Engine Serial: 158,258 and up
Bore: 3.86 in (98 mm)
Pin Diameter: 1.1878 in (30mm)

Blocks marked: R53230, R53250, R55034, R72973, T32342
Connecting rod marked: RE19733
Piston marked: T23481

Agricultural: 2020, 2120, 2510
Construction: 400, 440, 450, 480

Inframe Kit Includes:
(4) Cylinder Kits (Piston, Liner, Piston Rings, Piston Pin, Pin Retainers)
(4) Rod Bearing Pairs
(1) Main Bearing Set
(1) Head Gasket Set
(1) Oil Pan Gasket
(8) Rod Bolts