Isuzu 8973581440 Crankshaft Assembly

This crankshaft assembly converts reciprocating piston motion into rotational torque for Isuzu 4BG1 four-cylinder diesel engines. Manufactured from high-strength forged alloy steel, it undergoes precision machining and heat treatment to meet OEM dimensional tolerances and surface finish requirements. The component includes main journals, rod journals, counterweights, and provisions for timing gear and flywheel mounting. Direct OEM replacement for Isuzu part numbers 8973581440, 8973581441, 8973581444, and 8943398950. Compatible with excavator applications including Hitachi ZX120 and EX120-5, John Deere 135C, New Holland EH130 and E135 series, and Kobelco SK135SR and SK200SR series. Verified interchangeability with aftermarket references VI8973581440 and VI8943398950. Designed for heavy-duty construction machinery operating cycles.