This manual covers the BMW 323i, specifically the E21 generation, produced from 1975 through 1984. As the first iteration of the iconic 3 Series, the E21 established itself as a compact executive sports sedan, celebrated for its driver-focused design, balanced chassis, and sporty handling, often compared favorably to competitors like the Mercedes-Benz W123 and Audi 80. The 323i model, typically equipped with the M20B23 inline-six engine, offered a blend of performance and practical luxury, embodying BMW's engineering prowess. This guide is essential for enthusiasts and owners dedicated to preserving the value and performance of these classic vehicles.

This comprehensive factory service and repair manual provides detailed information for maintaining and repairing the BMW 323i (E21). It covers a wide array of systems, including the M10 and M20 engines, fuel injection, transmissions, drivetrain, suspension, steering, brakes, and electrical systems. Within its extensive pages, you will find step-by-step procedures for routine maintenance, troubleshooting common issues, detailed diagnostic flowcharts, and in-depth repair instructions for all major components. This manual also includes crucial technical specifications, torque values, and fluid recommendations, making it an indispensable resource for owners and technicians alike.