What does the +0.25mm sizing mean for these bearings?

The +0.25mm designation indicates that these bearings are designed for a crankshaft that has been machined down by 0.25mm. This is a common practice during engine rebuilds to restore proper clearances when the original crankshaft has wear or has been ground undersize.

What is the Manganx strengthened aluminum material?

Manganx is a proprietary strengthening process for aluminum alloys used by King Engine Bearings. It's designed to enhance the durability and load-bearing capacity of the aluminum bi-metal material, contributing to a longer service life for the bearings.

Are these bearings compatible with all N47 engines?

This specific main bearing set is designed for the N47 D20 A/B/C/D and N47 C20 A engine codes. It's important to verify your engine's specific code to ensure compatibility before installation.

King Engine Bearings BMW N47 D20 A/B/C/D/N47 C20 A (Size +0.25mm) Main Bearing Set

Specifications

Brand: King Engine Bearings
Part #: MB5780SM0.25
UPC: 611500592362

King Engine Bearings BMW N47 D20 A/B/C/D/N47 C20 A (Size +0.25mm) Main Bearing Set

Name: King Engine Bearings BMW N47 D20 A/B/C/D/N47 C20 A (Size +0.25mm) Main Bearing Set
Brand: King Engine Bearings
Price: 90.23 USD
Availability: InStock

$90.23

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Fits 2014-2018 BMW 328d. King Engine Bearings Main Bearing Set with lead-free composite and strengthened aluminum for improved durability.

Key Features

Fits 2014-2018 BMW 328d, 328d xDrive, and 2015-2017 X3.
Main bearing set for BMW N47 D20 A/B/C/D and N47 C20 A engines.
Features a lead-free, environmentally safe composite material.
Utilizes Manganx strengthened aluminum bi-metal construction.
This is a +0.25mm undersize bearing set, for use on machined crankshafts.

⚠️ 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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Fits these vehicles

BMW 328d 2014-2018
BMW 328d xDrive 2014-2018
BMW X3 2015-2017

Product Details

If you're rebuilding the engine in your 2014-2018 BMW 328d, 328d xDrive, or 2015-2017 X3, this Main Bearing Set from King Engine Bearings is a solid option. These bearings are specifically made for the N47 D20 A/B/C/D and N47 C20 A engines, ensuring a proper fit during your rebuild.

King specializes in bearings, and this set uses a lead-free composite material that's environmentally safe, combined with a Manganx strengthened aluminum bi-metal construction. This combination aims for durability and reliable performance within the engine's rotating assembly. These are a +0.25mm undersize set, meaning they are intended for crankshafts that have been machined to this specific size during an engine rebuild.