EJ20J Subaru EngineSubaru's EJ20J engine was a 2.0litre, horizontallyopposed (or 'boxer') fourcylinder petrol engine. This article considers the naturally aspirated, EJ20J Phase I engine as it was supplied in Australiandelivered vehicles, including the 199798 Subaru SF Forester.EJ204 Subaru EngineThe Subaru EJ204 was a 2.0litre horizontallyopposed (or 'boxer') fourcylinder petrol engine with double overhead camshafts. The naturally aspirated E204 engine was initially introduced in the 2005 Subaru GD/GG Impreza and 2006 Subaru BL/BP Liberty as a more powerful alternative to the single overhead cam EJ202 engine, but effectively replaced the EJ202 when the GE/GHDiccionario de la lengua española Edición delDiccionario de la lengua española.