2003-2009 Subaru Legacy EZ30 JDM Engine | 3.0L H6 6-Cylinder DOHC AVCS Boxer Motor

Feature	Specification
Engine Code	EZ30 (Version 2 / Dual AVCS)
Displacement	3.0 Liters (2999 cc)
Cylinder Layout	Horizontally Opposed (Boxer) 6-Cylinder
Horsepower	Approx. 245–250 hp @ 6,600 RPM
Torque	219 lb-ft @ 4,200 RPM
Valvetrain	DOHC, 24-Valve, Chain Driven
Fuel Induction	Sequential Multi-Port Fuel Injection

 

Vehicle Fitment

This engine is a direct long block replacement for the following North American and International models:

• 2003-2009 Subaru Legacy 3.0R

• 2004-2009 Subaru Legacy Spec.B (6-Speed and Auto)

Installation & Technical Notes

To ensure a successful installation and maintain your warranty, please review the following technical requirements:

• Long Block Transfer: This is sold as a JDM Long Block. You must transfer your original intake manifold, exhaust manifold, sensors, and wiring harness from your US-spec engine to this JDM unit to ensure ECU compatibility and emissions compliance.

• EGR System: Some JDM EZ30 engines may not have the same EGR (Exhaust Gas Recirculation) ports as US models. Ensure your mechanic checks for these vacuum differences during the swap.

• Service Items: We highly recommend replacing the following "wear items" while the engine is out:

  • Water Pump and Thermostat

  • Spark Plugs (NGK Laser Platinum or Iridium)

  • Rear Main Seal

  • Front Crankshaft Seal

• Oil Grade: Use high-quality 5W-30 synthetic oil and an OEM Subaru oil filter.