Komatsu Water Pump Gasket Kit 6159-K6-9900

The Komatsu Water Pump Gasket Kit 6159-K6-9900 is identified in the supplied parts catalog as a COOLING SYSTEM for specific Komatsu diesel engine and equipment configurations. Cataloged engine models include SA6D125E-3B-7 & SAA6D125E-3 and SA6D125E-3B-7/8 & SAA6D125E-3. Listed machine applications include D65EX-12-E, WA470-5H, D65P-12-E, WA480-5L, and D65PX-12-E. Use the complete model and serial-number details below to compare this part with the equipment being serviced.

What is 6159-K6-9900 used for?

Part number 6159-K6-9900 is cataloged as a Water Pump Gasket Kit. 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

SA6D125E-3B-7 & SAA6D125E-3, SA6D125E-3B-7/8 & SAA6D125E-3

Engine models with serial-number ranges

SA6D125E-3B-7 & SAA6D125E-3 (Build 10K) ? 310001-Up | SA6D125E-3B-7/8 & SAA6D125E-3 (Build 10L) ? 310001-Up

Application models without serial numbers

D65EX-12-E, WA470-5H, D65P-12-E, WA480-5L, D65PX-12-E, WA480-5-W, D85EX-15, PC400LC-7L, HM300-1, WA450-5L, WA450-5-W, WA480-5

Applications with serial-number ranges

D65EX-12-E S/No. 60942-Up, WA470-5H S/No. 50051-Up, D65P-12-E S/No. 60884-Up, WA480-5L S/No. A37001-Up, D65PX-12-E S/No. 60884-Up, WA480-5-W S/No. 80001-Up, D85EX-15 S/No. 10001-Up, PC400LC-7L S/No. A86001-Up, HM300-1 S/No. 1001-Up, WA450-5L S/No. A36001-Up, WA450-5-W S/No. 70001-Up, WA480-5 S/No. H50051-Up

How do I confirm fitment?

Match 6159-K6-9900 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 6159-K6-9900 fit every listed Komatsu machine?
No. Fitment is limited to the cataloged engine, application, and serial-number combinations. Confirm all identifying information before ordering.