What is the PMaxBlack technology?

PMaxBlack is a technology developed by King Engine Bearings that enhances the load-carrying capacity of the bearings. This means they are built to withstand higher pressures and stresses within the engine.

What does 'optimal crush height' mean for Radialock?

Radialock is a feature designed to help the bearing maintain its proper 'crush' when installed. This 'crush' is important for keeping the bearing securely in place within the engine block and ensuring good oil film formation.

What material are these bearings made from?

These bearings are made from a tri-metal copper-based material. This type of construction is common for performance and high-quality engine bearings because it offers a good balance of strength, embeddability, and conformability.

Specifications

Brand: King Engine Bearings
Part #: MB5304XP
UPC: 611500542930

King Engine Bearings Mazda B6/B6-T/ZM/B3/B5 Main Bearing Set - Size STD

Name: King Engine Bearings Mazda B6/B6-T/ZM/B3/B5 Main Bearing Set - Size STD
Brand: King Engine Bearings
SKU: king-engine-bearings-king-engine-bearings-mazda-b6-b6-t-zm-b3-b5-main-bearing-se-t14-4326086
Price: 97.45 USD
Availability: BackOrder

$97.45

On Backorder — Expected to ship by May 3, 2026

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

King Engine Bearings Mazda B6/B6-T/ZM/B3/B5 Main Bearing Set - Size STD. Features PMaxBlack for superior load capacity.

Key Features

Fits a range of vehicles including Mazda Miata, Mazda Protege, and Ford Escort.
Main bearing set, size STD, part number MB5304XP.
Features PMaxBlack technology for superior load capacity.
Includes Radialock 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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About this part

Product Details

This is a King Engine Bearings Main Bearing Set, size STD, part number MB5304XP. You get the main bearings needed to rebuild the bottom end of your engine. These bearings are made with a tri-metal copper-based material, which is a well-built choice for handling the demands of engine operation. They feature King's PMaxBlack technology, designed to handle higher loads than standard bearings, and Radialock, which helps maintain optimal crush height during installation for a solid fit.

King Engine Bearings has been specializing in engine bearings since 1960, focusing on supplying high-quality components. This set is designed to fit a range of vehicles, including popular models like the Mazda Miata, Mazda Protege, and Ford Escort. When you're rebuilding your engine, using well-made bearings like these is crucial for ensuring proper crankshaft support and longevity.