What does the STDX size mean for these bearings?

The STDX designation means these bearings are 0.040 inches undersize. This is important if your crankshaft has been machined to a smaller diameter to correct wear or achieve specific clearances.

Does this bearing set come with all the necessary components for installation?

This listing is for the main bearing set only. It is recommended to consult your vehicle's service manual or the manufacturer's installation guide for any additional components or preparation steps required for installation.

Specifications

Brand: King Engine Bearings
Part #: MB509HPSTDX
UPC: 611500530654

King Engine Bearings Chevrolet 400 V8 (Size STDX) Main Bearing Set

Name: King Engine Bearings Chevrolet 400 V8 (Size STDX) Main Bearing Set
Brand: King Engine Bearings
SKU: king-engine-bearings-king-engine-bearings-chevrolet-400-v8-size-stdx-main-bearin-t14-770495
Price: 94.22 USD
Availability: BackOrder

$94.22

On Backorder

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King Engine Bearings Chevrolet 400 V8 (Size STDX) Main Bearing Set. Built with a lead-free composite bi-metal aluminum material for improved performance.

Key Features

Fits 79+ vehicle make/model combinations including Chevrolet 400 V8 engines.
STDX size indicates a 0.040 inch undersize bearing set.
Constructed with a lead-free, environmentally safe composite bi-metal aluminum material.
Designed for high performance applications.
Specialized engine bearing manufacturer since 1960.

⚠️ 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

If you're rebuilding the bottom end of your Chevrolet 400 V8, a solid set of main bearings is crucial. This set from King Engine Bearings is designed to meet the demands of performance applications, offering a well-built component for your engine build. They specialize in bearings, and this set is a testament to that focus, aiming to provide the highest quality available.

These bearings feature a lead-free, environmentally safe composite bi-metal aluminum material. This construction is chosen for its performance characteristics, helping to ensure smooth operation and durability within the engine. The STDX size indicates a specific undersize, important for proper clearance when machining crankshafts. King has been making bearings since 1960, focusing on this one component to refine their offerings.