2015 HUB PILOT NA, School Bus, Hubs, Fits to: Blue Bird BB Conventional, (Used) 2015 Blue Bird BB Conventional, DIFFERENTIAL HUBS- Side: Passenger Right Side, Make: Spicer, Model: 21060S, Ratio: 5.29, Capacity: 19,000Lbs, Hub Bolts: 10, Brake Type: Disc, 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# TBD, Material Steel, Hub Bolts 10 1BAKFCPH2FF314060