What does the 0.25 sizing mean for these bearings?

The 0.25 sizing indicates that these bearings are 0.025 inches undersize. This means they are designed to be used with a crankshaft that has been machined down to this specific undersize dimension during an engine rebuild.

What is the pMax Black coating for?

The pMax Black coating is a specialized surface treatment applied by King Engine Bearings. It's designed to help retain oil on the bearing surface and reduce friction, which is especially beneficial during the engine's break-in period.

Are these bearings suitable for high-performance or turbocharged engines?

Yes, these bearings are designed for Subaru EJ20, EJ22, and EJ25 engines, which commonly include turbocharged variants. The pMax Black coating is intended to help manage the increased demands of these engines.

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Specifications

Brand: King Engine Bearings
Part #: MB5382XPGC0.25
UPC: 611500603532

King Subaru EJ20/EJ22/EJ25 (Incl. Turbo) (Size 0.25) pMaxBlack Coated Main Bearing Set

Name: King Subaru EJ20/EJ22/EJ25 (Incl. Turbo) (Size 0.25) pMaxBlack Coated Main Bearing Set
Brand: King Engine Bearings
SKU: king-engine-bearings-king-subaru-ej20-ej22-ej25-incl-turbo-size-0-25-pmaxblack-c-t14-432459
Price: 189.82 USD
Availability: BackOrder

$189.82

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King Engine Bearings main bearing set for Subaru EJ20/EJ22/EJ25 engines. Size 0.25.

Key Features

Main bearing set for Subaru EJ20, EJ22, and EJ25 engines, including turbocharged models.
Features King's pMax Black coating for improved oil retention and reduced friction.
Bearings are 0.025 inches undersize, intended for use with a machined crankshaft.
Well-built components for engine rebuilding applications.

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About this part

Product Details

If you're rebuilding the bottom end of your Subaru EJ20, EJ22, or EJ25 engine, especially one with a turbo, getting the main bearings right is crucial for long-term reliability. This set from King Engine Bearings is built to handle the demands of these popular Subaru powerplants.

These main bearings feature King's pMax Black coating, which is a specialized surface treatment designed to improve oil retention and reduce friction, particularly during the critical break-in period. They are also precisely sized at 0.025 inches undersize, meaning they're intended for crankshafts that have been machined down to match this specification. This ensures a snug, proper fit for optimal oil clearance and performance.

When you're putting an engine back together, especially a performance-oriented Subaru engine, using well-built components like these bearings makes a significant difference. They are a solid option for anyone looking to ensure their engine build is sound.