For 2004-2018 Subaru Impreza EJ255 EJ257 WRX 2.5L Crankshaft & Main +Rod Bearing

Crankshaft and Main and Rod Bearing Set for Subaru

This engine rotating assembly kit includes a crankshaft and matching bearings to restore proper internal engine function for Subaru 2.5L EJ255 and EJ257 powerplants.

Overview

This Crankshaft and Main and Rod Bearing set provides the essential components needed to rebuild the bottom end of a performance engine. The Crankshaft and Main and Rod Bearing kit is engineered for mechanics and engine builders requiring reliable replacement parts for 2.5L EJ series builds. This assembly ensures the Crankshaft and Main and Rod Bearing surfaces meet the clearances necessary for stable oil pressure and smooth rotation.

Built For Performance

• Precision ground bearing surfaces to ensure consistent oil film thickness.
• Heat treated steel crankshaft construction for increased tensile strength.
• Micro finished journals to reduce friction and minimize heat buildup.
• High load capacity bearing material designed for turbocharged applications.
• Direct fit dimensions matching factory specifications for the EJ255 and EJ257 blocks.

Fits These Machines

• for Subaru Impreza WRX (2004 to 2014)
• for Subaru Impreza WRX STI (2004 to 2018)
• for Subaru EJ255 2.5L Turbo Engines
• for Subaru EJ257 2.5L Turbo Engines

On-The-Job Use

• Complete bottom end engine overhauls following internal mechanical failure.
• Routine maintenance for high mileage performance vehicles to prevent rod knock.
• Engine builds where new rotating components are required to ensure long term reliability.

Specs At A Glance

Good To Know

Q: Does this kit require professional installation? A: Engine bottom end assembly involves precise torque sequences and clearance measurements that typically require a trained technician. Specialized tools are necessary to verify that all components are seated correctly within the engine block.

Q: Are these bearings standard size or oversized? A: This set includes standard size bearings designed to match the journals of the included crankshaft. Always verify oil clearances with precision measuring tools during the assembly process to ensure component longevity.

Slight variation in finish or dimensions may occur between production runs, and fit can depend on serial number, so confirm compatibility before ordering.