Komatsu Idler Gear (LH) 6215-31-6120

The Komatsu Idler Gear (LH) 6215-31-6120 is identified in the supplied parts catalog as a CYLINDER BLOCK & COMPONENTS for specific Komatsu diesel engine and equipment configurations. Cataloged engine models include SDA12V140-1 and SAA12V140E-3. Listed machine applications include D475A-3RP, HD785-7, PC2000, and WA900. Use the complete model and serial-number details below to compare this part with the equipment being serviced.

What is 6215-31-6120 used for?

Part number 6215-31-6120 is cataloged as a Idler Gear (LH). It appears in the CYLINDER BLOCK & COMPONENTS parts group. The correct selection depends on the engine model, machine model, and the applicable serial-number range.

Compatible engine models

SDA12V140-1, SAA12V140E-3

Engine models with serial-number ranges

SDA12V140-1 (Build 13C) ? Not Provided | SAA12V140E-3 (Build 13E) ? Not Provided

Application models without serial numbers

D475A-3RP, HD785-7, PC2000, WA900

Applications with serial-number ranges

D475A-3RP S/No. 10601-Up

How do I confirm fitment?

Match 6215-31-6120 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 6215-31-6120 fit every listed Komatsu machine?
No. Fitment is limited to the cataloged engine, application, and serial-number combinations. Confirm all identifying information before ordering.