Reproduction of the original heater box seals and gaskets designed for use with 1966-70 Dodge and Plymouth B Body models equipped with factory air conditioning. Deteriorated seals can allow water and other elements to leak into the vehicle. This comprehensive kit will allow the replacement of old and worn-out gaskets helping your heater box work at peak efficiency. Gasket Set Incudes:Instructions with picturesAll internal insulations (both fiberglass and Styrofoam)All internal door charcoal foamsFresh air vent to cowl sealHeater box intake to cowl sealBlower motor to firewall sealHeater core and condenser core tube to firewall seals & drain sealsCaulk misc push nuts and cotter pin etcMade in the USA!.