All of our new parts are aftermarket replacements. Compatible with Ford Tractor(s) 1320, 1520, 1620, 1715, 1720, 1920, 2120, 3415. Compatible with Ford Skid Steer Loader(s) CL35. Replaces Ford OEM nos SBA185086560, SBA185086510, SBA185086410, SBA185086500. Compatible with Gehl Skid Steer Loader(s) SL4610, SL4615. Compatible with New Holland Tractor(s) 1320, 1520, 1530, 1620, 1630, 1715, 1720, 1725, 1920, 1925. Replaces New Holland OEM nos SBA185086410. Compatible with Perkins Engine(s) 103-15, 104-19, 104-22. Replaces Perkins OEM nos 185086560. Replaces JCB OEM nos 71433300, 71433300R. Replaces Prestolite Mfg nos 20513016. Replaces Mitsubishi Mfg nos M008T70071, M002T54083, M002T54085, M002T54091, M002T58981, M002T63371. Mitsubishi Style: Planetary Gear Reduction. Replaces early 11-tooth & 12- tooth OSGR design (Lester 17244). For a Used version of this sku use 464256. All States Ag Parts Item No.