What does the +0.25mm sizing mean for these bearings?

The +0.25mm sizing indicates that these bearings are intended for an engine block that has been machined undersize by 0.25mm. This is common during engine rebuilds to true up worn crankshaft journals or block surfaces.

What is the benefit of the pmaxkote polymer coating?

The pmaxkote polymer coating is designed for racing applications. It helps reduce friction and wear, especially during the critical initial startup phase and under high-stress conditions, contributing to improved engine longevity in performance builds.

Are these bearings suitable for a stock engine rebuild?

While these bearings feature a racing-specific coating, their tri-metal construction is well-built for performance. They are best suited for performance or racing applications where the +0.25mm sizing is required. For a standard stock rebuild without machining, you would typically look for standard size bearings.

Specifications

Brand: King Engine Bearings
Part #: MB5734XPC0.25
UPC: 611500601521

King Engine Bearings Ford 302 Cid Coyote (Size +0.25mm) Main Bearing Set

Name: King Engine Bearings Ford 302 Cid Coyote (Size +0.25mm) Main Bearing Set
Brand: King Engine Bearings
SKU: king-engine-bearings-king-engine-bearings-ford-302-cid-coyote-size-0-25mm-main-b-t14-770924
Price: 277.52 USD
Availability: BackOrder

$277.52

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Fits 2011-2017 Ford F-150. King Engine Bearings main bearing set with pmaxkote polymer coating for improved performance.

Key Features

Fits 2011-2017 Ford F-150 and 2011-2017 Ford Mustang.
Main bearing set sized at +0.25mm for machined engine blocks.
Features King's pmaxkote polymer coating, designed for racing applications.
Tri-metal construction offers a well-built foundation for performance engines.
Specifically designed for the Ford 302 CID Coyote engine.

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About this part

Product Details

The pmaxkote polymer coating on these main bearings is a notable feature, especially if you're working on a performance build for your Ford F-150 or Mustang. This coating is specifically designed for racing applications, offering an extra layer of protection and improved friction characteristics where it matters most.

This set is sized at +0.25mm, meaning it's intended for engines that have already been machined to that specification during a rebuild. King Engine Bearings is known for producing well-built components, and this racing line bearing set is no exception. They are made with a tri-metal construction, which is a standard for high-performance engine bearings, providing a solid foundation for durability and oil flow.

If you're rebuilding the bottom end of your 2011-2017 Ford F-150 or Mustang's 302 CID Coyote engine and need bearings that can handle more stress, this set is a strong option. Just be sure to confirm your engine has been bored to the +0.25mm size before installation.