What does the 0.50 size indicate for these bearings?

The '0.50' in the part number MB5442SI0.5 indicates that these bearings are 0.050 inches undersize. This means they are intended for use when the engine's crankshaft main journals have been machined down by 0.050 inches during an engine rebuild.

Why is a lead-free bearing important?

Lead-free bearings, like this silicon composite set from King, are considered environmentally safer. They are designed to meet stricter environmental regulations while still providing reliable performance for medium-load engines.

What is the benefit of bi-metal aluminum construction?

The bi-metal aluminum construction combines the strength and wear resistance of aluminum with a bearing surface designed for smooth operation. This material choice helps ensure proper oil clearance and longevity for the engine's main bearings.

Specifications

Brand: King Engine Bearings
Part #: MB5442SI0.5
UPC: 611500520075

King Ford/Mazda Duratec 2.0/2.3 DOHC (Size 0.50) Silicon Bi-Metal Aluminum Main Bearing Set

Name: King Ford/Mazda Duratec 2.0/2.3 DOHC (Size 0.50) Silicon Bi-Metal Aluminum Main Bearing Set
Brand: King Engine Bearings
SKU: king-engine-bearings-king-ford-mazda-duratec-2-0-2-3-dohc-size-0-50-silicon-bi-m-t14-261741
Price: 77.94 USD
Availability: BackOrder

$77.94

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King Engine Bearings MB5442SI0.5 main bearing set for Ford/Mazda Duratec 2.0/2.3L engines. Size 0.50. Verified fitment.

Key Features

Fits 2005-2020 Ford, 2004-2013 Mazda, 2017-2020 Lincoln, and 2005-2009 Mercury vehicles with Duratec 2.0L/2.3L DOHC engines.
This is a 0.050 inch undersize main bearing set, intended for use when engine crankshaft journals have been machined to this size.
Constructed from bi-metal aluminum material for durability.
Features a lead-free silicon composite, making it an environmentally safe choice for medium-load engines.
King Engine Bearings is a specialist in engine bearings, founded in 1960 with a focus on quality.

⚠️ CA WARNING: This product can expose you to chemicals known to the State of California to cause cancer and/or birth defects or other reproductive harm. Learn more

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About this part

Product Details

King Engine Bearings has been specializing in engine bearings since 1960, focusing on supplying the highest quality components. This main bearing set, part number MB5442SI0.5, is built with a bi-metal aluminum material and a silicon composite, making it an environmentally safe, lead-free option ideal for medium-load engines like the Ford/Mazda Duratec 2.0L and 2.3L DOHC. This set is specifically sized at 0.050 inches undersize, crucial for engine rebuilds where journals may have been machined.

This set is designed to fit a wide range of Ford, Lincoln, Mercury, and Mazda vehicles, including popular models like the Ford Focus, Ford Fusion, and Mazda 3. The bi-metal construction offers good wear resistance, while the silicon composite helps ensure smooth operation and longevity in these DOHC engines. When rebuilding your engine, using bearings that are precisely sized and made from appropriate materials is key to ensuring proper oil clearance and a healthy powerplant.