Komatsu Gear Crankshaft 6271-31-1220

The Komatsu Gear Crankshaft 6271-31-1220 is identified in the supplied parts catalog as a CRANKSHAFT & RELATED PARTS for specific Komatsu diesel engine and equipment configurations. Cataloged engine models include SAA4D95LE-5 and SAA4D95LE-6/A/B. Listed machine applications include PC60-8, PC130-8, PC78US-6, and PC130-7. Use the complete model and serial-number details below to compare this part with the equipment being serviced.

What is 6271-31-1220 used for?

Part number 6271-31-1220 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

SAA4D95LE-5, SAA4D95LE-6/A/B

Engine models with serial-number ranges

SAA4D95LE-5 (Build 1M) ? 50001-Up | SAA4D95LE-6/A/B (Build 1N) ? 70001-Up

Application models without serial numbers

PC60-8, PC130-8, PC78US-6, PC130-7

How do I confirm fitment?

Match 6271-31-1220 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 6271-31-1220 fit every listed Komatsu machine?
No. Fitment is limited to the cataloged engine, application, and serial-number combinations. Confirm all identifying information before ordering.