Fuel Injection Pump for Isuzu 3KR1 Engine & Hitachi Mini Excavators — 8970103841

The Isuzu 3KR1 is a compact diesel engine powering Hitachi's EX22 and EX25 mini excavators — workhorses on tight jobsites where reliability is non-negotiable. When the injection pump fails, your machine stops earning. This brand-new aftermarket injection pump is a direct bolt-on replacement for part number 8970103841, precision-calibrated to restore OEM fuel pressure and injection timing to your 3KR1 engine. Get your mini excavator back to work fast — no modifications, no guesswork.

Why Replace Your Injection Pump?

A failing injection pump causes hard starts, loss of digging power, excessive smoke, and rising fuel consumption. For a compact excavator working in confined spaces, even minor power loss affects productivity. Replacing the pump promptly protects your injectors and engine from the downstream damage caused by low fuel pressure — and keeps your machine on the job.

Compatible Engine

• Isuzu 3KR1

Compatible Hitachi Excavators

• Hitachi EX22
• Hitachi EX25

Part Number

• 8970103841

What's Included

• 1 × Fuel Injection Pump (8970103841)

Key Specs

• ✅ 100% Brand New Aftermarket — Not rebuilt or refurbished
• ✅ OEM-Spec Calibration — Correct fuel pressure and injection timing for the Isuzu 3KR1
• ✅ Direct Bolt-On Fit — No modifications required; installs like the original
• ✅ Compact Equipment Grade — Built for the high-cycle demands of mini excavator applications
• ✅ Protects Downstream Components — Proper fuel pressure prevents injector wear and engine damage
• ✅ Minimizes Downtime — In-stock aftermarket availability when OEM lead times are long

Please verify your engine serial number and existing part number before ordering. Contact us for fitment confirmation if needed.