What is the main function of main bearings in an engine?

Main bearings support the crankshaft within the engine block. They allow the crankshaft to rotate smoothly while maintaining consistent oil clearance, which is crucial for proper lubrication and engine operation.

Does this bearing set come with all the necessary components for installation?

This set includes the main bearings themselves. You will need to ensure your engine block and crankshaft are clean and properly prepped, and you should always refer to the manufacturer's installation instructions for specific lubrication and torque requirements.

What does 'standard size' mean for these bearings?

Standard size means these bearings are intended for use when the crankshaft and the main bearing bores in the engine block are within their original factory specifications, without any machining or grinding.

ACL Ford 221/255/260/289/302 Windsor/Windsor 5.0L Standard Size Main Bearing Set

Specifications

Brand: ACL
Part #: 5M590H-STD
UPC: 9315726177471

ACL Ford 221/255/260/289/302 Windsor/Windsor 5.0L Standard Size Main Bearing Set

Name: ACL Ford 221/255/260/289/302 Windsor/Windsor 5.0L Standard Size Main Bearing Set
Brand: ACL
SKU: acl-acl-ford-221-255-260-289-302-windsor-windsor-5-0l-standard-size-main-bearing-t14-142681
Price: 87.95 USD
Availability: InStock

$87.95

Only 3 left in stock

ACL Ford 221/255/260/289/302 Windsor/Windsor 5.0L Standard Size Main Bearing Set. Direct fit for many classic Ford and Mercury V8s.

Key Features

Fits 34+ vehicle make/model combinations including Ford, Mercury, AC Shelby Cobra, Griffith, and Sunbeam Tiger.
Standard size main bearing set for Ford 221, 255, 260, 289, 302, and 5.0L Windsor V8 engines.
Multi-layer bearing material offers a good balance of strength and conformability.
Designed to maintain proper oil clearance and support the crankshaft.
ACL is a well-known manufacturer of engine bearings.

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Will this fit your vehicle?

Product Details

When you're rebuilding or refreshing a Ford Windsor engine, the main bearings are critical for keeping the crankshaft supported and spinning smoothly. This set from ACL is built to factory specifications for standard bore sizes, ensuring a proper fit and function for your 221, 255, 260, 289, 302, or 5.0L Windsor V8. ACL has been making engine bearings for a long time, and their experience shows in the consistent quality of their products. These bearings are made with a multi-layer material that balances strength and conformability, helping to protect your crankshaft while maintaining oil pressure.

This set includes all the main bearings you'll need for a standard size rebuild on a wide range of classic Ford and Mercury vehicles, from early Falcons and Mustangs to Galaxies and Cougars. Make sure to clean your engine block and crankshaft thoroughly before installation, and always follow the manufacturer's lubrication and torque specifications to get the best performance and longevity from these bearings.