HVAC Heater Hose. Location: HEATER TO VALVE, VALVE TO ENGINE, HEATER TO PIPE-1, HEATER TO PIPE, HEATER TO PIPE-2, ENGINE TO VALVE, TEE TO RESERVOIR, HEATER TO PIPE-3, PIPE TO PIPE, RADIATOR SURGE TANK OUTLET, PIPE TO RESERVOIR, PIPE TO INTAKE MANIFOLD, COOLANT RESERVOIR.
