172D 172 C.I.D. 2.8 Liter 4 Cylinder Applications: Industrial Engines: (55-78); Tractors: 801, 901 Series, 1801 Series, 4000 Series, Wheel Loaders: 540 Allis Chalmers

Forging numbers: B9NN6302B EZJL6300BAI

Flange: Flat, No Centering Ring, 6 Bolt Holes, 1 Dowel Hole Snout: Splined, 1 Keyway, Balance Gear installed, Straight, 74 Teeth.