King Engine Bearings MB5801SM Main Bearing Set for BMW N63/S63 09-19

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Product Specification:

SKU:KINGMB5801SM

MPN: MB5801SM

UPC: 611500596841

Weight: 1.2 lb

Inventory: 90

Type: Bearings

Vehicle Fitment

2009-2019 BMW 550i/550i xDrive (N63B44)
2010-2017 BMW 550i GT/GT xDrive (N63B44)
2011-2019 BMW 650i/650i xDrive/Gran Coupe (N63B44)
2009-2019 BMW 750i/750i xDrive/750Li/Li xDrive (N63B44)
2015-2019 Alpina B6 xDrive Gran Coupe (N63B44)
2011-2015 Alpina B7/B7 xDrive/B7L/B7L xDrive (N63B44)
2010-2017 BMW X5/X6 50i/xDrive50i (N63B44)
2011-2017 BMW X5 M/X6 M (S63B44) performance variants

Features

Full main crankshaft bearing set
Bi-metal aluminum construction with manganese & chromium reinforcement
Lead-free alloy for environmental compliance
Precision machined for exact OE tolerances
High load capacity for performance or stock engines
Designed for both N63 and S63 crankshafts
Enhanced wear resistance and durability
Standard (STD) size for OEM crankshaft dimensions

Specifications

Brand: King Engine Bearings
Part Number: MB5801SM
Bearing Type: Main crankshaft bearing set
Material: Bi-metal strengthened aluminum alloy
Size: STD (standard OEM housing and shaft dimensions)
Housing Ø: 70.000 mm
Bearing Thickness: ~2.494 mm
Applicable Engines: BMW N63B44 & S63B44 V8 petrol

Included Components

5x pairs main bearings (positions 1-5)

Product Description

The King Engine Bearings MB5801SM Main Bearing Set is a complete OEM-replacement main crankshaft bearing kit engineered for the twin-turbocharged 4.4 L V8 engines found in a wide range of BMW vehicles from 2009 through 2019. These bearings feature a high-strength bi-metal aluminum alloy reinforced with manganese and chromium, providing excellent wear resistance and load-carrying capability whether you're maintaining a stock engine or building one for higher performance use.

Each bearing shell is precision-machined to meet original equipment tolerances, ensuring a precise fit on the crankshaft and in the engine block. This set is designed for standard (STD) crankshaft dimensions and includes five pairs of main bearings covering all main journal positions. Installation is straightforward for experienced mechanics and is ideal during engine rebuilds, crankshaft regrinds, or when restoring engine health after high mileage or performance use.