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King Engine Bearings MB7776SI0.75 Main Bearing Set BMW Oversize - N52 N53 N55 B30A 0.75mm

(BMW X5 2001-18, 328i 2007-13, X3 2004-17, Z4 2003-16, Z3 2001-02, 335i 2007-15, 325i 2006, 2011-13, 328i xDrive 2009-13, 330i 2001-07 + 49 more models)

Part of: King Engine Bearings Main Bearing Set Oversize

Other options in this family: King Engine Bearings MB5835SI0.5 King Engine Bearings MB5557SI0.75 King Engine Bearings MB4102SI0.25 King Engine Bearings MB5280SI0.5 King Engine Bearings MB5770SI0.25

Manufacturer

Picture for manufacturer King Engine Bearings

Part Number

MB7776SI0.75
12 reviews
Sale Price

$94.40

Estimated ship date Monday, November 23

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Product Details

The King Engine Bearings MB7776SI0.75 is a complete main bearing set designed for BMW B30A family inline-6 engines, including the N52 B30A, N53 B30A, and N55 B30A. This is a 0.75mm oversize bearing set intended for use with reground or worn crankshafts that require undersized journal dimensions to restore proper oil clearances.

King manufactures these bearings using a bimetal aluminum-silicon construction, combining a steel backing with an aluminum-silicon alloy overlay. This material combination delivers excellent fatigue strength, superior corrosion resistance, and strong conformability — critical for high-revving BMW performance engines that demand tight tolerances and reliable long-term durability.

Key Features:

  • Bimetal construction: aluminum-silicon alloy overlay on steel backing
  • 0.75mm oversize for use with reground crankshafts
  • Designed for BMW N52 B30A, N53 B30A, and N55 B30A engines
  • High fatigue load capacity suitable for performance and daily-driver applications
  • Precision manufactured to OEM tolerance specifications
  • Excellent corrosion and seizure resistance
  • Full main bearing set included

King Engine Bearings is an OEM-level supplier trusted by professional engine builders worldwide. The MB7776SI0.75 is an ideal choice for engine rebuilders restoring BMW inline-6 engines to factory or better-than-factory performance standards.

Products specifications

Fits

BMW X5 2001-18, 328i 2007-13, X3 2004-17, Z4 2003-16, Z3 2001-02, 335i 2007-15, 325i 2006, 2011-13, 328i xDrive 2009-13, 330i 2001-07, 535i 2008-16, 528i 2008-11, X6 2008-19, 330Ci 2001-06, 530i 2001-10, 2012-13, 535i xDrive 2009-16 + 43 more models

Undersize

0.75

Material

bimetal (aluminum silicon base)

Flange Oversize

FL STD

Title

King Bearings

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