What does the +0.25mm sizing mean for my engine build?

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 rebuilding to clean up minor wear or imperfections on the crankshaft.

Are these bearings suitable for a performance engine build?

Yes, King Engine Bearings are known for their durable overlay material, which is designed to handle the increased stresses and demands of performance or rebuilt engines.

What is the typical process for installing these bearings?

Installation involves ensuring the crankshaft journals have been machined to the correct +0.25mm undersize and are clean. The bearings are then carefully placed into the engine block and main caps, ensuring proper alignment before the crankshaft is installed.

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Specifications

Brand: King Engine Bearings
Part #: MB639SM0.25
UPC: 611500624193

King Engine Bearings Audi Cepa/Cepb (Size +0.25mm) Main Bearing Set

Name: King Engine Bearings Audi Cepa/Cepb (Size +0.25mm) Main Bearing Set
Brand: King Engine Bearings
SKU: king-engine-bearings-king-engine-bearings-audi-cepa-cepb-size-0-25mm-main-bearin-t14-771072
Price: 69.68 USD
Availability: BackOrder

$69.68

On Backorder

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

King Engine Bearings main bearing set for Audi CEPA/CEPB engines. This is a 0.25mm undersize set.

Key Features

Main bearing set for Audi CEPA and CEPB engines.
This set is 0.25mm undersize, intended for use with machined crankshaft journals.
Features King's durable overlay material for improved wear resistance.
Precision sized for a proper fit in the engine block and with the crankshaft.

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About this part

Product Details

When you're rebuilding the bottom end of your Audi CEPA or CEPB engine, getting the main bearings right is crucial for long-term health. This set from King Engine Bearings is specifically sized at +0.25mm, meaning it's designed to be used when the crankshaft journals have been machined down by 0.25mm to clean up wear or damage. Proper main bearings ensure the crankshaft spins smoothly within the block, maintaining consistent oil clearance and reducing friction.

King uses a specialized overlay material on these bearings that's known for its durability and ability to handle the stresses of a performance or rebuilt engine. The precision sizing ensures they fit right into the prepared block and align correctly with the crankshaft. This set is a solid option for anyone looking to ensure their engine build has reliable rotating assembly components.