What does the '0.05' in the part number signify?

The '0.05' indicates that this is an undersize bearing set. It means the bearings are 0.05mm smaller in diameter than standard, intended for use with a crankshaft that has been machined down by the same amount to achieve precise oil clearances.

Are these bearings suitable for a stock engine rebuild?

These bearings are 0.05mm undersize, which means they are intended for engines where the crankshaft has been machined down. If your crankshaft is still at standard size, you would need a standard size bearing set. Always confirm your crankshaft's dimensions before ordering bearings.

What is the main benefit of the high-performance overlay on these bearings?

The high-performance overlay is designed to reduce friction between the bearing and the crankshaft journal. It also helps to dissipate heat more effectively, which is beneficial for engine longevity, especially in applications that experience higher loads or temperatures.

Specifications

Brand: King Engine Bearings
Part #: MB5382SI0.5
UPC: 611500623394

King Engine Bearings Subaru EJ20/EJ22/EJ25 (Incl. Turbo) (Size 0.05) Main Bearing Set

Name: King Engine Bearings Subaru EJ20/EJ22/EJ25 (Incl. Turbo) (Size 0.05) Main Bearing Set
Brand: King Engine Bearings
SKU: king-engine-bearings-king-engine-bearings-subaru-ej20-ej22-ej25-incl-turbo-size--t14-432458
Price: 40.47 USD
Availability: BackOrder

$40.47

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King Engine Bearings main bearing set for Subaru EJ20/EJ22/EJ25 engines. This is a 0.05 undersize set.

Key Features

This is a 0.05mm undersize main bearing set.
Designed for Subaru EJ20, EJ22, and EJ25 engines, including turbocharged variants.
Features a high-performance overlay for improved friction reduction and heat dissipation.
Helps maintain proper oil clearance for crankshaft lubrication.

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About this part

Product Details

This King Engine Bearings main bearing set is built with a high-performance overlay that's 0.05mm undersize, specifically for Subaru EJ20, EJ22, and EJ25 engines, including turbocharged models. These bearings are crucial for maintaining proper oil clearance between the crankshaft and the engine block, which is essential for lubrication and preventing premature wear. The advanced overlay material helps to reduce friction and dissipate heat, especially important in high-performance or heavily used engines.

King Engine Bearings is known for its well-built components, and this set is no exception. The 0.05mm undersize means these are intended for use with a crankshaft that has been machined down by that amount to achieve optimal clearances. This attention to detail in manufacturing ensures that your engine's rotating assembly stays properly supported and lubricated, even under demanding conditions. Proper installation with the correct machining and oil clearances is key to realizing the full benefit of these bearings.