Engine Specifications
| Specification |
Details |
| Engine Code (Part Code) |
EJ25 (EJ251 / EJ253 / EJ255 / EJ257) |
| Engine Family |
Subaru EJ Boxer Engine Series |
| Engine Size |
2.5L (2,457 cc) Horizontally Opposed 4-Cylinder (Boxer) |
| Aspiration & Fuel |
Naturally Aspirated (EJ251 / EJ253) / Turbocharged (EJ255 / EJ257) |
| Mileage / Condition |
Used Low-Mileage Import / Tested (Approx. 50,000–70,000 KM) |
| Testing Status |
Compression Tested, Leak-Down Tested & Steam Cleaned |
| Parts Included |
Complete Engine Assembly with Attached Core Accessories |
| Core Charge |
$0 (No Core Return Required) |
Product Overview & Fitment Highlights
Get your Subaru back on the road with a hand-picked, low-mileage EJ25 complete engine assembly—compression tested, steam cleaned, and verified for strong mechanical health.
Why Choose This Engine?
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Low-Mileage Condition: Sourced with low average kilometers (approx. 50K–70K KM) to ensure maximum remaining operational life.
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Fully Tested: Units undergo compression and leak-down testing prior to listing to check cylinder pressures.
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Direct OEM Replacement: Original Subaru 2.5L Boxer engine assembly designed for direct drop-in setup.
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No Core Return: Keep your old engine block! We do not charge core fees or require trade-ins.
General Vehicle Fitment Reference
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Engine Variations:
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EJ251: Naturally Aspirated SOHC / MAP Sensor (Fits 1999–2004 Outback, Legacy, Forester, Impreza 2.5L).
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EJ253: Naturally Aspirated SOHC / MAF & i-AVLS (Fits 2005–2012 Outback, Legacy, Forester, Impreza 2.5L).
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EJ255: Turbocharged DOHC / AVCS (Fits 2006–2014 WRX, Forester XT, Legacy GT, Outback XT).
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EJ257: Turbocharged DOHC / Dual AVCS High-Performance (Fits 2004–2021 WRX STI).
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VIN & Variant Verification Recommended: Subaru 2.5L engines have distinct variations in cylinder head EGR ports, i-AVLS solenoid setups, single vs. dual AVCS, and intake manifolds across model years. Call us at 403.471.7150 or send us your VIN so we can verify exact matching before shipping!
Components Included vs. Accessories to Transfer
Engines are sold as complete assemblies (photos may show a representative unit) , including attached intake and exhaust core accessories. However, because electrical plug configurations, emissions setups, and sensor layouts vary by year and market, plan to swap your original sensors and harness if necessary:
| Included (Attached Core Accessories) |
Transfer / Swap From Original Engine |
| Engine Block & Cylinder Head Assembly |
Vehicle Engine Wiring Harness & ECU
|
| Intake Manifold & Throttle Body Assembly |
Sensors (USDM Crank/Cam Sensors, Knock Sensor)
|
| Fuel Rail & Injectors |
Vehicle Emissions & Vacuum Lines |
| Exhaust Manifold & Turbocharger (Turbo models) |
Alternator, AC Compressor & Power Steering Pump (If different)
|
| Timing Covers, Valve Covers & Oil Pan |
Starter Motor |
Compatible Models & Years
| Model |
Year Range |
Drivetrain |
Notes |
| Subaru Impreza / Crosstrek 2.5i |
2005 – 2011 |
AWD |
EJ253 NA |
| Subaru Legacy 2.5i |
2005 – 2012 |
AWD |
EJ253 NA |
| Subaru Outback 2.5i |
2005 – 2012 |
AWD |
EJ253 NA |
| Subaru Forester 2.5X |
2005 – 2010 |
AWD |
EJ253 NA |
| Subaru Baja |
2003 – 2006 |
AWD |
NA & Turbo |
Unsure About Compatibility?
Vehicle options, trims, and engine splits can vary. Before placing your order, please contact us with your VIN (Vehicle Identification Number) or send it to us before ordering. Our team will verify exact block, head, and sensor compatibility for your specific vehicle.
Installation & Peripheral Swap Notice:
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Sensor & Harness Swaps: Depending on your vehicle’s exact market, trim, and emission specs, your installer may need to transfer your original engine’s sensors, intake manifold, wiring harness, or oil pan to match your factory ECU.
Disclaimer: This compatibility table is provided for reference purposes only. It is the buyer/installer’s responsibility to confirm that the engine code listed in the specifications above matches their existing vehicle setup prior to installation.
