This comprehensive Subaru Impreza 2004 (gasoline) WRX STI Service Repair Manual provides detailed information and instructions for maintaining and repairing your vehicle. It features clear and concise text, accompanied by high-quality diagrams and illustrations, to guide you through every step of the process. The manual covers all aspects of your Subaru Impreza WRX STI, from basic maintenance procedures like oil changes and tire rotations to more complex repairs involving engine, transmission, suspension, and electrical systems. You'll find detailed specifications, troubleshooting tips, and wiring diagrams to assist you in diagnosing and resolving any issues. Whether you're a seasoned mechanic or a DIY enthusiast, this manual is an invaluable resource for ensuring your Subaru Impreza WRX STI remains in top condition.

The 2004 Subaru Impreza WRX STI is a high-performance sports sedan that embodies Subaru's dedication to rally-bred engineering and driving excitement. This generation of the Impreza WRX STI, launched in 2002, marked a significant evolution in the model's lineage, boasting a newly designed platform with a wider track and a longer wheelbase, resulting in enhanced handling and stability. Under the hood resided a potent 2.5-liter turbocharged boxer four-cylinder engine, delivering 300 horsepower and 300 lb-ft of torque—a substantial power increase compared to its predecessor. This engine was paired with a close-ratio six-speed manual transmission, channeling power to all four wheels via Subaru's renowned Symmetrical All-Wheel Drive system. The WRX STI's aggressive styling, featuring a prominent rear spoiler and wide bodywork, further emphasized its performance-oriented nature, while the distinctive "WRX STI" badging highlighted its status as a top-tier model within the Subaru lineup. The 2004 Impreza WRX STI's performance and handling prowess were unmatched in its segment, setting a benchmark for sports sedans. The car's sophisticated suspension system, incorporating MacPherson struts in the front and a double wishbone setup in the rear, provided exceptional grip and responsiveness. The WRX STI was also lauded for its exceptional braking performance, thanks to its large ventilated disc brakes at all four corners. Inside, the cabin was driver-focused, featuring sport seats with excellent support, a leather-wrapped steering wheel, and a comprehensive instrument cluster that displayed crucial performance data. The 2004 Impreza WRX STI offered a compelling combination of performance, practicality, and affordability, solidifying its position as a true legend in the automotive world.