2000 Meritor/Rockwell Other, Truck Delivery, Rear Rears (Tandem Rear or Single), Fits to: Peterbilt 379, (Used) 2000 Peterbilt 379, COMPLETE REAR DIFFERENTIAL GEARS ONLY- Serial Number: KNH98361286, Make: Meritor/Rockwell, Model: B3121H1651, Capacity: 23,000Lbs, Ratio: 3.26, Hub Bolts: 10, Brake Type: Drum, For more information about this item, give us a call. We ship Worldwide! (CRG HEAVY TRUCK PARTS) 929 W PULASKI HWY, ELKTON, MD 21921, Ratio 3.26, Serial# KNH98361286, Casting# KNH98361286 1NP5X4EX5YD549916