Komatsu O-Ring Water Pump 02891-02108

The Komatsu O-Ring Water Pump 02891-02108 is identified in the supplied parts catalog as a COOLING SYSTEM for specific Komatsu diesel engine and equipment configurations. Cataloged engine models include 4D105-3C and 4D105-5H/5J/5T. Listed machine applications include D31A-16, D31P, PL, PLL-16, D31P-16A, D31Q-16, and D31S-16. Use the complete model and serial-number details below to compare this part with the equipment being serviced.

What is 02891-02108 used for?

Part number 02891-02108 is cataloged as a O-Ring Water Pump. It appears in the COOLING SYSTEM parts group. The correct selection depends on the engine model, machine model, and the applicable serial-number range.

Compatible engine models

4D105-3C, 4D105-5H/5J/5T

Engine models with serial-number ranges

4D105-3C (Build 5A) ? 40138-Up | 4D105-5H/5J/5T (Build 5B) ? 102876-152519

Application models without serial numbers

D31A-16, D31P, PL, PLL-16, D31P-16A, D31Q-16, D31S-16, D31A-17, D31E-17, D31P-17, D31P-17A, D31Q-17, D31S-17, GD300-A

Applications with serial-number ranges

D31A-16 S/No. 25001-Up, D31P, PL, PLL-16 S/No. 25001-Up, D31P-16A S/No. 25001-Up, D31Q-16 S/No. 25001-Up, D31S-16 S/No. 25001-Up, D31A-17 S/No. 32001-Up, D31E-17 S/No. 32001-Up, D31P-17 S/No. 32001-Up, D31P-17A S/No. 32001-Up, D31Q-17 S/No. 32001-Up, D31S-17 S/No. 32001-Up, GD300-A S/No. 2001-Up

How do I confirm fitment?

Match 02891-02108 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 02891-02108 fit every listed Komatsu machine?
No. Fitment is limited to the cataloged engine, application, and serial-number combinations. Confirm all identifying information before ordering.