New rotor oil pump inner and outer for CRF450R part number 15021-958-000, fitting models 1980 ATC185A ALL TERRAIN CYCLE (VIN# TB01-2000013 To TB01-2027332) - Oil Pump. 1981 ATC185SA ALL TERRAIN CYCLE (VIN# JH3TB010-BC100008 To JH3TB010-BC144020) - Oil Pump.
