FordPartsGiant.com offers the wholesale prices for genuine 2021 Ford Mustang parts. Parts like Rear Axle, Differential, Drive Axles, Propeller Shaft, Oil Cooler are shipped directly from authorized Ford dealers and backed by the manufacturer's warranty. Parts fit for the following vehicle options. Engine: 4 Cyl 2.3 L GAS, 8 Cyl 5.0 L GAS, 8 Cyl 5.2 L GAS.