What does '0.010 inch undersize' mean for these bearings?

This means the bearings are made to fit a crankshaft that has had its main journals ground down by 0.010 inches. This is a standard practice when rebuilding an engine with worn crankshaft journals.

Are these bearings sold individually or as a set?

This is a main bearing set, meaning it includes all the main bearings needed for a specific engine application.

What is the typical lifespan of engine bearings?

The lifespan of engine bearings depends heavily on proper installation, oil quality and change intervals, and driving conditions. When installed correctly on a properly machined crankshaft, they are built for long service life.

Specifications

Brand: ACL
Part #: 3M2977A-010

ACL WHEN STOCK EXHAUSTED USE 3M2977A-.25 Engine Crankshaft Main Bearing Set

Name: ACL WHEN STOCK EXHAUSTED USE 3M2977A-.25 Engine Crankshaft Main Bearing Set
Brand: ACL
SKU: acl-acl-when-stock-exhausted-use-3m2977a-25-engine-crankshaft-main-bearing-set-t14-631764
Price: 24.45 USD
Availability: BackOrder

$24.45

On Backorder

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

Worn-out main bearings cause engine noise and oil pressure loss. This ACL bearing set is 0.010 inch undersize for engine rebuilding.

Key Features

0.010 inch undersize — designed for crankshafts ground down by 0.010 inches during engine rebuilding.
Direct replacement — fits specific engine applications.
Built to OE specifications — ensures proper function and durability.