This workshop service repair manual provides comprehensive information for the 3 Series, specifically the 323 model (chassis code E21), covering production years from 1975 through 1984. As the first generation of the iconic 3 Series, the E21 established presence in the compact executive sports sedan segment, renowned for its celebrated driving dynamics, sporty handling, and classic design. The 323 variant, featuring the M20B23 inline-six engine, represented the pinnacle of performance for its era, embodying commitment to engineering excellence and driver engagement. This manual is an essential resource for enthusiasts and professionals dedicated to preserving the integrity and performance of this classic automobile.

This extensive 910-page English-language manual details all major systems of the 323 E21. It covers engine mechanicals, transmission overhaul, brake systems, suspension and steering, electrical components, and body and chassis. Included are detailed maintenance procedures, step-by-step repair instructions, and troubleshooting guides for common issues. Technical specifications, fluid requirements, and diagnostic procedures are thoroughly explained, ensuring that owners, mechanics, and technicians have the necessary knowledge to perform routine servicing, complex repairs, and accurate diagnostics, thereby maintaining the vehicle's optimal condition and longevity.