What does the +0.25mm sizing mean for these bearings?

The +0.25mm sizing indicates that these bearings are intended for use when the crankshaft journals have been machined down by 0.25mm. This is a common practice during engine rebuilds to ensure a proper fit with worn or resurfaced crankshafts.

What type of engines are these bearings best suited for?

These bearings are specifically designed for low to medium-load engines. Their bi-metal aluminum construction and lead-free composite make them a reliable choice for many common Acura and Honda applications.

Are these bearings environmentally safe?

Yes, these bearings feature a lead-free composite material, making them an environmentally safe option for your engine build.

Specifications

Brand: King Engine Bearings
Part #: MB5259AM0.25
UPC: 611500388019

King Engine Bearings Honda B18A1 (Size +0.25mm) Main Bearing Set

Name: King Engine Bearings Honda B18A1 (Size +0.25mm) Main Bearing Set
Brand: King Engine Bearings
SKU: king-engine-bearings-king-engine-bearings-honda-b18a1-size-0-25mm-main-bearing-s-t14-770606
Price: 38.77 USD
Availability: BackOrder

$38.77

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

King Engine Bearings Honda B18A1 (Size +0.25mm) Main Bearing Set. These bi-metal aluminum bearings are a solid option for many Acura and Honda engines.

Key Features

Fits a wide range of Acura and Honda vehicles.
Main bearing set is sized +0.25mm for use with machined crankshafts.
Constructed with a bi-metal aluminum material.
Features a lead-free, environmentally safe composite.
Designed for low to medium-load engines.

⚠️ CA WARNING: This product can expose you to chemicals known to the State of California to cause cancer and/or birth defects or other reproductive harm. Learn more

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About this part

Product Details

Built with a bi-metal aluminum material, this main bearing set from King Engine Bearings is a well-built option for a range of Acura and Honda engines, including popular models like the Acura Integra, Honda Accord, and Honda CR-V. These bearings are specifically sized at +0.25mm, meaning they are intended for use when the crankshaft journals have been machined to this specific undersize during an engine rebuild.

King specializes in bearings, and this set is designed for low to medium-load engines. The lead-free composite material is environmentally safe, making it a responsible choice for your engine build. When you're rebuilding the bottom end of your engine, properly sized and well-made main bearings are crucial for ensuring the crankshaft spins freely and with minimal friction, which is key to engine longevity and performance.