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BMW

BMW 320 323i 3 Series E21 1975-1983 Workshop Manual

BMW 320 323i 3 Series E21 1975-1983 Workshop Manual

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Vehicle data plateRef 570932
Brand
BMW
Vehicle
Cars
Models covered
3 Series, 3 Series E21, 320, 323i
Years
1975, 1976, 1977, 1978, 1979, 1980, 1981, 1982, 1983
Format
PDF, searchable, print-ready
Delivery
Instant download after checkout
Language
English

What happens after you pay

  • Download link opens on the order page immediately
  • The same link is emailed to you — re-download any time
  • Open on phone, tablet or PC; print only the pages you need
  • Not sure it covers your model year? Ask us before you buy
🏷️ Basic Information
Identification
Make:
BMW
Model:
3 Series
Specific Models Covered:
320, 320i, 323i
Body Styles Covered:
Sedan, Coupe, Convertible
Generation
Chassis Code:
E21
Production Years
Start Year:
1975
End Year:
1983
👋 Introduction
Market Position
Positioning:
Premium compact sports sedan and coupe
Competitive Analysis
Competitors:
Mercedes-Benz W123, Audi 80, Alfa Romeo Alfetta
Key Features
Design Philosophy:
Driver-focused, sporty handling, build quality
Target Audience:
Enthusiasts seeking performance and luxury in a compact package
📋 Manual Details
Coverage Areas
Primary Coverage:
Factory Service Manual
Secondary Coverage:
Parts Catalogue
Page Count
Total Pages:
700+
Manual Type
Type:
Workshop Manual
Language
Language:
English
Format
Format:
PDF
📖 Manual Coverage
Systems Covered
Engine:
Comprehensive engine repair and overhaul
Transmission:
Manual and automatic transmission service
Suspension:
Front and rear suspension diagnosis and repair
Steering:
Steering system components and alignment
Brakes:
Brake system service, including hydraulics and components
Body:
Body panel repair, chassis alignment, and corrosion prevention
Body Equipment:
Interior trim, seating, glass, and weatherstripping
Electrical System:
Full electrical system diagnosis and repair
Equipment And Accessories:
HVAC, infotainment, and optional equipment servicing
Wiring Diagrams:
Detailed wiring schematics for all systems
Procedures Included
Maintenance:
Routine service, fluid changes, filter replacements
Repair:
Component replacement, adjustment, and rebuilding
Troubleshooting:
Diagnostic procedures for common and uncommon faults
Diagnostics:
System testing and fault identification methods
Technical Depth
Depth:
Comprehensive factory-level repair information
📊 Manual Specifications
File Format
File Type:
PDF
Searchability:
Searchable text content
Printability:
Printable pages
Print Quality
Quality:
High-resolution scans
Binding Type
Binding:
N/A (Digital Format)
Paper Type
Paper:
N/A (Digital Format)
⚙️ Engine Specifications
Primary Engine
Engine Code 320:
M10
Engine Type 320:
Inline-4 Cylinder
Displacement 320:
1.99 liters (1990 cc)
Fuel System 320:
Carbureted (Solex 40 PDSIT) for 320, Bosch L-Jetronic Fuel Injection for 320i
Engine Code 323
Engine Code 323:
M20
Engine Type 323
Engine Type 323:
Inline-6 Cylinder
Displacement 323
Displacement 323:
2.3 liters (2316 cc)
Fuel System 323
Fuel System 323:
Bosch K-Jetronic Fuel Injection
Performance
Horsepower 320I:
125 hp (93 kW) @ 5800 rpm (approx.)
Torque 320I:
170 Nm (125 lb-ft) @ 3500 rpm (approx.)
Horsepower 323I:
143 hp (107 kW) @ 5800 rpm (approx.)
Torque 323I:
190 Nm (140 lb-ft) @ 4000 rpm (approx.)
🔧 Transmission
Standard
Transmission 320:
4-speed manual
Transmission 323:
4-speed manual
Optional
Transmission Optional 320:
3-speed automatic (ZF 3HP18)
Transmission Optional 323:
4-speed manual (Getrag 245) or 3-speed automatic
Features
Clutch Type:
Single dry plate, hydraulically actuated
📐 Dimensions
Exterior
Wheelbase:
2563 mm (100.9 in)
Length Sedan:
4360 mm (171.7 in)
Width:
1625 mm (64.0 in)
Height:
1380 mm (54.3 in)
Weights
Curb Weight 320I:
Approx. 1160 kg (2557 lbs)
Curb Weight 323I:
Approx. 1210 kg (2668 lbs)
🛡️ Safety Features
Ratings
Crash Safety:
N/A (No formal crash test data from the era in modern format)
Active Features
Brakes:
Front: Ventilated discs; Rear: Drums
Steering System:
Recirculating ball steering, optional power steering
Passive Features
Seatbelts:
Standard front seatbelts, optional rear
Rollover Protection:
Reinforced A-pillars, integral roll bar for convertible
💡 Technology Features
Infotainment
Radio:
Optional AM/FM radio, often Blaupunkt
Speakers:
Limited speaker configurations, often front only
Driver Assistance
ABS:
Not available on most E21 models, optional on later 323i
Cruise Control:
Rare optional feature
Connectivity
Connectivity Features:
None (pre-digital era)
🔧 Maintenance
Service Intervals
Oil Change Interval:
Every 5,000-7,500 miles (or as per manual recommendations, typically 7,500 miles for modern use)
Tune Up Interval:
As needed, typically every 20,000-30,000 miles for spark plugs and filter replacements
Fluid Specifications
Engine Oil 320:
API SG or higher, SAE 20W-50 or 15W-40 (consult manual for exact viscosity based on climate)
Engine Oil 323:
API SG or higher, SAE 20W-50 or 15W-40 (consult manual for exact viscosity based on climate)
Coolant:
50/50 mix of ethylene glycol antifreeze and distilled water
Brake Fluid:
DOT 3 or DOT 4
Transmission Fluid Manual:
GL-4 gear oil (e.g., SAE 75W-90)
Transmission Fluid Automatic:
Dexron III (or equivalent)
Known Issues
Rust Prone Areas:
Wheel arches, rocker panels, front strut towers, rear valence
Fuel System Issues:
Deterioration of fuel lines, issues with early fuel injection systems (320i/323i)
Electrical Gremlins:
Aging wiring harnesses, corrosion in connectors
Cooling System:
Radiator leaks, hose degradation, thermostat issues
Engine Wear M10:
Timing chain stretch and guides (if not replaced), oil leaks
Engine Wear M20:
Head gasket issues, oil pan seal leaks, timing belt (later M20s, but E21 M20 is chain driven)
Filter Part Numbers
Oil Filter Example:
Mann-Filter W 920/17, Mahle OC 104 (check specific engine)
Air Filter Example:
Mann-Filter C 32 133, Mahle LX 75 (check specific engine)
📚 Vehicle History
Brand Heritage
Bmw Legacy:
Known for sporting sedans and efficient engineering
Model Evolution
E21 Significance:
First generation 3 Series, established BMW's reputation in the compact executive segment
Design Influence:
Paul Bracq design, distinctive shark nose front end
Production
Production Location:
Munich, Germany and Rosslyn, South Africa
Total Production Units:
Over 1.3 million units
🏆 Awards & Recognition
Recognitions
Automotive Press:
Consistently praised for driving dynamics and build quality by automotive journalists of the era
Ratings
Sales Success:
Significant sales success contributing to BMW's global growth

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