OER Parts offers a wide selection of Automatic Trans & Components for your 1971 Plymouth Duster. OER Parts offers 1971 Plymouth Duster Complete Transmission, 1971 Plymouth Duster Cooler Lines, 1971 Plymouth Duster Dipsticks & Tubes, 1971 Plymouth Duster Flex Plate, 1971 Plymouth Duster Gaskets, Seals, Filters & Hardware 1971 Plymouth Duster Modulator Valves, 1971 Plymouth Duster Shift Knobs, 1971 Plymouth Duster Shift Linkage, 1971 Plymouth Duster Shifters - OE, 1971 Plymouth Duster Shifters - Performance, 1971 Plymouth Duster Torque Converter & Covers, 1971 Plymouth Duster Transmission Pans, and 1971 Plymouth Duster Vacuum Lines.