What does the +0.25mm sizing mean for these rod bearings?

The +0.25mm sizing indicates that these bearings are intended for use when the connecting rod journals on your crankshaft have been machined down by 0.25mm. This is a common step during engine rebuilding to ensure a fresh surface for new bearings.

What type of engine is this bearing set best suited for?

This bearing set features a bi-metal aluminum construction with a lead-free composite material, making it well-suited for engines that experience low to medium loads. It's a reliable choice for many standard passenger car applications.

Are these bearings environmentally friendly?

Yes, these bearings are constructed with a lead-free composite material, which is considered environmentally safe. This aligns with modern environmental standards for engine components.

Specifications

Brand: King Engine Bearings
Part #: CR4002AM0.25
UPC: 611500122415

King Ford/Kia/Mazda DOHC 16 Valve/SOHC 16 Valve/SOHC 8 Valve (Size +0.25) Rod Bearing Set

Name: King Ford/Kia/Mazda DOHC 16 Valve/SOHC 16 Valve/SOHC 8 Valve (Size +0.25) Rod Bearing Set
Brand: King Engine Bearings
SKU: king-engine-bearings-king-ford-kia-mazda-dohc-16-valve-sohc-16-valve-sohc-8-valv-t14-280151
Price: 22.34 USD
Availability: InStock

$22.34

Only 1 left in stock

King Ford/Kia/Mazda DOHC 16 Valve/SOHC 16 Valve/SOHC 8 Valve (Size +0.25) Rod Bearing Set. Lead-free composite for low to medium-load engines.

Key Features

Fits many Ford, Mazda, and Mercury vehicles.
Rod bearing set is sized +0.25mm for use with reconditioned crankshaft journals.
Features a lead-free, environmentally safe composite material.
Bi-metal aluminum construction is ideal for low to medium-load engines.
Specialized bearing design from a company focused on engine bearings since 1960.

⚠️ 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

When you're rebuilding the bottom end of your engine, getting the right rod bearings is crucial for smooth operation and longevity. This set from King Engine Bearings is specifically sized at +0.25mm, meaning it's intended for use when the crankshaft journals have been machined down by that amount. These bearings are built with a lead-free, environmentally safe composite material, making them a solid choice for many Ford, Mazda, and Mercury engines, including popular models like the Mazda Miata, Ford Escort, and Mazda Protege.

King specializes in bearings, and this set features a bi-metal aluminum construction. This design is well-suited for engines that don't experience extreme loads, offering reliable performance for everyday driving and moderate use. The +0.25mm sizing indicates these are meant for engines where the connecting rod journals have been reconditioned to a specific undersize, a common practice during engine overhauls to ensure a fresh, perfectly matched surface for the new bearings.