What does 'housing bore +.020' mean for this bearing set?

This means the engine block's main bearing bores have been machined to be 0.020 inches larger than the original factory size. This bearing set is designed to fit precisely into those enlarged bores.

What is trimetal construction?

Trimetal bearings use a multi-layer design, typically consisting of a steel backing for strength, a middle layer of alloy for embeddability and conformability, and a bearing surface layer for wear resistance and low friction.

Is this bearing set a direct replacement for all Isuzu 4HK1-TCN engines?

This set is specifically for Isuzu 4HK1-TCN engines that have had their main bearing housing bores machined to be +.020 inches larger than stock. It is an optional replacement for the MB5743CP bearing with the same +.020" housing bore specification.

Specifications

Brand: King Engine Bearings
Part #: MB5776CP0.25
UPC: 611500586927

King Engine Bearings Isuzu 4HK1 (Housing Bore +.020) (Size 0.25 Oversized) Main Bearing Set

Name: King Engine Bearings Isuzu 4HK1 (Housing Bore +.020) (Size 0.25 Oversized) Main Bearing Set
Brand: King Engine Bearings
SKU: king-engine-bearings-king-engine-bearings-isuzu-4hk1-housing-bore-020-size-0-25--t14-45763
Price: 171.96 USD
Availability: BackOrder

$171.96

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King Engine Bearings main bearing set for Isuzu 4HK1-TCN. Size 0.25 oversized, housing bore +.020.

Key Features

Fits Isuzu 4HK1-TCN engines with a housing bore of +.020 inches.
This is a 0.25 inch oversized main bearing set.
Constructed with a trimetal design for durability and performance.
Designed as an optional replacement for MB5743CP housing bore +.020" main bearings.

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

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About this part

Product Details

King Engine Bearings is well-known for making solid engine components, and this main bearing set for the Isuzu 4HK1-TCN is no exception. These bearings are a critical part of your engine's rotating assembly, supporting the crankshaft within the engine block. This set is specifically sized at 0.25 inches oversized and designed for a housing bore of +.020 inches, meaning it's intended for engines that have already been machined to accommodate larger bearings.

Built with a trimetal construction, these bearings offer a strong and durable surface for the crankshaft to spin against. The trimetal design typically involves multiple layers of different materials, each chosen for specific properties like wear resistance and embeddability, helping to ensure consistent oil film and reduced friction. This particular set is an optional replacement for the MB5743CP housing bore +.020" part, offering a direct fit for engines prepared to that specification.