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2000 2001 2002 2003 2004 Subaru Outback 2.0L H4 SOHC Engine JDM EJ20 EJ203 Replacement for EJ25

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Make

Subaru

Fitment

2000-2004 Subaru Outback

Mileage

47K

Engine Design

2.0L, SOHC

Engine Type

H4, Gas

Warranty

90 Days

90 Days Warranty . Compression Tested . Insured Shipping

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Feature Detail
Engine Code EJ20 / EJ203 (JDM SOHC)
Displacement 2.0 Liter
Configuration Horizontally Opposed (Flat-Four)
Valve Train SOHC 16-Valve
Replacement For USDM 2.5L EJ251 / EJ253
Horsepower Approx. 140–148 hp
Torque 137 lb-ft @ 4400 RPM

Vehicle Fitment

This engine is the top-rated replacement engine for the following North American models:

  • Subaru Outback (Base, Limited, Sedan): 2000, 2001, 2002, 2003, 2004

  • Subaru Legacy (L, GT, Brighton): 2000, 2001, 2002, 2003, 2004

  • Chassis Compatibility: BH (Wagon) and BE (Sedan) chassis (Non-Turbo models).

  • Compatibility Note: This engine replaces the 2.5L SOHC. It is not a replacement for the 3.0L H6 models.


JDM 2.0L to USDM 2.5L Swap Guide

To ensure 100% compatibility and a "first-turn" start using your original 2.5L ECU, professional Subaru technicians recommend the following "External Component Swap":

  1. Crankshaft & Camshaft Sprockets: You must transfer your original USDM 2.5L Crankshaft Sprocket and Driver-Side Camshaft Sprocket. The timing "trigger" teeth on JDM engines differ; failing to swap these will result in a "No Start" condition because the ECU won't recognize the timing signals.

  2. Intake Manifold: Transfer your original USDM 2.5L Intake Manifold onto the JDM 2.0L block. This ensures all vacuum lines, EGR configurations, and your wiring harness plug in perfectly without modification.

  3. Engine Sensors: Transfer your original USDM PCV Valve, Camshaft and Crankshaft Sensors to the JDM block.

  4. Wiring Harness: Always retain and use your original USDM Engine Wiring Harness. JDM harnesses are built for right-hand drive and will not interface with your Outback's chassis.

  5. Exhaust Manifolds: Swap your original USDM Exhaust Manifolds. JDM headers often lack the oxygen sensor bungs required for North American emissions compliance.

  6. Flexplate/Flywheel: Use your original USDM Flexplate (Automatic) or Flywheel (Manual) to ensure perfect starter engagement.

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.

Local Free Delivery

Enjoy fast and free local delivery within 30 Miles getting your parts to you quickly and securely.

Installation Available

Need help with installation? We offer expert installation services to ensure your parts are fitted correctly and efficiently.

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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