Stops Loss of Transmission Fluid. Five stepped plugs fit both transmissions and transaxles on most import and domestic cars and pickups. Stepped design prevents slipping out. Adapter 23450 includes side gear centering for Ford Transaxles. Plugs cover a range of 1\" - 2.180\" (25.4mm - 55.37mm) 23410 1 1\"-1.25\" (25.4mm - 31.75mm) 23420 2 1.300\" - 1.550\" (3.02mm - 39.37mm) 23430 3 1.600\" - 1.850\" (40.64mm - 46.99mm) 23440 4 1.925\" - 2.180\" (48.895mm - 55.37mm) 23450 5 For Ford Transaxles