One New Aftermarket Replacement Intake and Exhaust Manifold Fits: Fits International Harvester Models: Fits Cub, 154, 184, 185 Note: This manifold is correct Fits Cub with Zenith Carburetor. Does not come with gaskets. Replaces Part Numbers: 251232R1, 405023R2 Models This part fits: 154, 184, 185, CUB, CUB 154, CUB 184, CUB 185, Cub Reference Numbers: 21116R1, 21116R1-A, 251232R1, 251232R1-A, 405023R2, 405023R2-A