What does '.50mm Oversized' mean for these bearings?

This means the bearings are manufactured to be 0.50mm larger in diameter than standard. They are intended for use when the crankshaft journals have been machined down by 0.50mm to clean up wear or damage, ensuring a precise fit.

Do these bearings come with installation hardware?

This listing is for the main bearing set only. It does not include any additional hardware or installation tools. You will need to consult your vehicle's service manual for specific installation requirements.

Are these bearings suitable for a stock engine rebuild?

While these bearings are well-built and offer improved durability, they are specifically designed for high-performance applications. For a standard, stock engine rebuild, you might consider a standard-size bearing set unless your crankshaft journals have been machined.

ACL Mazda B6/BP/BP-T 1.6/1.8L .50mm Oversized High Performance Main Bearing Set

Specifications

Brand: ACL
Part #: 5M8353H-.50
UPC: 9315726152881

ACL Mazda B6/BP/BP-T 1.6/1.8L .50mm Oversized High Performance Main Bearing Set

Name: ACL Mazda B6/BP/BP-T 1.6/1.8L .50mm Oversized High Performance Main Bearing Set
Brand: ACL
SKU: acl-acl-mazda-b6-bp-bp-t-1-6-1-8l-50mm-oversized-high-performance-main-bearing-s-t14-45834
Price: 79.86 USD
Availability: InStock

$79.86

Only 7 left in stock

ACL Mazda B6/BP/BP-T 1.6/1.8L .50mm Oversized High Performance Main Bearing Set. These bearings are built to handle increased loads for performance engines.

Key Features

Fits Kia Rio (2001-2005), Sephia (1994-1997), Mazda 323 (1986-1994), MX-3 (1992-1995), Miata (1990-1997, 1999-2005), Protege (1990-2001), and Mercury Capri (1991-1994).
Main bearing set designed for high-performance applications.
Features a .50mm undersize for use with machined crankshaft journals.
Constructed with advanced materials for improved durability and reduced friction.
Helps maintain proper crankshaft support under increased engine loads.

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Will this fit your vehicle?

Product Details

200,000 psi tensile strength puts these ACL main bearings well above stock hardware. If you're building a performance engine for your Mazda B6, BP, or BP-T 1.6L or 1.8L, or a compatible Kia, Mercury, or even a Mazda Miata, these bearings are a solid choice. They're designed to handle the extra stress and heat that comes with increased power output, ensuring your crankshaft stays properly supported.

These are a .50mm oversized set, meaning they are intended to be used when the crankshaft journals have been machined down by 0.50mm to clean them up or account for wear. This allows for a fresh, precise fitment. ACL uses advanced materials and manufacturing processes to create bearings that offer improved durability and reduced friction compared to standard bearings. This means better oil flow and a more consistent cushion between your crankshaft and the engine block, which is crucial for longevity under demanding conditions.

When installing these bearings, it's important to ensure your crankshaft journals are properly prepped and measured to confirm they are within the correct tolerance for the .50mm undersize. Always refer to your vehicle's specific service manual for detailed installation procedures and torque specifications.