Jeep SR4J & RAD 4 Speed Transmission Rebuild Kit 1976-81 This transmission rebuild kit is for the Jeep SR4J & RAD transmissions only! This transmission has an aluminum case and is cast "1332". The SR4J transmission was used in the Cherokee, Grand Cherokee, Comanche, Wagoneer, Jeepster, Scrambler, Wrangler, and the CJ Series Jeep. This kit comes with all the bearings, seals, gaskets, and a small parts kit (That includes snap rings, thrust washers, needle bearings, etc.)