Wehrli 99-23 GM Billet Coolant Heater Core Firewall Fitting

The factory plastic GM Coolant Heater Core Firewall Fitting is a common failure point on Duramax trucks and other GM vehicles. Our made in the USA, billet aluminum direct-fit replacement is more resistant to heat and vibration. Prevent leaks with this easy to install upgrade. Replaces GM/AC Delco Part Number 15032062

This Part Fits:

Year	Make	Model	Submodel
2002-2005	Cadillac	Escalade	Base
2002-2005	Chevrolet	Avalanche 1500	Base
2005	Chevrolet	Avalanche 1500	LS
2005	Chevrolet	Avalanche 1500	LT
2002-2003	Chevrolet	Avalanche 1500	North Face
2002-2003	Chevrolet	Avalanche 1500	On Road Edition
2003	Chevrolet	Avalanche 1500	WBH
2004-2005	Chevrolet	Avalanche 1500	Z66
2002-2005	Chevrolet	Avalanche 1500	Z71
2002-2004	Chevrolet	Avalanche 2500	Base
2005	Chevrolet	Avalanche 2500	LS
2005	Chevrolet	Avalanche 2500	LT
2007-2010	Chevrolet	Express 1500	Base
2007-2010	Chevrolet	Express 1500	LS
2007-2010	Chevrolet	Express 1500	LT
2007-2010	Chevrolet	Express 2500	Base
2007-2010	Chevrolet	Express 2500	LS
2007-2010	Chevrolet	Express 2500	LT
2007-2010	Chevrolet	Express 3500	Base
2007-2010	Chevrolet	Express 3500	LS
2007-2010	Chevrolet	Express 3500	LT
1999-2005	Chevrolet	Silverado 1500	Base
2004-2006,2009-2013	Chevrolet	Silverado 1500	Hybrid
1999-2013	Chevrolet	Silverado 1500	LS
1999-2013	Chevrolet	Silverado 1500	LT
2007-2013	Chevrolet	Silverado 1500	LTZ
2003-2006	Chevrolet	Silverado 1500	SS
2002-2013	Chevrolet	Silverado 1500	WT
2010-2013	Chevrolet	Silverado 1500	XFE
2004-2005	Chevrolet	Silverado 1500	Z71 Off-Road
2000-2004	Chevrolet	Silverado 2500	Base
2000-2004	Chevrolet	Silverado 2500	LS
2000-2004	Chevrolet	Silverado 2500	LT
2004	Chevrolet	Silverado 2500	WT
2001-2005	Chevrolet	Silverado 2500 HD	Base
2021-2023	Chevrolet	Silverado 2500 HD	Custom
2015-2023	Chevrolet	Silverado 2500 HD	High Country
2001-2006	Chevrolet	Silverado 2500 HD	LS
2001-2023	Chevrolet	Silverado 2500 HD	LT
2007-2023	Chevrolet	Silverado 2500 HD	LTZ
2003-2023	Chevrolet	Silverado 2500 HD	WT
2007	Chevrolet	Silverado 2500 HD Classic	LS
2007	Chevrolet	Silverado 2500 HD Classic	LT
2007	Chevrolet	Silverado 2500 HD Classic	WT
2001-2005	Chevrolet	Silverado 3500	Base
2001-2006	Chevrolet	Silverado 3500	LS
2001-2006	Chevrolet	Silverado 3500	LT
2004,2006	Chevrolet	Silverado 3500	WT
2007	Chevrolet	Silverado 3500 Classic	LS
2007	Chevrolet	Silverado 3500 Classic	LT
2007	Chevrolet	Silverado 3500 Classic	WT
2015-2023	Chevrolet	Silverado 3500 HD	High Country
2007-2023	Chevrolet	Silverado 3500 HD	LT
2007-2023	Chevrolet	Silverado 3500 HD	LTZ
2007-2023	Chevrolet	Silverado 3500 HD	WT
2000-2001	Chevrolet	Suburban 1500	Base
2000-2005	Chevrolet	Suburban 1500	LS
2000-2005	Chevrolet	Suburban 1500	LT
2002-2005	Chevrolet	Suburban 1500	Z71
2000-2001	Chevrolet	Suburban 2500	Base
2000-2005	Chevrolet	Suburban 2500	LS
2000-2005	Chevrolet	Suburban 2500	LT
2000-2001	Chevrolet	Tahoe	Base
2000	Chevrolet	Tahoe	Limited
2000-2004	Chevrolet	Tahoe	LS
2000-2004	Chevrolet	Tahoe	LT
2000,2002-2004	Chevrolet	Tahoe	Z71
2007-2010	GMC	Savana 1500	Base
2007-2010	GMC	Savana 1500	LS
2007-2010	GMC	Savana 1500	LT
2007-2010	GMC	Savana 2500	Base
2007-2010	GMC	Savana 2500	LS
2007-2010	GMC	Savana 2500	LT
2007-2010	GMC	Savana 3500	Base
2007-2010	GMC	Savana 3500	LS
2007-2010	GMC	Savana 3500	LT
2002-2005	GMC	Sierra 1500	Base
2001	GMC	Sierra 1500	C3
2002-2013	GMC	Sierra 1500	Denali
2002	GMC	Sierra 1500	HT
2005-2006,2009-2013	GMC	Sierra 1500	Hybrid
1999-2003,2006-2013	GMC	Sierra 1500	SL
1999-2013	GMC	Sierra 1500	SLE
1999-2013	GMC	Sierra 1500	SLT
2002-2013	GMC	Sierra 1500	WT
2010-2013	GMC	Sierra 1500	XFE
2020-2023	GMC	Sierra 2500 HD	AT4
2002-2005,2015-2021	GMC	Sierra 2500 HD	Base
2011-2023	GMC	Sierra 2500 HD	Denali
2022-2023	GMC	Sierra 2500 HD	Pro
2001-2002,2006	GMC	Sierra 2500 HD	SL
2001-2023	GMC	Sierra 2500 HD	SLE
2001-2023	GMC	Sierra 2500 HD	SLT
2003-2014	GMC	Sierra 2500 HD	WT
2007	GMC	Sierra 2500 HD Classic	SL
2007	GMC	Sierra 2500 HD Classic	SLE
2007	GMC	Sierra 2500 HD Classic	SLT
2007	GMC	Sierra 2500 HD Classic	WT
2002-2005	GMC	Sierra 3500	Base
2001-2002,2006	GMC	Sierra 3500	SL
2001-2006	GMC	Sierra 3500	SLE
2001-2006	GMC	Sierra 3500	SLT
2004-2006	GMC	Sierra 3500	WT
2007	GMC	Sierra 3500 Classic	SL
2007	GMC	Sierra 3500 Classic	SLE
2007	GMC	Sierra 3500 Classic	SLT
2007	GMC	Sierra 3500 Classic	WT
2020-2023	GMC	Sierra 3500 HD	AT4
2015-2021	GMC	Sierra 3500 HD	Base
2011-2023	GMC	Sierra 3500 HD	Denali
2022-2023	GMC	Sierra 3500 HD	Pro
2007-2023	GMC	Sierra 3500 HD	SLE
2007-2023	GMC	Sierra 3500 HD	SLT
2007-2014	GMC	Sierra 3500 HD	WT
2000-2005	GMC	Yukon	Denali
2000-2005	GMC	Yukon	SLE
2000-2005	GMC	Yukon	SLT
2003-2009	Hummer	H2	Base