There are plenty of parts on your 1979-93 Mustang automatic transmission that can go out. At LatemodelRestoration.com you can find any part you need to get it running like new again. Choose from automatic transmission assemblies, rebuild kits, shifters, block plates, torque converters, oil coolers, dipstick and tubes, flexplates, pans, gaskets, filters, shifts kits, and all of the necessary hardware to hold it together. Choose from stock replacement, upgraded, or high performance parts from brands such as Performance Automatic, TCI, Derale, Ford Racing, B&M, and Motorcraft.