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

This means the bearings are 0.010 inches smaller in diameter than standard size. They are meant to be used when the crankshaft journals have been machined down by 0.010 inches during an engine rebuild.

What is the purpose of main bearings?

Main bearings sit between the crankshaft and the engine block. They support the crankshaft, allowing it to rotate smoothly while maintaining proper oil clearance.

Does this bearing set come with installation hardware?

This product listing is for the crankshaft main bearing set only. Installation hardware, if required, is typically sold separately. Always refer to the manufacturer's instructions for a complete parts list.

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Trusted Since 1957

Est. 1957

ACL WHEN STOCK EXHAUSTED USE 5M1703A-.25 Engine Crankshaft Main Bearing Set

Specifications

Brand: ACL
Part #: 5M1703A-010

ACL WHEN STOCK EXHAUSTED USE 5M1703A-.25 Engine Crankshaft Main Bearing Set

Name: ACL WHEN STOCK EXHAUSTED USE 5M1703A-.25 Engine Crankshaft Main Bearing Set
Brand: ACL
SKU: acl-acl-when-stock-exhausted-use-5m1703a-25-engine-crankshaft-main-bearing-set-t14-633270
Price: 15.30 USD
Availability: BackOrder

$15.30

On Backorder

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

ACL 5M1703A-010 Crankshaft Main Bearing Set. Undersize 0.010 inch for engine rebuilding.

Key Features

Crankshaft main bearing set — supports the crankshaft in the engine block.
0.010 inch undersize — for use with crankshafts machined to match this size.
Direct fit replacement — designed to match factory specifications for installation.