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90 Days Warranty
90-day warranty for non-performance engines, 30 days for performance. Covers internal parts, excludes labor. Read more
Product Information
2013 2014 2015 2016 2017 2018 Subaru Outback 2.5L DOHC AVCS Engine JDM FB25 Timing Chain
Upgrade Your Subaru Outback with a Premium Low-Mileage JDM FB25 Engine.
Restore your vehicle's performance with our high-quality, imported Japanese Domestic Market (JDM) FB25 engine. Sourced from low-mileage vehicles in Japan, this 2.5L DOHC Boxer motor features the reliable timing chain design, offering superior internal condition compared to high-mileage domestic alternatives. Ideal for direct replacement or a reliable engine swap, this complete long block provides the smooth power delivery and fuel efficiency your Outback was built for.
Vehicle Specifications
• Engine Code: FB25
• Displacement: 2.5L (2,498cc)
• Configuration: Boxer (Flat 4-Cylinder)
• Valvetrain: DOHC 16-Valve (Timing Chain Driven)
• Condition: Low-Mileage JDM Import (Tested)
• Fuel Type: Gasoline
Vehicle Fitments
This engine is compatible with the following North American models equipped with the 2.5L FB25 engine:
• Subaru Outback: 2013, 2014, 2015, 2016, 2017, 2018 (2.5i Models)
• Subaru Legacy: 2013, 2014, 2015, 2016, 2017, 2018
• Subaru Forester: 2011, 2012, 2013, 2014, 2015, 2016, 2017, 2018
Note: Ensure your vehicle currently uses the FB-series engine (timing chain). This is not a direct swap for EJ-series (timing belt) models.
Included Parts
• 1 x FB25 Complete Engine Long Block (Cylinder Head & Engine Block)
• Timing Chain Assembly
• Valve Cover & Oil Pan
• Included accessories (Alternator, AC Compressor, Power Steering Pump) are bonus items provided as-is.
Installation & Notes
• Component Transfer: To ensure 100% emissions and ECU compatibility, you must transfer your original USDM intake & exhaust manifolds, wiring harness, and all sensors (Crank, Cam, Knock, etc.) to the JDM block.
• Preventative Maintenance: We strongly recommend installing new spark plugs, a water pump, and fresh gaskets prior to installation.
• Professional Install: Professional installation by a certified technician is strictly required to validate the performance and warranty.
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