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
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California Residents: Prop 65 Warning
WARNING: Cancer and Reproductive Harm