Isuzu 4BD1 Rebuild Kit for Hitachi EX90, EX100, EX120

Description

Isuzu 4BD1 Rebuild Kit: Rebuild the Engine in Your Hitachi EX90, EX100 or EX120

A mid-size Hitachi that is down holds up the whole job. This Isuzu 4BD1 rebuild kit supplies pistons, cylinder liners, bearings, valves and a complete gasket set for the four-cylinder Isuzu 4BD1 diesel in Hitachi EX90, EX100, EX120 and EX150 excavators. Choose your bearing sizes and piston height, then order today.

Kit Contents

One kit delivers the core rebuild parts:

• 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, standard size
• Main bearings (one set)
• Connecting rod bearings (one set)
• Thrust washers (one set)
• Intake and exhaust valves (one set)
• Valve guides (one set)
• Intake and exhaust valve seats (one set)

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

Key Features

• Covers the 4BD1 family. The kit is listed for the Isuzu 4BD1, 4BD1T and 4BD1-T1 engines, so one part set serves all three codes.
• Piston height choice. Choose 98 mm or 104 mm so the pistons match your engine.
• Bearing sizes. Main and connecting rod bearings each come in Standard, +0.25 mm and +0.5 mm, so the kit can match a ground crankshaft.
• Complete wear set. Pistons, rings, pins, snap rings and rod bushings pair with main bearings, rod bearings and thrust washers, while valves, guides and seats cover the head.
• Fixes what you can hear and see. Smoke, rising oil use, hard starting and a loss of digging power usually trace back to worn rings, liners and bearings. Renewing them together addresses the cause.

Compatibility

This Isuzu 4BD1 rebuild kit fits the Isuzu 4BD1, 4BD1T and 4BD1-T1 engines.

The Hitachi models listed are the EX90, EX100, EX100-2, EX100-3, EX100-4, EX120, EX120-2, EX120-3 and EX150. Confirm the engine code on your nameplate and compare your old piston with the 98 mm and 104 mm options before ordering.

Other version: see our Isuzu 4BD1T rebuild kit. Working on a larger Hitachi? Our Isuzu 6BD1 rebuild kit covers the EX200 series. Browse the full Isuzu rebuild kits category.

Why Choose This Isuzu 4BD1 Rebuild Kit

Excavator owners choose this Isuzu 4BD1 Rebuild Kit because it keeps the repair simple:

• Back on site sooner. Pistons, liners, bearings, valves and gaskets arrive together, so the rebuild is not held up.
• Piston height up front. The 98 mm and 104 mm options reduce the risk of a wrong order.
• Cheaper than replacement. A rebuild keeps a machine you already own working for far less than a replacement engine.
• Help before you buy. Send your engine serial number and we will help you confirm fitment. Isuzu engine information is at Isuzu Diesel Engines.

FAQs

Which Hitachi models use the Isuzu 4BD1 rebuild kit?

The listed models are the Hitachi EX90, EX100, EX100-2, EX100-3, EX100-4, EX120, EX120-2, EX120-3 and EX150, with the Isuzu 4BD1 or 4BD1T engine.

How do I choose the piston height?

Piston height is offered as 98 mm or 104 mm. Measure or compare your old piston, or send us a photo and your engine serial number and we will help.

What bearing sizes are available?

Standard, +0.25 mm and +0.5 mm for both main and connecting rod bearings. Measure your crankshaft journals first.

What is not included?

The block, crankshaft and cylinder head are not included in the kit.

Get your Hitachi digging again. Select your bearing sizes and piston height, then add the Isuzu 4BD1 rebuild kit to your cart. Need help choosing? Send us your engine serial number first.