What does 'Housing Bore +.020' mean for this bearing set?

This indicates that the engine block's main bearing bores have been machined to be 0.020 inches larger than their original factory size. The bearings in this set are designed to fit precisely into those modified bores.

Are these bearings a direct replacement for all Isuzu 4HK1-TCN engines?

This set is specifically for Isuzu 4HK1-TCN engines where the main bearing housing bore has been machined to be +.020 inches. It's also an optional replacement for part number MB5743CP.

What is trimetal construction?

Trimetal bearings use three layers of material: a steel backing for strength, a copper-lead alloy for heat dissipation and embeddability, and a thin overlay of babbitt (a soft alloy) for excellent surface properties and oil retention.

Specifications

Brand: King Engine Bearings
Part #: MB5776CP
UPC: 611500585517

King Engine Bearings Isuzu 4HK1 (Housing Bore +.020) (Size STD) Main Bearing Set

Name: King Engine Bearings Isuzu 4HK1 (Housing Bore +.020) (Size STD) Main Bearing Set
Brand: King Engine Bearings
SKU: king-engine-bearings-king-engine-bearings-isuzu-4hk1-housing-bore-020-size-std-m-t14-45762
Price: 171.96 USD
Availability: BackOrder

$171.96

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King Engine Bearings Isuzu 4HK1 main bearing set. Size STD, Housing Bore +.020. For rebuilding your engine.

Key Features

Fits Isuzu 4HK1-TCN engines with a housing bore measurement of +.020 inches.
Standard (STD) size crankshaft journal bearing set.
Constructed with trimetal material for effective oil and heat management.
Designed as an optional replacement for part number MB5743CP.

This main bearing set is designed for Isuzu 4HK1-TCN engines with a housing bore measurement of +.020 inches.

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About this part

Product Details

This main bearing set from King Engine Bearings is built with a trimetal construction, a design choice that helps manage oil flow and heat effectively within your Isuzu 4HK1-TCN engine. When you're rebuilding the bottom end of your engine, the main bearings are critical for supporting the crankshaft and ensuring it spins smoothly. This set is specifically sized for a housing bore that is +.020 inches larger than standard, and the bearings themselves are standard size (STD) for the crankshaft journal.

King Engine Bearings is a well-known name in engine components, and this set is designed to meet the demands of engine work. The trimetal material offers a good balance of strength and conformability, which is important for proper bearing function and longevity. This particular set is an optional replacement for part number MB5743CP, indicating it's a direct fit for applications requiring that specific housing bore measurement.