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Wehrli Custom Fabrication

Wehrli Custom Fabrication GM Billet Coolant Heater Core Firewall Fitting WCF100155 | 1999-2023 Duramax LB7,LLY,LBZ,LMM,LML,L5P

Wehrli Custom Fabrication GM Billet Coolant Heater Core Firewall Fitting WCF100155 | 1999-2023 Duramax LB7,LLY,LBZ,LMM,LML,L5P

WCF100155

$41.00 USD

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While many of our products are stocked in our warehouse, inventory levels can change quickly. If you need to confirm availability before placing your order, please call or text 970-778-0792.

Billet Aluminum GM Coolant Heater Core Firewall Fitting

The factory plastic GM Coolant Heater Core Firewall Fitting is a well-known failure point on Duramax trucks and many other GM vehicles. Our Made in the USA, billet aluminum direct-fit replacement is far more resistant to heat and vibration, helping to prevent leaks and keep your cooling system reliable. This upgrade installs easily and provides long-lasting durability compared to the stock plastic fitting.

Replaces:
GM/AC Delco Part Number 15032062
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
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