Fits: Fordson Dexta & Super Dexta, IMT 539 & 542, Perkins 3.152 & 3.144 Diesel. Engine Valve Train Kit for Perkins 3 cyl. (12) S.41412 Valve Lock Replaces OEM p/n: Intake Valve: 31431261;Exhaust Valve: 0910002.