What does '.025mm oversized' mean for these bearings?

This means the bearings are slightly larger than standard size. They are intended for use when the crankshaft's connecting rod journals have been machined down by 0.025mm to ensure a clean, smooth surface for the new bearings to run on. This is a common practice during engine rebuilding.

Are these bearings suitable for a performance engine build?

Yes, these ACL high-performance rod bearings are a popular choice for engine builds that aim for improved reliability and durability, especially when pushing the engine harder or dealing with higher mileage. Their tri-metal construction offers good strength and oil pressure retention.

Do I need to replace anything else when installing these rod bearings?

When replacing rod bearings, it's highly recommended to also inspect and potentially replace the main bearings and ensure your crankshaft journals are within factory specifications. Always consult your vehicle's service manual for the proper installation procedure and torque settings.

ACL Engine Bearings High Performance Rod Bearing Set 4B8351H

Name: ACL Mazda 4 B6/BP/BP-T 1.6/1.8L .025mm Oversized High Performance Rod Bearing Set
Brand: ACL
SKU: acl-acl-mazda-4-b6-bp-bp-t-1-6-1-8l-025mm-oversized-high-performance-rod-bearing-t14-268399
Price: 51.17 USD
Availability: InStock

ACL Mazda 4 B6/BP/BP-T 1.6/1.8L .025mm Oversized High Performance Rod Bearing Set

$51.17

Only 7 left in stock

ACL Mazda B6/BP/BP-T 1.6/1.8L .025mm Oversized High Performance Rod Bearing Set. Built for improved engine reliability.

Key Features

Fits Kia Rio, Sephia, Mazda 323, MX-3, Miata, Protege, and Mercury Capri.
Rod bearing set is .025mm oversized for use with machined crankshaft journals.
Constructed with a tri-metal material for strength and conformability.
Designed for improved engine reliability and durability.
Suitable for Mazda B6, BP, and BP-T 1.6L and 1.8L engines.

Secure CheckoutFast Shipping631-982-0042

Will this fit your vehicle?

Product Details

200,000 psi tensile strength puts these ACL rod bearings well above stock hardware. When you're rebuilding or refreshing an engine, especially one that sees a lot of miles or is being pushed a bit harder, the bearings are a critical component. These bearings are .025mm oversized, meaning they're designed to be used when the crankshaft journals have been machined down by .025mm to clean them up and ensure a perfect surface for the new bearings to run on. They're built with a tri-metal material that offers excellent strength and conformability, helping to maintain oil pressure and protect your crankshaft.

ACL has been making engine bearings for a long time, and they're known for their well-built parts. This set is a popular choice for tuners and mechanics alike because they offer a solid balance of performance and durability for engines like the Mazda B6, BP, and BP-T found in many popular models. Using a high-performance bearing like this can help extend the life of your engine, especially if you're dealing with higher mileage or planning on increasing the power output.

This set is specifically for the rod bearings. When you're doing an engine rebuild, it's always a good idea to replace both the rod bearings and the main bearings at the same time, and to ensure your crankshaft journals are within spec. Always refer to your vehicle's service manual for the correct installation procedures and torque specifications.