King Engine Bearings MB5784SI Main Bearings for 2012-2018 BMW N20B20 2.0L

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Product Specification:

SKU:KINGMB5784SI

MPN: MB5784SI

UPC: 611500591297

Weight: 0.8 lb

Inventory: 70

Type: Bearings

Vehicle Fitment

2012-2018 BMW 320i (N20B20 2.0L I4)
2012-2016 BMW 328i / 328i xDrive (N20B20 2.0L I4)
2014-2016 BMW 428i / 428i xDrive / 428i Gran Coupe (N20B20 2.0L I4)
2014-2016 BMW 228i / 228i xDrive (N20B20 2.0L I4)
2012-2016 BMW 528i / 528i xDrive (N20B20 2.0L I4)
2013-2017 BMW X3 sDrive28i / xDrive28i (N20B20 2.0L I4)
2013-2018 BMW Z4 2.0i (N20B20 2.0L I4)
2015-2018 BMW X4 sDrive28i / xDrive28i (N20B20 2.0L I4)

Features

King SI-Series bi-metal aluminum/silicon main bearings
Lead-free construction with high durability and load capacity
Upper grooved design for improved lubrication flow
OE-replacement fitment for BMW N20B20 engines
Stable oil film creation to reduce wear and vibration
Precision wall thickness - reliable standard clearance
Suitable for daily drivers and rebuilt engine installations
Standard size matches OEM crankshaft journal dimensions

Specifications

Part Number: MB5784SI
Brand: King Engine Bearings
Series: SI-Series Main Bearings
Engine Fitment: BMW N20B20 2.0L I4
Material: Bi-metal aluminum with silicon alloy
Bearing Type: Main crankshaft bearings (5 pairs)
Size: Standard (STD)
Oil Groove: Upper oiling groove for enhanced lubrication

Included Components

5x Pair King SI-Series Main Crankshaft Bearings (Standard Size)

Product Description

The **King Engine Bearings MB5784SI** main bearing set is designed as a direct OE-replacement for the **BMW N20B20 2.0-liter four-cylinder engine** - a common turbocharged motor found across multiple BMW 3-, 4-, 5-series, X-series, and Z4 models. These SI-Series bearings use a bi-metal aluminum/silicon blend that provides excellent wear resistance and stability under normal and high-load conditions, making them suitable for everyday driving and engine rebuilds.

Built to meet OEM journal specifications, the MB5784SI set includes five pairs of main crankshaft bearings with upper lubrication grooves to promote consistent oil flow and stable oil film throughout the engine's operating range. This helps extend crankshaft life and reduce vibration or noise compared with worn bearings. The standard size design fits crankshafts that have not been machined undersize or oversized, and works with stock clearances for reliable performance in BMW engines equipped with the N20B20 platform.