Heater Gasket

This heater gasket seals the heater core tubes where they pass through the firewall or cowl into the heater box. Made from fully molded rubber, it ensures a tight, leak-free fit preventing heat loss and protecting your firewall from moisture and fumes. It replaces the original factory gasket #9770746 to keep your vintage Pontiac heater system working efficiently.

Installation is straightforward: remove the old gasket from the firewall opening, align this gasket with the heater core tubes, and press it firmly into place before reinstalling the heater box. This simple replacement helps maintain cabin warmth and comfort during colder weather.

Please check the Matching Vehicles tab to confirm compatibility with your Pontiac model.