Komatsu Valve Pressure Relief 6731-61-2151

The Komatsu Valve Pressure Relief 6731-61-2151 is identified in the supplied parts catalog as a LUBRICATING OIL SYSTEM for specific Komatsu diesel engine and equipment configurations. Cataloged engine models include SAA6D114E-2A-A, SAA6D107E-1, and SAA4D107E-1. Listed machine applications include PC300-7-W1, PC300LC-7, PC300LC-7L, PC300LC-7-W1, and PC300HD-7. Use the complete model and serial-number details below to compare this part with the equipment being serviced.

What is 6731-61-2151 used for?

Part number 6731-61-2151 is cataloged as a Valve Pressure Relief. It appears in the LUBRICATING OIL SYSTEM parts group. The correct selection depends on the engine model, machine model, and the applicable serial-number range.

Compatible engine models

SAA6D114E-2A-A, SAA6D107E-1, SAA4D107E-1

Engine models with serial-number ranges

SAA6D114E-2A-A (Build 9D) ? 26800003-Up | SAA6D107E-1 (Build 26A) ? 26500006-Up | SAA4D107E-1 (Build 28A) ? 21720884-Up

Application models without serial numbers

PC300-7-W1, PC300LC-7, PC300LC-7L, PC300LC-7-W1, PC300HD-7, PC300HD-7L, PC340LC-7K, PC350-7-W1, PC350LC-7-W1, WA380-5, WA380-5L, WA400-5, WA450-5L, PC200-7, PC200LC-8, PC210-8, PW140-7/PW148-8/PW160-7E0/PW160-8, PC160LC-8, D39EX-22/D39PX-22, WA200-6, PC200-8E0/PC200LC-8E0, PC190LC/NLC-8, HB205-1/HB215LC-1

Applications with serial-number ranges

PC300-7-W1 S/No. 40001-Up, PC300LC-7 S/No. 40001-Up, PC300LC-7L S/No. A85001-Up, PC300LC-7-W1 S/No. 40001-Up, PC300HD-7 S/No. 40001-Up, PC300HD-7L S/No. A85001-Up, PC340LC-7K S/No. K40001-Up, PC350-7-W1 S/No. 20001-Up, PC350LC-7-W1 S/No. 20001-Up, WA380-5 S/No. 60001-Up, WA380-5L S/No. A52001-Up, WA400-5 S/No. 70001-Up, WA450-5L S/No. A40001-Up

How do I confirm fitment?

Match 6731-61-2151 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 6731-61-2151 fit every listed Komatsu machine?
No. Fitment is limited to the cataloged engine, application, and serial-number combinations. Confirm all identifying information before ordering.