🏷️ Basic Information Identification Make: BMW Model: 3-Series Chassis Code: E21 Generation: First Generation Production Years: 1975-1983 📋 Manual Details Coverage Areas Repair And Service: All minor and major repairs, maintenance Electrical Systems: Wiring schematics, electrical diagrams Diagnostics: Computer diagnostic codes Suspension And Steering: Full coverage Brakes: Full coverage Air Conditioning: Full coverage Engine And Transmission: Service and rebuilding Body Work: Full coverage Air Bags: Full coverage Manual Type Unknown: Dealership and Auto Shop Level Language Unknown: English Format Unknown: Searchable content Usability Unknown: No specific computer requirements Illustrations Unknown: Detailed Instructions Unknown: Step-by-step Support Unknown: Full product support provided Customer Satisfaction Unknown: Strives for 100% ⚙️ Engine Specifications Primary Engine Unknown: Inline-4, Inline-6 Engine Codes Unknown: M10, M20 series Displacement Unknown: 1.8L, 2.0L, 2.3L, 2.5L, 2.7L (approximate variations) Fuel System Unknown: Carburetor, Bosch L-Jetronic Fuel Injection (depending on model/year) Ignition System Unknown: Distributor-based Cooling System Unknown: Water-cooled 🔧 Transmission Standard Unknown: 4-speed Manual Optional Unknown: 3-speed Automatic, 5-speed Manual Drive Type Unknown: Rear-wheel drive (RWD) 📐 Dimensions Body Styles Unknown: 2-door sedan, 4-door sedan Wheelbase Unknown: Approx. 2624 mm (103.3 inches) Length Unknown: Approx. 4360 mm (171.7 inches) Width Unknown: Approx. 1625 mm (64.0 inches) Height Unknown: Approx. 1380 mm (54.3 inches) 🛡️ Safety Features Features Unknown: Seat belts, crumple zones, padded dashboard Ratings Unknown: Not applicable to modern standards, designed with 1970s/80s safety considerations. Restraints Unknown: Three-point seat belts (front), lap belts (rear, typically) 🔧 Maintenance Service Intervals Unknown: Oil changes, filter replacements, tune-ups (detailed in manual) Fluid Specifications Unknown: Engine oil, coolant, brake fluid, transmission fluid, differential fluid (specific grades provided in manual) Lubrication Unknown: Chassis lubrication points (detailed in manual) Timing Unknown: Timing belt/chain inspection and replacement procedures (depending on engine)