2006 Allison 4000RDS, Truck Tractor, Transmission Assys, Fits to: Mack CXN613, (Used) 2006 Allison, TRANSMISSION ASSEMBLY- Model: 4000RDS, Engine: Mack E7, For more information about this item, give us a call. We ship Worldwide! (CRG HEAVY TRUCK PARTS) 929 W PULASKI HWY ELKTON, MD 21921, Serial# TBD, Casting# TBD, Truck Year 2006 1M1AK05Y46N014511