Komatsu Liner Seal 6610-21-2240

The Komatsu Liner Seal 6610-21-2240 is identified in the supplied parts catalog as a CYLINDER KIT & COMPONENTS for specific Komatsu diesel engine and equipment configurations. Cataloged engine models include 4D130-1 & S4D130-1 and NH220-C1. Listed machine applications include D50-16, D50A-16, D50F-16, D50P-16, and D53A-16. Use the complete model and serial-number details below to compare this part with the equipment being serviced.

What is 6610-21-2240 used for?

Part number 6610-21-2240 is cataloged as a Liner Seal. It appears in the CYLINDER KIT & COMPONENTS parts group. The correct selection depends on the engine model, machine model, and the applicable serial-number range.

Compatible engine models

4D130-1 & S4D130-1, NH220-C1

Engine models with serial-number ranges

4D130-1 & S4D130-1 (Build 11A) ? 10006-Up | NH220-C1 (Build 18A) ? Not Provided

Application models without serial numbers

D50-16, D50A-16, D50F-16, D50P-16, D53A-16, D53P-16, D53S-16, D53S-17, D57S-1, GD500R-1, D60A-7, D60E-6, D60E-7 / D60-S7, D60P, PL-7, D65A, P-6, D65E-6, D65E-7 / D65P-7 / D65-S7, D65S-6, D68E, P1A, D75S-2, D75S-3, D80A-12, D80E-12, D80P-12, D85A-12, D85E-12, GD605A-2, GD655A-2

Applications with serial-number ranges

D50-16 S/No. 65001-Up, D50A-16 S/No. 65001-Up, D50F-16 S/No. 65001-Up, D50P-16 S/No. 65001-Up, D53A-16 S/No. 65001-Up, D53P-16 S/No. 65001-Up, D53S-16 S/No. 65001-Up, D53S-17 S/No. 80001-Up, D57S-1 S/No. 6501-Up, D60A-7 S/No. 40001-Up, D60E-6 S/No. 20295-Up, D60E-7 / D60-S7 S/No. 40001-Up, D60P, PL-7 S/No. 40001-Up, D65A, P-6 S/No. 20006-Up, D65E-6 S/No. 20295-Up, D65E-7 / D65P-7 / D65-S7 S/No. 40001-Up, D65S-6 S/No. 20006-Up, D68E, P1A S/No. B10001-Up, D75S-2 S/No. 1004-Up, D75S-3 S/No. 7001-Up, D80A-12 S/No. 10001-24999, D80E-12 S/No. 10001-24999, D80P-12 S/No. 10001-24999, D85A-12 S/No. 10001-Up, D85E-12 S/No. 10001-24999, GD605A-2 S/No. 53001-Up & 56001-Up, GD655A-2 S/No. 63001-Up & 66001-Up

How do I confirm fitment?

Match 6610-21-2240 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 6610-21-2240 fit every listed Komatsu machine?
No. Fitment is limited to the cataloged engine, application, and serial-number combinations. Confirm all identifying information before ordering.