What does '.025mm oversized' mean for these main bearings?

This means the bearings are slightly thicker than standard size by 0.025 millimeters. They are used when the crankshaft journals have been machined undersize during a rebuild to bring the oil clearance back to the manufacturer's specification.

What engines do these ACL main bearings fit?

These bearings are designed for specific Honda and Acura engine families, including the D16A1, H22A4, and F23A. Always confirm your engine code matches the application before purchasing.

Do I need any special tools to install main bearings?

Installing main bearings typically requires engine disassembly, careful cleaning of the block and crankshaft, and specialized bearing installation tools. It's recommended to consult your vehicle's service manual for the correct procedures and torque specifications.

ACL Acura D16A1 / 97-01 Honda H22A4 / 98+ F23A0.025mm Oversized High Performance Main Bearing Set

Specifications

Brand: ACL
Part #: 5M1957H-.025
UPC: 9315726276976

ACL Acura D16A1 / 97-01 Honda H22A4 / 98+ F23A0.025mm Oversized High Performance Main Bearing Set

Name: ACL Acura D16A1 / 97-01 Honda H22A4 / 98+ F23A0.025mm Oversized High Performance Main Bearing Set
Brand: ACL
SKU: acl-acl-acura-d16a1-97-01-honda-h22a4-98-f23a0-025mm-oversized-high-performance--t14-12995
Price: 80.91 USD
Availability: InStock

$80.91

Only 6 left in stock

ACL D16A1 / H22A4 / F23A .025mm Oversized Main Bearing Set. For engine rebuilds needing tighter clearances.

Key Features

Fits 1986-1989 Acura Integra, 1998-1999 Acura CL, 1988-2001 Honda Civic, 1993-1997 Honda Civic del Sol, 1988-1991 Honda CRX, 1998 Honda Odyssey, 1998-2002 Honda Accord, 1988-1991 and 1997-2001 Honda Prelude, and 1999 Isuzu Oasis.
Set includes .025mm oversized main bearings for engine rebuilding.
Designed for D16A1, H22A4, and F23A engine families.
Well-built by ACL, a well-known name in engine bearings.
Helps achieve precise oil clearances for performance applications.

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Will this fit your vehicle?

Product Details

Doing an engine rebuild on your Acura Integra, Honda Civic, or Prelude and need to get those clearances dialed in just right? This ACL high-performance main bearing set is built to help you achieve that. Main bearings are critical for keeping your crankshaft spinning smoothly within the engine block, and when you're aiming for optimal performance or rebuilding an engine with worn components, getting the right bearing size is key. This set is .025mm oversized, meaning it's designed to compensate for a crankshaft that's been machined down slightly, or to achieve a tighter oil clearance for improved oil pressure and performance.

ACL has been making engine bearings for a long time, and this set is well-built with their experience in mind. They're designed to handle the demands of performance engines, offering a solid option when you're putting an engine back together. The .025mm sizing is a specific choice for builders who know their crankshaft dimensions and are looking for a precise fit. If your crankshaft has been ground undersize, these bearings will help you get back to the correct running clearance.

When you're rebuilding an engine, especially one that's going to see spirited driving, getting the main bearings right is a crucial step. Make sure you have your crankshaft measured accurately before ordering, so you can select the correct bearing size. This set is a popular choice for tuners and rebuilders working on many popular D16A1, H22A4, and F23A engines.