2006-2007 Subaru Impreza WRX STI JDM EJ207 Version 10 Spec C Engine 2.0L Turbo AVCS OEM

Experience the pinnacle of Subaru performance with this rare and highly sought-after JDM Version 10 Spec C EJ207 Engine. Sourced directly from the legendary JDM GDB "Hawkeye" Spec C platforms, this is the ultimate evolution of the EJ207 motor. Unlike standard WRX or even base STI engines, the Spec C variant features a high-flow ball-bearing twin-scroll turbocharger, enhanced oil pump, reinforced engine internals, and an aggressive Spec C ECU map designed for pure rally-bred throttle response. This is the ultimate "drop-in" powerplant for any serious enthusiast looking to achieve factory-spec race performance with a high-revving 8,000+ RPM limit.

Vehicle Specifications

• Year Range: 2006, 2007

• Make & Model: Subaru Impreza WRX STI (JDM Version 10 / Spec C GDB Platform)

• Engine Code: EJ207 (2.0L DOHC Turbocharged Boxer - Spec C Spec)

• Performance Tech: Active Valve Control System (AVCS) + Twin-Scroll Turbo Geometry

• Horsepower: Factory JDM Spec C Rated (High-output configuration)

• Redline: 8,000+ RPM Factory Capability

• Origin: Japan (Genuine Japanese Domestic Market Performance Import)

• Condition: Premium Used Performance Import (Compression tested, leak-down verified, timing assembly inspected, and certified low-mileage donor)

Vehicle Fitments

• Direct Bolt-In Compatibility: 2002-2007 Subaru Impreza WRX / STI (GD/GG Chassis).

• Upgrade Fitment: Compatible with all GD/GG chassis subframes and transmission bellhousings (5-speed and 6-speed).

• Chassis Note: Designed for the GDB Hawkeye platform. Ideal for restoration or high-performance upgrades on Bugeye, Blobeye, or Hawkeye chassis.

Included Parts

• Engine Long-Block: Complete EJ207 Spec C assembly (intake manifold, injectors, fuel system)

• Turbocharging System: Genuine JDM Twin-Scroll Ball-Bearing Turbocharger and matching Twin-Scroll Exhaust Header

• Ancillaries: Alternator, A/C compressor, power steering pump, and ignition coil packs

• Electronics: Crank/Cam sensors, MAF sensor, and Spec C AVCS solenoid set

Installation & Conversion Notes

• Twin-Scroll Setup (Critical): The Spec C EJ207 utilizes a twin-scroll turbocharger and manifold system. Ensure your downpipe is compatible with the twin-scroll exhaust housing flange (or use a twin-scroll specific downpipe) to avoid flow restriction.

• AVCS Integration: To utilize the Spec C's peak performance, the engine's AVCS system must be wired and controlled by a compatible ECU. A standalone ECU or an authentic JDM Spec C ECU swap is recommended.

• Fuel Requirements: This engine is tuned for the highest grade of Japanese fuel. Mandatory use of 93+ octane gasoline is required. A professional custom tune is strongly advised upon installation to ensure longevity and peak power in a domestic climate.

• Maintenance: We recommend installing a new factory timing belt kit and water pump prior to engine bay mounting. Use high-quality 5W-40 full-synthetic engine oil to protect the high-performance rotating assembly.