Komatsu Gasket Rear Cover 6735-21-4191

The Komatsu Gasket Rear Cover 6735-21-4191 is identified in the supplied parts catalog as a GASKET KITS & COMPONENTS for specific Komatsu diesel engine and equipment configurations. Cataloged engine models include SA6D102E-1AC. Listed machine applications include GD555-3C, PC270LC-6, PC290LC-6K, and PC290NLC-6K. Use the complete model and serial-number details below to compare this part with the equipment being serviced.

What is 6735-21-4191 used for?

Part number 6735-21-4191 is cataloged as a Gasket Rear Cover. It appears in the GASKET KITS & COMPONENTS parts group. The correct selection depends on the engine model, machine model, and the applicable serial-number range.

Compatible engine models

SA6D102E-1AC

Engine models with serial-number ranges

SA6D102E-1AC (Build 4D) ? 21288263-Up

Application models without serial numbers

GD555-3C, PC270LC-6, PC290LC-6K, PC290NLC-6K

Applications with serial-number ranges

GD555-3C S/No. 50001-Up, PC270LC-6 S/No. A83001-Up, PC290LC-6K S/No. K30001-Up, PC290NLC-6K S/No. K30001-Up

How do I confirm fitment?

Match 6735-21-4191 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 6735-21-4191 fit every listed Komatsu machine?
No. Fitment is limited to the cataloged engine, application, and serial-number combinations. Confirm all identifying information before ordering.