Komatsu Water Pump Gasket 6150-61-1821

The Komatsu Water Pump Gasket 6150-61-1821 is identified in the supplied parts catalog as a COOLING SYSTEM for specific Komatsu diesel engine and equipment configurations. Cataloged engine models include SA6D125-1, SA6D125E-2, SA6D125E-3B-7/8 & SAA6D125E-3, and SA6D140E-3 & SDA6D140E-3. Listed machine applications include D135A-1, D87E-2, PC400LC-6, PC400HD-6, and PC400HD-6LK. Use the complete model and serial-number details below to compare this part with the equipment being serviced.

What is 6150-61-1821 used for?

Part number 6150-61-1821 is cataloged as a Water Pump Gasket. 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

SA6D125-1, SA6D125E-2, SA6D125E-3B-7/8 & SAA6D125E-3, SA6D140E-3 & SDA6D140E-3

Engine models with serial-number ranges

SA6D125-1 (Build 10H) ? Not Provided | SA6D125E-2 (Build 10J) ? Not Provided | SA6D125E-3B-7/8 & SAA6D125E-3 (Build 10L) ? 310001-Up | SA6D140E-3 & SDA6D140E-3 (Build 12D) ? Not Provided

Application models without serial numbers

D135A-1, D87E-2, PC400LC-6, PC400HD-6, PC400HD-6LK, PC400LC-6LK, WA450-3 Avance Plus, WA470-3H Active, WA480-5, PC400LC-7L, WA470-5H, D155AX-5, PC-750-6-AW, HD325-6, PC-750LC-6-AW, HD405-6, PC750LC-6K-01 / SE-6K-01, HM350-1, PC-750SE-6-AW, HM400-1, PC800-6-AW / SE-6-AW 30001-Up, D275AX-5, PC1800-6-T2, PC600-6A-KJ / 6A-W1, WA500-3, PC600-6K, WA500-3H, PC600LC-6A-CA / KJ / W1, WA500-3LK

Applications with serial-number ranges

D135A-1 S/No. 10001-Up, D87E-2 S/No. P090001-Up, PC400LC-6 S/No. A83001-Up, PC400HD-6 S/No. A83001-Up, PC400HD-6LK S/No. A84001-A85000, PC400LC-6LK S/No. A84001-A85000, WA450-3 Avance Plus S/No. A31001-Up, WA470-3H Active S/No. H20942-Up, WA480-5 S/No. H50051-Up, PC400LC-7L S/No. A86001-Up, WA470-5H S/No. 50051-Up, D155AX-5 S/No. 70001-Up, PC-750-6-AW S/No. 11001-Up, HD325-6 S/No. 5001-Up, PC-750LC-6-AW S/No. 11001-Up, HD405-6 S/No. 1001-Up, PC750LC-6K-01 / SE-6K-01 S/No. K30001-Up, HM350-1 S/No. 1001-Up, PC-750SE-6-AW S/No. 11001-Up, HM400-1 S/No. 1001-Up, D275AX-5 S/No. 20001-Up, PC1800-6-T2 S/No. 10001-Up, PC600-6A-KJ / 6A-W1 S/No. 10001-Up, WA500-3 S/No. 50001-Up, PC600-6K S/No. K30001-Up, WA500-3H S/No. 20051-Up, PC600LC-6A-CA / KJ / W1 S/No. 10001-Up, WA500-3LK S/No. 71001-Up

How do I confirm fitment?

Match 6150-61-1821 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 6150-61-1821 fit every listed Komatsu machine?
No. Fitment is limited to the cataloged engine, application, and serial-number combinations. Confirm all identifying information before ordering.