Allison B300, Transmission ECMs, (GOOD USED) Allison B300, TCM Part # 29545538, Model No. A53, e11, 10R022849, Supplier P/N # ATA5301, TCM+CAL ASSY # A53004N1, CIN # 4F004N1003F, Pulled off Mode # B300, Serial # BK5538N302490109, Stock # 4111 | Tested & Inspected!