This comprehensive Service Repair Manual covers the 2004 Subaru Impreza WRX STi, providing you with detailed instructions and technical specifications for all aspects of your vehicle's maintenance and repair. Dive deep into the intricacies of your Subaru with this in-depth resource. From routine servicing like oil changes and brake pad replacements, to more complex repairs involving engine components, transmission, and electrical systems, this manual equips you with the knowledge you need to confidently handle any repair job. It includes detailed diagrams, step-by-step procedures, and troubleshooting guides for a wide range of systems, including the engine, transmission, brakes, suspension, electrical systems, and more. This essential tool will empower you to perform repairs with confidence, saving you time and money, and ensuring your Subaru remains in top condition.

The 2004 Subaru Impreza WRX STi is a high-performance sports car that embodies the essence of Subaru's iconic rally heritage. This generation of the WRX STi was a significant evolution from its predecessors, featuring a more aggressive and aerodynamic design, a potent 2.5-liter turbocharged boxer engine, and advanced all-wheel-drive technology. The STi moniker signified the pinnacle of Subaru's performance lineup, offering enthusiasts a thrilling driving experience with its responsive handling, raw power, and sophisticated engineering. Underneath the hood, the STi housed a 2.5-liter horizontally opposed four-cylinder engine, equipped with a high-flow turbocharger and intercooler. This powerplant produced an impressive 300 horsepower and 300 lb-ft of torque, allowing the WRX STi to sprint from 0 to 60 mph in under 5 seconds. Coupled with the potent engine was Subaru's legendary Symmetrical All-Wheel Drive (AWD) system, designed to provide exceptional traction and stability in all conditions. The STi's AWD system included a viscous coupling center differential, which automatically distributes power to the wheels with the most grip, ensuring optimal handling and traction even on slippery surfaces. The WRX STi also benefited from a number of suspension upgrades, including a stiffer suspension, larger brakes, and unique 17-inch BBS alloy wheels wrapped in high-performance tires. The result was a car that could handle corners with remarkable precision and provide a thrilling driving experience on both the racetrack and the open road. The 2004 Subaru Impreza WRX STi was a true performance icon, offering a blend of power, handling, and technology that captivated enthusiasts around the world. Its aggressive styling, potent engine, and advanced AWD system made it a formidable force on the road, while its rally heritage ensured it was built to handle even the most challenging driving conditions.