This manual covers the Chrysler 300C STR-8 models from the 2005 and 2006 production years. Built on the LX platform, the 300C STR-8 is distinguished by its powerful HEMI V8 engine, delivering approximately 340-350 horsepower and 390-395 lb-ft of torque. This rear-wheel-drive sedan is noted for its distinctive retro-modern styling and offers a comfortable ride with available premium features. Its robust engineering and substantial curb weight contribute to its commanding presence on the road, making it a notable example of American automotive design from its era. This comprehensive workshop repair service manual provides in-depth information for all models, engines, trim levels, and transmission types of the 2005-2006 Chrysler 300C STR-8. It serves as an indispensable resource for both DIY enthusiasts and professional automotive technicians, offering factory-level diagnostics, maintenance procedures, and detailed step-by-step repair instructions for every major system, including the engine, transmission, brakes, electrical system, suspension, and HVAC. The manual is presented in English and includes crucial elements like wiring diagrams and troubleshooting guides, ensuring accurate and efficient vehicle upkeep and repair.