2007-2009 Subaru Legacy Spec B 2.0L Turbo Engine EJ20Y

Description

Buy 07-09 Subaru Legacy Spec B 2.0L Turbo Engine EJ20Y Online

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Product Description

Below are the key features, specifications, benefits, and everything you need to know about this EJ20Y engine.

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What’s the EJ20Y?

The EJ20Y is a turbocharged 2.0-liter boxer engine built by Subaru, used in the Spec B versions of the 2007-2009 Subaru Legacy GT / B4 / Spec B. It includes DOHC (dual overhead cam), 16 valves, turbo induction, and Subaru’s variable valve timing technologies (AVCS) to deliver strong mid-range torque, responsive throttle, and spirited performance typical of Spec B heritage.

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Key Technical Specs

Specification	Details
Displacement	1,994 cc (2.0L)
Bore × Stroke	92.0 mm × 75.0 mm
Induction	Turbocharged (Wikipedia)
Valvetrain	DOHC, 16 valves, AVCS (variable valve timing)
Peak Power	~ 280 PS (≈ 276-280 metric hp) @ ~ 6,400 rpm for the 6MT version
Peak Torque	~ 343 N·m (≈ 253 lb-ft) at ~ 2,400 rpm
Compression Ratio	~ 9.4:1 in Spec B STI/Spec B tuned by STI version

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Why Choose This Engine for Your Legacy Spec B?

• Authentic Spec B Performance: This is the same engine designed for the Spec B trim — tight response, elevated output, enhanced hardware.
• Strong Mid-Range Torque: Great for both spirited street driving and highway overtakes. The torque curve makes daily driving more usable.
• Aftermarket / Tuning Support: Plenty of aftermarket parts available (turbo upgrades, fuel systems, exhausts) thanks to the popularity of this platform.
• Direct Fit / Compatibility: Easier swap since it originates from the same car family, minimizing custom work.
• JDM Quality: These engines are imported from Japan; many have relatively low mileage and have been maintained under strict standards.

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What’s Included

When you buy this engine through jdmcarpart.com, you will typically receive:

• The complete EJ20Y engine block and cylinder heads with internal components.
• The turbocharger as per the original Spec B setup.
• Dual AVCS hardware functioning (intake & exhaust) for optimal valve timing.
• (Optional / depending on listing) External accessories like alternator, power steering pump, oil pump, etc. Confirm with the product listing. Buy 07-09 Subaru Legacy Spec B 2.0L Turbo Engine EJ20Y

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Use Cases & Fitment

This engine is ideal for:

• Replacing a worn or damaged EJ25 / EJ series engine in a 2007-2009 Legacy Spec B.
• Upgrading for stronger performance while retaining OEM drivability.
• Project builds where you want “Spec B level” output. Buy 07-09 Subaru Legacy Spec B 2.0L Turbo Engine EJ20Y
• Swaps into compatible Legacy/Forester variants with matching mounts/transmission (check compatibility).

Models typically compatible:

• 2007-2009 Subaru Legacy Spec B (GT / B4) with manual transmission ideally.
• Some AWD configurations, depending on matching the drivetrain.
• Workshop builds that can adapt ECU or wiring if needed. Buy 07-09 Subaru Legacy Spec B 2.0L Turbo Engine EJ20Y

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Real-World Performance

The Spec B EJ20Y gives strong factory torque around 2,400 rpm, which means you get boosted grunt early. Car responds well with minimal turbo lag. Top-end is also respectable with modifications. Owners report consistent power delivery when turbos are in good condition and the engine is well-maintained. Buy 07-09 Subaru Legacy Spec B 2.0L Turbo Engine EJ20Y

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Reliability & Maintenance

To keep this engine performing well:

• Use quality synthetic oil and change it regularly.
• Ensure turbo health (regular inspection, oiling, cooling).
• Maintain cooling system (radiator, intercooler piping).
• Replace timing belts / belts & pulleys at recommended intervals.
• Confirm dual AVCS functions correctly (cam timing sensors, oil supply).

JDM engines are typically better preserved because in Japan laws encourage stricter inspection & maintenance. But used status means some wear is expected — verify compression, leak-down, turbo wear before installation. Buy 07-09 Subaru Legacy Spec B 2.0L Turbo Engine EJ20Y

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Ordering & Shipping

At jdmcarpart.com:

• We offer authentic JDM engine units, inspected before shipping.
• Global shipping available — we package securely to avoid damage during transit.
• Warranty terms (start-up or internal components) will be clearly stated in your listing.
• Returns / support for fitment questions are included. Buy 07-09 Subaru Legacy Spec B 2.0L Turbo Engine EJ20Y

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What to Check Before Buying

• Mileage and condition of the unit. Low mileage is preferable.
• Compressor wheel & turbine condition in the turbo. Watch for shaft play.
• Confirm AVCS (intake and exhaust) works properly.
• Ask for photos of heads, block, ports, turbo housing.
• Verify the listing includes or excludes certain external parts (hoses, alternator, starter, etc.).
• Check the compatibility with your transmission and mounting hardware for your local specs.

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10 Frequently Asked Questions (FAQs)

1. What exactly is the EJ20Y engine?
   The EJ20Y is a 2.0L horizontally-opposed (boxer) turbo engine from Subaru, used in the 2007-2009 Spec B / GT / B4 models. It features DOHC, 16 valves and AVCS (variable valve timing) to deliver about 280 PS and 343 Nm torque in stock form. Buy 07-09 Subaru Legacy Spec B 2.0L Turbo Engine EJ20Y
2. Does this engine come with a transmission?
   That depends on the specific listing. Some units include the manual 6-speed transmission (6MT) while others are “engine-only.” If you need the transmission, ensure your listing specifies “engine + transmission.”
3. Is this a direct bolt-in swap for my 2008 Legacy Spec B?
   For many parts, yes — mounts, wiring, sensors are similar. But you should double-check that your specific model and drivetrain match (AWD, manual/auto) and whether any ECU or wiring modifications are needed. Buy 07-09 Subaru Legacy Spec B 2.0L Turbo Engine EJ20Y
4. How reliable is the EJ20Y for daily use?
   When properly maintained, quite reliable. Genuine JDM units often have good upkeep, and the engine’s design with AVCS helps in adaptability. Regular maintenance like oil changes, belt changes, turbo checks will help longevity.
5. How much power can I expect stock vs after modifications?
   Stock is around 280 PS / 343 Nm (manual version) for the Spec B. With modifications (bigger turbo, exhaust, intake, fuel upgrades, ECU tuning), higher figures are possible — many owners push them well beyond stock safely. Buy 07-09 Subaru Legacy Spec B 2.0L Turbo Engine EJ20Y
6. What supporting upgrades are recommended?
   Upgraded intercooler, high-flow downpipe, improved wastegate/turbo management, fuel system improvements (injectors, pump), and of course a tuning/ECU calibration for proper air/fuel ratios.
7. What are common failure points to watch for?
   Turbo wear (shaft play, damaged blades), oil leaks (especially around valve cover gaskets), AVCS mechanism issues, worn piston rings or bearings, cooling issues. Always inspect thoroughly before purchase. Buy 07-09 Subaru Legacy Spec B 2.0L Turbo Engine EJ20Y
8. Do you offer warranty or return policies?
   Yes — jdmcarpart.com provides warranty on internal components (block, heads) plus a return window so you can inspect the engine upon delivery. Specific terms depend on the listing.
9. How much does shipping cost internationally?
   Shipping cost depends on weight, destination country, and whether you choose curbside vs liftgate or residential delivery. For large, heavy engines extra fees apply. Get a quote during checkout. Buy 07-09 Subaru Legacy Spec B 2.0L Turbo Engine EJ20Y
10. Will I need to modify my ECU / sensors to run this engine properly?
    Possibly. If your ECU is already Spec B or tuned for similar turbo/AVCS setup, you may need minimal changes. Otherwise, to unlock full potential, you’ll want ECU tuning and ensure sensors (MAF, MAP, knock, etc.) are compatible.