- Engine code
- EJ20 (turbo: EJ20G / EJ20K / EJ207 etc.)
- Manufacturer
- Subaru
- Configuration
- Flat-4
- Valvetrain
- DOHC 16-valve
- Aspiration
- Turbocharged
- Production
- 1989 – 2020-03
- Applications
- Subaru Legacy RS / GT (BC/BF) / Subaru Impreza WRX (GC8) / Subaru Impreza WRX STI / Subaru WRX STI
- 01
The EJ series was introduced in 1989 to succeed the EA engine; all are 16-valve horizontally opposed four-cylinders.
Source: Subaru EJ engine — Wikipedia (English) - 02
The first turbocharged EJ20G in the 1989 Legacy RS produced up to 220 PS.
Source: Subaru EJ engine — Wikipedia (English) - 03
Subaru announced at the October 2019 Tokyo Motor Show that EJ20 production would end by March 2020, marked by the WRX STI EJ20 Final Edition.
Source: Subaru EJ engine — Wikipedia (English)
Technology — The boxer
Cylinders lie flat in two opposed banks, pistons moving towards and away from each other. The layout is low and short, keeping mass near the car's centre line.
Technology page →02 — Applications in the archive
03 — Sources
- 01Subaru EJ engine – WikipediaWikipedia · reference · accessed 2026-09-26