All of our new parts are aftermarket replacements. Compatible with Minneapolis Moline Tractor(s) A4T 1400, A4T 1600, G704, G705, G706, G707, G708, G900, G950, G955, G1000, G1050, G1350. Compatible with Minneapolis Moline Engine(s) 425 (Gas), 504 (Gas and Diesel). Replaces Minneapolis Moline OEM nos 10R1104. Compatible with Oliver Tractor(s) 2055, 2455. Contains all gaskets necessary to replace the cylinder head – valve seals not included. All States Ag Parts Item No.