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

This means the bearings are 0.25mm smaller in diameter than standard size. They are intended for use when the crankshaft journals have been machined down to this specific undersize during an engine rebuild to ensure proper oil clearance.

What is the benefit of the CT-1 coating?

The CT-1 coating is a dry-film lubricant that helps reduce friction and wear, particularly during the critical engine break-in period. It aids in initial lubrication and can contribute to longer bearing life.

Are these bearings suitable for a stock K20A2 or K24A engine?

These bearings are 0.25mm undersize and are intended for engines where the crankshaft has been machined to match this size. If your crankshaft is still at standard size, you would need standard size bearings.

Specifications

Brand: ACL
Part #: 4B1972HC-.25
UPC: 9315726457320

ACL Acura/Honda K20A2/K24A 0.25 Oversized High Performance Rod Bearing Set - CT-1 Coated

Name: ACL Acura/Honda K20A2/K24A 0.25 Oversized High Performance Rod Bearing Set - CT-1 Coated
Brand: ACL
SKU: acl-acl-acura-honda-k20a2-k24a-0-25-oversized-high-performance-rod-bearing-set-c-t14-372676
Price: 94.37 USD
Availability: BackOrder

$94.37

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ACL K20A2/K24A 0.25mm undersize rod bearings with CT-1 coating. Fits many Acura and Honda models.

Key Features

Fits Acura RDX (2007-2012), RSX (2002-2006), TSX (2004-2008), Honda Accord (2003-2007), CR-V (2002-2009), and Element (2003-2011).
Designed for Acura/Honda K20A2 and K24A engines.
Bearings are 0.25mm undersize for use with machined crankshafts.
Features a CT-1 dry-film lubricant coating to reduce friction and wear.
Well-built for proper oil clearance and engine operation.

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About this part

Product Details

This ACL rod bearing set is built for Acura and Honda K-series engines, specifically the K20A2 and K24A variants. These bearings are 0.25mm undersize, meaning they're designed to be used when the crankshaft journals have been machined down to match this size during an engine rebuild. The CT-1 coating is a unique dry-film lubricant that helps reduce friction and wear, especially during the critical break-in period. This is a well-built set that helps ensure proper oil clearance and smooth operation for your engine.

This set fits a range of popular Acura and Honda models, including the Acura RDX (2007-2012), RSX (2002-2006), TSX (2004-2008), and Honda Accord (2003-2007), CR-V (2002-2009), and Element (2003-2011). When rebuilding or refreshing your K-series engine, using bearings that are sized correctly and have advanced coatings can make a notable difference in long-term reliability.