🏷️ Basic Information Identification Make: BMW Model: 525i Years Covered: 1997-2002 Chassis Code: E39 Generation Generation Designation: Fourth Generation E39 📋 Manual Details Coverage Areas Maintenance: Yes Repair: Yes Troubleshooting: Yes Wiring Diagrams: Implied (common in factory manuals) Specifications: Yes Torque Specifications: Yes Engine Overhaul: Yes Transmission Service: Yes Suspension And Steering: Yes Brakes: Yes Electrical System: Yes Body And Chassis: Yes Page Count Estimated Pages: Hundreds (exact number not specified) Manual Type Type: Factory Service Manual / Workshop Manual Language Language: English (assumed standard for this product) Format Format: Downloadable (printable) ⚙️ Engine Specifications Primary Engine Engine Code: M52B25 Engine Type: Inline 6-cylinder Displacement: 2.5 Liters (2494 cc) Valvetrain: DOHC, 24 valves (4 valves per cylinder) Bore: 84 mm Stroke: 75 mm Performance Horsepower Us Spec: 168 hp @ 5500 rpm (approximate) Torque Us Spec: 181 lb-ft @ 3950 rpm (approximate) Fuel System Fuel Delivery: Multi-point Fuel Injection (Bosch Motronic) Fuel Type: Unleaded Gasoline (Premium recommended) 🔧 Transmission Standard Transmission Type: 5-speed Manual Optional Transmission Type: 5-speed Automatic (Steptronic) Features Drive Type: Rear-Wheel Drive (RWD) 📐 Dimensions Exterior Length: 4770 mm (187.8 in) Width: 1798 mm (70.8 in) Height: 1436 mm (56.5 in) Wheelbase: 2830 mm (111.4 in) Weights Curb Weight Manual: 1585 kg (3494 lbs) (approximate) Curb Weight Automatic: 1610 kg (3550 lbs) (approximate) Gross Vehicle Weight Rating: 2070 kg (4564 lbs) (approximate) 🛡️ Safety Features Ratings NHTSA Driver Front Impact: 4 Stars (1999 model year) NHTSA Passenger Front Impact: 4 Stars (1999 model year) Features Airbags: Driver and front passenger airbags ABS: Standard Anti-lock Braking System (ABS) Traction Control: Standard Automatic Stability Control (ASC+T) Seatbelts: Three-point seatbelts with pretensioners 🔧 Maintenance Service Intervals Oil Change Interval: Variable (based on Condition Based Service - CBS) - typically 10,000-15,000 miles Air Filter Replacement: As needed, recommended every 30,000 miles Spark Plug Replacement: Approx. 100,000 miles (for iridium plugs) Fluid Specifications Engine Oil Type: Synthetic SAE 5W-30 or 5W-40 (BMW Longlife-01 approved) Coolant Type: BMW Blue Antifreeze/Coolant (G48) Brake Fluid Type: DOT 4 Transmission Fluid Manual: SAE 75W-90 Synthetic Gear Oil Transmission Fluid Automatic: BMW ATF LT-3 (or equivalent)