2017 Meritor/Rockwell Other, Truck Delivery, Rear Rears (Tandem Rear or Single), Fits to: Volvo VNL, (Used) 2017 Volvo VNL, COMPLETE REAR DIFFERENTIAL GEARS ONLY- Serial Number: FOR03687215, Part Number: 21557190, Make: Meritor/Rockwell, Model: RR20145NFN5243 321, Capacity: 19,000 Lbs, Ratio: 3.21, Hub Bolts: 10, Brake Type: Air 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 3.21, Serial# FOR03687215, Casting# FOR03687215 4V4NC9EHXHN976256