Main Bearing Set Coated Subaru EJ20/EJ22/EJ25

The Main Bearing Set Coated Subaru EJ20/EJ22/EJ25 is purpose-built for Subaru flat-four engines requiring precision crankshaft support during high-performance builds, daily driving, and forced induction applications. This ACL Racing Series bearing kit addresses the critical need for reliable, durable main bearing surfaces when working with tuned or stock EJ-series powerplants. Engine builders and enthusiasts choose coated main bearings when standard bearings show wear, when boost levels increase, or when long-term reliability under sustained load is non-negotiable.

Coated bearing technology reduces friction and distributes heat more effectively than uncoated alternatives, extending bearing life and protecting critical crankshaft journals. The 0.025 mm undersize specification is engineered for engines with worn or damaged crank journals that have been line-honed to standard undersize dimensions—a common solution when resurfacing worn cranks rather than replacing them outright. ACL's proprietary coating improves oil film strength under pressure, making these bearings ideal for turbocharged builds where sustained load and cylinder pressure demand superior performance. The race-grade construction ensures minimal clearance variance across the set, critical for controlling oil flow and maintaining precise crankshaft geometry.

This bearing set fits EJ20, EJ22, and EJ25 engines across multiple Subaru platforms—WRX, Legacy, Forester, and Impreza applications. Installation requires proper crankshaft journal sizing confirmation before assembly; verify your journal has been line-honed to the 0.025 mm undersize spec to ensure correct clearance and oil film thickness. Proper torque sequence and correct bearing cap orientation are essential for long-term reliability. Technicians and builders preparing engines for turbocharging, stroker builds, or restoration work trust coated main bearing sets for their durability and precision fit.