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Casting Numbers: R96189, R26540, R26560*, R56919, R56934, RE63451, RE53422
*Please Note: If your casting is R26560 check the number of bolt holes in the rear of the crankshaft. This crankshaft has 6 bolt holes and 1 dowel holes. If your crankshaft has 4 bolt holes and 2 dowel hole you need the early version of this crankshaft (AR26431)
Stroke: 4.750 Rod Journal: 2.9980-2.9990 Main Journal: 3.3715-3.3725