What does '0.5mm undersize' mean for these bearings?

This means the bearings are manufactured to be 0.5mm smaller in diameter than the standard size. This is typically used when the engine's crankshaft has been machined down by 0.5mm to correct wear or runout.

What is the main function of main bearings in an engine?

Main bearings support the crankshaft within the engine block. They create the necessary oil clearance between the crankshaft journals and the block, allowing the crankshaft to spin smoothly while maintaining proper lubrication.

Are these bearings sold individually or as a set?

This product is a set of main bearings, intended to replace all the main bearings in the specified engine application.

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Specifications

Brand: King Engine Bearings
Part #: MB5811SM0.5
UPC: 611500599200

King Engine Bearings Subaru EE20Z DOHC (Size 0.5) Main Bearing Set

Name: King Engine Bearings Subaru EE20Z DOHC (Size 0.5) Main Bearing Set
Brand: King Engine Bearings
SKU: king-engine-bearings-king-engine-bearings-subaru-ee20z-dohc-size-0-5-main-bearin-t14-629336
Price: 95.17 USD
Availability: BackOrder

$95.17

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King Engine Bearings Subaru EE20Z DOHC (Size 0.5) Main Bearing Set. This set includes main bearings that are 0.5mm undersize for engine rebuilding.

Key Features

This set includes main bearings that are 0.5mm undersize.
Designed for Subaru EE20Z DOHC engines.
Well-built construction for reliable engine performance.

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About this part

Product Details

This main bearing set from King Engine Bearings includes the main bearings you need for a Subaru EE20Z DOHC engine rebuild. These bearings are specifically sized at 0.5mm undersize, which is important when you're machining your crankshaft to match.

King Engine Bearings are known for their well-built construction. This set is designed to provide reliable performance for your engine's bottom end. When rebuilding an engine, using bearings that are the correct size for your machined components is critical for proper oil clearance and long-term durability.