Description
Unleash Subaru Power: Subaru EJ255 Engine For Sale
The Subaru EJ255 is one engine that, once installed in your Subaru, will unlock your vehicle’s full potential. Known as the engine of performance enthusiasts, the EJ255 for sale here is robustly built to offer a perfect blend of power and precision. When properly maintained, the engine will not only outlast many other turbo motors of its class but will also make sure you rule the tracks and roads as well.
Once installed in your Subaru, this turbocharged powerhouse can make your experience unmatched acceleration and superior control. Upgrade your Subaru today. Check out this Subaru EJ255 engine for sale here.
Engine Overview: Subaru EJ255
The Subaru EJ255 is a turbocharged, horizontally opposed four-cylinder engine. It is arguably best known for its ability to strike a balance between power and reliability. This mighty motor has featured in several Subaru models, many of whom love it for the linear power delivery and strong mid-range torque that pulls from low revs. It is also built to take performance upgrades, making it a tuner favorite when looking to extract more power. The low center of gravity in its design contributes to the superior handling characteristics that Subaru vehicles possess. On both road and track, this Subaru EJ255 engine for sale offers a balance of performance and reliability.
EJ255 vs EJ257 STI: Critical Difference Most Buyers Miss
The EJ255 and EJ257 share the same fundamental architecture but differ in one critical area:
| Feature | EJ255 (This Listing, Mainstream Turbo) | EJ257 (WRX STI Variant) |
|---|---|---|
| HP | 224-265 HP | 300-305 HP |
| Torque | 226-244 lb-ft | 290 lb-ft |
| Turbocharger | IHI VF52 typical | IHI VF48 typical |
| Connecting Rods | Cast | Forged |
| Crankshaft | Cast | Cast |
| Pistons | Cast | Cast |
| Compression | 8.4:1 | 8.2:1 |
| Block | Open-deck | Open-deck (semi-closed on later) |
| Common Applications | WRX, Forester XT, Legacy GT, Outback XT | WRX STI only |
| Stock Block Safe Power | ~350 HP | ~400-450 HP |
| Stock Price (Used) | $1,200-2,800 | $3,500-7,500 |
The cast vs forged connecting rod difference is critical. EJ255 cast rods are perfectly adequate for stock operation and modest power increases (up to ~350 HP). The EJ257’s forged rods are designed for the STI’s higher boost levels and provide significantly more headroom for tuning. For replacement applications: always match the engine variant to your vehicle , using an EJ255 in an STI loses power (vs the EJ257), while using an EJ257 in a WRX is overkill (and more expensive).
EJ255 Generations and Variants
The EJ255 had different specifications across applications:
Early WRX (2006-2007) , Live Page Stock Specifications
HP: 224 HP at 5,200 RPM
Torque: 226 lb-ft at 2,800 RPM
Turbocharger: IHI VF52
Production: 2006-2007 WRX (the first 2 years of the 2.5L WRX)
Note: This matches the live page header specifications
Later WRX (2008-2014)
HP: 224 HP (2008), 265 HP (2009+ with refinements)
Torque: 226-244 lb-ft
Production: 2008-2014 WRX (GR/GV chassis hatchback and sedan generations, plus VA chassis 2015 final year WRX which still used a refined EJ255 before transition to FA20DIT)
Note: The 2009 WRX got a power bump to 265 HP
Forester XT (2005-2013)
HP: 224-230 HP
Torque: 235 lb-ft
Production: 2005-2013 Forester XT
Intercooler: Top-mount (TMIC)
Legacy GT and Outback XT (2005-2012)
HP: 243 HP (standard Legacy GT) to 265 HP (Legacy GT spec B with STI tuning)
Torque: 241-244 lb-ft
Intercooler: Side-mount (SMIC) , different layout from WRX
Note: The Legacy GT spec B is the highest-output factory EJ255 variant
Baja Turbo (2004-2006, Rare)
HP: 210 HP (early EJ255 in Baja with detuning)
Production: 2004-2006 limited production
Vehicle Applications
| Vehicle | Years with EJ255 | Notes |
|---|---|---|
| Subaru WRX | 2006-2014 | Replaced older EJ205 in 2006 with the 2.5L upgrade |
| Subaru Forester XT | 2005-2013 | The first-generation turbo Forester |
| Subaru Legacy GT | 2005-2012 | The performance Legacy variant, spec B reaches 265 HP |
| Subaru Outback XT | 2005-2009 | Performance Outback variant, side-mount intercooler |
| Subaru Baja Turbo | 2004-2006 | Rare Baja turbo variant |
Key Engineering Features
Flat-4 Horizontally Opposed Boxer Configuration: Subaru signature architecture, lower center of gravity than inline-4
DOHC Per Bank: Dual overhead camshafts per cylinder bank, 16 valves total
AVCS on BOTH Intake AND Exhaust: Major improvement over older EJ205 turbo (which had AVCS intake only) , enables better power delivery, emissions, and tuning flexibility
IHI VF52 Turbocharger: Quality Japanese turbocharger, water-cooled bearing housing
Intercooled: Top-mount (TMIC) on WRX / Forester XT, side-mount (SMIC) on Legacy GT / Outback XT
Open-Deck Aluminum Block: Lightweight, but with documented limitations at high boost
Cast Connecting Rods: Adequate for stock operation, limiting factor at high power (vs EJ257 STI’s forged rods)
Premium Fuel Required: 91 octane minimum, 93 octane recommended
Common EJ255 Service Items (Honest Disclosure)
Ringland Failures (Most Critical Service Item)
The most well-known EJ255 weakness. Cast pistons can develop ringland failures (the lands between piston rings crack), causing loss of compression and engine failure.
Risk factors: High boost (over 18 PSI on stock pistons), detonation (low octane fuel, poor tuning), lean air/fuel ratios
Mitigation: Always use premium fuel (93 octane recommended), avoid detonation, proper tuning for any modifications, conservative boost levels
For serious builds: Forged pistons are mandatory for any sustained 350+ HP operation
Connecting Rod Bearing Wear
At high mileage (100,000+ miles), rod bearing wear is documented , especially with the cast rod design. Symptoms: rod knock at startup or under load. Cost: $2,500-5,000 for bottom-end rebuild.
Head Gasket Failures
Less common than NA EJ25 SOHC engines (which are notorious for head gaskets) but documented at high mileage and with aggressive use. Open-deck block design contributes. Multi-layer steel (MLS) gaskets recommended at any installation.
AVCS Solenoid Failures
At 80,000-120,000 miles, AVCS solenoids on intake or exhaust can develop failures producing check engine codes and reduced upper-RPM power. Service: replace AVCS solenoid ($150-300 part each).
Turbocharger Service Items
Oil seal leaks: Producing blue smoke
Bearing wear: Producing turbo whine
Shaft play: Indicates imminent failure
VF52 service interval: Often turbo rebuild or replacement needed at 100,000-150,000 miles
Banjo Bolt Screen Blockage
Common cause of turbo oil starvation on EJ-series turbo engines. Should be inspected at any service interval. Failure causes catastrophic turbocharger failure.
Spark Plug Service
30,000-60,000 mile interval. NGK iridium plugs recommended.
Why Choose a Used Subaru EJ255 Engine?
Cost savings vs reman ($1,499 used vs $3,000-4,500 reman plus core)
Direct OEM fit for WRX, Forester XT, Legacy GT, Outback XT applications
AWD compatibility , direct mate for Subaru’s symmetrical AWD
Strong aftermarket , extensive performance parts catalog
Tuning potential , 300-350 HP achievable with bolt-ons on stock internals
Variant matching , we ensure EJ255 (not EJ257) for non-STI applications
For higher power 350+ HP builds, consider stepping up to the EJ257 STI variant (forged rods) or the Cosworth EJ257 (closed-deck + full forged internals) , see separate product listings.
Here at Vaz Auto Solutions, you’ll find this Subaru EJ255 engine for sale at the most reasonable price possible, with variant verified (EJ255 specifically), donor vehicle confirmed, all 4 cylinders compression tested, turbocharger condition verified, AVCS function tested on both intake AND exhaust, ringland condition assessed (critical), connecting rod bearing wear inspected, and complete inspection.
Vehicle Compatibility
Direct Fit:
| Subaru WRX (non-STI) | 2006-2014 with EJ255 turbo (replaced EJ205 in 2006) |
|---|---|
| Subaru Forester XT | 2005-2013 with EJ255 turbo |
| Subaru Legacy GT | 2005-2012 with EJ255 turbo (spec B reaches 265 HP) |
| Subaru Outback XT | 2005-2009 with EJ255 turbo (side-mount intercooler) |
| Subaru Baja Turbo | 2004-2006 rare turbo Baja variant |
Condition and Inspection
Variant verified (EJ255 specifically, NOT EJ257 STI variant)
Donor vehicle confirmed (WRX, Forester XT, Legacy GT, or Outback XT)
All 4 cylinders compression tested
Oil pressure verified at idle and operating speed
Turbocharger condition verified (shaft play, oil seals, bearing condition, wastegate function)
Wastegate operation tested
AVCS variable valve timing function verified (intake AND exhaust camshafts, both must function)
Ringland condition assessed (the critical EJ-turbo service item, especially with high-boost history)
Connecting rod bearing wear assessed (cast rod documented service area at high mileage)
Head gasket condition verified (open-deck block service area)
Open-deck aluminum block condition inspected
Cylinder head condition assessed (aluminum heads, warping check)
Banjo bolt screen condition checked (turbo oil supply integrity)
AVCS solenoid function verified (intake and exhaust)
Spark plug condition documented (4 NGK iridium plugs)
Coil-on-plug function verified
Coolant system function verified
Intercooler condition assessed (top-mount or side-mount per application)
Miles from donor vehicle documented where available
Variant correctly identified (EJ255 vs EJ257 distinction critical)
All 4 cylinders compression tested
Turbocharger condition verified (including shaft play)
AVCS variable valve timing tested on both intake AND exhaust
Ringland condition assessed (the critical EJ-turbo service item)
Connecting rod bearing wear inspected
Head gasket condition verified
Open-deck block inspection
Banjo bolt screen checked
Donor vehicle and mileage documented
Cross-reference assistance across WRX / Forester XT / Legacy GT / Outback XT applications
WRX / Forester XT tuning consultation
Performance modification guidance
Free freight pallet delivery to all 50 states
15 day replacement warranty on internal defects
Subaru EJ-series specialist support team
Alex Martinez (verified owner) –
Installed the Subaru EJ255 engine from Vaz Auto Solutions. It performs well with decent turbo boost, but it didn’t quite deliver the excitement I was expecting. It’s reliable and provides a solid upgrade, but the overall impact on performance is moderate. It’s a practical option for a reliable engine upgrade.
Ryan Thompson (verified owner) –
The Subaru EJ255 engine from Vaz Auto Solutions is absolutely fantastic! The turbocharged performance is robust, delivering impressive acceleration and smooth power. It’s a perfect match for my vehicle, transforming the driving experience into something exhilarating. The build quality is excellent, and it’s made a noticeable difference. This engine is a top-tier choice for any performance enthusiast!