What does the +.025 size mean for these main bearings?

The +.025 size indicates that these bearings are intended for use when the crankshaft journals have been machined down by 0.025 inches. This is a common practice during engine rebuilds to ensure proper oil clearance with a worn or reconditioned crankshaft.

What is PMaxBlack technology?

PMaxBlack is a technology developed by King Engine Bearings that enhances the load-carrying capacity of their bearings. It's designed to help the bearings withstand higher pressures and stresses within the engine.

What is the benefit of a tri-metal copper-based material?

Tri-metal bearings, like those made with a copper-based material, offer a good balance of strength and conformability. This construction helps them handle significant loads while still being able to adapt to minor imperfections in the crankshaft surface, contributing to better oil film retention.

Specifications

Brand: King Engine Bearings
Part #: MB5304XP.026
UPC: 611500608797

King Engine Bearings Mazda B6/B6-T/ZM/B3/B5 (Size +.025) Main Bearing Set

Name: King Engine Bearings Mazda B6/B6-T/ZM/B3/B5 (Size +.025) Main Bearing Set
Brand: King Engine Bearings
SKU: king-engine-bearings-king-engine-bearings-mazda-b6-b6-t-zm-b3-b5-size-025-main-b-t14-168850
Price: 109.06 USD
Availability: InStock

$109.06

Only 1 left in stock

King Engine Bearings Mazda B6/B6-T/ZM/B3/B5 (Size +.025) Main Bearing Set. Features PMaxBlack for superior load capacity.

Key Features

This product is a King Engine Bearings Main Bearing Set, part number MB5304XP.026.
The set includes main bearings sized at +.025 inches for engine rebuilding.
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, specifically the MB5304XP.026. You get the main bearings needed for your engine rebuild. These bearings are made with a tri-metal copper-based material, which is a solid choice for handling the demands of an engine. They also feature King's PMaxBlack technology, designed to handle higher loads, and Radialock, which helps maintain optimal crush height during installation. This set is designed to fit a range of vehicles, including models like the Mazda Miata, Ford Escort, and Kia Rio.

King Engine Bearings has been specializing in engine bearings since 1960, focusing on supplying well-built components. This particular set is sized at +.025 inches, meaning it's intended for use when the crankshaft journals have been machined down by that amount during an engine rebuild. Using the correct bearing size is crucial for maintaining proper oil clearance and ensuring the longevity of your engine's rotating assembly.