What does the +0.50mm sizing mean for these bearings?

The +0.50mm sizing indicates that these bearings are designed for a crankshaft that has been machined down by 0.50mm. This is typically done to remove wear or minor damage from the original crankshaft journals during an engine rebuild.

What is a bimetal aluminum base construction?

A bimetal construction uses two different materials layered together. In this case, an aluminum base provides a strong foundation, while the bearing surface is designed to handle the friction and loads of the crankshaft's rotation.

Do I need to machine my crankshaft to use these bearings?

Yes, if you are using a +0.50mm bearing set, your crankshaft journals must be machined down by 0.50mm to match the bearing size. Always consult your engine's service manual or a professional mechanic to confirm the correct bearing size and machining requirements for your specific rebuild.

Specifications

Brand: King Engine Bearings
Part #: MB5009AM0.5
UPC: 611500313523

King Engine Bearings Ford Fiesta 1.25I (ZETec/Ecoboost 1.6) (Size +0.50mm) Main Bearing Set

Name: King Engine Bearings Ford Fiesta 1.25I (ZETec/Ecoboost 1.6) (Size +0.50mm) Main Bearing Set
Brand: King Engine Bearings
SKU: king-engine-bearings-king-engine-bearings-ford-fiesta-1-25i-zetec-ecoboost-1-6-s-t14-770460
Price: 63.13 USD
Availability: BackOrder

$63.13

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Fits 2011-2019 Ford Fiesta. King Engine Bearings main bearing set with bimetal aluminum base construction.

Key Features

Fits 2011-2019 Ford Fiesta and 2013-2014 Ford Fusion.
Main bearing set for the 1.25I (Zetec/Ecoboost 1.6) engine.
Features a bimetal construction with an aluminum base.
This set is sized +0.50mm, intended for use with a machined crankshaft.

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About this part

Product Details

If you're rebuilding the bottom end of your 2011-2019 Ford Fiesta, a fresh set of main bearings is crucial. These bearings sit between the crankshaft and the engine block, supporting the rotating assembly and handling significant loads. This set from King Engine Bearings is specifically made for the 1.25I (Zetec/Ecoboost 1.6) engine, ensuring a proper fit for your rebuild.

Constructed with a bimetal design, these bearings utilize an aluminum base. This material choice helps manage heat and provides a solid foundation for the bearing surface. This particular set is sized at +0.50mm, meaning it's intended for use when the crankshaft journals have been machined down by 0.50mm to clean up wear or damage. Using the correct bearing size is essential for maintaining proper oil clearance and ensuring the longevity of your engine rebuild.