Komatsu Thrust Metal STD 6742-21-8500

The Komatsu Thrust Metal STD 6742-21-8500 is identified in the supplied parts catalog as a CRANKSHAFT & RELATED PARTS for specific Komatsu diesel engine and equipment configurations. Cataloged engine models include SAA6D114E-2 and SAA6D114E-3. Listed machine applications include WA380-5L, WA380-5, WA380-5-TN, WA380-5-SN, and WA400-5. Use the complete model and serial-number details below to compare this part with the equipment being serviced.

What is 6742-21-8500 used for?

Part number 6742-21-8500 is cataloged as a Thrust Metal STD. It appears in the CRANKSHAFT & RELATED PARTS parts group. The correct selection depends on the engine model, machine model, and the applicable serial-number range.

Compatible engine models

SAA6D114E-2, SAA6D114E-3

Engine models with serial-number ranges

SAA6D114E-2 (Build 9G) ? 26800003-Up | SAA6D114E-3 (Build 9H) ? 26850001-Up

Application models without serial numbers

WA380-5L, WA380-5, WA380-5-TN, WA380-5-SN, WA400-5, 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

WA380-5L S/No. A52001-UP, WA380-5 S/No. 60001-UP, WA380-5-TN S/No. 60001-UP, WA380-5-SN S/No. 60001-UP, WA400-5 S/No. 70001-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 6742-21-8500 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 6742-21-8500 fit every listed Komatsu machine?
No. Fitment is limited to the cataloged engine, application, and serial-number combinations. Confirm all identifying information before ordering.