BMW E46 325i Engine Specifications
The BMW E46 325i is a notable model in the BMW 3 Series lineup, produced from 1997 to 2006. It is renowned for its balance of performance, comfort, and engineering excellence. Below are the detailed engine specifications for the E46 325i.
| Specification | Details |
|---|---|
| Engine Type | Inline 6-cylinder |
| Displacement | 2.5 liters (2494 cc) |
| Power Output | 189 hp (141 kW) at 6,000 rpm |
| Torque | 184 lb-ft (250 Nm) at 3,500 rpm |
| Compression Ratio | 10.5:1 |
| Fuel System | Electronic fuel injection |
| Fuel Type | Premium unleaded (91 octane or higher) |
| Valvetrain | DOHC, 24 valves |
| Bore x Stroke | 82.0 mm x 75.0 mm |
| Engine Weight | Approximately 160 kg (352 lbs) |
Engine Configuration
The BMW E46 325i features a sophisticated inline 6-cylinder engine configuration, which is known for its smooth operation and high-revving capabilities. This engine configuration contributes to the vehicle’s overall performance and handling characteristics.
Key Features of the Engine Configuration
- Inline 6-cylinder layout for balanced weight distribution.
- Dual overhead camshaft (DOHC) design for improved airflow and performance.
- 24 valves to enhance engine efficiency and power delivery.
- High compression ratio for better fuel efficiency and power output.
Engine Oil Specifications
Proper engine oil is crucial for the longevity and performance of the BMW E46 325i’s engine. Below are the recommended engine oil specifications.
| Specification | Details |
|---|---|
| Oil Type | Synthetic oil recommended |
| Viscosity Rating | 5W-30 or 0W-40 |
| Oil Capacity (with filter) | 6.5 liters (6.9 quarts) |
| Oil Change Interval | Every 7,500 miles (12,000 km) or 1 year, whichever comes first |
Service Intervals
Regular maintenance is essential for keeping the BMW E46 325i in optimal condition. Below are the recommended service intervals for various maintenance tasks.
| Service Task | Interval |
|---|---|
| Engine Oil Change | Every 7,500 miles (12,000 km) or 1 year |
| Air Filter Replacement | Every 15,000 miles (24,000 km) |
| Fuel Filter Replacement | Every 30,000 miles (48,000 km) |
| Spark Plug Replacement | Every 60,000 miles (96,000 km) |
| Coolant Flush | Every 2 years |
| Brake Fluid Replacement | Every 2 years |
Additional Maintenance Tips
- Regularly check tire pressure and tread depth.
- Inspect brake pads and rotors for wear.
- Monitor fluid levels, including coolant and transmission fluid.
- Keep the exterior and interior clean to maintain value.
Conclusion
The BMW E46 325i stands out for its impressive engine specifications, smooth inline 6-cylinder configuration, and the importance of regular maintenance. By adhering to the recommended oil specifications and service intervals, owners can ensure that their E46 325i remains a reliable and enjoyable vehicle for years to come.
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