OE replacment Bi-metal For PERKINS 400 SERIES - MB4522SM

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King Bearings' SM Series features the strongest Aluminum based alloy at King (by adding Manganese and Chromium to the base layer). Tailored for high-load applications, it serves as an exceptional Lead-free OE replacement bearing with high wear resistance properties.
Commonly use for high-load applications requiering high wear resistance properties
Crankshaft Dim. Housing Dim. Length Thickness
0.00 / 0.00 mm
0.0000 / 0.0000 inch
72.03 / 0.00 mm
2.8359 / 0.0000 inch
19.5 mm
0.768 inch
1.987 mm
0.0782 inch
Main Bearing Set For PERKINS 400 SERIES - MB4522SM
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Performance features

Material features

Tech Features

Aluminum Based
aluminum base
Bi Metal Aluminum material

Lead free Aluminum based material used for low to heavy load engines


An aluminum alloy strengthened by addition of Manganese and Chromium (Mn, Cr), Used for high load applications.

Lead free
Lead Free
Environmentally safe composite

A lead-free bearing material prioritizes environmental sustainability and safety, utilizing alternative compounds to achieve optimal performance in diverse applications.

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