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 various performance applications requiring standard size bearings.

Part #: MB5220XP

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 bearing manufacturing since 1960, this set offers premium quality and durability. It is ideal for enthusiasts and professional rebuilders seeking reliable, high-quality bearings that support engine longevity and consistent performance. Designed to fit specific Subaru turbocharged engines, these bearings help maintain proper oil clearance and reduce wear, ensuring your engine runs smoothly under demanding conditions.

This bearing set provides a precise fit and robust construction, supporting the engine’s critical components during high-stress driving and performance tuning. Whether restoring a stock engine or building a high-performance setup, these bearings help optimize engine response and durability, contributing to a more reliable and efficient powertrain.

Key Features

• Manufactured by King Engine Bearings, a leader in engine bearing technology
• Designed specifically for Subaru WRX/STi EJ series engines
• Standard size (size STD) for precise fit and optimal oil clearance
• High-quality materials for excellent wear resistance and durability
• Engineered for high-performance applications and engine rebuilds
• Flange #3 position for correct placement within the engine block
• Supports engine longevity and consistent operation under demanding conditions
• Suitable for both stock restoration and performance upgrades

Construction & Design

This main bearing set features precision-machined components crafted from high-grade materials to ensure optimal strength and wear resistance. The bearings are designed with a robust flange #3 configuration, providing secure placement and reliable support for the crankshaft. The manufacturing process emphasizes tight tolerances and high-quality finishes, promoting smooth operation and reducing friction within the engine.

Installation & Fitment

Designed for straightforward installation during engine rebuilds, these bearings require proper alignment and torque specifications to ensure optimal performance. It is recommended to follow manufacturer guidelines for installation to achieve the best results and engine longevity.

What’s Included

The package includes a complete set of main bearings for the specified engine position, ensuring comprehensive support for your rebuild or performance upgrade.