Operation CHARM: Car repair manuals for everyone.

Heater Hose: Description and Operation

The heater hoses are made of rubber hose and metal tube assemblies that are connected together using aluminum clamps that are crimped into place. The aluminum clamps must not be removed. The heater hoses must not be serviced as subassemblies by separating the rubber hoses from the metal tubes. The heater core inlet hose and heater core outlet hose are a single assembly and should be serviced as a single assembly.