Fits 2004-2008 GM LS2/LS3/LS6/LS7 and 1997-2003 LS Engines when using Mr. Gasket Water Necks 2670, 2671, and 2672.

Designed to open at 180 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.

Opens sooner than stock at 180 degrees
High flow design for performance applications
Includes rubber o-ring seal/gasket
Incorporates pressure relief valve

Information:

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 of 2.34 inch, the earlier style is 2.28 inch.

Application Summary:

Year	Make/Model
2004-2007	Cadillac CTS
2002-2007	Cadillac Escalade
2003-2007	Cadillac Escalade ESV
2002-2007	Cadillac Escalade EXT
2007	Chevrolet Avalanche
2002-2006	Chevrolet Avalanche 1500
1998-2002	Chevrolet Camaro
2007	Chevrolet Cheyenne
1997-2008	Chevrolet Corvette
2003-2007	Chevrolet Express 1500
2003-2007	Chevrolet Express 2500
2003-2007	Chevrolet Express 3500
2006-2007	Chevrolet Impala
2006-2007	Chevrolet Monte Carlo
1999-2007	Chevrolet Silverado 1500
2007	Chevrolet Silverado 1500 Classic
2001-2003	Chevrolet Silverado 1500 HD
2005-2006	Chevrolet Silverado 1500 HD
2007	Chevrolet Silverado 1500 HD Classic
1999-2007	Chevrolet Silverado 2500
2001-2007	Chevrolet Silverado 2500 HD
2007	Chevrolet Silverado 2500 HD Classic
2001-2006	Chevrolet Silverado 3500
2007	Chevrolet Silverado 3500 Classic
2007	Chevrolet Silverado 3500 HD
2003-2006	Chevrolet Sonora
2003-2006	Chevrolet SSR
2000-2007	Chevrolet Suburban 1500
2000-2007	Chevrolet Suburban 2500
2000-2007	Chevrolet Tahoe
2006-2007	Chevrolet Trailblazer
2003-2006	Chevrolet Trailblazer EXT
2005-2007	GMC Envoy
2003-2006	GMC Envoy XL
2004-2005	GMC Envoy XUV
2003-2007	GMC Savana 1500
2003-2007	GMC Savana 2500
2003-2007	GMC Savana 3500
2007	GMC Sierra
1999-2007	GMC Sierra 1500
2007	GMC Sierra 1500 Classic
2001-2003	GMC Sierra 1500 HD
2005-2006	GMC Sierra 1500 HD
2007	GMC Sierra 1500 HD Classic
1999-2004	GMC Sierra 2500
2001-2007	GMC Sierra 2500 HD
2007	GMC Sierra 2500 HD Classic
2001-2006	GMC Sierra 3500
2007	GMC Sierra 3500 Classic
2007	GMC Sierra 3500 HD
2000-2007	GMC Yukon
2000-2007	GMC Yukon XL 1500
2000-2007	GMC Yukon XL 2500
2003-2007	Hummer H2
1998-2002	Pontiac Firebird
2008	Pontiac G8
2006-2007	Pontiac Grand Prix
2004	Pontiac GTO

Attributes
ASIN	B000CJ138M
Brand	Mr. Gasket, Mr. Gasket
California Proposition 65	WARNING: Cancer and Reproductive Harm - www.P65Warnings.ca.gov
Category	Cooling
Category Filter	Cooling
Clearance Category	Cooling
Country of Origin (Primary)	CN
Emission Code	5, 5
GTIN	00084041017234
Harmonized Tariff Code (Schedule B)	9032100060
Hazardous Material Code	N
Item Weight	0.200 lbs.
Life Cycle Status Code	Available to Order
NAFTA Preference Criterion Code	B
Product Type	Thermostats, Thermostats
SDR Required Flag	N
Sale Category	Cooling
Temperature	180° F
Warning	California Proposition 65, California Proposition 65
Warranty	Limited 90 Day, Manufacturer's Limited 90 Day Warranty
Weight	0.2, 0.2000