King Engine Bearings

Fitment Summary

This bearing set is designed for Subaru WRX and STI models equipped with EJ20, EJ22, or EJ25 engines, suitable for applications requiring a +0.25mm size upgrade.

Part #: MB5220XP0.25

Overview

The King Subaru WRX/STi EJ20, EJ22, EJ25 Flange #3 Position Performance Main Bearing Set is engineered for high-performance engine rebuilds and upgrades. Crafted by King Engine Bearings, a trusted name in engine component manufacturing since 1960, this bearing set is ideal for enthusiasts and professional mechanics seeking reliable, durable bearings that support optimal engine operation. Designed to enhance engine longevity and performance, these bearings help maintain proper clearance and reduce wear under demanding conditions, ensuring your Subaru engine runs smoothly and efficiently. Whether you're restoring a stock engine or building a high-performance setup, these bearings provide the precision fit and quality materials necessary for demanding driving environments. They are suitable for both street and track use, offering peace of mind during extended driving sessions or spirited driving.

Key Features

This bearing set features advanced materials and a precision design to meet the rigorous demands of high-performance engines:

• Manufactured with high-quality, durable alloy materials for excellent wear resistance
• Engineered with a +0.25mm size increase for precise clearance adjustments
• Designed for optimal load distribution and reduced friction
• Manufactured to strict tolerances for consistent performance
• Corrosion-resistant coatings to enhance longevity
• Compatible with Subaru EJ20, EJ22, and EJ25 engines

Construction & Design

The bearings are precision-machined from premium alloy materials, featuring a robust flange design that ensures secure fitment and reliable performance under high-stress conditions. The coatings applied help resist corrosion and reduce heat buildup, contributing to overall engine durability.

Installation & Fitment

These main bearings are designed for straightforward installation during engine rebuilds or repairs. Proper clearance and alignment are critical for optimal performance, so professional installation is recommended to ensure correct fitment and function.

Ideal For

This product is perfect for Subaru enthusiasts, engine builders, and mechanics aiming to enhance engine durability and performance in WRX and STI models, especially during rebuilds or performance upgrades.