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King Engine Bearings MB5278AM0.25 Main Bearing Set Ford - 2.3L 140ci L4

(1991-1993 Ford Mustang; 1989-2001 Ford Ranger; 1996-2000 Ford F-100 Ranger; 1998-2001 Mazda B2500; 1985-1989 Merkur XR4Ti)

Manufacturer

Picture for manufacturer King Engine Bearings

Part Number

MB5278AM0.25
10 reviews
Sale Price

$43.64

Estimated ship date Wednesday, November 25

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Product Details

The King Engine Bearings MB5278AM0.25 is a precision-engineered main bearing set designed specifically for Ford 140 cubic inch (2.3 liter) L4 engines. This complete main bearing set provides reliable crankshaft support for your engine rebuild or overhaul project.

Key Features:

  • 0.25mm (0.010") undersize for crankshaft machining and wear compensation
  • Bi-metal aluminum construction equivalent to SAE-783 specification
  • Aluminum-based bearing material optimized for low to medium load applications
  • Precision manufacturing ensures proper oil clearance and crankshaft alignment
  • Complete main bearing set for comprehensive engine rebuild coverage

King Engine Bearings are manufactured to exacting tolerances to ensure optimal performance and longevity. The bi-metal aluminum construction provides excellent conformability and embeddability characteristics, helping to protect your crankshaft while maintaining proper oil film thickness. The 0.25mm undersize dimension allows for crankshaft refinishing while maintaining proper bearing clearances.

Products specifications

Fits

1991-1993 Ford Mustang; 1989-2001 Ford Ranger; 1996-2000 Ford F-100 Ranger; 1998-2001 Mazda B2500; 1985-1989 Merkur XR4Ti

Material

bimetal (aluminum base)

Undersize

0.25

Flange Oversize

FL ON MAX

Prop 65

WARNING: Cancer and Reproductive Harm - www.p65warnings.ca.gov

Title

King Bearings

great prices. shipped out fast

Good

Great price and fast shipping, very satisfied!

Great product - prompt service - helpful customer relations - will use them again and recommend them to others

Easy to navigate and great prices.

Like other customer reviews, so i hope service is consistent.

I didn't get a shipping notice until three days after I got the product. It was exactly what I ordered and did arrive during the proper time frame

So far great!

great deals

I will be back with you guys

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