Komatsu Ring Set Piston 6128-31-2070E

The Komatsu Ring Set Piston 6128-31-2070E is identified in the supplied parts catalog as a CYLINDER KIT & COMPONENTS for specific Komatsu diesel engine and equipment configurations. Cataloged engine models include SA6D155-4. Listed machine applications include D355A-3 and D355A-5. Use the complete model and serial-number details below to compare this part with the equipment being serviced.

What is 6128-31-2070E used for?

Part number 6128-31-2070E is cataloged as a Ring Set Piston. It appears in the CYLINDER KIT & COMPONENTS parts group. The correct selection depends on the engine model, machine model, and the applicable serial-number range.

Compatible engine models

SA6D155-4

Engine models with serial-number ranges

SA6D155-4 (Build 14B) ? Not Provided

Application models without serial numbers

D355A-3, D355A-5

Applications with serial-number ranges

D355A-3 S/No. 1010-Up, D355A-5 S/No. 12622-Up

How do I confirm fitment?

Match 6128-31-2070E 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 6128-31-2070E fit every listed Komatsu machine?
No. Fitment is limited to the cataloged engine, application, and serial-number combinations. Confirm all identifying information before ordering.