What material are these main bearings made from?

These main bearings are made from a tri-metal copper-based material. They also feature a Tri-M+ enhanced babbit overlay for improved performance and durability.

Are these bearings suitable for a high-performance engine rebuild?

Yes, these bearings are designed for medium-load engines and are a popular choice for engine rebuilds. Their specialized construction aims to reduce friction and wear in critical areas.

What is the purpose of the babbit overlay on these bearings?

The babbit overlay is a soft metal layer that provides excellent conformability and embeddability. This helps to absorb minor imperfections in the crankshaft journal and reduce friction, contributing to smoother operation and longer bearing life.

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Specifications

Brand: King Engine Bearings
Part #: MB5803CA
UPC: 611500598364

King Engine Bearings BMW S65B40A Crankshaft Main Bearing Set (Set of 5)

Name: King Engine Bearings BMW S65B40A Crankshaft Main Bearing Set (Set of 5)
Brand: King Engine Bearings
SKU: king-engine-bearings-king-engine-bearings-bmw-s65b40a-crankshaft-main-bearing-se-t14-208033
Price: 228.70 USD
Availability: InStock

$228.70

Only 2 left in stock

Fits 2008-2013 BMW M3. King Engine Bearings crankshaft main bearing set. Features tri-metal copper-based material for improved durability.

Key Features

Fits 2008-2013 BMW M3.
Includes a set of 5 crankshaft main bearings.
Constructed with a tri-metal copper-based material.
Features a Tri-M+ enhanced babbit overlay.
Suitable for medium-load engines.

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About this part

Product Details

This set includes five crankshaft main bearings from King Engine Bearings, specifically made for the S65B40A engine found in the 2008-2013 BMW M3. These bearings are crucial for the health of your engine, as they sit between the crankshaft and the engine block, reducing friction and wear in a high-stress area.

King Engine Bearings specializes in this exact component, and this set uses a tri-metal copper-based material. This construction, combined with their Tri-M+ enhanced babbit overlay, is well-suited for engines that experience medium loads, offering a solid balance of performance and longevity. If you're rebuilding the bottom end of your M3 or addressing main bearing wear, these are a popular choice for their specialized construction.