UM14603 Piston---Replaces 743110M91

Replaces number 743110M91

Oil Groove Holes 8 Top, 8 Bottom

Fits: MF 255 Late, MF265 Late, 270, 670, 174-4S, 184-4, 274-4, 50C, 50D, 50E, 50F

After Engine sn 236UA109215L