What does '0.25mm Oversized' mean for these bearings?

This means the bearings are slightly larger than standard size by 0.25mm. They are intended for use when the engine's crankshaft journals have been machined down by 0.25mm due to wear or for a specific performance build. Using oversized bearings on a standard-sized crankshaft will cause excessive clearance and engine damage.

Are these bearings suitable for high-performance engines?

Yes, ACL bearings are often chosen for performance builds due to their precise manufacturing and multi-layer material that helps manage oil and reduce friction under demanding conditions.

What other parts are typically needed when replacing main bearings?

When replacing main bearings, it's standard practice to also replace the connecting rod bearings (rod bearings) and ensure the crankshaft is properly measured and machined if necessary. You will also need new engine oil and an oil filter.

Specifications

Brand: ACL
Part #: 5M1957H-.25
UPC: 9315726276990

ACL Acura D16A1 / 97-01 Honda H22A4 / 98+ F23A 0.25mm Oversized High Performance Main Bearing Set

Name: ACL Acura D16A1 / 97-01 Honda H22A4 / 98+ F23A 0.25mm Oversized High Performance Main Bearing Set
Brand: ACL
SKU: acl-acl-acura-d16a1-97-01-honda-h22a4-98-f23a-0-25mm-oversized-high-performance--t14-12996
Price: 80.91 USD
Availability: InStock

$80.91

Only 9 left in stock

Key Features

Fits 1986-1989 Acura Integra, 1988-2001 Honda Civic, 1993-1997 Honda Civic del Sol, 1988-1991 Honda CRX, 1998-1999 Acura CL, 1998-2002 Honda Accord, 1998 Honda Odyssey, 1997-2001 Honda Prelude, and 1999 Isuzu Oasis.
Main bearing set is 0.25mm oversized for use with machined crankshafts.
Features a multi-layer bearing material designed for optimal oil film control and reduced friction.
ACL is a well-known manufacturer of engine bearings.

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About this part

Product Details

When you're rebuilding an engine or dealing with worn main bearings, getting the right size is crucial. These ACL main bearings are manufactured to precise tolerances and are 0.25mm oversized, meaning they're designed to fit crankshafts that have been machined down by 0.25mm due to wear or to accommodate a specific build. They're built with a multi-layer bearing material that helps manage oil film and reduce friction, which is important for engine longevity, especially in performance applications. ACL has been making engine bearings for a long time, and these are a solid option for getting your engine back in spec.

This set includes the main bearings needed for the specified Acura, Honda, and Isuzu engines. Always refer to your vehicle's service manual for specific installation procedures and torque specifications when replacing engine bearings.