Isuzu 4HL1 Rebuild Kit for NPR, NQR, NRR and W5500 Trucks

Description

Isuzu 4HL1 Rebuild Kit: Get Your NPR, NQR or W-Series Truck Back on the Road

A truck that is off the road is not earning. This Isuzu 4HL1 rebuild kit supplies pistons, cylinder liners, bearings, valves and a full gasket set for the four-cylinder Isuzu 4HL1 diesel in NPR, NQR and NRR trucks and in GMC and Chevrolet W-series trucks. Choose your bearing sizes and piston type, then order today.

Kit Contents

One order delivers the core of the rebuild:

• Complete gasket set for the rebuild
• Cylinder liners, semi-finished (one set)
• Pistons, standard size (one set)
• Piston pins (one set)
• Snap rings (one set)
• Rod bushings (one set)
• Piston ring sets for four pistons, standard size
• Main and connecting rod bearings (one set)
• Thrust bearings (one set)
• Intake and exhaust valves (one set)
• Intake and exhaust valve seats (one set)
• Valve guides (one set)

Cylinder liners are semi-finished and need final machining. Pistons and rings are standard size. The engine block, crankshaft and cylinder head are not included.

Key Features

• Matched to the 4HL1. The kit is listed for the Isuzu 4HL1 and carries replacement numbers such as 8-97331-211-0, 8943916024 and 8973126430, so you can cross-check old components.
• Complete bottom end. Pistons, rings, pins, snap rings, rod bushings, main and connecting rod bearings and thrust bearings are all in the box.
• Valve train covered. Valves, valve guides and valve seats let you recondition the cylinder head while the engine is apart.
• Three choices at checkout. Select main bearing size, connecting rod bearing size and piston type (Type 1 or Type 2) so the kit matches your engine.

Compatibility

This Isuzu 4HL1 rebuild kit fits the Isuzu 4HL1 engine. The trucks listed are the Isuzu NPR, NPR-HD, NQR, NRR and NQR 450; the GMC W3500, W4500, W5500 and W5500HD; and the Chevrolet W5500 and W5500HD. Confirm the engine code on your nameplate before ordering.

Driving an older NPR with a 4HE1 engine? See our Isuzu 4HE1 rebuild kit. Newer N-series trucks with the 4HK1 need our Isuzu 4HK1 rebuild kit. Every kit is listed in the Isuzu rebuild kits category.

Why Choose This Isuzu 4HL1 Rebuild Kit

Owner-operators and fleet managers choose this Isuzu 4HL1 rebuild kit for practical reasons:

• A faster repair. Pistons, liners, bearings, valves and gaskets ship together, so the rebuild is not held up by missing parts.
• Cheaper than a replacement engine. Renewing the wear parts is often the economical way to keep a medium-duty truck working.
• Cross-check by part number. The listed replacement numbers help you match your old components to the kit.
• Help choosing the type. Not sure whether you need Type 1 or Type 2 pistons? Send us a photo of your old piston. Background on Isuzu commercial engines is at Isuzu Commercial Vehicles.

FAQs

Which trucks use the Isuzu 4HL1 rebuild kit?

The listed trucks are the Isuzu NPR, NPR-HD, NQR, NRR and NQR 450, the GMC W3500 to W5500HD and the Chevrolet W5500 and W5500HD, all with the Isuzu 4HL1 engine.

How do I pick the piston type?

Piston type is offered as Type 1 or Type 2. Compare your old pistons with the options, or send us a photo and your engine serial number and we will help you choose.

What bearing sizes are available?

Main and connecting rod bearings come in Standard, +0.25 mm and +0.5 mm. Measure your crankshaft journals before you choose.

Does the kit include the crankshaft or cylinder head?

No. The block, crankshaft and cylinder head are not part of this kit.

Get your truck back in service. Select your bearing sizes and piston type, then add the Isuzu 4HL1 rebuild kit to your cart. Need help choosing? Send us your engine serial number first.