Description
WCFab 1999-2023 GM Billet Coolant Heater Core Firewall Fitting WCF100155
Fits: 2001-2004 Chevy/GMC 6.6L Duramax LB7; 2004.5-2005 Chevy/GMC 6.6L Duramax LLY; 2006-2007 Chevy/GMC 6.6L Duramax LBZ; 2007.5-2010 Chevy/GMC 6.6L Duramax LMM; 2011-2016 Chevy/GMC 6.6L Duramax LML; 2017-2019 Chevy/GMC 6.6L Duramax L5P; 2020-2026 Chevy/GMC 6.6L Duramax L5P
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 and Dorman Part Number 800-409
Also fits:
- 2001-2023 Duramax
- 2002-2005 Cadillac Escalade
- 2002-2005 Chevrolet Avalanche
- 2007-2010 Chevrolet Express
- 2004-2009 Chevrolet Kodiak
- 1999-2013 Chevrolet Silverado 1500
- 2000-2014 Chevrolet Silverado 2500/3500 (Gas)
- 2000-2005 Chevrolet Suburban
- 2000-2004 Chevrolet Tahoe
- 2007-2010 GMC Savana
- 1999-2013 GMC Sierra 1500
- 2000-2014 GMC Sierra 2500/3500 (Gas)
- 2000-2005 GMC Yukon
- 2003-2009 Hummer H2
Lead time (per manufacturer): In Stock. Ships in 3-5 business days.
Wehrli Custom Fabrication (WCFab) — USA made. Part number: WCF100155.
