1988 Ford 4610 Tractor Rearend Ring & Pinion Gear Set C5NN4668F Posted onMay 16, 2024CategoriesfordTagsc5nn4668f, ford, gear, pinion, rearend, ring, tractor Up for sale is a rearend ring and pinion gear set. They came off a 1988 Ford 4610 diesel tractor. They appear to be in good condition.