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King Engine Bearings MB5281SI0.75 Main Bearing Set Ford Oversized - 281 4.6L 0.75mm

(Ford Grand Marquis 1995-2004, F-150 1997-2003, 2009-10, Mustang 1996-2010, Explorer 2002-10, Expedition 1997-2004, F-250 1997-2009 + 20 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

MB5281SI0.75
13 reviews
Sale Price

$72.62

4 left at this price

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Product Details

The King Engine Bearings MB5281SI0.75 is a complete main bearing set engineered for Ford 281 cubic inch (4.6L) engines. This set features King's premium SI (Silicon-Aluminum) alloy bearing material, offering superior wear resistance, conformability, and corrosion resistance compared to standard babbitt or copper-lead bearings — making it an ideal choice for rebuilt or high-performance engines.

The 0.75mm oversize designation means these bearings are intended for use with crankshafts that have been reground 0.75mm undersize, restoring proper oil clearance and ensuring a precise fit during engine rebuilding.

Key Features:

  • Application: Ford 281 cubic inch (4.6L) engines
  • Oversize: 0.75mm — designed for reground crankshafts
  • Bearing Material: Silicon-Aluminum (SI series) alloy for enhanced durability
  • Design: Full set includes all main journal bearings required for a complete rebuild
  • Precision Manufactured: Tight tolerances for optimal oil film and bearing life
  • Corrosion Resistant: SI alloy resists acids and combustion byproducts
  • OEM-quality fit: Manufactured to meet or exceed original equipment specifications

King Engine Bearings is a globally recognized manufacturer of precision engine bearings, trusted by professional engine builders and OEM suppliers worldwide. The MB5281SI0.75 is a reliable choice for any engine rebuilder working on Ford 4.6L applications requiring a 0.75mm oversize main bearing set.

Products specifications

Fits

Ford Grand Marquis 1995-2004, F-150 1997-2003, 2009-10, Mustang 1996-2010, Explorer 2002-10, Expedition 1997-2004, F-250 1997-2009, Explorer Sport Trac 2007-10, E-150 2003-09, E-250 2003-08, E-150 Econoline 1999-2002 + 16 more models

Undersize

0.75

Material

bimetal (aluminum silicon base)

Flange Oversize

FL ON MAX

Great website

Great site. I received my product quickly and it was the product I ordered.

Excellent experience A+

Great prices. Easy ordering.

Easy pleasant transaction so far

cant wait

Good prices so far

thanks

easy site ...

Awesome pricing. Needed Pertonix setup for my wifes 62 Mercury Monterey Convertible S-55.

Great price and fast shipping!!!!

Great price & part in stock & was told would ship today !

no area to provide different billing address for card payment only shipping address, which most ppl no longer live at that address for card holders when originally received that card

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