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

The '+0.25mm' indicates that these bearings are designed for use when the crankshaft journals have been machined down by 0.25mm. This is a common practice during engine rebuilds to clean up wear or imperfections on the crankshaft.

What is the advantage of a bimetal bearing construction?

Bimetal bearings, like these with an aluminum-based alloy, are known for their good heat dissipation and wear resistance. This construction helps them perform reliably under the loads and temperatures experienced in an engine's bottom end.

Are these bearings a direct replacement for all Mazda 626 models?

These bearings are a direct fit for the 1986-1992 Mazda 626 models equipped with the F8 engine. It's important to confirm your specific engine code before purchasing to ensure compatibility.

Specifications

Brand: King Engine Bearings
Part #: MB5528AM1.25
UPC: 611500200526

King Engine Bearings Mazda 626 F8/(Size +0.25mm) Main Bearing Set

Name: King Engine Bearings Mazda 626 F8/(Size +0.25mm) Main Bearing Set
Brand: King Engine Bearings
SKU: king-engine-bearings-king-engine-bearings-mazda-626-f8-size-0-25mm-main-bearing--t14-770785
Price: 52.48 USD
Availability: BackOrder

$52.48

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Fits 1986-1992 Mazda 626. King Engine Bearings main bearing set with bimetal construction for improved durability.

Key Features

Fits 1986-1992 Mazda 626, 1989-1992 Ford Probe, and 1988-1992 Mazda MX-6 with the F8 engine.
Main bearing set designed for engine rebuilding applications.
Features a bimetal construction with an aluminum-based alloy for durability.
This set is sized +0.25mm, meaning it's for use with crankshaft journals machined down by 0.25mm.

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About this part

Product Details

If you're rebuilding the bottom end of your 1986-1992 Mazda 626 with the F8 engine, a fresh set of main bearings is crucial. These bearings sit between your crankshaft and the engine block, supporting the rotating assembly and handling significant loads. King Engine Bearings offers this set specifically for your 626, ensuring a proper fit and reliable performance.

This main bearing set is constructed with a bimetal design, meaning it uses an aluminum-based alloy. This material choice helps manage heat and wear effectively, which is important for the longevity of your engine rebuild. The set is also sized at +0.25mm, indicating it's intended for use when the crankshaft journals have been machined down by 0.25mm to clean up any imperfections or wear.

When installing these bearings, always ensure the crankshaft journals are clean and within the specified machining tolerance. Using the correct oil clearance is vital for proper lubrication and bearing life. This set is a solid option for anyone looking to restore their Mazda 626 engine with dependable components.