Komatsu Excavator Engine

Image	Fits Model	Description	Details	Part #	Price	Product Details
	See Details	4D102	Engine - Long Block (Includes: Oil Pump, Water Pump, Oil Pan, Front Cover, Gasket Set)	KM-4D102-LB-N	From $4,984.00	View Info
	See Details	With 6D102	6D102 NEW Long Block Plus (Includes: Oil Pump, Water Pump, Oil Pan, Front Cover, Gasket Set)	0	KM-6D102-LB-N	Call for Pricing	View Info

New long block engine assemblies for Komatsu excavators powered by 4D102 and 6D102 diesel engines, covering a broad range of Komatsu compact and full-size excavator models across multiple generations.

Fits Models At A Glance

4D102 Powered: PC78US, PC88MR, PC78MR
6D102 Powered: PC200-6, PC200-7, PC210-6, PC210-7, PC220-6, PC220-7, PC228US, PC240-6

Key Notes

Assembly Type: Long block assemblies include block, head, crankshaft, camshaft, pistons, and valvetrain components
Condition: New units — not remanufactured or used cores
Engine Family: 4D102 is a 4-cylinder unit; 6D102 is a 6-cylinder unit, both Komatsu-designed diesel platforms
Application: Direct replacement for worn or damaged engine assemblies in Komatsu excavators
Compatibility: Verify engine serial number and machine model before ordering to confirm correct fitment

Why Choose Broken Tractor

✅ New long blocks available for Komatsu diesel platforms
✅ Fast shipping from Baton Rouge, LA and Kimbolton, OH
✅ Knowledgeable staff to confirm fitment before you order