What does the .040 size mean for these bearings?

The .040 size indicates that these bearings are 0.040 inches undersize compared to a standard main bearing. This is used when the crankshaft journals have been machined down to correct for wear or damage during an engine rebuild.

What kind of engines are these bearings best suited for?

These bearings are specifically designed for low to medium-load engines. They utilize a lead-free composite material that is environmentally safe and performs well in applications that don't require the extreme load capacity of heavy-duty racing bearings.

Does this bearing set come with everything needed for installation?

This listing is for the crankshaft main bearing set only. It is recommended to refer to your vehicle's service manual for any additional components or specialized tools that may be required for proper installation.

King Engine Bearings Ford 239/256/272/292 (Size .040) Crankshaft Main Bearing Set

Specifications

Brand: King Engine Bearings
Part #: MB 583AM 040
UPC: 611500173745

King Engine Bearings Ford 239/256/272/292 (Size .040) Crankshaft Main Bearing Set

Name: King Engine Bearings Ford 239/256/272/292 (Size .040) Crankshaft Main Bearing Set
Brand: King Engine Bearings
SKU: king-engine-bearings-king-engine-bearings-ford-239-256-272-292-size-040-cranksha-t14-356856
Price: 182.25 USD
Availability: BackOrder

$182.25

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King Engine Bearings Ford 239/256/272/292 (Size .040) Crankshaft Main Bearing Set. For rebuilding low to medium-load engines.

Key Features

Fits a wide range of Ford and Mercury vehicles from the 1950s and early 1960s.
This is a 0.040 inch undersize crankshaft main bearing set.
Features a lead-free, environmentally safe composite material.
Ideal for low to medium-load engine applications.
Constructed with a bi-metal aluminum material for durability.

⚠️ 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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Will this fit your vehicle?

Product Details

If you're rebuilding the bottom end of a classic Ford or Mercury engine, getting the crankshaft main bearings right is crucial. This set from King Engine Bearings is specifically made for engines like the Ford 239, 256, 272, and 292 cubic inch displacements, and it's sized 0.040 inch undersize to help you achieve proper clearance during your rebuild.

King has been specializing in bearings since 1960, focusing on making them as high-quality as possible. This particular set uses a lead-free composite material that's environmentally safe and well-suited for engines that aren't under extreme load. The bi-metal aluminum construction is a solid choice for these types of applications, offering reliable performance for your engine build.

This bearing set fits a wide range of classic Ford and Mercury vehicles from the 1950s and early 1960s, including popular models like the Ford F-100, Ford Fairlane, and Mercury Monterey. Make sure to check the full fitment list to confirm it's the right part for your project.