2007 Meritor/Rockwell RT46160 P, Truck Delivery, Axle Housings (Rear), Fits to: Western Star 4900 SA, (Used) 2007 Western Star 4900 SA, REAR DIFFERENTIAL HOUSING ONLY- Part Number: 33063B3403G4.30, Serial Number: FOR00364946, Make: Meritor, Model: RT46-160P, Ratio: 4.30, Capacity: 23,000 Lbs, 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# FOR00364946, Casting# FOR00364946, Hub Bolts 10 5KKHALCV17PY58747