JDM SUBARU LEGACY STI S402 EJ255 2.5L ENGINE MOTOR VF51 TURBO EJ25 ECU

Description

Buy JDM Subaru Legacy S402 EJ255 Engine Online

Buy JDM Subaru Legacy STi S402 EJ255 2.5L Engine Motor VF51 Turbo EJ25 ECU Online

The JDM Subaru Legacy STi S402 EJ255 2.5L DOHC Turbo Engine with VF51 Turbo and ECU is one of the rarest and most exclusive Subaru performance powertrains ever produced. Only 402 units of the Legacy STi S402 were built in 2008, making it one of the most collectible and unique models in Subaru’s history. At the heart of this limited-edition machine lies the EJ255 2.5L turbocharged boxer engine, tuned by Subaru Tecnica International (STi), paired with an exclusive VF51 twin-scroll turbocharger and matched ECU for refined power delivery, reliability, and everyday drivability.

At jdmcarpart.com, we specialize in importing direct-from-Japan Subaru engines like the EJ255 S402, offering enthusiasts and collectors a chance to own and swap one of the most exclusive JDM motors ever built. Every engine is compression tested, carefully inspected, and shipped worldwide on insured freight — making it the perfect option for Legacy enthusiasts, STi tuners, or custom Subaru projects.

Legacy STi S402: Subaru’s Hidden Gem

Unlike the WRX STi, which has enjoyed international fame, the Legacy STi S402 was a Japan-only model developed by Subaru Tecnica International. Its mission was to combine the performance DNA of an STi with the refinement and practicality of a Legacy sedan. The S402 came with special suspension, STi body enhancements, Brembo brakes, and — most importantly — a uniquely tuned EJ255 engine with a VF51 turbo, designed for smooth torque delivery and mid-range strength. Buy JDM Subaru Legacy S402 EJ255 Engine Online

EJ255 S402 Engine Specs

• Engine Code: EJ255 (S402 spec)
• Displacement: 2,457 cc (2.5L)
• Layout: Turbocharged flat-four (boxer), DOHC
• Compression Ratio: ~8.4:1
• Turbocharger: VF51 twin-scroll turbo (S402-exclusive)
• Factory Output: ~285 HP / 289 lb-ft torque (JDM rating)
• Redline: ~6,700 RPM
• Fueling: Multi-port injection with STi ECU tuning
• Cooling: Water-cooled with air-to-air intercooling
• Applications: Subaru Legacy STi S402 (2008, limited to 402 units). Buy JDM Subaru Legacy S402 EJ255 Engine Online

Why the EJ255 S402 is Special

1. Exclusivity – Only 402 Legacy S402s were built, making this engine incredibly rare.
2. VF51 Turbo – A unique twin-scroll turbo developed for strong mid-range power and response.
3. STi ECU Calibration – Factory-tuned for performance while maintaining smooth daily drivability.
4. Direct JDM Import – Lower mileage, compression-tested, and inspected before shipping.
5. Swap Versatility – Can be swapped into WRX, Legacy GT, Forester XT, and custom builds with ECU integration. Buy JDM Subaru Legacy S402 EJ255 Engine Online

Performance & Tuning Potential

While the EJ255 S402 is rare and collectible, it also offers impressive performance potential:

• Stage 1 (ECU Tune + Exhaust): ~310 WHP with stock turbo and intercooler.
• Stage 2 (Bolt-On Upgrades): Larger intercooler, injectors, upgraded fuel pump = ~350 WHP.
• Stage 3 (Turbo Upgrade): Replace VF51 with larger turbo, forged pistons/rods = 400–500 WHP potential.
• Collector Builds: Many enthusiasts prefer to keep the VF51 turbo for authenticity.

The EJ255 block is well-regarded for handling 350–400 WHP safely with proper tuning and fuel. Buy JDM Subaru Legacy S402 EJ255 Engine Online

Swap Applications

The EJ255 S402 engine with VF51 turbo and ECU is compatible with multiple Subaru chassis when wiring and ECU considerations are addressed:

• Legacy GT / Liberty GT builds
• WRX / WRX STi swaps (with ECU wiring modifications)
• Forester XT performance upgrades
• Custom Subaru rally/track builds.Buy JDM Subaru Legacy S402 EJ255 Engine Online

Pre-Installation Recommendations

• Replace timing belt, tensioners, and pulleys
• Inspect/replace water pump and gaskets
• Replace spark plugs and ignition coils
• Flush oil and coolant systems
• Tune ECU for your specific fuel blend and environment

Shipping & Warranty

• Shipping: Palletized, shrink-wrapped, and shipped globally with insurance
• Warranty: 30-day startup warranty covering internal defects
• Support: Expert assistance available for installation, wiring, and ECU compatibility. Buy JDM Subaru Legacy S402 EJ255 Engine Online

Why Buy From jdmcarpart.com

Because we deliver more than just engines — we deliver trust, quality, and authenticity. Benefits include:

• Genuine JDM Subaru engines direct from Japan
• Compression tested and inspected for reliability
• Lower mileage than domestic salvage engines
• Exclusive warranty protection
• Fast, insured global shipping
• Trusted support for Subaru enthusiasts worldwide. Buy JDM Subaru Legacy S402 EJ255 Engine Online

10 Frequently Asked Questions (FAQs)

1. What makes the S402 EJ255 different from other EJ255s?
It features STi tuning, a unique VF51 turbo, and ECU calibration specific to the S402. Buy JDM Subaru Legacy S402 EJ255 Engine Online

2. How rare is the Legacy S402 engine?
Only 402 cars were produced, making this engine extremely rare.

3. What’s included in the package?
The EJ255 motor, VF51 turbocharger, and ECU. Accessories may vary.

4. How much power does the S402 EJ255 make?
Factory rating: ~285 HP and ~289 lb-ft torque.

5. Can this engine be swapped into my WRX or Legacy GT?
Yes, with proper wiring and ECU integration.

6. What’s the mileage on JDM imports?
Typically 40,000–60,000 miles due to Japan’s Shaken laws.

7. How strong is the EJ255 block?
Safe for 350–400 WHP with stock internals; more with forged builds.

8. What turbo comes with the S402 EJ255?
The exclusive VF51 twin-scroll turbocharger.

9. Does it come with warranty?
Yes, a 30-day startup warranty covering internal defects.

10. Why buy from jdmcarpart.com?
Because we supply authentic, tested, low-mileage JDM engines with warranty and worldwide delivery. Buy JDM Subaru Legacy S402 EJ255 Engine Online