1999 2000 2001 2002 2003 2004 2005 Subaru Forester 2.0L H4 SOHC Engine JDM EJ20

Description

Estimated donor mileage: 45,000–65,000 miles.

Compression Tested: This engine was individually compression tested.

Feature	Details
Engine Code	EJ20 (SOHC Variant)
Displacement	2.0 Liters (1,994 cc)
Configuration	Flat 4-Cylinder “Boxer”
Valvetrain	SOHC 16-Valve
Compatibility	Direct Long Block replacement for EJ251 / EJ253
Condition	Used JDM import; see the mileage estimate above.

Vehicle Fitments (Replacement for 2.5L Models)

This JDM EJ20 long block is the ideal replacement for the following USDM models equipped with a Single Overhead Cam (SOHC) 2.5L:

• 1999-2005 Subaru Forester (All SOHC models)

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Installation & Technical Notes (EJ25 to EJ20 Swap)

To ensure a “plug-and-play” installation and satisfy your vehicle’s ECU, you must perform the following component transfers from your original 2.5L engine:

• Intake Manifold & Sensors: Transfer your original USDM intake manifold, fuel injectors, and wiring harness. This ensures all electrical plugs and vacuum lines match your vehicle exactly.

• Crank & Cam Gears: You must swap your original USDM Crankshaft Sprocket and Left-Hand (Driver Side) Camshaft Sprocket. The JDM trigger points are often different; using your original gears ensures perfect ignition timing and prevents “Check Engine” lights.

• Flex plate/Flywheel: Transfer your original flex plate (Automatic) or flywheel (Manual) to ensure the starter and transmission mate correctly.

• Essential Maintenance: We strongly recommend replacing the following parts during the swap:

  • Timing Belt & Water Pump: Highly recommended while the engine is out.

  • Spark Plugs: NGK G-Power (BKR6EGP).

  • Oil Cooler/Filter Housing: Inspect for leaks and use a fresh Subaru OEM Blue filter.

  • Rear Main Seal: A low-cost part that is best replaced before the engine is mated to the transmission.

Shipping & delivery

Standard orders are normally handled and processed in 1 business day, Monday through Saturday, after payment is confirmed and product availability has been verified. Estimated carrier transit is 1-2 days after dispatch, with transit days Monday through Saturday. Combined with the 1 handling period above, the estimated total delivery time is 1-3 business days for standard destinations. These are estimates, not guarantees. Oversized or freight shipments, deliveries to Alaska, Hawaii, or U.S. territories, and deliveries requiring carrier appointments may take longer or require a separate quote. See our Shipping Policy.