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

The '+0.50mm' indicates that these main bearings are oversized by half a millimeter. This means they are designed to be used when the main journals on your engine's crankshaft have been machined down by 0.50mm, typically to correct wear or imperfections.

What is the construction of these main bearings?

These main bearings are made with a bimetal construction that uses an aluminum base. This type of bearing is common in many engines and is chosen for its ability to handle load and temperature.

What vehicles does this main bearing set fit?

This set is specifically designed for Isuzu 4XE1, 4XF1, and 4XC1T engines. This includes fitment for the 1990-1993 Geo Storm, 1988 Chevrolet Nova, 1991-1992 Isuzu Impulse, 1991-1993 Isuzu Stylus, and 1990-1992 Lotus Elan.

Specifications

Brand: King Engine Bearings
Part #: MB5128AM0.5
UPC: 611500190421

King Engine Bearings Isuzu 4Xe1/4Xf1/4Xc1T (Size +0.50mm) Main Bearing Set

Name: King Engine Bearings Isuzu 4Xe1/4Xf1/4Xc1T (Size +0.50mm) Main Bearing Set
Brand: King Engine Bearings
SKU: king-engine-bearings-king-engine-bearings-isuzu-4xe1-4xf1-4xc1t-size-0-50mm-main-t14-770499
Price: 50.12 USD
Availability: BackOrder

$50.12

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Fits 1990-1993 Geo Storm. This is a set of main bearings, 0.50mm oversize, made with an aluminum base.

Key Features

Fits 1990-1993 Geo Storm, 1988 Chevrolet Nova, 1991-1992 Isuzu Impulse, 1991-1993 Isuzu Stylus, and 1990-1992 Lotus Elan.
This is a main bearing set for Isuzu 4XE1, 4XF1, and 4XC1T engines.
The bearings are 0.50mm oversize, intended for use with machined crankshaft journals.
Constructed with a bimetal design featuring an aluminum base.

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About this part

Product Details

This main bearing set includes the bearings you need for your Isuzu 4XE1, 4XF1, or 4XC1T engine, sized 0.50mm oversize. These bearings are constructed with a bimetal design, featuring an aluminum base for reliable performance.

When you're rebuilding the bottom end of your engine, the main bearings are critical. They support the crankshaft and allow it to spin smoothly within the engine block. This set from King Engine Bearings uses an aluminum-based bimetal construction, which is a common and well-tested approach for handling the loads and temperatures found in these engines. The 0.50mm oversize means these are intended for use when the main journals on your crankshaft have been machined down by 0.50mm to clean them up or account for wear.