This comprehensive BMW 3-series (E21) 1981 Service and Repair Manual provides detailed instructions, diagrams, illustrations, wiring schematics, and specifications to completely repair your vehicle. It covers all models and repairs, offering the same information used by technicians at dealerships.

The manual is organized for easy navigation and includes sections covering:

* **Maintenance:** Routine maintenance procedures, schedules, and tips.
* **Engine:** Detailed information on engine operation, troubleshooting, and repair, including the fuel system, emission control, and cooling system.
* **Drivetrain:** Covers the transmission, clutch, differential, axles, and suspension systems.
* **Brakes:** Repair and maintenance instructions for all braking components, including the parking brake.
* **Steering:** Details on steering column, power steering system, and related components.
* **Electrical System:** Extensive coverage of electrical system components, wiring diagrams, and troubleshooting guides, including the air conditioning, restraint systems, and audio/visual systems.
* **Body and Interior:** Guidance on repairing and maintaining the body, interior components, doors, seats, and windows.

This manual enables you to perform maintenance and repairs with confidence. You can easily access the information you need without cumbersome physical manuals.

The BMW 3-series (E21) is the first generation of the iconic BMW 3 Series, a compact executive car produced by German automaker BMW from 1975 to 1983. While the E21 generation is now considered a classic, it was originally designed to be a practical and affordable entry point into the BMW brand, offering a blend of sporty handling and everyday usability. The E21's streamlined design, penned by famed designer Paul Bracq, was a departure from the boxy, angular styling of earlier BMWs, showcasing a more modern and elegant form. It was available in a range of body styles including a two-door coupe, two-door sedan, and a four-door sedan. At its heart, the E21 featured a range of four-cylinder engines, ranging from the 1.6-liter M10 unit to the more powerful 2.0-liter and 2.3-liter options. The E21 was known for its agile handling and responsive engine performance, which made it a popular choice among enthusiasts.

While the E21 was initially intended to be a more budget-friendly offering, it quickly gained a reputation for its sporty character and high build quality. It became a successful model for BMW, contributing to the brand’s growing popularity during the 1970s and early 1980s. The introduction of the M10 engine, with its high-revving nature and characteristic "M" badge, further solidified the E21's position as a sports car. This generation also saw the introduction of several performance variants, including the 320i and the 323i, which further increased the car’s appeal among driving enthusiasts. Today, the E21 is considered a classic BMW and has become a sought-after collectible car. Its combination of timeless design, sporty handling, and historical significance continues to attract car enthusiasts and collectors worldwide.