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99-03 GM WCFAB 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 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


- Replaces failure prone plastic factory GM Heater Core Firewall Coolant Fitting

- Billet direct-fit replacement with 5/8" barb connection

- More resistant to heat and vibration

- Double O-ring seal

- Clear Anodized finished to resist corrosion

- Replaces GM/AC Delco Part Number 15032062 and Dorman Part Number 800-409


WCFAB: WCF100155

 
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