Komatsu Crankshaft C/W Gear 6110-30-1201

The Komatsu Crankshaft C/W Gear 6110-30-1201 is identified in the supplied parts catalog as a CRANKSHAFT & RELATED PARTS for specific Komatsu diesel engine and equipment configurations. Cataloged engine models include 4D120-11F/G and S4D120-11A/B/D/G. Listed machine applications include GD31-3H, GD37-5H, and D55-3. Use the complete model and serial-number details below to compare this part with the equipment being serviced.

What is 6110-30-1201 used for?

Part number 6110-30-1201 is cataloged as a Crankshaft C/W Gear. 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

4D120-11F/G, S4D120-11A/B/D/G

Engine models with serial-number ranges

4D120-11F/G (Build 27A) ? 50025-Up | S4D120-11A/B/D/G (Build 27B) ? 50006-Up

Application models without serial numbers

GD31-3H, GD37-5H, D55-3

How do I confirm fitment?

Match 6110-30-1201 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 6110-30-1201 fit every listed Komatsu machine?
No. Fitment is limited to the cataloged engine, application, and serial-number combinations. Confirm all identifying information before ordering.