Get quotes from trusted UK Subaru Baja engine specialists. Compare reconditioned, rebuilt and used prices for 2.5L H4 - EJ251, EJ253 & EJ255 covered. Compare supply & fit options today.
Rebuilt units from £895
Common codes: EJ251, EJ252, EJ253
Rebuilt units from £795
Common codes: EJ251, EJ252, EJ255
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Most replacements completed within 3-5 days.
The cards below cover the main engines fitted to the Subaru Baja in the UK, including documented failure causes, variant production years, and typical rebuilt engine costs based on current UK market data.
Production History
Known Failures
Specs
Petrol · 2.5L · 210-224hp · Turbocharged
Replacement Cost
Typical UK rebuilt engine: £1,495-£3,200 (supply only)
Production History
Known Failures
Specs
Petrol · 2.5L · 165-168hp · Naturally Aspirated
Replacement Cost
Typical UK rebuilt engine: £895-£2,100 (supply only)
Production History
Known Failures
Specs
Petrol · 2.5L · 165-168hp · Naturally Aspirated
Replacement Cost
Typical UK rebuilt engine: £895-£2,100 (supply only)
Customer Reviews
Rated 4.8 out of 5 by 1,081 verified customers who sourced reconditioned and used Subaru Baja engines through EngineMarket.
Jimmy
“Thanks to EngineMarket, I saved over £1,200 on my engine replacement and got matched with a great local specialist within the hour.”
Pete
“Got three quotes within an hour and chose the best deal easily. The whole process was quick, clear and stress-free.”
Sophie
“I wasn't sure what I needed, but they helped me identify the right engine and connected me with a trusted garage.”
Thanks to EngineMarket, I saved over £1,200 on my engine replacement and got matched with a great local specialist within the hour.”
- Jimmy, London
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Not sure which variant your Subaru Baja is- Enter your registration number above - we'll identify the exact sub-model, engine code and compatible replacement options instantly.
Every engine code fitted to the Subaru Baja across all generations, with technical specs, compatible variants and trims, known failure points, and average rebuilt prices from UK specialists. Select any engine code to compare quotes.
Extracted from detailed petrol and performance engine families across Subaru Baja variants.
Extracted from detailed petrol and performance engine families across Subaru Baja variants.
Can't find your engine code- Enter your registration number above - we'll instantly identify the exact unit, its technical specifications, and live replacement prices from UK Subaru Baja engine specialists. Every rebuilt engine comes with a minimum 12-month unlimited mileage warranty.
The Subaru Baja's EJ25-series boxer engines are robust but share common failure points with Legacy and Outback donors. Head gasket failure dominates replacement...
Every rebuilt engine includes a minimum 12-month unlimited mileage warranty.
Why Subaru Baja EJ25 Engines Fail Prematurely
Production Years: 2002 - 2006
Engine: EJ251 / EJ252 / EJ255
Typical failure window
Original single-layer composite gaskets degrade under heat cycles and boxer engine vibration, allowing coolant/oil cross-contamination.
| Repair Tier | Dealer Price | Specialist Price | What It Involves | Longevity / Suitability |
|---|---|---|---|---|
Minor - Head Gasket Replacement Only Minor | £1,800 - £2,800 | £1,200 - £1,900 | Remove cylinder heads, replace gaskets with upgraded MLS units, reseal | Viable only if block/heads undamaged; 30-50k mile expectation |
Full Replacement - Rebuilt / Reconditioned Engine Best Value | £3,500 - £5,200 | £895 - £3,200 + fitting | Supply & fit complete rebuilt EJ25 engine with MLS gaskets, bench-tested, warranty included | Long-term solution; 12-month unlimited warranty, addresses root cause |
On a Subaru Baja worth £3,000-£8,000, a full rebuilt engine often represents better value than a head gasket-only repair, especially if mileage exceeds 100k. We recommend rebuilt units with upgraded MLS gaskets to prevent repeat failure.
Head gasket, turbo, oil consumption, or timing belt issues don't have to mean the end for your grey import Baja. EngineMarket makes it simple to compare prices from trusted UK Subaru Baja specialists who understand boxer engine compatibility with Legacy and Outback donors. Every rebuilt engine includes upgraded components addressing the original failure point, plus a minimum 12-month unlimited mileage warranty and nationwide delivery options.
Compare Subaru Baja Engine Replacement Prices Now →
Every Subaru Baja engine type is available through our UK network, with typical price ranges based on variant, EJ engine code and budget.
Subaru Baja Reconditioned Engines (Recon)£895 - £3,200(supply only)
Subaru Baja Rebuilt Engines£895 - £3,200(supply only)
Subaru Baja Used Engines£795 - £2,400(supply only)
Subaru Baja Remanufactured Engines£1,200 - £3,500(supply only)
Complete engine replacement service including supply, fitting, fluids and warranty, through approved UK Subaru Baja specialist garages.
Every displacement fitted to the Subaru Baja in the UK is listed below, with compatible engine codes, production years and common failure notes to help you identify the right replacement.
The 2.5-litre EJ25 boxer family powered every Subaru Baja sold in the UK grey import market, from economical naturally aspirated Base models to the performance-focused Turbo Limited. This SOHC flat-four design offers smooth power delivery and AWD compatibility, though head gasket vigilance is essential for long-term reliability.
| ENGINE CODE(S) | EJ251, EJ252, EJ255 |
| COMPATIBLE MODELS (UK) | Base (2002-2006), Sport (2003-2006), Turbo (2005-2006), Turbo Limited |
| PRODUCTION YEARS | 2005-2006 |
Head gasket degradation on all EJ25 codes; turbo wear on EJ255 units; oil consumption on high-mileage examples
Not sure which engine size your Subaru Baja needs- Enter your registration number above - we'll identify the exact displacement, engine code and compatible replacement options instantly. All engines supplied through EngineMarket include a minimum 12-month unlimited mileage warranty from UK Subaru Baja specialists.
Fuel Type
Choose your Subaru Baja engine by fuel type to compare realistic replacement prices, known issues, and compatible UK supply options - from economical naturally aspirated EJ251 to performance turbo EJ255.
Every Subaru Baja sold in the UK grey import market used a 2.5L petrol boxer engine, with naturally aspirated EJ251/EJ252 units for Base/Sport trims and turbocharged EJ255 for performance variants.
Not sure which fuel type your Subaru Baja has- Enter your registration number above to instantly identify your engine code, fuel system and compatible replacement options - all backed by a minimum 12-month unlimited mileage warranty from UK Subaru Baja specialists.
This timeline covers all major engine changes across the Subaru Baja's 2002-2006 production run, organised so UK grey import owners can quickly identify their EJ25 engine code and compare rebuilt replacement prices.
Subaru Baja engine replacements typically range from £895 for used naturally aspirated units to £3,200 for rebuilt turbo EJ255 engines, supply only. Supply & fit adds £450-£850 depending on location and garage rates.
Your Baja uses either EJ251, EJ252 (naturally aspirated) or EJ255 (turbo) depending on trim and year. Enter your registration or VIN above to instantly verify your exact engine code and compatible replacements.
Used engines are tested second-hand units from breakers, while reconditioned engines are fully rebuilt with new bearings, seals and upgraded gaskets. Reconditioned units include longer warranties and address common failure points.
Most Subaru Baja engines are dispatched next-day from UK stock; fitting takes 1-2 days at approved Subaru specialists. Total turnaround from quote to road-ready is typically 3-5 working days.
Yes, all Subaru Baja engines supplied through EngineMarket include a minimum 12-month unlimited mileage warranty. Turbo EJ255 models may qualify for extended performance warranty upgrades.
Some EJ codes are interchangeable with minor modifications, but ECU, wiring and mount compatibility must be verified first. Use our compatibility checker or speak to a Subaru Baja specialist before ordering a different code.
Yes, all replacement engines supplied through EngineMarket comply with UK MOT emissions standards for grey import registration. Documentation is provided to support IVA or compliance testing if required.
Use our garage locator to find approved Subaru Baja engine specialists near your postcode. All fitters are vetted, experienced with boxer engines and recognise our network warranty.
All Subaru Baja engines come with a compatibility guarantee. If the engine doesn't fit your vehicle, we'll replace it with the correct unit or refund you in full, no questions asked.
For most grey import Baja owners, engine replacement costs £895-£3,200 versus £3,000-£8,000+ for a replacement vehicle. Rebuilt engines extend life with upgraded components and warranty protection.
Why Choose Us
Join thousands of UK drivers who compare Subaru Baja engine prices through our network of trusted specialists - every rebuilt and reconditioned unit backed by a minimum 12-month unlimited mileage warranty and nationwide delivery.
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UK Engine Replacement Services for Subaru Baja
Covering every variant from Base to Turbo Limited, with supply-only or full supply & fit available nationwide.
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