This comprehensive service and repair manual is specifically designed for the 2004 Subaru Impreza STI (Gasoline) and provides an in-depth look into every aspect of your vehicle. From routine maintenance procedures to detailed troubleshooting guides, this manual serves as an invaluable resource for both professional mechanics and dedicated DIY enthusiasts. It encompasses a vast array of information, including engine specifications, electrical diagrams, bodywork details, and intricate instructions for a wide range of repairs and adjustments. The manual covers everything from basic maintenance tasks, like oil changes and filter replacements, to more complex repairs involving engine components, transmission systems, and even the intricate workings of your car's electrical system. You will find detailed diagrams, step-by-step instructions, and clear explanations for every procedure, ensuring a smooth and successful repair experience. Whether you are a seasoned professional seeking to enhance your knowledge or a car owner looking to perform repairs independently, this manual provides the necessary guidance and technical insight to maintain your Subaru Impreza STI in optimal condition.

The 2004 Subaru Impreza WRX STI is a high-performance sports car that embodies the legacy of Subaru's rally heritage. It features a 2.5-liter turbocharged boxer engine known for its aggressive power delivery and signature horizontally opposed design. This engine produces a formidable 300 horsepower and 300 lb-ft of torque, allowing for spirited acceleration and a thrilling driving experience. The STI boasts a sophisticated Symmetrical All-Wheel Drive system with a viscous limited-slip center differential that maximizes traction and handling, particularly on challenging road surfaces. Beyond its impressive powertrain, the 2004 Impreza WRX STI is equipped with a sport-tuned suspension featuring Bilstein dampers and a stiffer anti-roll bar, ensuring precise handling and exceptional ride quality. Enhanced brake components with larger rotors and four-piston calipers provide confident stopping power to match the car's performance capabilities. The 2004 Impreza WRX STI's exterior design is characterized by aggressive styling cues that highlight its performance intentions. A prominent front spoiler, side skirts, and a rear diffuser provide additional downforce for improved stability at high speeds. Distinctive STI badging and 17-inch alloy wheels with performance tires further distinguish this model from its more mundane counterparts. Inside the WRX STI, the driver-focused cockpit features supportive sport seats with ample lateral support for spirited cornering. The interior is designed for functionality, with a predominantly black color scheme accentuated by contrasting silver trim. A three-spoke steering wheel with audio controls and a comprehensive gauge cluster provide the driver with essential information at a glance. The 2004 Impreza WRX STI stands as a testament to Subaru's engineering prowess, offering an exhilarating driving experience that has earned it a devoted following among enthusiasts worldwide.