The BMW 3 series e21 Engine Service Repair Manual is a comprehensive guide for maintaining and repairing your vehicle. This manual provides detailed instructions and diagrams to help you perform a wide range of tasks, from routine maintenance to complex repairs. This manual covers everything from engine mechanical systems, engine electrical systems, emission control systems, fuel systems, clutch systems, manual transaxle systems, automatic transaxle systems, driveshaft and axle systems, suspension systems, steering systems, restraint systems, brake systems, body (interior and exterior), body electrical systems, heating, ventilation, and air conditioning systems, lubrication and maintenance, suspension systems, differential and driveline systems, vehicle quick references, brakes, cooling systems, audio/video systems, chimes/buzzers, electronic control modules, engine systems, heated systems, horns, ignition control systems, instrument clusters, lamps, message systems, and power systems.

The BMW 3 Series E21 is a compact executive car that marked the beginning of BMW's iconic 3 Series lineage. Produced from 1975 to 1983, the E21 was the first generation of the 3 Series, replacing the aging 1800/2002 model. It was a significant departure from its predecessor, offering a more modern and refined design, enhanced performance, and a wider range of engine options. The E21 featured a distinctive wedge-shaped body, with a long hood and short rear deck, showcasing a striking and sporty aesthetic. Its compact dimensions and nimble handling made it a popular choice among enthusiasts, particularly for its precision and responsiveness. Despite its relatively short production run, the E21 played a crucial role in establishing BMW's reputation for building dynamic and engaging compact cars.

The BMW 3 Series E21 was available with a variety of four-cylinder gasoline engines, ranging from the 1.6-liter M10 to the 2.3-liter M20. These engines were renowned for their smooth and efficient operation, delivering a spirited performance for their respective displacement. The E21 also featured a range of manual and automatic transmissions, further enhancing its versatility and driving experience. The E21's reputation for reliability and performance has made it a sought-after classic car, with a vibrant enthusiast community dedicated to preserving and restoring these iconic vehicles. An engine service repair manual for the BMW 3 Series E21 is an essential tool for any owner or enthusiast seeking to maintain or restore their vehicle. It provides comprehensive instructions and technical specifications, covering everything from routine maintenance to complex engine repairs. With its detailed diagrams, step-by-step procedures, and troubleshooting tips, the manual empowers users to confidently tackle a wide range of engine-related tasks.