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Subaru

2004 Subaru Impreza Impreza WRX Impreza WRX STi Workshop Repair & Service Manual [Complete & Informative for DIY Repair]

2004 Subaru Impreza Impreza WRX Impreza WRX STi Workshop Repair & Service Manual [Complete & Informative for DIY Repair]

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Vehicle data plateRef 365874
Brand
Subaru
Vehicle
Home and Garden
Models covered
Guns Firearms Weapons, Impreza, Impreza WRX, Impreza WRX STi, Sporting Goods, Sti
Years
2004
Format
PDF, searchable, print-ready
Delivery
Instant download after checkout
Language
English

What happens after you pay

  • Download link opens on the order page immediately
  • The same link is emailed to you โ€” re-download any time
  • Open on phone, tablet or PC; print only the pages you need
  • Not sure it covers your model year? Ask us before you buy
๐Ÿท๏ธ Basic Information
Identification
Make:
Subaru
Model:
Impreza
Model Variants:
Impreza WRX, Impreza WRX STi
Model Year:
2004
๐Ÿ‘‹ Introduction
Market Position
Target Audience:
DIY enthusiasts, home mechanics, Subaru WRX/STi owners
Competitive Analysis
Value Proposition:
High-quality, complete official service information, superior to cheaper, incomplete alternatives
Key Features
Manual Attributes:
Complete, informative, official, high-quality, diagrams, illustrations, troubleshooting, detailed specifications
๐Ÿ“‹ Manual Details
Coverage Areas
Covered Models:
2004 Subaru Impreza, Impreza WRX, Impreza WRX STi (all models covered)
Page Count
Completeness:
Complete, no missing pages
Manual Type
Type:
Workshop Repair & Service Manual
Language
Language:
English
Format
File Format:
PDF
Delivery Method
Delivery:
Instant download link via email after payment
Customer Support
Guarantee:
Customer Satisfaction Guaranteed, issue resolution within hours
Refund Policy
Policy:
Replacement link or 100% refund if there are problems or if seller is at fault
๐Ÿ“– Manual Coverage
Systems Covered
Engine Service:
Complete engine service, disassembly, reassembly, engine removal
Fuel System:
Fuel and Lubrication Systems, Carb Rebuild, Carb Adjustments (where applicable)
Electrical System:
Ignition, Charging, Starter, Battery, Switches, Wiring Diagrams
Chassis Suspension Steering:
Wheels, Brakes, Steering, Suspension, Axles, CV Joint Service Procedures, U-Joint Service Procedures, Front Suspension
Transmission Drivetrain:
Gearbox Service, Gearbox Removal and Installation, Clutch Removal and Installation, Transmission
Bodywork Exterior:
Bodywork
Cooling Exhaust:
Cooling System, Exhaust System, Exhaust Service
Procedures Included
Maintenance Tune Up:
Periodic Maintenance and Tune-Up Procedures, Factory Maintenance Schedules
Diagnostics Troubleshooting:
Fault Finding
Repair Rebuild:
All Factory Repair Procedures, Detailed Specifications
Technical Depth
Depth:
Comprehensive DIY repair, access to professional technician information, complete rebuilds
Technical Areas
General Information:
General Information, Specifications, Lube Points, Oil Types
Tools And Torques:
Tools, Tightening Torques, Service Data
Wiring And Routing:
Wire/Cable/Hose Routing
Documentation Style
Illustrations:
Abundant Illustrations, Lots of pictures & diagrams
๐Ÿ“Š Manual Specifications
File Format
Compatibility:
Cross-platform PDF, works on Windows/Mac/Linux
Print Quality
Printability:
Printable manual with diagrams
Binding Type
Digital Format:
Digital Download (Instant Delivery)
Paper Type
User Access:
Unlimited use, no restrictions
โš™๏ธ Engine Specifications
Primary Engine
Engine Type:
Turbocharged Boxer (EJ205 for WRX, EJ257 for STi - specific variant coverage depends on manual detail)
Performance
Typical Horsepower Wrx:
Approximately 227 hp @ 5600 rpm
Typical Torque Wrx:
Approximately 217 lb-ft @ 3500 rpm
Typical Horsepower Sti:
Approximately 300 hp @ 6000 rpm
Typical Torque Sti:
Approximately 300 lb-ft @ 4000 rpm
Fuel System
Fuel Delivery:
Electronic Fuel Injection (EFI)
Engine Management
Ignition System:
Distributorless Ignition System (DIS) with Coil-on-Plug (COP)
Engine Firing Order:
1-3-2-4
Engine Variants
Engine Codes:
EJ205 (WRX), EJ257 (STi)
Engine Features
Forced Induction:
Turbocharged
๐Ÿ”ง Transmission
Standard
Type:
5-speed Manual (WRX), 6-speed Manual (STi)
Optional
Automatic Transmission:
Not typically offered for WRX/STi models in this generation
Features
Drivetrain:
All-Wheel Drive (AWD) with Active Torque Split (Subaru's Symmetrical AWD)
Transmission Features
Center Differential:
Mechanical or Viscous coupling center differential (depending on specific WRX/STi variant)
๐Ÿ“ Dimensions
Exterior
Body Style:
Sedan and Wagon (specific availability may vary by market/trim)
Weights
Curb Weight Wrx:
Approximately 3100-3200 lbs (depending on body style)
Curb Weight Sti:
Approximately 3250-3350 lbs (depending on body style)
Wheel Specs
Bolt Pattern:
5x100mm
Wheel Size Wrx:
17x7 inches (typical)
Wheel Size Sti:
17x7.5 inches (typical)
๐Ÿ›ก๏ธ Safety Features
Ratings
NHTSA Front Impact:
5-Star (for 2004 model year, check specific vehicle configuration)
Active Features
ABS:
Standard Anti-lock Braking System (ABS)
Passive Features
Airbags:
Front airbags, side airbags (availability may vary by trim)
๐Ÿ’ก Technology Features
Infotainment
Audio System:
Standard AM/FM/CD player with 4 or 6 speakers. Optional premium audio system may be available.
Driver Assistance
Traction Control:
Subaru's Symmetrical AWD system provides inherent stability; traction control systems may be present depending on trim.
Connectivity
Auxiliary Input:
Not typically standard in 2004; aftermarket solutions often used.
๐Ÿ”ง Maintenance
Service Intervals
Oil Change Interval:
Typically every 3,750 miles or 6 months, whichever comes first (refer to manual for precise details based on driving conditions)
Timing Belt Replacement:
Recommended at 105,000 miles or 105 months (for models with timing belts; EJ205/EJ257 use timing belts)
Fluid Specifications
Engine Oil Viscosity:
0W-30 or 5W-30 Synthetic (refer to manual for exact specification and temperature range)
Coolant Type:
Subaru Genuine Coolant (Blue) or equivalent silicate-free long-life coolant
Transmission Fluid Manual:
Subaru Genuine Gear Oil or equivalent GL-5 rated 75W-90
Differential Fluid Front Rear:
Subaru Genuine Gear Oil or equivalent GL-5 rated 75W-90
Known Issues
Headgaskets:
While not as prevalent as earlier EJ engines, some instances of head gasket seepage can occur (though less common on 2nd gen than 1st).
Clutch Wear:
Performance driving can accelerate clutch wear.
Turbocharger Maintenance:
Regular oil changes and proper cool-down procedures are crucial for turbocharger longevity.
Oil Capacity
Engine Oil Capacity:
Approximately 4.5 US quarts (with filter) for EJ205/EJ257 (verify in manual)
๐Ÿ“š Vehicle History
Brand Heritage
Subaru Performance Focus:
Subaru is renowned for its symmetrical all-wheel-drive system and turbocharged Boxer engines, particularly in its performance-oriented models.
Model Evolution
Impreza Generations:
The 2004 model belongs to the second generation (GD/GG) of the Impreza, characterized by its more rounded styling compared to the first generation.
Production
Manufacturing Location:
Japan (Global production)
๐Ÿ† Awards & Recognition
Recognitions
Car And Driver 10Best:
The WRX was frequently praised by automotive publications for its performance value.

Delivery & file format

This is a digital PDF download, not a printed book. After payment the download link appears on your order confirmation page and is emailed to the address you entered. Files open in any PDF reader on phone, tablet or computer and can be printed.

Check the model year and engine before you buy

Manufacturers change procedures, wiring and part numbers between model years and engine options. If your VIN plate shows a year or engine code that is not listed on the data plate above, contact us with the model, year and VIN and we will confirm coverage before you order.

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