🔧 BMW S54 3.2L DOHC I6
The BMW S54 is the naturally aspirated high-performance evolution of the M54 engine. Producing 343 hp at 7,900 rpm from 3,246cc, it was used in the E46 M3, Z3 M Roadster/Coupe, and Z4 M Roadster/Coupe. Its individual throttle bodies, flat-plane crankshaft-like balance, and high-revving character made it arguably the finest six-cylinder engine ever put in a road car.
Engine
Technical Specifications
| Type | DOHC inline-6 NA |
|---|---|
| Displacement | 3,246 cc |
| Bore_stroke | 87 × 91 mm |
| Compression | 11.5:1 |
| Horsepower | 343 hp @ 7,900 rpm |
| Torque | 370 Nm @ 4,900 rpm |
| Valvetrain | DOHC, 4 valves/cyl, variable intake cam |
| Block | Aluminium |
| Head | Aluminium |
| Redline | 8,000 rpm |
| Oil Capacity | 5.5 L |
| Weight | 178 kg (dry) |
| Msrp | $8,500–$15,000 (used/rebuilt) |