This comprehensive service repair manual provides detailed instructions and diagrams for every aspect of maintaining and repairing your 2004 Subaru Impreza WRX STI. From routine maintenance like oil changes and brake pad replacements to complex engine and transmission repairs, this manual equips you with the knowledge and guidance you need to keep your vehicle running smoothly. The manual covers everything from basic troubleshooting to advanced diagnostics, including detailed wiring diagrams, component specifications, and step-by-step procedures. With clear illustrations and concise descriptions, this manual serves as an invaluable resource for both professional mechanics and DIY enthusiasts.

The 2004 Subaru Impreza WRX STI is a high-performance sports sedan that embodies the legendary legacy of the Impreza WRX line. This model, particularly the STI variant, caters to enthusiasts seeking a blend of raw power, exceptional handling, and all-weather capability. Under the hood lies a 2.5-liter turbocharged boxer engine, delivering an impressive 300 horsepower and 300 lb-ft of torque. This potent engine is mated to a robust six-speed manual transmission, providing a visceral driving experience. The STI's underpinnings are equally impressive, featuring a sophisticated all-wheel-drive system, a sport-tuned suspension with adjustable dampers, and Brembo brakes. Its aggressive styling, characterized by a prominent rear spoiler, flared wheel arches, and a sporty front fascia, accentuates its performance credentials. The 2004 Impreza WRX STI is not just about brute force; it's a meticulous blend of engineering and performance. The car's exceptional handling is a product of its low center of gravity, advanced suspension, and precise steering. The symmetrical all-wheel-drive system ensures optimal traction and stability in all conditions, making it equally adept at conquering winding mountain passes or navigating snowy roads. The interior, while functional, reflects the car's sporty nature with supportive sport seats, a three-spoke steering wheel, and a driver-focused cockpit layout. However, it's important to note that the 2004 Impreza WRX STI, while undeniably capable, is not without its quirks. The car's suspension can be firm, making it less comfortable on rough roads. Furthermore, the interior quality, though functional, might not match the luxury standards of its contemporaries. Despite these minor drawbacks, the 2004 Subaru Impreza WRX STI remains a coveted and highly sought-after model for its potent performance, distinctive character, and enduring legacy.