2021 Allison 2500RDS, Truck Delivery, Trans Misc Parts, Fits to: Peterbilt 220, (Used) 2020 Allison (AT), TRANSMISSION OIL COOLER- Model: 2500RDS, Serial Number: 6311853558, Part Number: F31-1183 Engine: Paccar PX-7, Reference images for condition For more information about this item, give us a call. We ship worldwide! (CRG HEAVY TRUCK PARTS) 929 W PULASKI HWY, ELKTON, MD 21921, Part# F31-1183, Serial# 6311853558, Truck Year 2021 3BPPHM6X2MF594052