Komatsu Engine Parts

4D84E, 4D95 and 6D125-1 examples

The public references below include bearing CR-18404-00 for 4D84E, piston P-KS001-00 and liner L-KS002-00 for 4D95, and block CB1144 for 6D125-1. They are component examples, not a single engine kit. Confirm piston and liner dimensions independently before combining them in a repair.

Keep machine, engine and part numbers separate

Send the Komatsu equipment model and serial number, complete engine designation and engine serial number, plus each existing part reference. Include engine suffixes and clear identification photos. An equipment name alone cannot establish the engine version or the correct replacement part.

Define machining and supply contents

For the 6D125-1 block, identify casting marks, bore condition and requested included components. For bearings, specify position and repair size; for the 4D95 piston and liner, confirm dimensions, rings, pin and quantity. Machining condition and assembly contents must be agreed in the quotation.

Part reference examples

These public catalogue examples help identify a request. Confirm the engine variant, reference, repair size and quantity before ordering; a catalogue entry does not confirm current availability.

Brand names identify engine applications. They do not imply original-brand goods or authorized dealership.