What does the 0.25 size mean for these main bearings?

The 0.25 in the part number indicates that these main bearings are 0.025 inches undersize. This is a common size used when the crankshaft journals have been machined down to correct for wear or damage during an engine rebuild.

What is PMaxBlack and Radialock technology?

PMaxBlack is King's advanced overlay material, designed to handle higher loads. Radialock is a feature that helps the bearing maintain its proper shape and crush height during installation, which is crucial for proper oil clearance and bearing function.

Do these bearings come with installation hardware?

This product includes the main bearings themselves. It does not typically include additional installation hardware like main cap bolts or oil. You will need to source those separately if required for your engine build.

King Engine Bearings Ford Prod. V8 4.6L/5.4L (Size 0.25) Performance Main Bearing Set

Specifications

Brand: King Engine Bearings
Part #: MB5280XP0.25
UPC: 611500537417

King Engine Bearings Ford Prod. V8 4.6L/5.4L (Size 0.25) Performance Main Bearing Set

Name: King Engine Bearings Ford Prod. V8 4.6L/5.4L (Size 0.25) Performance Main Bearing Set
Brand: King Engine Bearings
SKU: king-engine-bearings-king-engine-bearings-ford-prod-v8-4-6l-5-4l-size-0-25-perfo-t14-271479
Price: 167.94 USD
Availability: BackOrder

$167.94

On Backorder

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King Engine Bearings performance main bearing set for Ford 4.6L/5.4L V8 engines. Size 0.25. Features PMaxBlack for superior load capacity.

Key Features

Fits 28+ vehicle make/model combinations including Ford Crown Victoria, Expedition, and Mustang.
Main bearing set sized 0.025 inches undersize.
Features PMaxBlack overlay for superior load capacity.
Incorporates Radialock technology for optimal crush height.
Constructed with a tri-metal copper-based 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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Will this fit your vehicle?

Product Details

When you're rebuilding the bottom end of your Ford 4.6L or 5.4L V8, you need main bearings that can handle the job. This set from King Engine Bearings includes the main bearings you'll need to get your engine back together. King has been specializing in bearings since 1960, focusing on supplying well-built engine bearings.

These bearings feature King's PMaxBlack overlay, which is a tri-metal copper-based material designed for superior load capacity. They also incorporate Radialock technology, which helps maintain optimal crush height during installation. This combination helps ensure consistent performance and durability for your engine's crankshaft.

This set is specifically sized at 0.025 inches undersize, which is important to note for your build. They are designed to fit a wide range of Ford vehicles, including models like the Crown Victoria, Expedition, F-150, and Mustang, among many others. Always refer to the manufacturer's installation instructions for proper fitment and assembly procedures.