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

This means the main bearing housing bore in your engine block has been machined to be 0.020 inches larger than the factory specification. These bearings are designed to fit correctly within that modified bore size.

What does 'Size 0.50 Oversized' refer to?

This indicates the bearing is 0.50mm (approximately 0.020 inches) thicker than a standard bearing. It's meant to be used when the engine's crankshaft has been machined down by 0.020 inches to account for wear.

What is a trimetal bearing construction?

Trimetal bearings use three layers of material: a steel backing for strength, a middle layer of alloy for load carrying, and a thin overlay for conformability and wear resistance. It's a common and well-regarded construction for main bearings.

Specifications

Brand: King Engine Bearings
Part #: MB5776CP0.5
UPC: 611500586934

King Engine Bearings Isuzu 4HK1 (Housing Bore +.020) (Size 0.50 Oversized) Main Bearing Set

Name: King Engine Bearings Isuzu 4HK1 (Housing Bore +.020) (Size 0.50 Oversized) Main Bearing Set
Brand: King Engine Bearings
SKU: king-engine-bearings-king-engine-bearings-isuzu-4hk1-housing-bore-020-size-0-50--t14-45764
Price: 171.96 USD
Availability: BackOrder

$171.96

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King Engine Bearings main bearing set for Isuzu 4HK1-TCN. Size 0.50 oversized, housing bore +.020.

Key Features

Fits Isuzu 4HK1-TCN engines with a housing bore of +.020 inches.
This is a 0.50 oversized main bearing set, intended for a crankshaft machined to 0.020 inches undersize.
Constructed with a durable trimetal material for reliable performance.
Designed as an optional replacement for part number MB5743CP when the housing bore is +.020 inches.

This main bearing set is designed for Isuzu 4HK1-TCN engines where the housing bore has been machined to +.020 inches and the crankshaft is 0.020 inches undersize.

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About this part

Product Details

King Engine Bearings is known for making well-built engine components, and this main bearing set for the Isuzu 4HK1-TCN engine is no exception. If you're rebuilding the bottom end of your 4HK1-TCN, these bearings are a critical part of ensuring your crankshaft spins smoothly and stays properly aligned within the engine block. This set is specifically sized at 0.50 oversized, meaning it's designed to fit a crankshaft that has been machined down by 0.020 inches, and it also accounts for a housing bore that is +.020 inches larger than stock.

These bearings are constructed with a trimetal design, which is a common and effective material choice for main bearings. This construction offers good durability and wear resistance, important for handling the loads and friction involved in engine operation. The fact that this set is an optional replacement for MB5743CP, also for a housing bore of +.020, suggests it's a direct fit for applications where that specific machining has been done.