Home Drive line QSB6.7 QSB6.7 Cummins: 3943449 SKU: CNX-DRV-CUM-0145 Category: Drive line Brand: Cummins Add to Quote Description Cummins: 3943449 Related products Allison transmissionAllison: 23042964RBE CLBT755Allison: 23047965 Carrier AssyAllison: 23016688 CLBT755Allison: 23014057