Hi Performance Oil Pump Subaru EJ20/EJ22/EJ25

The Hi Performance Oil Pump Subaru EJ20/EJ22/EJ25 by ACL BEARINGS is engineered for drivers and technicians demanding reliable internal oil circulation in Subaru's legendary EJ-series engines. This wet sump oil pump is the backbone of engine lubrication, delivering consistent oil flow under varying RPM and load conditions. Whether you're rebuilding a high-mileage engine, upgrading to performance specifications, or maintaining critical OEM functionality, this pump ensures oil reaches critical bearing surfaces and timing chain components without compromise.

Manufactured from aluminum with black anodized finish, the Hi Performance Oil Pump features internal gearing and rotor design optimized for the EJ20, EJ22, and EJ25 displacement variants. Standard volume displacement ensures compatibility with factory oil galleries and pressure regulator circuits while maintaining the thermal and volumetric efficiency required for sustained engine operation. The anodized aluminum construction resists corrosion from acidic oil breakdown products and coolant contamination, extending pump life in both street and track environments. Precise tolerances between rotor and housing minimize bypass and cavitation, delivering measurable pressure stability across the full operating range.

Technicians rebuilding Subaru EJ-series mills—from WRX to Legacy to Impreza platforms—recognize this pump as the OEM-equivalent choice for long-term reliability. Installation requires engine disassembly and crankcase access; consult factory service manuals or qualified shops for proper timing, clearances, and fastener torque specifications. The compact 7.85 x 3 x 10.3-inch footprint and 3.07-pound weight integrate seamlessly into factory engine bay architecture. This is a core component, not an optional upgrade—critical for any engine rebuild, long-block assembly, or restoration to factory performance baseline.