Komatsu Gear Crankshaft 6112-31-1130

The Komatsu Gear Crankshaft 6112-31-1130 is identified in the supplied parts catalog as a CRANKSHAFT & RELATED PARTS for specific Komatsu diesel engine and equipment configurations. Cataloged engine models include S4D120-11A/B/D/G. Listed machine applications include D55-3. Use the complete model and serial-number details below to compare this part with the equipment being serviced.

What is 6112-31-1130 used for?

Part number 6112-31-1130 is cataloged as a Gear Crankshaft. It appears in the CRANKSHAFT & RELATED PARTS parts group. The correct selection depends on the engine model, machine model, and the applicable serial-number range.

Compatible engine models

S4D120-11A/B/D/G

Engine models with serial-number ranges

S4D120-11A/B/D/G (Build 27B) ? 50006-Up

Application models without serial numbers

D55-3

How do I confirm fitment?

Match 6112-31-1130 to the existing part number and verify the complete engine model, equipment model, and serial number. A shared model name does not confirm compatibility because production changes can affect the required component.

Frequently asked question

Will 6112-31-1130 fit every listed Komatsu machine?
No. Fitment is limited to the cataloged engine, application, and serial-number combinations. Confirm all identifying information before ordering.