OER Parts offers a wide selection of Heater Parts for your 1976 Oldsmobile Cutlass. OER Parts offers 1976 Oldsmobile Cutlass Blower Motor, 1976 Oldsmobile Cutlass Heater Box, 1976 Oldsmobile Cutlass Heater Control Valves, 1976 Oldsmobile Cutlass Heater Cores. 1976 Oldsmobile Cutlass Hoses and Parts, 1976 Oldsmobile Cutlass Vent and Duct Parts.