This comprehensive service repair workshop manual provides detailed instructions and specifications for maintaining and repairing the 2004 Subaru Impreza WRX & STI. It covers a wide range of topics, including engine, transmission, suspension, brakes, electrical systems, and more. The manual is meticulously organized with clear and concise text, accompanied by high-quality diagrams and illustrations to guide you through every step of the repair process. Whether you're a seasoned mechanic or a DIY enthusiast, this manual empowers you to perform repairs with confidence and precision, ensuring your 2004 Subaru Impreza WRX & STI runs smoothly and reliably.

The 2004 Subaru Impreza WRX and STI are iconic performance cars that solidified Subaru's reputation for building rally-bred road cars. These models represent the second generation of the Impreza WRX, with the STI variant offering even more aggressive performance. The WRX was powered by a turbocharged 2.0L boxer engine, producing 227 horsepower and 217 lb-ft of torque. The STI, on the other hand, boasted a higher horsepower rating of 300 thanks to a larger turbocharger, revised engine management, and a higher redline. Both models were renowned for their all-wheel drive system, known as Symmetrical All-Wheel Drive (AWD), which provided superior traction and handling, particularly in challenging conditions.

The WRX and STI were offered with a 5-speed manual transmission, with the STI also available with a 6-speed manual option. The Impreza's chassis design was renowned for its handling prowess, featuring a MacPherson strut front suspension and a double wishbone rear setup. The WRX and STI also boasted aggressive styling, with wider fenders, a prominent rear spoiler, and a distinctive hood scoop. Both models were popular amongst enthusiasts for their performance, handling, and reliability, with the STI becoming a cult classic due to its exceptional power and motorsport heritage. The 2004 Subaru Impreza WRX and STI are a testament to Subaru's commitment to building performance cars with a focus on all-weather capability and driver engagement.