BMW M54B25 Engine Specifications
The BMW M54B25 engine is a notable inline-six engine that has garnered attention for its performance and reliability. This engine is part of BMW’s M54 family, which is known for its smooth operation and robust design. Below are the detailed specifications of the M54B25 engine.
| Specification | Details |
|---|---|
| Engine Type | Inline-6 |
| Displacement | 2.5 liters (2494 cc) |
| Power Output | 192 hp (143 kW) at 6000 rpm |
| Torque | 245 Nm (181 lb-ft) at 3500 rpm |
| Bore x Stroke | 84 mm x 75 mm |
| Compression Ratio | 10.5:1 |
| Fuel System | Multi-Point Fuel Injection (MPI) |
| Valvetrain | DOHC, 24 valves |
| Engine Weight | Approximately 160 kg (352 lbs) |
| Fuel Type | Premium unleaded (RON 95) |
Engine Configuration
The M54B25 engine features a well-engineered inline-six configuration, which is known for its balance and smoothness. This engine design contributes to the overall performance and driving experience of the vehicles it powers. Key aspects of its configuration include:
- Inline-6 Layout: The inline-six configuration allows for a more balanced engine, reducing vibrations and enhancing smoothness.
- Aluminum Block and Head: The engine features an aluminum block and head, which reduces weight while maintaining strength.
- Double Overhead Camshaft (DOHC): The DOHC design allows for precise control of the intake and exhaust valves, improving performance and efficiency.
- Variable Valve Timing: The M54B25 is equipped with BMW’s VANOS system, which optimizes valve timing for better performance across different RPM ranges.
Engine Oil Specifications & Service Intervals
Proper maintenance of the M54B25 engine includes regular oil changes and using the correct engine oil. Below are the specifications and recommended service intervals for the engine oil.
Engine Oil Specifications
| Specification | Details |
|---|---|
| Oil Type | Synthetic oil |
| Viscosity | 5W-30 or 0W-40 |
| Oil Capacity (with filter) | 6.5 liters (6.9 quarts) |
| Oil Filter Part Number | BMW 11427512303 |
Service Intervals
Regular oil changes are crucial for the longevity and performance of the M54B25 engine. The following are recommended service intervals:
- Oil Change Interval: Every 7,500 miles (12,000 km) or every 12 months, whichever comes first.
- Oil Filter Replacement: Replace the oil filter with every oil change.
- Inspection: Regularly inspect oil levels and quality between changes.
Conclusion
The BMW M54B25 engine is a well-engineered powerplant that combines performance with reliability. Understanding its specifications, configuration, and maintenance requirements is essential for any owner or enthusiast. Regular maintenance, particularly concerning engine oil, will ensure that the M54B25 continues to deliver a smooth and powerful driving experience for years to come.
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