Komatsu Gasket Kit Upper 6251-K1-9900

The Komatsu Gasket Kit Upper 6251-K1-9900 is identified in the supplied parts catalog as a GASKET KITS & COMPONENTS for specific Komatsu diesel engine and equipment configurations. Cataloged engine models include SAA6D125E-5A/B/C. Listed machine applications include D85PX-15EO, WA450, WA470, and WA480-6. Use the complete model and serial-number details below to compare this part with the equipment being serviced.

What is 6251-K1-9900 used for?

Part number 6251-K1-9900 is cataloged as a Gasket Kit Upper. It appears in the GASKET KITS & COMPONENTS parts group. The correct selection depends on the engine model, machine model, and the applicable serial-number range.

Compatible engine models

SAA6D125E-5A/B/C

Engine models with serial-number ranges

SAA6D125E-5A/B/C (Build 10M) ? 560004-Up

Application models without serial numbers

D85PX-15EO, WA450, WA470, WA480-6

How do I confirm fitment?

Match 6251-K1-9900 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 6251-K1-9900 fit every listed Komatsu machine?
No. Fitment is limited to the cataloged engine, application, and serial-number combinations. Confirm all identifying information before ordering.