2006 Subaru Impreza WRX STI 2.5L Turbo Engine Assembly

Application: 2004-2007 US-market Impreza WRX STI; confirm donor and recipient details
Engine Code: EJ257
Displacement: 2.5L / 2,457 cc
Configuration: Turbocharged DOHC 16-valve flat-four
Fuel System: Multi-port fuel injection
Factory Output: 300 hp / 300 lb-ft (2006 US rating)
Block / Heads: Aluminum alloy / Aluminum alloy
Aspiration: Single turbocharger
Condition: Used OEM engine; inspect cylinder health and turbo separately before installation
Included: Long block; turbocharger, intercooler, wiring, and peripherals only if shown in unit-specific listing
Fitment Note: Intake, emissions equipment, and electronics vary by model year