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2018 - 2022 Subaru Forester Legacy Outback 2.5L DOHC AVCS Timing Chain Engine JDM FB25 OEM

Sale price $1,899.99
Delivery & pickup
  • California2–5 business days $130–$180
  • Other statesLower 48 · usually 6–8 business days $180–$400
  • Pickup in Chino, CAUsually ready in 24 hours Free

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Make

Subaru

Fitment

2018 - 2022 Subaru Forester Legacy Outback

Mileage

48K

Engine Design

2.5L, DOHC

Engine Type

AVLS, AVCS

Warranty

90 Days

4.9 129 Google reviews
90-day warranty On every unit
Compression tested Before it ships
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Feature Specification
Engine Code FB25 / FB25D
Displacement 2.5 Liters (2,498 cc)
Configuration Horizontally Opposed 4-Cylinder (Boxer)
Valvetrain DOHC, 16 Valves, Dual AVCS
Timing Mechanism Silent Timing Chain (Dual Chain System)
Bore x Stroke 94.0 mm × 90.0 mm
Compression Ratio 12.0:1
Horsepower Output ~182 hp @ 5,800 RPM
Torque Output ~176 lb-ft @ 4,400 RPM
Fuel Delivery Direct Injection / EFI (depends on USDM manifold setup)

Vehicle Fitment

This JDM FB25 long block serves as a replacement for the following USDM Subaru 2.5L 4-cylinder models:

  • 2019–2022 Subaru Forester (2.5L Base, Premium, Sport, Limited, Touring)

  • 2018–2022 Subaru Outback (2.5L Base, Premium, Limited, Touring)

  • 2018–2022 Subaru Legacy (2.5L Base, Premium, Sport, Limited)

USDM to JDM Swap Guide (FB25 2.5L Engine)

Installing a JDM FB25 engine into a USDM Subaru require using the imported motor as a bare long block. Because Japanese right-hand drive (RHD) wiring harnesses, emissions equipment, and sensor connectors differ from US market requirements, transferring your original USDM external components guarantees a direct fit without triggering Check Engine Lights (CEL).

1. Strip JDM Engine Down to Long Block: Preparation.

Unbolt and remove the Japanese wiring harness, external brackets, intake plenum, and sensors from the JDM engine. Clean all mating surfaces thoroughly.

Verification: Confirm the engine is stripped to the cylinder heads, short block, timing chain cover, and valve covers.

2. Transfer USDM Intake Manifold & Fuel System: Intake & Fuel System Setup.

Unbolt your original USDM intake manifold (including throttle body, fuel rails, direct injectors, and high-pressure fuel pump if applicable) and install it onto the JDM long block using new intake gaskets.

Verification: Inspect intake port seals to ensure zero gap or potential vacuum leak paths exist.

3. Swap Engine Wiring Harness & Electronic Sensors: Electrical & Sensors.

Do NOT attempt to plug the JDM wiring harness into your USDM vehicle. Transfer your original USDM engine wiring harness and bolt-on sensors onto the JDM engine:

  • Camshaft and Crankshaft Position Sensors

  • AVCS Variable Valve Timing Solenoids (Intake & Exhaust)

  • Coolant Temperature Sensor & Knock Sensor

  • Alternator, A/C Compressor, and Starter Motor

Verification: Plug in every connector from the USDM harness; ensure each plug locks securely into a matching original sensor port without stretching.

4. Swap Oil Pan & Flexplate / Flywheel: Drivetrain & Sump Inspection.

Inspect the oil pan clearance and sump depth relative to your chassis. Transfer your USDM oil pan and pickup tube if any mounting differences exist. Install your original USDM flexplate (CVT automatic) or flywheel (manual) using fresh threadlocker on the bolts.

Verification: Rotate the crankshaft pulley 360 degrees by hand to confirm smooth, unobstructed rotation before engine bay insertion.

5. Fluid Fill, Cooling System Bleed & Initial Startup: Final Installation.
  1. Lower the engine into the bay, bolt it to the CVT transmission housing, and torque motor mount fasteners.

  2. Fill engine with fresh 0W-20 synthetic motor oil and genuine Subaru Super Coolant.

  3. Bleed the cooling system thoroughly using a spill-free funnel to purge air pockets from the horizontal heater core lines.

Verification: Start the engine, let it reach full operating temperature, confirm cooling fans cycle on, and scan for active diagnostic fault codes using an OBD-II tool.

All Star JDM offers limited warranty coverage on eligible used engines and transmissions. Used replacement engines and transmissions are generally covered for 90 days, while used performance engines and performance transmissions are generally covered for 30 days unless otherwise stated on the sales receipt. Rotary engines and parts are sold as-is with no warranty coverage.

The warranty covers eligible internal engine components, engine block, cylinder walls, and cylinder head against cracks or defects. External parts, electronics, accessories, improper installation, negligence, and installation-related failures are not covered.

Warranty claims require a written description, pictures, videos, and a valid report from a certified mechanic. Returned items must be in the same condition as sold, fully assembled, and include all original parts/components included in the sale.

For full details, please review our complete warranty policy.

JDM All Star offers a 30-day return policy, meaning customers have 30 days after receiving their item to request a return. Returned or refused orders may be subject to a 25% restocking fee, and original shipping charges plus return shipping costs are the customer’s responsibility.

Engines, transmissions, and automotive parts must be returned in the same condition as delivered. Returns will not be accepted if the item has been disassembled, modified, or parted out.

JDM All Star is not responsible for shipping damage, installation costs, labor, transport, or other related expenses. For return requests or questions, customers can contact sales@allstarjdm.com.

For full details, please review our complete refund policy.

All Star JDM offers specialized shipping with surcharges for services like liftgate delivery. They promise same-day shipping for orders before 1 PM PST, with next-day dispatch for later orders. Shipping is within the 48 contiguous states, with special arrangements for other US territories. Customers receive tracking numbers and are responsible for return shipping costs. Queries can be directed to their customer service. Shipping policy acceptance is required.

All Star JDM's terms require users to comply with conditions when using their website and services. It includes accepting terms upon access, being of legal age, and the right to refuse service. Information may not always be accurate, and service and prices can change without notice. They offer online-exclusive products, reserve order refusal rights, and may use third-party tools and materials. Users' feedback may be used freely, and personal information is protected under their Privacy Policy.

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Warranty

Warranty Purchase with confidence—our parts come with a 90-day warranty non performance & 30 day on performance to guarantee your satisfaction and peace of mind.

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