Komatsu Valve Ex 6221-43-4210

The Komatsu Valve Ex 6221-43-4210 is identified in the supplied parts catalog as a CYLINDER HEAD & COMPONENTS for specific Komatsu diesel engine and equipment configurations. Cataloged engine models include SAA6D108E-2A. Listed machine applications include PC300-6, PC300-6Z, PC300LC-6, PC300LC-6Z, and PC340LC-6K. Use the complete model and serial-number details below to compare this part with the equipment being serviced.

What is 6221-43-4210 used for?

Part number 6221-43-4210 is cataloged as a Valve Ex. It appears in the CYLINDER HEAD & COMPONENTS parts group. The correct selection depends on the engine model, machine model, and the applicable serial-number range.

Compatible engine models

SAA6D108E-2A

Engine models with serial-number ranges

SAA6D108E-2A (Build 7C) ? 19030-Up

Application models without serial numbers

PC300-6, PC300-6Z, PC300LC-6, PC300LC-6Z, PC340LC-6K, PC340NLC-6K, PC350-6, PC350LC-6, PC380LC-6K, PC380LC-6K-J

Applications with serial-number ranges

PC300-6 S/No. 30001-Up, PC300-6Z S/No. 30001-Up, PC300LC-6 S/No. 30001-Up, PC300LC-6Z S/No. 30001-Up, PC340LC-6K S/No. 10001-Up, PC340NLC-6K S/No. 10001-Up, PC350-6 S/No. 10001-Up, PC350LC-6 S/No. 10001-Up, PC380LC-6K S/No. K30001-Up, PC380LC-6K-J S/No. 10001-Up

How do I confirm fitment?

Match 6221-43-4210 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 6221-43-4210 fit every listed Komatsu machine?
No. Fitment is limited to the cataloged engine, application, and serial-number combinations. Confirm all identifying information before ordering.