2023 Paccar PO-18F112C, Truck Tractor, Transmission Assys, Fits to: Peterbilt 579, (Used) 2022 Paccar (AT), TRANSMISSION ASSEMBLY- Model: PO-18F112C, Serial Number: Z0251035, Part Number: TA-H09-098271, Engine: PACCAR MX13, 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# Z0251035, Casting# Z0251035, Truck Year 2023 1XPBDP9X4PD856330