What is the main function of crankshaft main bearings?

Main bearings support the crankshaft within the engine block. They create a precise clearance that allows the crankshaft to rotate smoothly while also maintaining oil pressure for lubrication and cooling.

Do these bearings come in different sizes?

This specific part number, 5M590A-10, is a standard size bearing set. If your crankshaft has been machined undersize due to wear or repair, you would need a different size bearing set.

What should I do before installing these main bearings?

Before installing, it's critical to thoroughly clean the engine block's main bearing bores and the crankshaft's main journals. Any dirt or debris can cause immediate damage to the new bearings.

1967-1968 Omega Omega Main Bearing Set | ACL 5M590A-10

Name: ACL Ford Prod. V8 255-289-302 1962-98 Engine Crankshaft Main Bearing Set
Brand: ACL
SKU: acl-acl-ford-prod-v8-255-289-302-1962-98-engine-crankshaft-main-bearing-set-t14-630496
Price: 28.72 USD
Availability: BackOrder

ACL Ford Prod. V8 255-289-302 1962-98 Engine Crankshaft Main Bearing Set

$28.72

On Backorder

Order now to reserve yours — we'll ship as soon as stock arrives. Full refund if we're unable to fulfill.

Fits 1967-1968 Omega Omega. ACL main bearing set for Ford V8 255-289-302 engines.

Key Features

Fits 1967-1968 Omega Omega.
Designed for Ford 255, 289, and 302 V8 engines.
Replaces original equipment main bearings.
Ensures proper crankshaft positioning and rotation.
Well-built for reliable engine performance.

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Product Details

Doing an engine rebuild on your 1967 or 1968 Omega Omega? If you're working on the Ford 255, 289, or 302 V8, you'll need a solid set of main bearings to get everything running smoothly again. These main bearings from ACL are built to replace your original equipment, ensuring the crankshaft sits properly and spins freely within the engine block. Proper bearing clearance is crucial for oil flow and preventing premature wear, so using a well-built replacement like this set is key to a lasting engine build.

ACL has been making engine bearings for a long time, and this set is designed to meet the needs of these classic Ford V8 engines. They are made to the correct specifications to ensure they fit right and perform as expected. When you're putting an engine back together, having reliable parts like these bearings makes a big difference in the final outcome. Make sure to clean your block and crankshaft thoroughly before installation to prevent any debris from getting trapped, which could damage the new bearings.