When replacing the slip clutch gears it is always good to replace the keys if they show wear
The left side is a stamped steel rim center
and 401 IHC dry fertilizer units
This arm will ONLY fit the left side
New Fertilizer Hopper Attachment Base for Farmall 140, 130, Super A, 100, Cub, Super C Tractors, 513999R3 When replacing the slip clutchNew Fertilizer Hopper Unit Base for International and IH Farmall 140, 130, Super A, 100, Cub, Super C, and Other Tractor Models. Replaces Case IH Fertilizer Hopper Base part numbers: 513999R3, 513999R2, 513999R1. This fertilizer hopper base fits most all IHC fertilizer and planter units that use the standard International Harvester (IH) dry fertilizer hopper. USA MADE!!! Usually the 2 mounting bolts that attach this part to the mounting arm are