Komatsu Ring Set Piston 6204-31-2203

The Komatsu Ring Set Piston 6204-31-2203 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, 4D95L-1AA/1AA-7/1BB/1CC, 4D95L-1FF/GG/W/BW, and 4D95S-1H/1J. 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 6204-31-2203 used for?

Part number 6204-31-2203 is cataloged as a Ring Set Piston. 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, 4D95L-1AA/1AA-7/1BB/1CC, 4D95L-1FF/GG/W/BW, 4D95S-1H/1J, 6D95L-1, 6D95L-1AF-1

Engine models with serial-number ranges

4D95L-1K-1L (Build 1B) ? 15548-Up | 4D95L-1AA/1AA-7/1BB/1CC (Build 1C) ? 49965-Up | 4D95L-1FF/GG/W/BW (Build 1D) ? 131803-Up | 4D95S-1H/1J (Build 1G) ? 124813-Up | 6D95L-1 (Build 2A) ? 10001-Up | 6D95L-1 (Build 2B) ? 69586-Up | 6D95L-1AF-1 (Build 2C) ? Not Provided

Application models without serial numbers

PC60-3, PC60-5, PC60L-5, PC60U-5, PW60-3, PC80-3, PC75UU-1, PC60-6, PC60L-6, PC70-6, PC90-1, PC60-7, PC60-7B, PC75UU-2, D20P-7A / D20PG-7A, D20PL-7, D21A-7 / D21AG-7 / D21PG-7A, D21QG-7 / S-7, D31E-18, D31P-18, D31P-18A, D31S-18, D37E-2 / P2, PC100-3, PC100L-3, PC120-3, PW150-1, WA100, WA100-3, WA120-1, D31E-20, D31E-20, D31E-20, D31P, PL, PLL-20, D31P-20A, D37E-2 / P2, D37E-5, D37P-5A, GD305A-1A, WA120-3

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, PC60-6 S/No. 28001-Up, PC60L-6 S/No. 8001-Up, PC70-6 S/No. 34101-Up, PC90-1 S/No. 1001-Up, PC60-7 S/No. 45001-Up, PC60-7B S/No. 45001-Up, PC75UU-2 S/No. 5001-Up, D20P-7A / D20PG-7A S/No. 75001-78603, D20PL-7 S/No. 62001-62453, D21A-7 / D21AG-7 / D21PG-7A S/No. 75001-78603, D21QG-7 / S-7 S/No. 61001-61131, 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, D31E-20 S/No. 40087-42000, D31E-20 S/No. 42001-Up, D31E-20 S/No. 40523-Up, D31P, PL, PLL-20 S/No. 45001-Up, D31P-20A S/No. 45001-Up, D37E-2 / P2 S/No. 1501-2500-Up, D37E-5 S/No. 1606-3001-Up & A1924-Up, D37P-5A S/No. 1543-3001-Up & 1649-Up, GD305A-1A S/No. 6734-Up, WA120-3 S/No. 50001-52999

How do I confirm fitment?

Match 6204-31-2203 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 6204-31-2203 fit every listed Komatsu machine?
No. Fitment is limited to the cataloged engine, application, and serial-number combinations. Confirm all identifying information before ordering.