Komatsu Cylinder Head (Bare) 6131-12-1201

The Komatsu Cylinder Head (Bare) 6131-12-1201 is identified in the supplied parts catalog as a CYLINDER HEAD & COMPONENTS for specific Komatsu diesel engine and equipment configurations. Cataloged engine models include S4D105-3. Listed machine applications include D40A-1, D40PL-1, D45A-1, and D45P-1. Use the complete model and serial-number details below to compare this part with the equipment being serviced.

What is 6131-12-1201 used for?

Part number 6131-12-1201 is cataloged as a Cylinder Head (Bare). It appears in the CYLINDER HEAD & COMPONENTS parts group. The correct selection depends on the engine model, machine model, and the applicable serial-number range.

Compatible engine models

S4D105-3

Engine models with serial-number ranges

S4D105-3 (Build 5E) ? 44579-Up

Application models without serial numbers

D40A-1, D40PL-1, D45A-1, D45P-1

Applications with serial-number ranges

D40A-1 S/No. 1501-Up, D40PL-1 S/No. 1501-Up, D45A-1 S/No. 1501-Up, D45P-1 S/No. 1501-Up

How do I confirm fitment?

Match 6131-12-1201 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 6131-12-1201 fit every listed Komatsu machine?
No. Fitment is limited to the cataloged engine, application, and serial-number combinations. Confirm all identifying information before ordering.