I ordered a new bearing retainer front for my SM420 From Novak. It came with a standard input seal in it, but mine being an older trany the seal will be replaced with a 1 1/8" bore instead of 1 1/4" that the newer trany must have. I machined the left-hand threads back to get a very nice area for the new seal. So my new seal is 1.750 OD X 1.125 ID X .250
Last edited by lumbersawyer; 07/04/2022 8:10 PM.
