Komatsu Water Pump 6743-61-1531

The Komatsu Water Pump 6743-61-1531 is identified in the supplied parts catalog as a COOLING SYSTEM for specific Komatsu diesel engine and equipment configurations. Cataloged engine models include SAA6D114E-2A-A, SAA6D114E-2, and SAA6D114E-3. 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 6743-61-1531 used for?

Part number 6743-61-1531 is cataloged as a Water Pump. It appears in the COOLING 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, SAA6D114E-2, SAA6D114E-3

Engine models with serial-number ranges

SAA6D114E-2A-A (Build 9D) ? 26800003-Up | SAA6D114E-2 (Build 9G) ? 26800003-Up | SAA6D114E-3 (Build 9H) ? 26850001-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, WA380-5-TN, WA380-5-SN, WA400-5L, GD675-3 (FOR N.AMERICA), GD675-3A, CD110R-2, PC300-7E0 (ecot3), PC350-7E0 (ecot3), PC300LC-7E0 (ecot3), PC350LC-7E0 (ecot3), PC340LC-7K-E0, PC340NLC-7K-E0, D65EX-16/D65PX-16/D65WX-16, WA430-6

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, WA380-5-TN S/No. 60001-UP, WA380-5-SN S/No. 60001-UP, WA400-5L S/No. A40001-UP, GD675-3 S/No. 50001-UP (FOR N.AMERICA), GD675-3A S/No. 10001-UP, CD110R-2 S/No. 1501-UP, PC300-7E0 S/No. 50001 – UP (ecot3), PC350-7E0 S/No. 30001 – UP (ecot3), PC300LC-7E0 S/No. 50001 – UP (ecot3), PC350LC-7E0 S/No. 30001 – UP (ecot3), PC340LC-7K-E0 S/No. K45001 – UP, PC340NLC-7K-E0 S/No. K45001 – UP

How do I confirm fitment?

Match 6743-61-1531 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 6743-61-1531 fit every listed Komatsu machine?
No. Fitment is limited to the cataloged engine, application, and serial-number combinations. Confirm all identifying information before ordering.