WCFab WC Fab Billet Coolant Heater Core Firewall Fitting, Duramax | 2001 - 2023

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