Komatsu Conrod 6138-31-3104

The Komatsu Conrod 6138-31-3104 is identified in the supplied parts catalog as a CONNECTING ROD & RELATED PARTS for specific Komatsu diesel engine and equipment configurations. Cataloged engine models include S6D110-1, SA6D110-1, SA6D110-1C/G, and SA6D110-1N/P/P-B. Listed machine applications include WA350-1, GD615A-1, PC280LC-3, D66S-1, and WA380-1. Use the complete model and serial-number details below to compare this part with the equipment being serviced.

What is 6138-31-3104 used for?

Part number 6138-31-3104 is cataloged as a Conrod. It appears in the CONNECTING ROD & RELATED PARTS parts group. The correct selection depends on the engine model, machine model, and the applicable serial-number range.

Compatible engine models

S6D110-1, SA6D110-1, SA6D110-1C/G, SA6D110-1N/P/P-B

Engine models with serial-number ranges

S6D110-1 (Build 8A) ? 50195-Up | SA6D110-1 (Build 8B) ? 50001-Up | SA6D110-1C/G (Build 8C) ? 10350-Up | SA6D110-1N/P/P-B (Build 8D) ? 50001-Up

Application models without serial numbers

WA350-1, WA350-1, GD615A-1, PC280LC-3, D66S-1, WA380-1, WA380-1, WA400-1, WA420-1, N/K, EG150-3, EG150-5

Applications with serial-number ranges

WA350-1 S/No. 10001-Up, WA350-1 S/No. A11604-Up, GD615A-1 S/No. 50001-Up, PC280LC-3 S/No. 10001-Up, D66S-1 S/No. 1001-Up, WA380-1 S/No. 10001-Up, WA380-1 S/No. A20012-Up, WA400-1 S/No. 10001-Up, WA420-1 S/No. 10001-Up

How do I confirm fitment?

Match 6138-31-3104 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 6138-31-3104 fit every listed Komatsu machine?
No. Fitment is limited to the cataloged engine, application, and serial-number combinations. Confirm all identifying information before ordering.