What does '0.75mm undersize' mean for these bearings?

This means the bearings are designed to fit a crankshaft that has been machined down by 0.75mm. It's crucial to match the bearing size to the machined size of your crankshaft for proper oil clearance.

What is the construction of these main bearings?

These bearings are made with a bimetal construction, featuring an aluminum base. This type of construction is known for its good wear resistance and ability to handle engine loads.

Are these bearings sold individually or as a set?

This is a main bearing set, meaning it includes all the necessary bearings for the main journals of your engine's crankshaft.

Specifications

Brand: King Engine Bearings
Part #: MB5528AM0.75
UPC: 611500200427

King Engine Bearings Mazda 626 F8/(Size +0.75mm) Main Bearing Set

Name: King Engine Bearings Mazda 626 F8/(Size +0.75mm) Main Bearing Set
Brand: King Engine Bearings
SKU: king-engine-bearings-king-engine-bearings-mazda-626-f8-size-0-75mm-main-bearing--t14-770783
Price: 52.48 USD
Availability: BackOrder

$52.48

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Fits 1986-1992 Mazda 626. King Engine Bearings main bearing set, 0.75mm undersize, for F8 engines.

Key Features

Fits 1986-1992 Mazda 626, 1989-1992 Ford Probe, and 1988-1992 Mazda MX-6.
Main bearing set for Mazda F8 engines.
Features a bimetal construction with an aluminum base.
This set is 0.75mm undersize, intended for a machined crankshaft.

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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 essential. These bearings sit between your crankshaft and the engine block, supporting the rotating assembly and ensuring smooth operation. King Engine Bearings offers a well-built bimetal aluminum-based bearing set designed to handle the demands of your engine.

This particular set is 0.75mm undersize, meaning it's intended for a crankshaft that has been machined down by that amount. Using the correct size bearing is critical for proper oil clearance, which is key to engine longevity and performance. King's bimetal construction offers good wear resistance and load-carrying capacity, making them a solid option for engine rebuilds.