Rebuilt Subaru Dex Engine for Sale - Save Up to 60% with 12m Warranty
Compare Subaru Dex engine prices. Rebuilt EJ20/EJ25 units for GC/GF (1992-2008) with 12m warranty from UK suppliers.
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Subaru Dex Specialists
Expert Solutions for Every Dex - Base Model to Performance Model
Need a reliable replacement engine for your Subaru Dex ?
Engine Finders specializes in Dex engines with solutions for shared failure patterns across all variants.
- ✔ Full Dex Engine Range - All petrol and diesel variants across generations
- ✔ Series-Wide Calibration - Correct ECU mapping for every Dex chassis configuration
- ✔ Dex Pricing Advantage - Save significantly vs dealer costs on common repairs
Subaru Dex Replacement Engines Options - Verified Units (UK Supply)
All engines bench-tested, VAT-inclusive, with 12-month warranty. MoT-compliant. Nationwide delivery. Direct OEM fitment for [CHASSIS CODES].
High-performance rebuilds with OEM parts for optimal reliability.
Fully stripped and rebuilt to factory specs with updated components.
Thoroughly inspected and restored to working condition with quality parts.
Direct swap engines for minimal downtime with complete compatibility.
Cleaned, tested, and performance-tuned units for reliable operation.
Affordable options with verified mileage and comprehensive history checks.
Subaru Dex Compatible Engine Codes & Average Prices on Rebuilt Units
All engines professionally reconditioned, bench-tested, and supplied with 12-month warranty. Direct OEM fitment. VAT-inclusive. Nationwide UK delivery.
Why Choose Engine Finders for Your Subaru Dex Engine?
Engine Finders connects UK drivers with vetted specialists for reliable, reconditioned Subaru Dex replacement engines. From EJ and FB series petrol engines found across the Dex range, to addressing common head gasket issues and timing chain wear that affect various Dex models throughout their production years, we provide series-specific solutions. Whether you're battling EJ20 head gasket failures across early Dex models or FB16 timing chain problems in later variants, Engine Finders makes it easy to locate the right engine, fast.
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✔ Dex Series EJ Head Gasket Resolution: We upgrade gaskets (OEM 11520AA16A) and related components across all EJ-series engines in Dex models using Subaru Technical Service Bulletins-compliant parts.
Our specialists address the common head gasket failures found across EJ15, EJ16, EJ18, and EJ20 engines in various Dex models, using upgraded materials that prevent recurring failures. We follow Subaru's technical guidance for all EJ-series applications in the Dex range.
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✔ FB Series Timing Chain Solutions: Complete timing chain kits (OEM 11520AA18A) for FB10, FB15, and FB16 engines across all Dex variants with updated tensioners and guides.
FB-series engines in Dex models commonly experience timing chain wear after 80k miles. Our rebuilt engines include upgraded components that address the root causes of chain stretch and tensioner failure across all FB-series applications in the Dex range.
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✔ Dex Engine Mount Compatibility: Correct engine mounts (OEM 11350AA16A) for all Dex chassis configurations ensuring proper fitment across EJ and FB engine families.
All Dex models share similar engine bay configurations, but mount specifications vary between EJ and FB engines. We ensure proper mounting compatibility for seamless installation across all Dex variants from 2008-2017 model years.
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✔ ECU Calibration Across Dex Range: Proper ECU mapping for all Dex engine variants ensuring optimal performance and emissions compliance post-installation.
Whether your Dex uses EJ15, EJ20, FB15, or FB16 engines, our specialists provide correct ECU programming that matches the specific engine's power output and emissions requirements for seamless integration with your Dex's systems.
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✔ Cooling System Optimization: Complete cooling components (OEM 14100AA18A) for all Dex engine applications addressing common overheating issues in EJ-series units.
EJ-series engines in Dex models are prone to cooling system failures. Our rebuilt engines include upgraded water pumps, thermostats, and related components specifically designed for Dex cooling system configurations to prevent recurring overheating problems.
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✔ Oil System Enhancement: Upgraded oil pumps and related components (OEM 11300AA15A) for all Dex engines addressing common wear patterns in EJ and FB series units.
Both EJ and FB series engines in Dex models can experience oil pump wear and related issues. Our rebuilds include upgraded oil system components that prevent the common oil pressure problems that affect these engine families throughout the Dex series.
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✔ Dex-Specific Technical Documentation: Access to complete service bulletins and technical information covering all Dex engine families for comprehensive rebuild specifications.
Our specialists reference Subaru's technical documentation covering the entire Dex range, ensuring all rebuilds meet factory specifications for EJ and FB series engines. This includes addressing known issues and implementing factory updates across all applicable Dex variants.
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✔ Comprehensive Dex Parts Coverage: Genuine and upgraded components for all Dex engine families ensuring long-term reliability and proper fitment.
We stock both OEM and upgraded parts specifically for Dex engines, including critical components that address known failure points in EJ and FB series units. This ensures your replacement engine will have the best chance of long-term success in your Dex model.
Rated 4.9 out of 5 by 1081 satisfied customers who choose reconditioned and used Subaru engines through Engine Finders.
Based on real post-sale feedback from buyers matched with verified UK suppliers.
Subaru Dex Engines for Sale | Engine Finders
Engine Finders connects UK drivers with specialists for reliable, reconditioned Subaru Dex replacement engines. Whether battling EJ20/EJ25 timing chain failures across early models or boxer engine oil consumption issues in later variants, we provide direct OEM-spec solutions.
Subaru Dex Replacement Engines
The Subaru Dex evolved through critical generations with EJ-series boxer engines from 1999-2008. All EJ20 engines (1999-2008) suffered timing chain tensioner failures addressed in Service Bulletin TSB-09-04-03, while EJ25 petrol variants shared oil consumption issues due to identical piston ring designs. The later EJ20T turbo variants (2002-2008) experienced intercooler and boost control problems regardless of trim level, with shared cooling system vulnerabilities affecting all turbocharged models. All Dex generations utilized identical boxer engine mounting systems, creating consistent vibration-related component wear patterns across the entire series.
Subaru Dex Models & Engines Codes
The Dex series utilized several engine families across generations, with shared components and failure patterns affecting multiple variants within each family.
- EJ20: 2.0L naturally aspirated boxer (1999-2008) - Timing chain tensioner (21030AA15A) failure across all variants
- EJ25: 2.5L naturally aspirated boxer (2000-2008) - Oil consumption issues due to shared piston ring design
- EJ20T: 2.0L turbocharged boxer (2002-2008) - Intercooler and boost control system failures in all turbo variants
- EJ18: 1.8L naturally aspirated boxer (1999-2004) - Head gasket issues affecting early generation models
All engine families share common boxer engine characteristics including horizontally opposed cylinder configuration and shared mounting systems across the entire Dex series, creating identical vibration and stress patterns regardless of specific variant.
Buy Used and Second-Hand Subaru Dex Engines
For Dex owners: Used engines carry high risk due to shared EJ20/EJ25 failure patterns. Reconditioned units with updated timing components (21030AA15A) are essential for pre-2008 models. Remanufactured engines with upgraded oil control systems are recommended for all EJ25 variants regardless of trim level.
- Used engines: High risk due to shared timing and oil consumption issues
- Reconditioned engines: Updated components for known failure points
- Remanufactured engines: Complete rebuild with upgraded parts
- Long block assemblies: Core components with updated internals
All engines undergo quality assurance checks to ensure compatibility across the entire Dex series, with verification of mounting points, bell housing fitment, and accessory drive systems.
Subaru Dex Engines in Stock
Our reconditioned Dex engines include comprehensive rebuild specifications addressing known series-wide issues across all EJ engine families.
- New timing chains and tensioners (21030AA15A) per TSB-09-04-03
- Upgraded piston rings and oil control systems
- Reconditioned cylinder heads with new valve guides
- New gaskets and seals for complete engine rebuild
- Verified mounting hardware and bell housing compatibility
All units undergo 2-hour dyno tests simulating real-world loads across EJ20-EJ25 power bands, with compression checks meeting Subaru technical standards for the entire series.
Warranty for Replacement Subaru Dex Engines
12-month warranty on all rebuilt engines covering the complete Dex series range.
- 12-month/12,000-mile warranty on all engine internals
- Timing chain components excluded due to design flaws per TSB-09-04-03
- Oil consumption issues excluded for high-mileage EJ25 units
- Installation and labor costs not covered
- Warranty valid only with proper maintenance records
Engine Finders is a price comparison website - warranty terms are set by our vetted UK suppliers. Final coverage varies by engine family and mileage.
Expert Tips for Choosing the Right Engine for Your Subaru Dex
♻️ Subaru Dex Engine Types Explained
- Used engines for Dex: High risk due to shared EJ20 timing issues
- Reconditioned EJ20 engines: Updated tensioners for 1999-2008 models
- Remanufactured EJ25: New internals with oil consumption fixes
- Long block assemblies: Core components with Dex-specific fitment
£ Subaru Dex Replacement Engine Cost in the UK
- EJ20 engines (1999-2008): £2,200-£2,800 for reconditioned units
- EJ25 engines (2000-2008): £2,500-£3,200 due to oil control issues
- EJ20T turbo engines: £3,000-£3,800 with intercooler components
- Save up to 40% vs dealer prices for Dex engine replacements
🔍 Finding the Right Subaru Dex Engine
- Check VIN for EJ20/EJ25 engine codes specific to your Dex year
- Verify mounting points match Dex boxer engine configuration
- Confirm accessory drive compatibility for your trim level
- Request EJ engine rebuild history for pre-2008 Dex models
⛽ Subaru Dex Petrol vs Diesel Engines
- Dex had no diesel options - all EJ20/EJ25 were petrol boxer engines
- EJ20: Better fuel economy but timing chain tensioner issues
- EJ25: More power but oil consumption problems in later years
- ULEZ compliant: All Dex engines meet Euro 4 emissions standards
🔒 Quality Assurance & Warranty
- EJ20 timing chain tensioners (21030AA15A) replaced per TSB-09-04-03
- Compression tests meet Subaru ISTA standards for Dex engines
- 12-month warranty on all EJ engine rebuilds for Dex models
- Piston ring upgrades included for EJ25 oil consumption fixes
🛒 Compare & Save on Subaru Dex Engines
- Compare multiple suppliers for EJ20 engine timing fixes
- Look for suppliers with Subaru TSB-09-04-03 compliance
- Verify EJ engine compatibility with Dex mounting systems
- Request dyno test results for Dex-specific load profiles
⚙️ Subaru Dex Engine Works: How Experts Rebuild Engines
When your engine fails, Subaru Dex engine works can restore performance at a fraction of the cost of a brand-new engine. From diagnostics to rebuild, here's how experts ensure optimal results.
1. Complete Engine Strip-Down: Experts disassemble your EJ20/EJ25 engine completely, cataloging each component. They inspect the boxer engine block for stress cracks and measure bore wear specifically for Dex engine tolerances.
3. Cylinder Head Refurbishment: For Dex EJ engines, cylinder heads undergo valve guide replacement and seat machining. Experts check for warping and resurface heads to Subaru specifications, ensuring proper compression for boxer configuration.
5. Timing System Installation: Critical for Dex engines - new timing chains, guides, and tensioners are installed per TSB-09-04-03. Experts use specialized tools to ensure proper boxer engine timing alignment and prevent future failures.
2. Block Machining & Boring: The EJ engine block is cleaned, magnafluxed for cracks, and bored to size if needed. Experts maintain precise tolerances for the boxer configuration and install new camshaft bearings specific to Dex specifications.
4. New Internal Components: Fresh pistons, rings, and connecting rods are installed with Dex-specific compression ratios. Main and rod bearings are torqued to Subaru specifications for optimal performance and longevity.
6. Final Assembly & Testing: The rebuilt EJ engine undergoes 2-hour dyno testing simulating Dex driving conditions. Experts verify oil pressure, compression, and performance parameters before final quality inspection.