What does '0.025 undersize' mean for these bearings?

This means the bearings are manufactured to be slightly smaller than the original factory size. They are intended for use when the engine's crankshaft has been machined down by 0.025 inches, which is a common step in engine rebuilding to address wear or damage.

Do I need any special tools to install these main bearings?

Installation of main bearings typically requires specialized tools such as a bearing spreader, a torque wrench for precise tightening, and potentially a dial indicator for measuring oil clearance. Always refer to the manufacturer's installation instructions for a complete list of requirements.

What is the importance of proper oil clearance with main bearings?

Proper oil clearance is critical because it allows a thin film of oil to circulate between the crankshaft and the bearing. This oil film prevents metal-to-metal contact, reducing friction and heat, which is essential for the longevity and smooth operation of the engine.

ACL Honda K20C1 2.0L Turbo 0.025 Oversized Main Bearing Set

Specifications

Brand: ACL
Part #: 5M1985H-.025
UPC: 9315726453780

ACL Honda K20C1 2.0L Turbo 0.025 Oversized Main Bearing Set

Name: ACL Honda K20C1 2.0L Turbo 0.025 Oversized Main Bearing Set
Brand: ACL
SKU: acl-acl-honda-k20c1-2-0l-turbo-0-025-oversized-main-bearing-set-t14-312783
Price: 146.04 USD
Availability: BackOrder

$146.04

On Backorder

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

Fits 2017-2021 Honda Civic. This ACL main bearing set is 0.025" undersize, crucial for engine rebuilds with machined crankshafts.

Key Features

Fits 2017-2021 Honda Civic.
ACL main bearing set for K20C1 2.0L Turbo engines.
Includes a set of 0.025 inch undersize main bearings.
Designed for use with a crankshaft that has been machined by 0.025 inches.
Helps establish proper oil clearance during engine rebuilds.
Well-built components for reliable engine operation.

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Fits this vehicle

Honda Civic 2017-2021

Product Details

You get a full set of main bearings in this kit, which means one box handles the critical bottom-end rebuild for your engine. These ACL bearings are specifically made for the K20C1 2.0L Turbo engine found in the 2017-2021 Honda Civic. When you're rebuilding an engine, especially if the crankshaft has been machined, using the correct size bearings is absolutely essential for proper oil clearance and engine longevity.

This set is 0.025 inches undersize, meaning it's designed to be used with a crankshaft that has been ground down by 0.025 inches. This is a common practice during engine rebuilds to clean up wear or damage on the crank journals. ACL is known for making well-built engine components, and these bearings are no exception. They are designed to provide the correct oil film thickness, which is vital for reducing friction and heat between the crankshaft and the engine block.

When installing these bearings, make sure to follow the manufacturer's instructions carefully regarding lubrication and torque specifications. Proper installation is key to ensuring your engine runs smoothly and reliably for miles to come.