MoparPartsGiant.com offers the wholesale prices for genuine 2021 Jeep Gladiator parts. Parts like Receiver Modules, Keys & Key Fob are shipped directly from authorized Mopar dealers and backed by the manufacturer's warranty. Parts fit for the following vehicle options. Engine: 6 Cyl 3.0L Diesel, 6 Cyl 3.6L. Transmission: 6-Speed Manual Transmission, 8-Speed Automatic Transmission.