The heater control valve controls how much hot water gets into the heater. Made of ABS plastic so it will not rust out.
12-31100 Upper Radiator Hose, stock for Early Bronco
12-32200 Lower Radiator Hose, stock for Early Bronco
12-32300 SILICONE HOSE KIT for Early Ford Bronco
12-33100 Upper Radiator Hose for S-belt for Early Bronco