What does the .030 size mean for these bearings?

The .030 size indicates that these main bearings are ground undersize by 0.030 inches. This is common during engine rebuilding when the crankshaft journals have been machined undersize to clean up wear or damage.

What is the advantage of the lead-free composite material?

The lead-free composite material is an environmentally safer alternative to traditional bearings that contain lead. It's designed to perform well in low to medium-load engine applications, offering reliable performance.

Does this bearing set come with installation hardware?

This product is a set of crankshaft main bearings only. Installation hardware, such as main bearing bolts or studs, is typically sold separately and should be sourced according to your vehicle's specific service manual.

King Engine Bearings Ford 239/256/272/292 (Size .030) Crankshaft Main Bearing Set

Specifications

Brand: King Engine Bearings
Part #: MB 583AM 030
UPC: 611500173738

King Engine Bearings Ford 239/256/272/292 (Size .030) Crankshaft Main Bearing Set

Name: King Engine Bearings Ford 239/256/272/292 (Size .030) Crankshaft Main Bearing Set
Brand: King Engine Bearings
SKU: king-engine-bearings-king-engine-bearings-ford-239-256-272-292-size-030-cranksha-t14-356855
Price: 182.25 USD
Availability: BackOrder

$182.25

On Backorder

Order now to reserve yours — we'll ship as soon as stock arrives. Full refund if we're unable to fulfill.

King Engine Bearings Ford 239/256/272/292 (Size .030) Crankshaft Main Bearing Set. Lead-free composite bearings for low to medium-load engines.

Key Features

Fits 1954-1965 Ford F-100, 1955-1961 Ford Fairlane, 1955-1958 Ford Thunderbird, and many other Ford and Mercury vehicles.
This is a crankshaft main bearing set sized .030 inches undersize.
Features a lead-free, environmentally safe composite material.
Constructed with a bi-metal aluminum material.
Ideal for low to medium-load engines.

⚠️ 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

Secure CheckoutFast Shipping631-982-0042

Will this fit your vehicle?

Product Details

If you're rebuilding the engine in your classic Ford or Mercury, getting the crankshaft main bearings right is crucial. This set from King Engine Bearings is specifically made for Ford 239, 256, 272, and 292 cubic inch engines, and it's sized .030 inches undersize to help you achieve proper clearances during your rebuild.

King has been specializing in bearings since 1960, and this set uses a lead-free, bi-metal aluminum composite. This material is a solid choice for low to medium-load engines, offering good performance without environmentally harmful lead. These bearings are designed to fit right and provide reliable performance for your classic vehicle's rotating assembly.

This bearing set fits a wide range of popular Ford and Mercury vehicles from the mid-50s to early-60s, including models like the Ford F-100, Ford Fairlane, and Mercury Monterey. Always refer to your vehicle's service manual for specific installation procedures and torque specifications.