Description 4 Bolt, Large Spindle Bearing Assembly for Late Model Chopper - Fits Forrest City Do-All and Alloway-Rau Flail Chopper - Imported. This item is a suitable alternative for the following: 851-NANF21031, 3816, WGFZ31IMP, FWG1-15/16R, WGFZ31-IMP, HCFS21031, RCJ1-15/16