Engine Overhaul Rebuild Kit | Isuzu 3KR1 Engine / Hitachi Excavator EX22 EX25

Restore the full performance of your Hitachi mini excavator with this premium Engine Overhaul Rebuild Kit for the Isuzu 3KR1 engine. Designed to meet and exceed OEM standards, this comprehensive kit includes every critical internal engine component required for a reliable and long-lasting rebuild.

The Isuzu 3KR1 is known for its efficiency and smooth operation in compact applications such as the Hitachi EX22 and EX25 excavators. Over time, natural wear leads to loss of compression, smoking, hard starting, and reduced power. This overhaul kit brings your engine back to peak performance with high-precision matched components.

Each part is manufactured using heat-treated materials, CNC machining, and strict quality control to guarantee perfect fit and long service life—even in harsh construction environments. Whether you’re rebuilding an engine due to low compression, oil burning, or complete overhaul needs, this kit ensures a dependable repair solution.

Kit Components

✔ Pistons (Standard / Oversize options)
✔ Piston Rings
✔ Cylinder Liners (Dry/Wet depending on model)
✔ Full Gasket Set
✔ Main Bearings
✔ Connecting Rod Bearings
✔ Thrust Washers
✔ Valve Stem Seals
✔ Wrist Pin Bushings
✔ Seals & O-rings

Compatibility

• Engine: Isuzu 3KR1

• Machines:

  • Hitachi EX22 Excavator

  • Hitachi EX25 Excavator

  • Other 3KR1-powered small equipment

Why Choose Our 3KR1 Overhaul Kit?

• OEM-grade material quality

• Precision-machined components

• High temperature and wear resistance

• 100% compatibility guaranteed

• Improves compression, fuel efficiency & power output

• Suitable for full engine restoration projects

For Hitachi Excavator EX22 EX25 Isuzu Engine 3KR1 Overhaul Rebuild Kit

Engine Model: ISUZU 3KR1 Engine

Machine Model: HITACHI

Application: EX22,EX25