WCFAB 1999-2022 GM Billet Coolant Heater Core Firewall Fitting GM 2018 *Note: All size options will

*Note: All size options will come with appropriate sized T-Bolt Constant Tension Clamps

For everyday purposes

(Qty 2) Line for Cylinders 4 and 5 - Replaces GM Part# 97188722

Pro is the new standard with MPVI3

CNC Machined Billet Aluminum Thermostat Upper Housing

WCFAB 1999-2022 GM Billet Coolant Heater Core Firewall Fitting GM 2018 *Note: All size options willReplaces 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 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,