Komatsu Nozzle Piston Cooling 6745-21-1610

The Komatsu Nozzle Piston Cooling 6745-21-1610 is identified in the supplied parts catalog as a CYLINDER BLOCK & COMPONENTS for specific Komatsu diesel engine and equipment configurations. Cataloged engine models include SAA6D114E-3. Listed machine applications include PC300-7E0 (ecot3), PC350-7E0 (ecot3), PC300LC-7E0 (ecot3), PC350LC-7E0 (ecot3), and PC340LC-7K-E0. Use the complete model and serial-number details below to compare this part with the equipment being serviced.

What is 6745-21-1610 used for?

Part number 6745-21-1610 is cataloged as a Nozzle Piston Cooling. 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

SAA6D114E-3

Engine models with serial-number ranges

SAA6D114E-3 (Build 9H) ? 26850001-Up

Application models without serial numbers

PC300-7E0 (ecot3), PC350-7E0 (ecot3), PC300LC-7E0 (ecot3), PC350LC-7E0 (ecot3), PC340LC-7K-E0, PC340NLC-7K-E0, D65EX-16/D65PX-16/D65WX-16, WA430-6

Applications with serial-number ranges

PC300-7E0 S/No. 50001 – UP (ecot3), PC350-7E0 S/No. 30001 – UP (ecot3), PC300LC-7E0 S/No. 50001 – UP (ecot3), PC350LC-7E0 S/No. 30001 – UP (ecot3), PC340LC-7K-E0 S/No. K45001 – UP, PC340NLC-7K-E0 S/No. K45001 – UP

How do I confirm fitment?

Match 6745-21-1610 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 6745-21-1610 fit every listed Komatsu machine?
No. Fitment is limited to the cataloged engine, application, and serial-number combinations. Confirm all identifying information before ordering.