Komatsu Crankshaft C/W Gear 6204-31-1201

The Komatsu Crankshaft C/W Gear 6204-31-1201 is identified in the supplied parts catalog as a CRANKSHAFT & RELATED PARTS for specific Komatsu diesel engine and equipment configurations. Cataloged engine models include 4D95L-W-1, 4D95L-1K-1L, 4D95L-1AA/1AA-7/1BB/1CC, and 4D95L-1FF/GG/W/BW. Listed machine applications include WA40-1, WA70-1, PC60-3, PC60-5, and PC60L-5. Use the complete model and serial-number details below to compare this part with the equipment being serviced.

What is 6204-31-1201 used for?

Part number 6204-31-1201 is cataloged as a Crankshaft C/W Gear. It appears in the CRANKSHAFT & RELATED PARTS parts group. The correct selection depends on the engine model, machine model, and the applicable serial-number range.

Compatible engine models

4D95L-W-1, 4D95L-1K-1L, 4D95L-1AA/1AA-7/1BB/1CC, 4D95L-1FF/GG/W/BW, 4D95L-E-2A, 4D95LE-3-65, S4D95LE-3A-2

Engine models with serial-number ranges

4D95L-W-1 (Build 1A) ? 10001-Up | 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 | 4D95L-E-2A (Build 1E) ? 100005-Up | 4D95LE-3-65 (Build 1G-1) ? Not Provided | S4D95LE-3A-2 (Build 1K) ? 100001-Up

Application models without serial numbers

WA40-1, WA70-1, 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, PC60-7 / PC60-7B, PC75UU-3, PC78US-5, PC78US-6-N, WA65-5 W/CAB, WA70-5, WA80-5 (20Kkm/h), WA80-5 (30Kkm/h), WA80-5, PC78MR-6-N

Applications with serial-number ranges

WA40-1 S/No. 1001-Up, WA70-1 S/No. 10001-Up, 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, PC60-7 / PC60-7B S/No. 45001-Up, PC75UU-3 S/No. 15001-Up, PC78US-5 S/No. 1001-Up, PC78US-6-N S/No. 4001-Up, WA65-5 W/CAB S/No. H50051-Up, WA70-5 S/No. H50051-Up, WA80-5 (20Kkm/h) S/No. H50051-Up, WA80-5 (30Kkm/h) S/No. H50051-Up, WA80-5 S/No. H50051-Up, PC78MR-6-N S/No. 1001-Up

How do I confirm fitment?

Match 6204-31-1201 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 6204-31-1201 fit every listed Komatsu machine?
No. Fitment is limited to the cataloged engine, application, and serial-number combinations. Confirm all identifying information before ordering.