Positioning:
Performance rally homologation special, enthusiast vehicle
Competitors:
Mitsubishi Lancer Evolution, Ford Focus RS, Honda Civic Type R
Performance Focus:
Symmetrical All-Wheel Drive, turbocharged Boxer engine, driver-focused chassis
Value Proposition:
Comprehensive repair and maintenance guidance for a highly specialized performance vehicle
Coverage:
All Models & Repairs A-Z (Mechanical & Electrical)
Estimated Page Count:
Extensive (typically 1000+ pages for a full workshop manual)
Manual Type:
Workshop Service Repair Manual
Format:
Digital (Printable Pages, likely PDF)
Engine:
Engine mechanical, lubrication, cooling, fuel, ignition, emissions, turbocharger system
Transmission:
Manual transmission (TY856WR1CA), clutch, driveline, differentials (front, center, rear)
Brakes:
Front and rear brake systems, ABS, parking brake
Suspension Steering:
Front and rear suspension, steering system, power steering
Electrical:
Wiring diagrams, charging system, starting system, lighting, instruments, power accessories, ECU and sensor diagnostics
Body Chassis:
Body construction, exterior trim, interior trim, safety systems (airbags)
Maintenance:
Routine maintenance, fluid changes, filter replacements, tune-ups
Repair Overhaul:
Engine rebuild, transmission overhaul, suspension component replacement, brake system repair
Diagnostics:
Troubleshooting guides, symptom-based diagnostics, DTC (Diagnostic Trouble Code) interpretation
Installation:
Component installation and removal procedures
Depth:
Comprehensive from basic maintenance to advanced engine and electrical diagnostics and repair
Engine Type:
Horizontally-opposed (Boxer) turbocharged inline-4
Displacement:
2.0 Liters (1994 cc)
Bore X Stroke:
92.0 mm x 75.0 mm
Horsepower:
265 hp @ 6000 rpm (US Spec)
Torque:
253 lb-ft @ 4000 rpm (US Spec)
Fuel Injection:
Multi-point Electronic Fuel Injection (MPI)
Fuel Type:
Unleaded Premium Gasoline (91+ octane recommended)
Turbocharger Model:
IHI VF37 (twin-scroll)
Intercooler Type:
Air-to-air top-mount
NHTSA Front Crash Rating:
4/5 Stars
NHTSA Side Crash Rating:
5/5 Stars
ABS:
Standard Anti-lock Braking System (4-wheel disc)
Traction Control:
Standard (part of AWD system)
Electronic Brake Force Distribution:
Standard (EBD)
Airbags Front:
Driver and front passenger airbags
Airbags Side:
Optional front side-impact airbags
Seatbelts:
3-point height-adjustable front seatbelts with pretensioners, 3-point rear seatbelts
Oil Change Interval:
Every 3,750 miles or 3 months (severe duty) or 7,500 miles or 6 months (normal duty)
Air Filter Replacement:
Every 15,000 miles or 12 months
Spark Plug Replacement:
Every 30,000 miles (platinum type)
Coolant Replacement:
Every 30,000 miles or 24 months
Engine Oil Type:
Synthetic 5W-30 API SG or higher (check owner's manual for precise specs)
Engine Oil Capacity:
4.8 US quarts (with filter)
Transmission Fluid Type:
Subaru Extra-S or equivalent API GL-5 (manual transmission)
Differential Fluid Type:
Subaru Extra-S or equivalent API GL-5 (front and rear)
Coolant Type:
Subaru Super Coolant (Blue) or equivalent ethylene glycol-based coolant
Engine Failures:
Head gasket failures (less common on EJ257 than earlier EJ25), ringland failures due to detonation, turbocharger wear
Clutch Wear:
Clutch can wear prematurely with aggressive driving
Suspension Components:
Sway bar links, bushings, and wheel bearings can wear over time
Oil Filter Oem:
15208AA100 (example, verify for specific VIN)
Air Filter Oem:
16546AA120 (example, verify for specific VIN)
Brand Focus:
Subaru is renowned for its Symmetrical All-Wheel Drive system and horizontally-opposed Boxer engines.
Wrx Sti Lineage:
The WRX STi is a homologation special derived from Subaru's World Rally Championship (WRC) program, emphasizing performance and rally-bred technology.
Gd Gg Generation:
The 2004 model year is part of the second generation (GD/GG), which saw significant styling updates and performance enhancements compared to the first generation.
Production Years:
2002-2007 (GD/GG generation)
Manufacturing Location:
Japan
