The Subaru WRX, produced between 2002 and 2006, represents a significant chapter in compact performance automotive history. Known for its potent turbocharged Boxer engines, including the EJ205 and EJ255, and the signature Symmetrical All-Wheel Drive system, the WRX has consistently appealed to driving enthusiasts and rally sport aficionados. Its chassis codes, GD for sedans and GG for wagons, encompass a range of models celebrated for their dynamic handling, responsive acceleration, and rally-bred pedigree, often earning accolades such as inclusion on Car and Driver's 10Best lists. This generation of the WRX solidified Subaru's reputation for engineering vehicles that excel in both spirited driving and everyday utility.

This comprehensive Factory Service Manual provides detailed repair and maintenance information for all factory-specified systems and components of the Subaru WRX (GD/GG chassis) from 2002-2006. Covering approximately 2000+ pages across multiple sections, it offers in-depth guidance on engine mechanicals, performance tuning, transmission and drivetrain, suspension, steering, brakes, and electrical systems. The manual includes step-by-step procedures for routine maintenance, component replacement, and complex rebuilds, alongside troubleshooting charts and essential technical specifications. It serves as an indispensable resource for owners, mechanics, and technicians aiming to preserve the performance, reliability, and longevity of their WRX.