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King Engine Bearings MB5578AM0.25 Main Bearing Set Oversize for BMW Engines - 0.25mm M42/M44

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

MB5578AM0.25
12 reviews
Sale Price

$49.76

3 left at this price

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Usually delivered within 2 days

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Product Details

The King Engine Bearings MB5578AM0.25 is a precision-engineered main bearing set designed specifically for BMW M42 and M44 4-cylinder engines, commonly found in 318i and 318is models. This set features a 0.25mm (0.010") oversize dimension, making it ideal for engine rebuilds where the crankshaft has been machined to accommodate wear.

Key Features:

  • 0.25mm oversize bearings for machined crankshafts
  • High-performance tri-metal construction with aluminum alloy backing
  • Advanced pMax Black coating for enhanced durability and friction reduction
  • Precision tolerances for optimal oil clearance and performance
  • Complete main bearing set for full engine rebuild
  • Manufactured to OE specifications with performance enhancements

King Engine Bearings are recognized worldwide for their quality and performance in both street and racing applications. The pMax Black coating provides superior protection during critical break-in periods and extends bearing life under high-stress conditions. This bearing set includes all main bearings required for a complete crankshaft installation.

Products specifications

Material

bimetal (aluminum base)

Undersize

0.25

Flange Oversize

FL O/S 0.2 mm

Very quick and easy

Good service! Really helpful.

Great service. fast shiping!

Good product and awesome delivery. Thank you

Good pricing. Order processing is fast and easy.

easy and inexpensive!

orderd part it is hard to find don't think you can get it but I will try

Sorting through part numbers is a bit of a pain - better organization would be great.

Fast easy check out.

Easy ordering process!

easy site to nav and order. quick shipping and the very best prices i found on the net. whats not to like about this company<br>thanks!

For a first time buyer the experience was great and easy to do. I see now after I ordered mt part that you want me to agree to you sending me another e-mail to make sure I'm satisfied with my order. One of the other benefits I am told it I will receive a

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