BMW 64118391363 Heater Radiator

To replace the heater core on E36 models, remove the nut from the connection in the engine compartment. Remove the screws from the left lower instrument trim panel and pry it off. Remove the screw from the pipe connection at the heater core. Remove the heater core mounting nut and remove the heater core. Replace the heater core and the mounting screw. Replace the O-rings on the pipe connection and install the mounting bolts. Install the trim panel and screws. Install the nut on the engine compartment side of the pipe connection. Replace the O-rings on the connection and install the flange and nut. Install the air intake cowl and screws. Replace the electrical duct screws and the intake grill. Install the weather-stripping.