What does the '0.75' in the part number mean?

The '0.75' indicates that these bearings are 0.75mm undersize. This means they are designed to be used with a crankshaft that has been machined down by 0.75mm during an engine rebuild.

What material are these main bearings made from?

These main bearings are made from a strengthened bimetal aluminum alloy. This material is chosen for its ability to handle the stresses and heat within the engine's bottom end.

Are these bearings a direct replacement for the original equipment?

Yes, these bearings are designed as a direct fit for the specified BMW N47 engines and vehicle models. They are intended to replace the original main bearings when the crankshaft has been machined to the 0.75mm undersize.

King Engine Bearings BMW N47 D20 A/B/C/D / N47 C20 A Main Bearing Set (Size 0.75)

Specifications

Brand: King Engine Bearings
Part #: MB5780SM0.75
UPC: 611500599446

King Engine Bearings BMW N47 D20 A/B/C/D / N47 C20 A Main Bearing Set (Size 0.75)

Name: King Engine Bearings BMW N47 D20 A/B/C/D / N47 C20 A Main Bearing Set (Size 0.75)
Brand: King Engine Bearings
Price: 90.23 USD
Availability: InStock

$90.23

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Order now to reserve yours — we'll ship as soon as stock arrives. Full refund if we're unable to fulfill.

Fits 2014-2018 BMW 328d. This is a main bearing set, size 0.75mm undersize, for the N47 engine.

Key Features

Fits 2014-2018 BMW 328d, 2014-2018 BMW 328d xDrive, and 2015-2017 BMW X3.
This is a main bearing set for the BMW N47 D20 A/B/C/D and N47 C20 A engines.
The bearings are 0.75mm undersize, intended for use with a crankshaft machined to that specification.
Constructed from a strengthened bimetal aluminum alloy for durability.
Direct fit replacement for the specified BMW models.

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Fits these vehicles

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

Product Details

When you're rebuilding the bottom end of your BMW N47 engine, a solid set of main bearings is crucial. This set from King Engine Bearings is specifically for the N47 D20 A/B/C/D and N47 C20 A variants, and it comes in a 0.75mm undersize. This means they're intended for crankshafts that have been machined down by 0.75mm during a rebuild to true them up.

These bearings are constructed from a strengthened bimetal aluminum alloy. This material choice helps them handle the loads and heat generated in the engine's rotating assembly. King Engine Bearings is a well-known name in engine components, and this set is designed to fit right into your BMW's main bearing journals.

If you're in the process of an engine overhaul and your crankshaft has been turned, this 0.75mm undersize main bearing set is what you'll need to get your engine back together correctly.