Home Drive line QSB275 QSB275 Cummins: 3991773RX SKU: CNX-DRV-CUM-0188 Category: Drive line Brand: Cummins Add to Quote Description Cummins: 3991773RX Related products CLBT755Allison: 23015339 Terex Alison H8610ARAllison: 23015990 Allison Transmission AT545 (reconditioned)Allison: 23040617 BoltAllison: 179896