This is a A-373408S O-Ring, Hydraulic Lift Cylinder Piston PN: 373408SMain Description As Following : A-373408S O-Ring, Hydraulic Lift Cylinder Piston P.N: 373408S Used on models w/ 3.75" dia. piston. Replaces: 83416996 FORD , Crossed From: VFE1023 VAPORMATIC , 87554754 GOLD VALUE Found in Section & Models : Hitch & Drawbar Parts > Rockshaft Cylinders and Parts, Ford / New Holland TRACTOR: 5000 (1965-75 W/ 3.75" DIAMETER PISTON), Ford / New Holland TRACTOR: 5600 (1975-81 W/ 3.75" DIAMETER PISTON), Ford / New Holland TRACTOR: 5700 (1975-81 W/ 3.75" DIAMETER PISTON), Ford / New Holland TRACTOR: 6600 (1975-81 W/ 3.75" DIAMETER PISTON), Ford / New Holland TRACTOR: 6700 (1975-81 W/ 3.75" DIAMETER PISTON), Ford / New Holland TRACTOR: 7000 (1965-75 W/ 3.75" DIAMETER PISTON), Ford / New Holland TRACTOR: 7600 (1975-81 W/ 3.75" DIAMETER PISTON), Ford / New Holland TRACTOR: 7700 (1975-81 W/ 3.75" DIAMETER PISTON) Associated Items : New Also A-FO-O-2-5000, A-FO-O-2000, A-FO-P-MAJOR, A-FO-P-234000, A-FO-S-DATA, A-FO-S-ENG158, A-FO-S-2000, A-MNL18259, A-SMFO201, A-SMFO42, A-FO-O-5600, A-FO-P-2600, A-FRM-FO-MID, A-SMFO42, A-FO-P-2600, A-FO-O-5600, A-FO-P-2600, A-FRM-FO-MID, A-SMFO42, A-FO-O-67007700 And : Used on models w/ 3.75" dia. piston. Outside Diameter: 5.85" Width: .21"