What does the +0.75mm sizing mean for these bearings?

The +0.75mm sizing indicates that these bearings are designed for a crankshaft that has been machined down by 0.75mm on its main journals. This is a common practice during engine rebuilding when the original journals have wear or damage.

What is the SI material used in these bearings?

King Engine Bearings uses their SI material, which is a specialized alloy known for its strength and load-carrying capacity. It's a well-built option for engines that experience higher stresses, such as those with turbochargers or performance modifications.

Do these bearings come with installation instructions?

While these bearings are designed as a direct replacement for the specified Subaru engines, it's always recommended to consult your vehicle's official service manual for detailed installation procedures and proper oil clearance specifications.

Specifications

Brand: King Engine Bearings
Part #: MB5220SI0.75
UPC: 611500623448

King Engine Bearings Subaru Ej20/Ej22/Ej25 (Incl. Turbo) (Size +0.75mm) Main Bearing Set

Name: King Engine Bearings Subaru Ej20/Ej22/Ej25 (Incl. Turbo) (Size +0.75mm) Main Bearing Set
Brand: King Engine Bearings
SKU: king-engine-bearings-king-engine-bearings-subaru-ej20-ej22-ej25-incl-turbo-size--t14-770536
Price: 43.64 USD
Availability: BackOrder

$43.64

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King Engine Bearings Subaru EJ20/EJ22/EJ25 main bearing set. Features +0.75mm sizing for engine rebuilding.

Key Features

Main bearing set for Subaru EJ20, EJ22, and EJ25 engines.
Includes turbo models.
Features +0.75mm undersize sizing for machined crankshafts.
Constructed with King's durable SI bearing material.
Designed to handle the demands of performance and rebuilt engines.

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About this part

Product Details

When you're rebuilding the bottom end of your Subaru EJ20, EJ22, or EJ25 engine, especially one that's seen turbo boost, getting the main bearings right is critical. This set from King Engine Bearings is designed to be a solid option for that job. They're built to handle the stresses of a performance or rebuilt engine, ensuring your crankshaft spins smoothly and reliably.

This particular set is sized at +0.75mm, which is important if your crankshaft journals have been machined to this size during a rebuild. King uses their specialized SI material, which is known for its strength and ability to handle high loads. This means they're well-suited for engines that are pushed harder than stock, offering improved durability over basic bearings.

When installing these, make sure your crankshaft journals are clean and within the specified tolerance for the +0.75mm size. It's always a good idea to refer to your engine's service manual for the correct installation procedures and oil clearances to ensure these bearings perform as intended.