OEM 2015–2020 BMW M2 / M3 / M4 S55 Engine Long Block Assembly

Genuine BMW S55B30 3.0-liter twin-turbo inline-6 long block assembly from the F87 M2, F80 M3, and F82/F83 M4 (2015–2020), showing approximately 67,000 miles.

This high-performance twin-turbocharged DOHC 24-valve six-cylinder is the heart of the modern M division. Known for its explosive power delivery, strong mid-range torque, and refined character, the S55 remains one of the most capable and tunable engines in recent BMW history.

Key specifications

• Engine code: S55B30
• Displacement: 3.0 L twin-turbo inline-6
• Configuration: DOHC, 24-valve with Valvetronic and Double-VANOS
• Power: approximately 365–444 hp depending on model and tune (stock M2 Competition / M3 / M4 figures)
• Condition: Approximately 67,000 miles
• Includes: Long block assembly (verify exact components included)

Ideal as a complete long-block replacement or a foundation for a high-quality rebuild, swap, or performance build. The S55 delivers the authentic modern M performance experience.

Fitment
2015–2020 BMW

• F87 M2 / M2 Competition
• F80 M3
• F82 / F83 M4

(Verify exact year, model, accessories such as turbos, intake, exhaust manifolds, sensors, and wiring for your specific application.)

Perfect for owners seeking a genuine lower-mileage OEM S55 long block to restore or upgrade an F8x M car.