Komatsu Piston, Pin & Clips 6204-31-2121WP

The Komatsu Piston, Pin & Clips 6204-31-2121WP is identified in the supplied parts catalog as a CYLINDER KIT & COMPONENTS for specific Komatsu diesel engine and equipment configurations. Cataloged engine models include 4D95L-1K-1L and 6D95L-1. Listed machine applications include PC60-3, PC60-5, PC60L-5, PC60U-5, and PW60-3. Use the complete model and serial-number details below to compare this part with the equipment being serviced.

What is 6204-31-2121WP used for?

Part number 6204-31-2121WP is cataloged as a Piston, Pin & Clips. 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

4D95L-1K-1L, 6D95L-1

Engine models with serial-number ranges

4D95L-1K-1L (Build 1B) ? 15548-Up | 6D95L-1 (Build 2A) ? 10001-Up

Application models without serial numbers

PC60-3, PC60-5, PC60L-5, PC60U-5, PW60-3, PC80-3, PC75UU-1, D31E-18, D31P-18, D31P-18A, D31S-18, D37E-2 / P2, PC100-3, PC100L-3, PC120-3, PW150-1, WA100, WA100-3, WA120-1

Applications with serial-number ranges

PC60-3 S/No. 18001-Up, PC60-5 S/No. 20501-Up, PC60L-5 S/No. 7501-Up, PC60U-5 S/No. 4501-Up, PW60-3 S/No. 2001-Up, PC80-3 S/No. 2001-Up, PC75UU-1 S/No. 1001-Up, D31E-18 S/No. 40001-Up, D31P-18 S/No. 40001-Up & 40765-Up, D31P-18A S/No. 40001-Up & 40765-Up, D31S-18 S/No. 40001-Up, D37E-2 / P2 S/No. 1501-2500, PC100-3 S/No. 18001-Up, PC100L-3 S/No. 12001-Up, PC120-3 S/No. 18001-Up, PW150-1 S/No. 1001-Up, WA100 S/No. 10001-UP, WA100-3 S/No. 10001-UP, WA120-1 S/No. 10001-UP

How do I confirm fitment?

Match 6204-31-2121WP 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 6204-31-2121WP fit every listed Komatsu machine?
No. Fitment is limited to the cataloged engine, application, and serial-number combinations. Confirm all identifying information before ordering.