GMPartsGiant.com offers the wholesale prices for genuine 1985 Oldsmobile Cutlass Supreme Classic parts. Parts like Automatic Transmission Control Valve are shipped directly from authorized GM dealers and backed by the manufacturer's warranty. Parts fit for the following vehicle options. Engine: 6 Cyl 3.0L, 6 Cyl 3.8L, 6 Cyl 4.3L Diesel, 8 Cyl 5.0L, 8 Cyl 5.7L Diesel. Model Code: 2 DOOR, 4 DOOR, BROUGHAM 2 DOOR, BROUGHAM 4 DOOR.