What is the purpose of the .025 size designation?

The .025 designation indicates that these bearings are .025 inches undersize. This is typically used when the crankshaft journals have been machined down to correct for wear or to achieve a specific clearance.

What is PMaxBlack material?

PMaxBlack is a proprietary tri-metal material developed by King Engine Bearings. It's a copper-based compound designed to offer superior load capacity, making it suitable for performance applications.

Does this bearing set include all main bearings for the engine?

This is a specific main bearing set for the #3 position. For a complete engine rebuild, you will need to ensure you have the correct sets for all main bearing positions as specified by the manufacturer.

Specifications

Brand: King Engine Bearings
Part #: MB5220XP.026
UPC: 611500608711

King Subaru WRX/STi EJ20 EJ22 EJ25 Flange #3 Position (Size .025) Performance Main Bearing Set

Name: King Subaru WRX/STi EJ20 EJ22 EJ25 Flange #3 Position (Size .025) Performance Main Bearing Set
Brand: King Engine Bearings
SKU: king-engine-bearings-king-subaru-wrx-sti-ej20-ej22-ej25-flange-3-position-size-0-t14-168823
Price: 103.54 USD
Availability: BackOrder

$103.54

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King Subaru WRX/STi EJ20 EJ22 EJ25 Flange #3 Position (Size .025) Performance Main Bearing Set. Built for superior load capacity.

Key Features

Fits a wide range of Subaru vehicles including WRX STI, Impreza, Legacy, Forester, Baja, and Saab 9-2X.
Designed for Subaru EJ20, EJ22, and EJ25 engines.
Features PMaxBlack tri-metal copper-based material for superior load capacity.
Incorporates Radialock technology for optimal crush height and secure fit.
This is the #3 position main bearing set.
Bearings are .025 inches undersize.

⚠️ CA WARNING: This product can expose you to chemicals known to the State of California to cause cancer and/or birth defects or other reproductive harm. Learn more

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About this part

Product Details

If you're rebuilding the engine in your Subaru WRX/STi, Impreza, Legacy, or Forester, this performance main bearing set from King Engine Bearings is a solid option. These bearings are specifically designed for the EJ20, EJ22, and EJ25 engine platforms, fitting the #3 position and coming in at .025 inches undersize. King has been specializing in bearings since 1960, focusing on supplying well-built components for engine builds.

This set features King's PMaxBlack material, which is a tri-metal copper-based compound that offers superior load capacity compared to standard bearings. They also incorporate Radialock technology, which helps maintain optimal crush height during installation for a secure fit. These features work together to ensure the bearings can handle the demands of performance applications while maintaining proper oil clearance.

When you're putting an engine back together, especially one that sees spirited driving, the quality of the bearings is crucial. King's focus on this specific component means you're getting a part built with their specialized knowledge.