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

The '+0.50mm' indicates that these bearings are 0.50mm oversize. This means they are intended for use when the crankshaft journals have been machined down by 0.50mm during an engine rebuild. This ensures proper oil clearance is maintained.

What is the material construction of these main bearings?

These main bearings are made with a bimetal construction, featuring an aluminum base. This type of material is common for engine bearings as it helps with heat transfer and wear resistance.

Are these bearings a direct replacement for the original equipment?

These are an aftermarket replacement part designed to fit specific Isuzu and Chevrolet/Geo models. They are built to the correct specifications, including the 0.50mm oversize, to ensure proper fitment and function when used with a machined crankshaft.

King Engine Bearings Isuzu 4Xc1/T/4Xe1W (Size +0.50mm) Main Bearing Set

Specifications

Brand: King Engine Bearings
Part #: MB5540AM0.5
UPC: 611500202421

King Engine Bearings Isuzu 4Xc1/T/4Xe1W (Size +0.50mm) Main Bearing Set

Name: King Engine Bearings Isuzu 4Xc1/T/4Xe1W (Size +0.50mm) Main Bearing Set
Brand: King Engine Bearings
Price: 39.33 USD
Availability: InStock

$39.33

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Fits 1985-1989 Isuzu I-Mark. King Engine Bearings main bearing set, 0.50mm oversize, for 4XC1/T and 4XE1W engines.

Key Features

Fits 1985-1989 Isuzu I-Mark, 1985-1988 Chevrolet Spectrum, 1989 Geo Spectrum, 1990-1991 Isuzu Impulse, and 1991 Isuzu Stylus.
Main bearing set for Isuzu 4XC1/T and 4XE1W engines.
Bearings are 0.50mm oversize.
Constructed with a bimetal design featuring an aluminum base.

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Will this fit your vehicle?

Product Details

King Engine Bearings is well-known for making solid engine bearings. If you're rebuilding the bottom end of your 1985-1989 Isuzu I-Mark, or a Chevrolet Spectrum, Geo Spectrum, Isuzu Impulse, or Isuzu Stylus from the specified years, this main bearing set is what you'll need. These bearings are built with an aluminum base, which is a common material for bimetal bearings that helps with heat transfer and wear resistance.

This particular set is 0.50mm oversize, meaning it's designed to be used when the crankshaft journals have been machined down by 0.50mm. Using the correct size bearing is crucial for maintaining proper oil clearance, which is essential for engine longevity. King makes these bearings to fit right, so you can get your engine back together with confidence.