What does the '+1.0' size designation mean for these bearings?

The '+1.0' designation indicates that these bearings are 0.040 inches larger in diameter than standard size bearings. This size is typically used when the crankshaft journals have been machined to a larger diameter during an engine rebuild to correct wear or damage.

What is the advantage of the bimetal aluminum silicon construction?

The bimetal construction with an aluminum silicon base offers good heat dissipation and wear resistance. This is important for main bearings, which are critical components that support the rotating crankshaft and must withstand significant stress and friction.

Are these bearings suitable for a stock engine rebuild?

While these are performance bearings, their bimetal construction and precise sizing make them a solid option for stock engine rebuilds where durability and reliability are key. They are particularly well-suited if your engine build involves any modifications or if you plan to drive the vehicle more aggressively than stock.

Specifications

Brand: King Engine Bearings
Part #: MB5442SI1.0
UPC: 611500520099

King Engine Bearings Ford/Mazda 2.0L/2.3L Duratec (Size +1.0) Performance Main Bearing Set

Name: King Engine Bearings Ford/Mazda 2.0L/2.3L Duratec (Size +1.0) Performance Main Bearing Set
Brand: King Engine Bearings
SKU: king-engine-bearings-king-engine-bearings-ford-mazda-2-0l-2-3l-duratec-size-1-0--t14-306021
Price: 82.64 USD
Availability: BackOrder

$82.64

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King Engine Bearings performance main bearing set for Ford/Mazda 2.0L/2.3L Duratec engines. Size +1.0.

Key Features

Fits Ford Escape (2005-2008), Ford Focus (2003-2011), Ford Fusion (2006-2009, 2014-2016), Mazda 3 (2004-2016), and many other Ford/Mazda vehicles with 2.0L/2.3L Duratec/MZR engines.
This is a +1.0 size bearing set, meaning it is 0.040 inches larger than standard size.
Constructed with a bimetal (aluminum silicon base) material for improved heat and wear management.
Designed for performance applications, supporting the crankshaft in Ford/Mazda L3 and L3-VDT MZR engines.

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About this part

Product Details

King Engine Bearings is well-known for making solid engine components, and this performance main bearing set is no exception. If you're rebuilding the bottom end of your Ford or Mazda with a 2.0L or 2.3L Duratec or MZR engine, these bearings are designed to handle the demands of performance use.

This set is built with a bimetal construction, using an aluminum silicon base. This material choice helps manage heat and wear, which is crucial for main bearings that support the crankshaft. These are a +1.0 size, meaning they are 0.040 inches larger in diameter than standard size bearings, intended for use when the crankshaft journals have been machined to a larger size during an engine rebuild. They fit a wide range of vehicles, including popular models like the Ford Focus, Mazda 3, and Ford Fusion.

When you're putting an engine back together, especially one that's been modified or is seeing harder use, using bearings that can keep up is important. These King bearings offer a well-built option for your build.