Overhaul Rebuild Kit | Isuzu 3KR1 Engine / Sumitomo S90 S90FX Excavator

Restore the performance, reliability, and efficiency of your Sumitomo S90 / S90FX Excavator with this premium Overhaul Rebuild Kit for the Isuzu 3KR1 Engine. Manufactured to OEM-grade standards, this kit contains every essential internal engine component needed to perform a complete overhaul, ensuring maximum durability and extended equipment life.

Built to withstand demanding job-site conditions, the Isuzu 3KR1 engine powers many compact excavators and loaders. Over time, wear and tear can cause reduced power, oil burning, hard starting, overheating, and poor fuel efficiency. This rebuild kit eliminates these issues by replacing all critical wear components with brand-new, high-precision parts.

Each kit is quality-checked for perfect fitment, consistent performance, and long service life. Whether you are performing a preventive rebuild or repairing a major engine failure, this comprehensive kit ensures your machine is back to work quickly and dependably.

Included Components

✔ Pistons (Standard or Oversize Options)
✔ Piston Ring Set
✔ Cylinder Liners / Sleeves
✔ Full Gasket Set (Overhaul)
✔ Connecting Rod Bearings
✔ Main Crankshaft Bearings
✔ Thrust Washers
✔ Piston Pins & Circlips
✔ Valve Stem Seals
✔ Front & Rear Crankshaft Seals
✔ Additional seals and O-rings as required

Compatible Machines

Isuzu 3KR1 Engine used in:

• Sumitomo S90 Excavator

• Sumitomo S90FX Excavator

Why Choose This Overhaul Kit?

• OEM-grade fit and finish

• Restores engine compression and power

• Improves fuel efficiency

• Reduces oil consumption and smoke

• Extends overall engine lifespan

• Reliable for construction, rental, and heavy-duty usage

3KR1 Overhaul Rebuild Kit for Isuzu Engine Sumitomo S90 S90FX Excavator

Engine Model: ISUZU 3KR1 Engine

Machine Model: SUMITOMO

Application: S90, S90FX

OEM Numbers:3KR1