What is the significance of the .026 size for these bearings?

The .026 designation indicates that these bearings are undersized by 0.026 inches. This is typically used when the crankshaft journals have been machined down to a specific undersize to correct wear or out-of-round conditions.

What is PMaxBlack technology?

PMaxBlack is a proprietary technology from King Engine Bearings that enhances the bearing's ability to withstand higher loads. It's designed to improve durability and performance under demanding engine conditions.

Do these bearings come with installation hardware?

This product listing is for the set of 5 crankshaft main bearings only. Installation hardware, such as main bearing bolts, is typically sold separately and should be replaced with new ones during engine assembly.

Specifications

Brand: King Engine Bearings
Part #: MB5803XP.026
UPC: 611500607219

King Engine Bearings BMW S65B40A (Size .026) Crankshaft Main Bearings Set of 5

Name: King Engine Bearings BMW S65B40A (Size .026) Crankshaft Main Bearings Set of 5
Brand: King Engine Bearings
SKU: king-engine-bearings-king-engine-bearings-bmw-s65b40a-size-026-crankshaft-main-b-t14-392723
Price: 453.34 USD
Availability: BackOrder

$453.34

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Fits 2008-2013 BMW M3. King Engine Bearings crankshaft main bearings set (.026 size) for S65B40A engines. Built for superior load capacity.

Key Features

Fits 2008-2013 BMW M3.
Set of 5 crankshaft main bearings for the S65B40A engine.
Features King's PMaxBlack technology for superior load capacity.
Includes Radialock design for optimal crush height.
Constructed with a tri-metal copper-based material.
This set is .026 inches undersize for crankshaft machining.

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About this part

Product Details

If you're rebuilding the engine in your 2008-2013 BMW M3, especially the high-revving S65B40A V8, getting the crankshaft main bearings right is crucial. These bearings from King Engine Bearings are designed to handle the demands of that engine, ensuring smooth rotation and proper oil clearance for the crankshaft.

King specializes in bearings, and these are built with a tri-metal copper-based material for a solid foundation. They feature PMaxBlack technology, which helps them handle higher loads without failing, and Radialock design to maintain the optimal crush height during installation. This means they're well-built to support the crankshaft's rotation reliably.

This set is specifically sized at .026 inches undersize, which is important if you're machining your crankshaft to a specific undersize. Always refer to your engine's service manual for the correct bearing size and installation procedures.