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King Engine Bearings MB5278AM0.5 Main Bearing Set Ford Aluminum - 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)

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

MB5278AM0.5
11 reviews
Sale Price

$36.31

2 left at this price

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Usually delivered within 2 days

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Product Details

The King Engine Bearings MB5278AM0.5 is a complete main bearing set designed specifically for Ford 2.3-liter (140 cubic inch) inline four-cylinder engines. This precision-engineered bearing set provides reliable protection for your engine's crankshaft, ensuring smooth operation and long service life.

Material Construction:

  • Bi-metal aluminum construction meeting SAE-783 specifications
  • Standard aluminum-based material optimized for low to medium load applications
  • Excellent conformability and embeddability characteristics
  • 0.5mm (.020") oversize for crankshaft journal restoration

Key Features:

  • Complete main bearing set for all main journals
  • Precision manufactured to OEM tolerances
  • Ideal for standard rebuilds and performance applications
  • Compatible with Ford 2.3L inline-four engines found in Mustang II, Pinto, Ranger, and other applications

King Engine Bearings is known for manufacturing high-quality engine bearings that meet or exceed OEM specifications. The MB5278AM0.5 provides the durability and performance needed for both stock rebuilds and upgraded engine applications.

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)

Flange Oversize

FL ON MAX

Undersize

0.5

Prop 65

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

Title

King Bearings

Great price, lowest shipping

East to find and purchase.

Super fast website. Easy checkout for new customers. Best Price from a reputable site. Good job.

Easy, quick, convenient. What else could i ask for? Nothing! Thanks guys.

Search to ID the right part looks good so I bought. Sure hope it fits!

Placing an order went very smoothly. Thanks.

Good

Easy checkout and could actually FIND the part. The only other thing I would want is a install picture. Just to make sure I was buying the right item.

Great priced items. was WAY under what others wanted. shipped fast also. A+ seller. I will buy from again.

Glad you carried these items

Order delivered in 3 business days, packed well, got exactly what I ordered, can't ask for anything more at this point. This is exactly how eCommerce should be done.

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