1040K12MK, 1121039, 12K1039, 12PK2640, 20-3000, 25121039, 25121039HD, 252-0222, 4121040, 45240337, 5121040, K121039, K121039HD, K121039RPM. This part generally fits Peterbilt vehicles and includes models such as 379 with the trims of Base Straight Truck - Long Conventio nal,Base Tractor Truck - Long Conventional.
