application notes: Only fits 1997-2003 with Mr. Gasket Water Neck
2007 Chevrolet Silverado 1500 Classic 2007 Chevrolet Silverado 2500 HD Classic 2007 Chevrolet Silverado 3500 Classic 2007 Chevrolet Silverado 1500 HD Classic 2007 Chevrolet Avalanche 2006–2007 Chevrolet Express 2500 2006–2007 Chevrolet Express 3500 2004–2007 Chevrolet Silverado 1500 2001–2003, 2005–2006 Chevrolet Silverado 1500 HD 1999–2004 Chevrolet Silverado 2500 2001–2007 Chevrolet Silverado 2500 HD 2001–2006 Chevrolet Silverado 3500 2007 Chevrolet Suburban 1500 2000–2007 Chevrolet Suburban 2500 2007 Chevrolet Silverado 3500 HD 2007 GMC Savana 2500 2006–2007 GMC Savana 3500	Engine: 6.0L V8 Quantity: 1 Submodel: LT Engine displacement (cu in): 364 Application notes: Only fits 1997-2003 with Mr. Gasket Water Neck
2007 Chevrolet Silverado 1500 Classic 2006–2007 Chevrolet Trailblazer 2003–2006 Chevrolet Silverado 1500	Engine: 6.0L V8 Quantity: 1 Submodel: SS Engine displacement (cu in): 364 Application notes: Only fits 1997-2003 with Mr. Gasket Water Neck
2007 Chevrolet Silverado 2500 HD Classic 2007 Chevrolet Silverado 3500 Classic 2003–2007 Chevrolet Express 2500 2003–2007 Chevrolet Express 3500 2004–2005 Chevrolet Silverado 1500 2001–2003, 2005 Chevrolet Silverado 1500 HD 1999–2004 Chevrolet Silverado 2500 2001–2006 Chevrolet Silverado 2500 HD 2001–2006 Chevrolet Silverado 3500 2000–2007 Chevrolet Suburban 2500 2007 GMC Savana 2500 2006–2007 GMC Savana 3500	Engine: 6.0L V8 Quantity: 1 Submodel: LS Engine displacement (cu in): 364 Application notes: Only fits 1997-2003 with Mr. Gasket Water Neck
2007 Chevrolet Silverado 2500 HD Classic 2007 Chevrolet Silverado 3500 Classic 2004 Chevrolet Silverado 2500 2003–2007 Chevrolet Silverado 2500 HD 2004, 2006 Chevrolet Silverado 3500 2007 Chevrolet Silverado 3500 HD 2007 GMC Sierra 2500 HD Classic 2007 GMC Sierra 3500 Classic 2004 GMC Sierra 1500 2003–2004 GMC Sierra 2500 2003–2007 GMC Sierra 2500 HD 2004–2006 GMC Sierra 3500 2007 GMC Sierra 3500 HD	Engine: 6.0L V8 Quantity: 1 Submodel: WT Engine displacement (cu in): 364 Application notes: Only fits 1997-2003 with Mr. Gasket Water Neck
2007 Chevrolet Avalanche 2007 Chevrolet Silverado 1500 2007 Chevrolet Silverado 2500 HD 2006–2007 Chevrolet Suburban 1500 2007 Chevrolet Suburban 2500 2007 Chevrolet Silverado 3500 HD	Engine: 6.0L V8 Quantity: 1 Submodel: LTZ Engine displacement (cu in): 364 Application notes: Only fits 1997-2003 with Mr. Gasket Water Neck
2007 Chevrolet Avalanche 2007 Chevrolet Silverado 1500 2007 Chevrolet Suburban 1500 2007 Chevrolet Tahoe	Engine: 5.3L V8 Quantity: 1 Submodel: LTZ Engine displacement (cu in): 325 Application notes: Only fits 1997-2003 with Mr. Gasket Water Neck
2002–2006 Chevrolet Avalanche 1500 2003–2006 Chevrolet Tahoe	Engine: 5.3L V8 Quantity: 1 Submodel: Z71 Engine displacement (cu in): 325 Application notes: Only fits 1997-2003 with Mr. Gasket Water Neck
2002–2003 Chevrolet Avalanche 1500	Engine: 5.3L V8 Quantity: 1 Submodel: On Road Edition Engine displacement (cu in): 325 Application notes: Only fits 1997-2003 with Mr. Gasket Water Neck
2003 Chevrolet Avalanche 1500	Engine: 5.3L V8 Quantity: 1 Submodel: WBH Engine displacement (cu in): 325 Application notes: Only fits 1997-2003 with Mr. Gasket Water Neck
2004–2006 Chevrolet Avalanche 1500	Engine: 5.3L V8 Quantity: 1 Submodel: Z66 Engine displacement (cu in): 325 Application notes: Only fits 1997-2003 with Mr. Gasket Water Neck
1998–2002 Chevrolet Camaro	Engine: 5.7L V8 Quantity: 1 Submodel: Z28 Engine displacement (cu in): 350 Application notes: Only fits 1997-2003 with Mr. Gasket Water Neck
1998–2002 Chevrolet Camaro	Engine: 5.7L V8 Quantity: 1 Submodel: Z28 SS Engine displacement (cu in): 350 Application notes: Only fits 1997-2003 with Mr. Gasket Water Neck
1997–2004 Chevrolet Corvette 2004 Pontiac GTO	Engine: 5.7L V8 Quantity: 1 Submodel: Base Engine displacement (cu in): 350 Application notes: Only fits 1997-2003 with Mr. Gasket Water Neck
1998 Chevrolet Corvette	Engine: 5.7L V8 Quantity: 1 Submodel: Indianapolis 500 Pace Car Engine displacement (cu in): 350 Application notes: Only fits 1997-2003 with Mr. Gasket Water Neck
2001–2004 Chevrolet Corvette	Engine: 5.7L V8 Quantity: 1 Submodel: Z06 Engine displacement (cu in): 350 Application notes: Only fits 1997-2003 with Mr. Gasket Water Neck
2003 Chevrolet Corvette	Engine: 5.7L V8 Quantity: 1 Submodel: 50th Anniversary Edition Pace Car Engine displacement (cu in): 350 Application notes: Only fits 1997-2003 with Mr. Gasket Water Neck
2003 Chevrolet Corvette	Engine: 5.7L V8 Quantity: 1 Submodel: 50th Anniversary Edition Engine displacement (cu in): 350 Application notes: Only fits 1997-2003 with Mr. Gasket Water Neck
2006–2008 Chevrolet Corvette	Engine: 7.0L V8 Quantity: 1 Submodel: Z06 Engine displacement (cu in): 427 Application notes: Only fits 1997-2003 with Mr. Gasket Water Neck
2008 Chevrolet Corvette	Engine: 7.0L V8 Quantity: 1 Submodel: 427 Limited Edition Z06 Engine displacement (cu in): 427 Application notes: Only fits 1997-2003 with Mr. Gasket Water Neck
2003–2007 Chevrolet Express 2500 2003–2007 Chevrolet Express 3500 1999–2005 Chevrolet Silverado 1500 2006–2007 Chevrolet Silverado 2500 2000–2001, 2006 Chevrolet Tahoe 2003–2007 GMC Savana 2500 2003–2007 GMC Savana 3500 2002–2005 GMC Sierra 1500	Engine: 4.8L V8 Quantity: 1 Submodel: Base Engine displacement (cu in): 294 Application notes: Only fits 1997-2003 with Mr. Gasket Water Neck
2006–2007 Chevrolet Impala 2006–2007 Chevrolet Monte Carlo	Engine: 5.3L V8 Quantity: 1 Submodel: SS Engine displacement (cu in): 325 Application notes: Only fits 1997-2003 with Mr. Gasket Water Neck
2001–2002, 2007 Chevrolet Silverado 2500	Engine: 5.3L V8 Quantity: 1 Submodel: Cheyenne Engine displacement (cu in): 325 Application notes: Only fits 1997-2003 with Mr. Gasket Water Neck
2003–2005 Chevrolet Silverado 2500	Engine: 5.3L V8 Quantity: 1 Submodel: 400 SS Engine displacement (cu in): 325 Application notes: Only fits 1997-2003 with Mr. Gasket Water Neck
2003–2004 Chevrolet Tahoe	Engine: 4.8L V8 Quantity: 1 Submodel: Z71 Engine displacement (cu in): 294 Application notes: Only fits 1997-2003 with Mr. Gasket Water Neck
2004–2005 GMC Envoy XUV 2003–2005 GMC Envoy XL 2007 GMC Sierra 1500 Classic 1999–2007 GMC Sierra 1500 1999–2000 GMC Sierra 2500 2000–2007 GMC Yukon 2000–2007 GMC Yukon XL 1500	Engine: 5.3L V8 Quantity: 1 Submodel: SLT Engine displacement (cu in): 325 Application notes: Only fits 1997-2003 with Mr. Gasket Water Neck
2004–2005 GMC Envoy XUV 2003–2005 GMC Envoy XL 2007 GMC Sierra 1500 Classic 2003–2005 GMC Savana 1500 2003–2005 GMC Savana 2500 1999–2007 GMC Sierra 1500 1999–2000 GMC Sierra 2500 2000–2007 GMC Yukon 2000–2007 GMC Yukon XL 1500	Engine: 5.3L V8 Quantity: 1 Submodel: SLE Engine displacement (cu in): 325 Application notes: Only fits 1997-2003 with Mr. Gasket Water Neck
2005–2006 GMC Envoy XL 2005–2007 GMC Envoy	Engine: 5.3L V8 Quantity: 1 Submodel: Denali Engine displacement (cu in): 325 Application notes: Only fits 1997-2003 with Mr. Gasket Water Neck
2007 GMC Sierra 1500 Classic 2007 GMC Sierra 2500 HD Classic 2007 GMC Sierra 3500 Classic 2007 GMC Sierra 1500 HD Classic 2004–2007 GMC Sierra 1500 2001–2003, 2005–2006 GMC Sierra 1500 HD 1999–2004 GMC Sierra 2500 2001–2007 GMC Sierra 2500 HD 2001–2006 GMC Sierra 3500 2007 GMC Yukon XL 1500 2000–2007 GMC Yukon XL 2500 2007 GMC Sierra 3500 HD	Engine: 6.0L V8 Quantity: 1 Submodel: SLT Engine displacement (cu in): 364 Application notes: Only fits 1997-2003 with Mr. Gasket Water Neck
2007 GMC Sierra 1500 Classic 2003–2005 GMC Savana 2500 2003–2005 GMC Savana 3500 1999–2007 GMC Sierra 1500 2000–2007 GMC Yukon	Engine: 4.8L V8 Quantity: 1 Submodel: SLE Engine displacement (cu in): 294 Application notes: Only fits 1997-2003 with Mr. Gasket Water Neck
2007 GMC Sierra 1500 Classic 2002–2006 GMC Sierra 1500 2001–2006 GMC Yukon 2001–2006 GMC Yukon XL 1500	Engine: 6.0L V8 Quantity: 1 Submodel: Denali Engine displacement (cu in): 364 Application notes: Only fits 1997-2003 with Mr. Gasket Water Neck
2007 GMC Sierra 1500 Classic 2007 GMC Sierra 2500 HD Classic 2007 GMC Sierra 3500 Classic 2007 GMC Sierra 1500 HD Classic 2003–2005 GMC Savana 2500 2003–2005 GMC Savana 3500 2004–2007 GMC Sierra 1500 2001–2003, 2005–2006 GMC Sierra 1500 HD 1999–2004 GMC Sierra 2500 2001–2007 GMC Sierra 2500 HD 2001–2006 GMC Sierra 3500 2007 GMC Yukon XL 1500 2000–2007 GMC Yukon XL 2500 2007 GMC Sierra 3500 HD	Engine: 6.0L V8 Quantity: 1 Submodel: SLE Engine displacement (cu in): 364 Application notes: Only fits 1997-2003 with Mr. Gasket Water Neck
2007 GMC Sierra 1500 Classic 1999–2003, 2006 GMC Sierra 1500 2006 GMC Yukon	Engine: 4.8L V8 Quantity: 1 Submodel: SL Engine displacement (cu in): 294 Application notes: Only fits 1997-2003 with Mr. Gasket Water Neck
2007 GMC Sierra 1500 Classic 1999–2003, 2006 GMC Sierra 1500 1999–2000 GMC Sierra 2500 2006 GMC Yukon 2006 GMC Yukon XL 1500	Engine: 5.3L V8 Quantity: 1 Submodel: SL Engine displacement (cu in): 325 Application notes: Only fits 1997-2003 with Mr. Gasket Water Neck
2007 GMC Sierra 2500 HD Classic 2007 GMC Sierra 3500 Classic 1999–2002 GMC Sierra 2500 2001–2002, 2006 GMC Sierra 2500 HD 2001–2002, 2006 GMC Sierra 3500	Engine: 6.0L V8 Quantity: 1 Submodel: SL Engine displacement (cu in): 364 Application notes: Only fits 1997-2003 with Mr. Gasket Water Neck
1999–2004 GMC Sierra 1500 2000–2005 GMC Yukon	Engine: 4.8L V8 Quantity: 1 Submodel: SLT Engine displacement (cu in): 294 Application notes: Only fits 1997-2003 with Mr. Gasket Water Neck
2001 GMC Sierra 1500	Engine: 6.0L V8 Quantity: 1 Submodel: C3 Engine displacement (cu in): 364 Application notes: Only fits 1997-2003 with Mr. Gasket Water Neck
2002 GMC Sierra 1500	Engine: 4.8L V8 Quantity: 1 Submodel: HT Engine displacement (cu in): 294 Application notes: Only fits 1997-2003 with Mr. Gasket Water Neck
2002 GMC Sierra 1500	Engine: 5.3L V8 Quantity: 1 Submodel: HT Engine displacement (cu in): 325 Application notes: Only fits 1997-2003 with Mr. Gasket Water Neck
2007 GMC Sierra 1500 2007 GMC Yukon 2007 GMC Yukon XL 1500	Engine: 6.2L V8 Quantity: 1 Submodel: Denali Engine displacement (cu in): 376 Application notes: Only fits 1997-2003 with Mr. Gasket Water Neck
1998–2002 Pontiac Firebird	Engine: 5.7L V8 Quantity: 1 Submodel: Formula Engine displacement (cu in): 350 Application notes: Only fits 1997-2003 with Mr. Gasket Water Neck
1998–2002 Pontiac Firebird	Engine: 5.7L V8 Quantity: 1 Submodel: Trans Am Engine displacement (cu in): 350 Application notes: Only fits 1997-2003 with Mr. Gasket Water Neck
2006–2007 Pontiac Grand Prix	Engine: 5.3L V8 Quantity: 1 Submodel: GXP Engine displacement (cu in): 325 Application notes: Only fits 1997-2003 with Mr. Gasket Water Neck
2008 Pontiac G8	Engine: 6.0L V8 Quantity: 1 Submodel: GT Engine displacement (cu in): 364 Application notes: Only fits 1997-2003 with Mr. Gasket Water Neck
2005–2007 Hummer H2	Engine: 6.0L V8 Quantity: 1 Submodel: Luxury Engine displacement (cu in): 364 Application notes: Only fits 1997-2003 with Mr. Gasket Water Neck
2005–2007 Hummer H2	Engine: 6.0L V8 Quantity: 1 Submodel: Adventure Engine displacement (cu in): 364 Application notes: Only fits 1997-2003 with Mr. Gasket Water Neck
2007 Hummer H2	Engine: 6.0L V8 Quantity: 1 Submodel: Special Edition Engine displacement (cu in): 364 Application notes: Only fits 1997-2003 with Mr. Gasket Water Neck