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King Engine Bearings MB7720AM0.25 Main Bearing Set BMW M20 M50 M52 0.25mm Undersize

(BMW 328i 1996-2000, X3 2007-10, Z4 2006-10, Z3 1997-2000, 325i 1987-97, 2006-10, 528i 1996-2000, 320i 1992-95, 525i 1989-95, 2008-09 + 13 more models)

Manufacturer

Picture for manufacturer King Engine Bearings

Part Number

MB7720AM0.25
10 reviews
Sale Price

$126.63

Estimated ship date Saturday, November 28

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Product Details

The King Engine Bearings MB7720AM0.25 is a complete main bearing set designed for BMW inline-six engines including the M20B20, M20B25/27, M50B20/25, and M52B20/25/28 families. This set is sized at 0.25mm undersize, making it the ideal choice for engines that have undergone standard crankshaft grinding during a rebuild.

Material & Construction:

  • Bi-Metal Aluminum Construction – Features a standard aluminum-based bearing material equivalent to SAE-783, engineered for reliable performance in low to medium load applications
  • Aluminum overlay provides excellent conformability and embeddability, helping protect the crankshaft from minor surface imperfections and debris
  • Steel backing for structural rigidity and precise fitment within the main bearing bores
  • Precision-manufactured to tight tolerances for consistent oil film thickness and proper clearances

Key Specifications:

  • Part Number: MB7720AM0.25
  • Undersize: 0.25mm
  • Material: Bi-Metal – Aluminum (SAE-783 equivalent)
  • Application: BMW M20B20, M20B25, M20B27, M50B20, M50B25, M52B20, M52B25, M52B28

King Engine Bearings is a globally recognized manufacturer known for producing high-quality engine bearings used in OEM and performance applications worldwide. This main bearing set is a dependable solution for engine rebuilds requiring a 0.25mm undersize crankshaft journal diameter.

Products specifications

Fits

BMW 328i 1996-2000, X3 2007-10, Z4 2006-10, Z3 1997-2000, 325i 1987-97, 2006-10, 528i 1996-2000, 320i 1992-95, 525i 1989-95, 2008-09, 323i 1997-2001, 325is 1987-95, 325e 1984-87, 323Ci 2000, 528e 1982-88, 325iX 1988-91, 328is 1996-99 + 6 more models

Undersize

0.25

Flange Oversize

FL O/S 0.2 mm

Material

bimetal (aluminum base)

Shaft UnderSize

0.25mm

Housing Diameter

65.02 / 65.00 mm || 2.560 / 2.559 inch

STD Max Thickness

2.494

STD Shaft Diameter

59.99 / 59.97 mm || 2.362 / 2.361 inch

Wish Canada or Amazon.ca carried these anchors. Maybe you could look into that. A follow-up would be appreciated since the information does not show the weight of your item, hoping it is only 4 pounds for us old goats :)

Best prices I could find anywhere! Fast shipping. Will definitley buy from again.

So far good Fast shipping. Order was as expected

Great prices and easy payment options.

Seems quick and uncomplicated

Autoplicity had the best price on the item on the ski rack I needed! I ordered it on a Friday and it was delivered the following Wednesday.

right parts, right price

so far, very easy transaction

Quick and easy! Love the Amazon pay feature!

So far a great website with a great price and free shipping. Looking forward to receiving my order!

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