What does the +0.75mm size mean for these bearings?

The +0.75mm sizing indicates that these bearings are intended for use when the crankshaft journals have been machined down by 0.75mm. This is typically done to clean up worn or damaged journals or to prepare them for new bearings after an engine rebuild.

What is the advantage of the specialized overlay material?

The specialized overlay material is designed to help the bearings withstand the significant pressures and heat generated within the engine. This is particularly important during the break-in process of a newly rebuilt engine, ensuring proper lubrication and wear protection.

Are these bearings sold individually or as a set?

This product is a main bearing set, meaning it includes all the necessary main bearings required for a complete engine rebuild of the specified BMW engines.

Specifications

Brand: King Engine Bearings
Part #: MB7720AM0.75
UPC: 611500209338

King Engine Bearings BMW M20B20/M20B25/27/M50B20/25/M52B20/25/28 (Size +0.75mm) Main Bearing Set

Name: King Engine Bearings BMW M20B20/M20B25/27/M50B20/25/M52B20/25/28 (Size +0.75mm) Main Bearing Set
Brand: King Engine Bearings
SKU: king-engine-bearings-king-engine-bearings-bmw-m20b20-m20b25-27-m50b20-25-m52b20--t14-771097
Price: 124.76 USD
Availability: BackOrder

$124.76

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King Engine Bearings BMW M20/M50/M52 Main Bearing Set (+0.75mm). A solid option for engine rebuilds.

Key Features

Main bearing set for BMW M20, M50, and M52 engines.
Size is +0.75mm, intended for use with machined crankshaft journals.
Features a specialized overlay material for durability.
Well-built to handle engine pressures and heat.

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About this part

Product Details

King Engine Bearings is well-known for making solid engine components, and this main bearing set is no exception. If you're rebuilding the engine in your BMW M20B20, M20B25/27, M50B20/25, or M52B20/25/28, these bearings are a critical part of getting your bottom end back in shape.

This set is sized +0.75mm, meaning it's designed to be used when the crankshaft journals have been machined down by 0.75mm to clean them up or account for wear. King uses a specialized overlay material that helps these bearings handle the pressures and heat inside your engine, especially important during the break-in period of a freshly rebuilt engine. They are well-built to handle the demands of these popular BMW engines.