What does the +0.5 size mean for these bearings?

The +0.5 size indicates these bearings are 0.020 inches thicker than standard. This size is used when the crankshaft journals have been machined undersize during an engine rebuild to remove wear or damage.

What is the pMax Black trimetal material?

King's pMax Black trimetal is a multi-layered bearing material designed for high-performance applications. It offers improved strength and durability to handle increased loads and stresses found in race engines.

Are these bearings suitable for a daily driver?

While these are race bearings built for durability, their trimetal construction can offer improved longevity even in a daily driver, especially if the engine sees spirited driving. However, they are optimized for performance conditions.

Specifications

Brand: King Engine Bearings
Part #: MB5304XP0.5
UPC: 611500542978

King Engine Bearings Mazda B6/B6-T/ZM/B3/B5 (Size +0.5) Main Bearing Set

Name: King Engine Bearings Mazda B6/B6-T/ZM/B3/B5 (Size +0.5) Main Bearing Set
Brand: King Engine Bearings
SKU: king-engine-bearings-king-engine-bearings-mazda-b6-b6-t-zm-b3-b5-size-0-5-main-b-t14-4326090
Price: 109.06 USD
Availability: BackOrder

$109.06

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 main bearing set for Mazda B6/B6-T/ZM/B3/B5 engines. Trimetal pMax Black race bearings for improved durability.

Key Features

Fits a range of vehicles including Ford Escort, Kia Rio, Mazda 323, Mazda MX-3, Mazda Miata, Mazda Protege, Mercury Capri, and Mercury Tracer.
Main bearing set for Mazda B6, B6-T, ZM, B3, and B5 engines.
Features King's pMax Black trimetal material for enhanced durability and load capacity.
These are race bearings, suitable for performance engine builds.
Size is +0.5 (0.020 inches undersize), intended for machined crankshaft journals.

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About this part

Product Details

If you're rebuilding the bottom end of your Mazda B6, B6-T, ZM, B3, or B5 engine, or a Ford Escort, Kia Rio, Mazda MX-3, or Mercury Tracer from the early 90s, a solid set of main bearings is crucial. This set from King Engine Bearings is designed for performance applications, featuring their pMax Black trimetal material. This construction offers improved durability and load-carrying capacity compared to standard bearings, making them a strong choice for engines that see harder use.

These are race bearings, meaning they're built to handle more stress than stock. The trimetal construction uses multiple layers of materials to provide a strong, yet compliant bearing surface that works well with the crankshaft. The +0.5 size indicates these bearings are 0.020 inches thicker than standard, intended for crankshafts that have been machined undersize during a rebuild. Always confirm your crankshaft journal size before ordering.