Isuzu 4HK1 Rebuild Kit – Fits Hitachi, Sumitomo, John Deere Excavators & NPR/NQR/NRR Trucks

Description

Isuzu 4HK1 Rebuild Kit – Fits Hitachi, Sumitomo, John Deere Excavators & NPR/NQR/NRR Trucks

What’s included in Isuzu 4hk1 Rebuild Kit:

• Full gasket kit
• Cylinder liners, semi-finished (set)
• Standard-size pistons (set)
• Piston pins and snap rings (set)
• Rod bushings (set)
• Standard-size piston ring set (4 pistons)
• Main/connecting rod bearings (set)
• Thrust bearings (set)
• Intake/exhaust valves (set)
• Intake/exhaust valve seats (set)
• Valve guides (set)

Isuzu 4hk1 Rebuild Kit Fits Engine Models:
Isuzu 4HK1, 4HK1T, 4HK1TC

Fits Machines:
Truck: Isuzu/Chevrolet NPR, NQR, NRR
Hitachi Excavator: ZX170W-3, ZX190W-3, ZW220, ZX200-3, ZX210-3, ZX240-3, ZX250-3, ZX330, ZX350-3
Sumitomo Excavator: SH240-5, SH240A5
John Deere Excavator: 220DW, 225DLC, 330CLC, 370C
(cross-referenced from matching part numbers — confirm with your supplier before publishing all four brand groups)

Cross-reference part numbers:
2801732, 2801734, 2801784, 2801841, 2802675, 2802694, 8943915024, 1121119760, 1876182440, 1878129861, 1878135390/91, 1878137660/61/71, 5878148320, 5878148621, 8980410620, 5878150350, 5878148901

Few diesel engines show up across as many different equipment brands as the Isuzu 4HK1. Originally built for Isuzu’s own N-series trucks — the NPR, NQR, and NRR, also sold in North America under the Chevrolet badge — the 4HK1 was licensed and installed by several major excavator manufacturers as well, including Hitachi, Sumitomo, and John Deere. If your machine is any of these, the correct rebuild kit is the same one, regardless of which name is painted on the hood.

This Isuzu 4hk1 Rebuild kit covers the 4HK1, 4HK1T (turbocharged), and 4HK1TC (turbocharged, charge-cooled) variants, and includes the components a full rebuild requires: standard-bore pistons, semi-finished cylinder liners, piston pins, snap rings, and a matched piston ring set for the bottom end, plus main/connecting rod bearings and thrust bearings to bring crankshaft clearances back to spec. On the top end, a full valve-train set — intake and exhaust valves, valve guides, and valve seats — lets you recondition the cylinder head as part of the same job, and a complete overhaul gasket kit covers everything that should be replaced, not reused, once the engine is opened up.

Because the Isuzu 4HK1 Rebuild Kit has been sold under so many OEM part numbers across its different applications, this kit is cross-referenced against a long list of replacement numbers, including 2801732, 2801784, 2802675, 8943915024, and the 1-878xx and 5-878xx series numbers used across Isuzu, Hitachi, and Sumitomo parts catalogs. If you’re working from a part number off your old components rather than an engine code, check it against this list before ordering — a match on any of these numbers means this is the right kit.

Whether you’re rebuilding an Isuzu NPR box truck, a Hitachi ZX210 digging on a job site, or a Sumitomo SH240 that’s lost compression, this kit is built to take you from teardown to reassembly in one order, not a partial fix requiring a second purchase mid-rebuild. Confirm your exact machine model or engine serial number with us before ordering if you’re unsure which Isuzu 4HK1 Rebuild Kit variant you have — turbocharged and non-turbo versions can differ in bearing and piston specification even though they share the same base engine code.

Looking for other Isuzu Rebuild Kits? Check it out Isuzu Rebuild Kits
Diesel Engine Maintenance Guide