What does the '020' in the part number mean?

The '020' indicates that this main bearing set is 0.020 inch undersize. This means the bearings are designed to be used with a crankshaft that has been machined down by 0.020 inches to correct for wear or to achieve a specific clearance.

What type of engines is this bearing set best suited for?

This bearing set is ideal for low to medium-load engines. The lead-free composite material is specifically designed for these types of applications, offering good performance without excessive stress.

Does this bearing set come with installation hardware?

This product is a main bearing set and typically includes only the main bearings themselves. Installation hardware, such as main cap bolts or oil seals, is usually sold separately. Always refer to the manufacturer's instructions for a complete list of included components.

Specifications

Brand: King Engine Bearings
Part #: MB5511AM020
UPC: 611500295423

King Engine Bearings GM 326/350/389/400 Main Bearing Set Size 020

Name: King Engine Bearings GM 326/350/389/400 Main Bearing Set Size 020
Brand: King Engine Bearings
SKU: king-engine-bearings-king-engine-bearings-gm-326-350-389-400-main-bearing-set-si-t14-960196
Price: 131.16 USD
Availability: BackOrder

$131.16

On Backorder

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King Engine Bearings GM 326/350/389/400 Main Bearing Set Size 020. Lead-free composite ideal for low to medium-load engines.

Key Features

Fits 27+ vehicle make/model combinations including Pontiac GTO, Chevrolet Corvette, and Buick Skylark.
Main bearing set for General Motors 326, 350, 389, and 400 engines.
Size is 0.020 inch undersize.
Constructed with a lead-free, environmentally safe composite material.
Ideal for low to medium-load engines.
Features a bi-metal aluminum material.

⚠️ CA WARNING: This product can expose you to chemicals known to the State of California to cause cancer and/or birth defects or other reproductive harm. Learn more

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About this part

Product Details

King Engine Bearings has been specializing in engine bearings since 1960, aiming to supply the highest quality bearings available. This main bearing set, part number MB5511AM020, is designed for General Motors 326, 350, 389, and 400 cubic inch engines. It's built with a lead-free, environmentally safe composite material, making it a solid choice for low to medium-load applications.

This set is 0.020 inch undersize, which is important to note if you're rebuilding or machining your crankshaft. The bi-metal aluminum construction offers a good balance of strength and thermal conductivity, suitable for many classic GM V8s. This bearing set fits a wide range of vehicles, including popular models like the Pontiac GTO, Chevrolet Corvette, and Buick Skylark from various years.