What does the '+1.0mm' sizing mean for these bearings?

The '+1.0mm' designation indicates that these bearings are intended for use with a crankshaft that has been machined down by 1.0mm. This is a common practice when the original crankshaft journals are worn or damaged and need to be reconditioned to a larger size.

What are these bearings made of?

These bearings feature a bimetal construction with an aluminum base. This material choice is common for engine bearings due to its good wear resistance and compatibility with engine oils.

Is this the same as the MB5139AM part number?

This MB5226AM1.0 set is an optional replacement for the MB5139AM. The key difference is the sizing; this set is specifically for applications requiring the +1.0mm crankshaft journal size.

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Est. 1957

Specifications

Brand: King Engine Bearings
Part #: MB5226AM1.0
UPC: 611500239441

King Engine Bearings Mazda 626 F8 (Size +1.0mm) Main Bearing Set

Name: King Engine Bearings Mazda 626 F8 (Size +1.0mm) Main Bearing Set
Brand: King Engine Bearings
SKU: king-engine-bearings-king-engine-bearings-mazda-626-f8-size-1-0mm-main-bearing-s-t14-770547
Price: 47.72 USD
Availability: BackOrder

$47.72

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King Engine Bearings main bearing set for Mazda 626 F8. Size +1.0mm.

Key Features

Fits Mazda 626 F8.
Main bearing set for engine rebuilding.
Size is +1.0mm, intended for a machined crankshaft.
Constructed with a bimetal design and aluminum base.

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About this part

Product Details

If you're rebuilding the engine in your Mazda 626 with the F8 engine, this King Engine Bearings Main Bearing Set is what you'll need. These bearings are a direct replacement for your stock main bearings, but they come in a +1.0mm size, meaning they're designed to be used with a crankshaft that has been machined down by 1.0mm. This is a common step when dealing with worn or damaged crankshaft journals.

King uses a bimetal construction with an aluminum base for these bearings. This type of material is well-suited for the demands of engine operation, offering good wear characteristics and compatibility with various oil types. This set is an optional replacement for the MB5139AM model, specifically when you need the +1.0mm sizing for your crankshaft.