Komatsu Piston, Pin & Clips 6738-31-2140

The Komatsu Piston, Pin & Clips 6738-31-2140 is identified in the supplied parts catalog as a CYLINDER KIT & COMPONENTS for specific Komatsu diesel engine and equipment configurations. Cataloged engine models include SAA4D102E-2B and SAA6D102E-2. Listed machine applications include D31EX-21, D31PX-21, D37EX-21, D37PX-21, and D39EX-21. Use the complete model and serial-number details below to compare this part with the equipment being serviced.

What is 6738-31-2140 used for?

Part number 6738-31-2140 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

SAA4D102E-2B, SAA6D102E-2

Engine models with serial-number ranges

SAA4D102E-2B (Build 3F) ? 26277757-Up | SAA6D102E-2 (Build 4E) ? 26474903-Up

Application models without serial numbers

D31EX-21, D31PX-21, D37EX-21, D37PX-21, D39EX-21, D39PX-21, PC160LC-7, PC200-7-W1, PC200LC-7, PC200LC-7B, PC200LC-7L, PC200LC-7-US / W1, PC210-7K, PC210LC-7K, PC210NLC-7K, PC220-7-W1, PC220LC-7, PC220LC-7-W1, PC220LC-7L, PC228US-3-KU, PC228US-3-US-3-W1, PC240LC-7K, PC240NLC-7K, PC270LC-7, PC270LC-7L, PC270LC-7MH, PC290LC-7K, PC290NLC-7K, PW200-7K

Applications with serial-number ranges

D31EX-21 S/No. 50001-Up, D31PX-21 S/No. 50001-Up, D37EX-21 S/No. 50001-Up, D37PX-21 S/No. 50001-Up, D39EX-21 S/No. 1001-Up, D39PX-21 S/No. 1001-Up, PC160LC-7 S/No. 10001-Up, PC200-7-W1 S/No. 200001-Up, PC200LC-7 S/No. 200001-Up, PC200LC-7B S/No. C50001-Up, PC200LC-7L S/No. A86001-Up, PC200LC-7-US / W1 S/No. 200001-Up, PC210-7K S/No. K40001-Up, PC210LC-7K S/No. K40001-Up, PC210NLC-7K S/No. K40001-Up, PC220-7-W1 S/No. 60001-Up, PC220LC-7 S/No. 60001-Up, PC220LC-7-W1 S/No. 60001-Up, PC220LC-7L S/No. A60001-Up, PC228US-3-KU S/No. 20001-Up, PC228US-3-US-3-W1 S/No. 20001-Up, PC240LC-7K S/No. K40001-Up, PC240NLC-7K S/No. K40001-Up, PC270LC-7 S/No. A86001-Up, PC270LC-7L S/No. A86001-Up, PC290LC-7K S/No. K40001-Up, PC290NLC-7K S/No. K40001-Up, PW200-7K S/No. K40001-Up

How do I confirm fitment?

Match 6738-31-2140 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 6738-31-2140 fit every listed Komatsu machine?
No. Fitment is limited to the cataloged engine, application, and serial-number combinations. Confirm all identifying information before ordering.