Model Variants:
2.0i, 2.5 RS, 2.5 WRX, 2.5 WRX STI (from 2004), Outback Sport
Production Years Covered:
2002-2006 (second generation, GD/GG chassis)
Document Type:
Parts catalog / parts list (EPC data)
Chassis Codes:
GD (sedan), GG (wagon)
Market:
Primarily USDM; data largely applicable to other markets with listed exceptions
Target Audience:
Parts counter staff, independent repair shops, Subaru technicians, and DIY owners sourcing replacement components
Key Advantage:
Complete illustrated parts breakdowns with factory part numbers for the entire 2002-2006 Impreza range in one searchable PDF
Key Features:
Exploded-view diagrams, part numbers, quantities per assembly, and group indexing by vehicle system
Model Coverage:
Naturally aspirated and turbocharged variants, including WRX and WRX STI-specific components
Coverage Areas:
Engine, drivetrain, suspension, brakes, body, interior, electrical, and accessories for 2002-2006 Impreza
Page Count:
N/A - varies by printing; substantial multi-hundred-page parts data
Manual Type:
Factory parts catalog / electronic parts list
Delivery Method:
Instant digital download
Binding:
Digital (PDF), printable and searchable
Engine Components:
Block, cylinder heads, pistons, gaskets, timing components, intake and exhaust manifolds
Turbocharger Group:
Turbocharger, wastegate, intercooler, oil and coolant lines (WRX/STI)
Fuel and Emissions:
Fuel pump, injectors, rails, filters, EVAP components, catalytic converters
Cooling System:
Radiator, fans, water pump, thermostat, hoses, reservoirs
Clutch and Transmission:
Flywheel, clutch kit, 5MT and 4EAT internals, diff components
AWD Driveline:
Front and rear differentials, driveshaft, front axle shafts, CV joints
Suspension:
Struts, springs, control arms, lateral links, bushings, stabilizer bars
Steering:
Rack and pinion, tie rods, power steering pump and lines
Brakes:
Calipers, discs, pads, master cylinder, ABS hydraulic unit, proportioning valves
Wheels:
Steel and alloy wheels, hub units, bearings, lug hardware
Body Panels:
Fenders, hoods, doors, quarter panels, bumpers, reinforcements
Exterior Trim:
Grilles, mirrors, moldings, lamps, spoilers, wipers
Interior:
Seats, carpet, headliner, dash panels, trim pieces, seat belts
Electrical:
Wiring harnesses, ECU, sensors, switches, relays, gauges, HVAC components
HVAC:
Compressor, condenser, evaporator, blower motor, heater core, controls
Illustrations:
Exploded-view assembly diagrams keyed to part numbers
Part Numbers:
Full factory part numbers with supersession references
Quantities:
Per-vehicle quantities required for each application
Technical Depth:
Parts breakdown to component level, including hardware and fasteners
Application Data:
Variant-specific fitment by model year, trim, and transmission type
Parts Information:
N/A - this is a parts list; it does not include pricing, torque specs, or repair procedures
File Format:
PDF (searchable, bookmarked, zoomable)
Compatibility:
Windows, macOS, Linux, iOS, and Android — any device with a PDF reader
Requirements:
A PDF reader application (e.g. Adobe Acrobat Reader, free)
Searchability:
Fully text searchable for fast lookup of any topic
Print Quality:
High-resolution digital pages, printable at full clarity
Binding Type:
N/A — digital download, no physical binding
Paper Type:
N/A — digital download, no physical paper
Primary Engine:
2.5L EJ253 SOHC naturally aspirated flat-4 (2.5 RS)
Base Engine:
2.0L EJ201/EJ202 SOHC flat-4 (early 2.0i models, select markets)
Performance Engine:
2.0L EJ205 DOHC turbocharged flat-4 (WRX)
Top Engine:
2.0L EJ207 DOHC turbocharged flat-4 with Twin Scroll turbo (WRX STI, 2004-2006)
WRX Output:
Approximately 227 hp (USDM 2002-2005), 230 hp (2006)
WRX STI Output:
300 hp (USDM 2004-2006)
2.5 RS Output:
Approximately 165 hp
Fuel System:
Sequential multi-port fuel injection
Fuel Requirement:
Premium unleaded for WRX/STI; regular acceptable for NA engines
Configuration:
Boxer (horizontally opposed) 4-cylinder, all-aluminum
Valvetrain:
SOHC 16-valve (NA) or DOHC 16-valve AVCS (turbo)
Standard Transmission:
5-speed manual (5MT, TY754/755 series) with full-time AWD
Optional Transmission:
4-speed electronic automatic (4EAT) with AWD
STI Transmission:
6-speed manual (TY856) with driver-controlled center differential (DCCD)
Drivetrain:
Symmetrical full-time AWD on all models
Center Differential:
Viscous coupling (5MT) or electronically managed (4EAT, DCCD on STI)
Rear Differential:
Open (NA), Torsen or viscous limited-slip depending on model
Wheelbase:
Approximately 99.1 in (2,520 mm)
Length:
Approximately 174-176 in depending on body style and bumper
Body Styles:
4-door sedan (GD) and 4-door wagon (GG)
Curb Weight:
Approximately 2,870-3,350 lb depending on model; WRX STI approximately 3,263 lb
Exact Figures:
N/A - confirm per variant; varies by year, trim, and transmission
Crash Test Information:
N/A - refer to NHTSA/IIHS archives for model-year-specific ratings
Airbags:
Dual front airbags; front side-impact airbags on most trims
Restraints:
Three-point seat belts with pretensioners, LATCH child-seat anchors
Structure:
Subaru Global Platform predecessor ring-shaped reinforcement frame
ABS:
4-wheel ABS standard; EBD on most models
Traction Control:
Standard on WRX STI; optional or not fitted on other trims by year
Braking (STI):
Brembo 4-piston front / 2-piston rear performance brakes
Oil Change:
Approximately every 3,000-3,750 miles (severe) or 7,500 miles (normal)
Timing Belt:
Inspect regularly; replace around 105,000 miles on EJ engines
Differential Gear Oil:
Check periodically; replace per schedule for front, rear, and center diffs
Coolant:
Replace per scheduled maintenance intervals
Engine Oil:
API-rated detergent oil, typical viscosity 5W-30; 5W-40 for STI
Transmission Fluid:
Manual trans gear oil (GL-5) or Subaru ATF for 4EAT
Coolant:
Subaru genuine long-life coolant
Known Issues:
Head gasket wear on NA 2.5L EJ253, wheel bearings, front suspension bushings
Catalog Support:
All listed wear items fully cataloged with factory part numbers
