What does the +0.50mm size mean for these bearings?

The +0.50mm sizing indicates that these bearings are intended for use when the crankshaft journals have been machined down by 0.50mm. This is a common practice during engine rebuilding to clean up wear or damage on the crankshaft.

What is the construction of these main bearings?

These main bearings are made with a bimetal construction, featuring an aluminum base. This material choice is selected for its good wear resistance and performance in supporting the rotating crankshaft.

Are these bearings sold individually or as a set?

This product is a main bearing set, meaning it includes all the necessary main bearings required to replace the set in your Isuzu 4ZB1 engine during an overhaul.

Specifications

Brand: King Engine Bearings
Part #: MB5559AM1.5
UPC: 611500204456

King Engine Bearings Isuzu 4Zb1 (Size +0.50mm) Main Bearing Set

Name: King Engine Bearings Isuzu 4Zb1 (Size +0.50mm) Main Bearing Set
Brand: King Engine Bearings
SKU: king-engine-bearings-king-engine-bearings-isuzu-4zb1-size-0-50mm-main-bearing-se-t14-770834
Price: 50.12 USD
Availability: BackOrder

$50.12

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Fits 1986-1995 Isuzu Pickup. King Engine Bearings main bearing set for the 4ZB1 engine, sized +0.50mm, essential for engine rebuilds.

Key Features

Fits 1986-1995 Isuzu Pickup, 1989-1993 Amigo, 1985-1989 Impulse, and 1986-1987 Trooper.
Designed for the Isuzu 4ZB1 engine.
Main bearing set sized +0.50mm for use with a machined crankshaft.
Constructed with a bimetal (aluminum base) material for durability.
Supports the crankshaft and maintains proper oil clearance.

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About this part

Product Details

If you're rebuilding the bottom end of your 1986-1995 Isuzu Pickup with the 4ZB1 engine, a fresh set of main bearings is critical. These bearings sit between the crankshaft and the engine block, supporting the rotating assembly and ensuring smooth operation. This set from King Engine Bearings is specifically designed for engines that have been machined to a +0.50mm size, meaning the crankshaft journals have been ground down by 0.50mm and require bearings to match.

King Engine Bearings uses a bimetal construction with an aluminum base for these main bearings. This type of material is well-suited for the demands of supporting a crankshaft, offering good wear characteristics and compatibility with various oil types. Installing these bearings correctly is key to a successful engine rebuild, ensuring proper oil clearance and long-term reliability for your Isuzu.