Buy BMW S55 Engines Online

The BMW S55 is a high-performance 3.0L twin-turbo inline-6 engine designed for the F80 M3 and F82 M4. Known for its exceptional power, responsiveness, and tuning potential, the S55 is a favorite among BMW enthusiasts and track-day drivers.

Whether you need a replacement engine for your M3/M4 or a performance upgrade for a project car, our tested, low-mileage S55 engines deliver unmatched reliability and power.

BMW S55 Engine Specifications

Engine Code: S55B30
Configuration: 3.0L Twin-Turbo Inline-6
Horsepower: 425 HP (stock) – Up to 700+ HP (tuned)
Torque: 406 lb-ft
Redline: 7,600 RPM
Compression Ratio: 10.2:1
Turbochargers: Twin MonoScroll Turbos (efficient spooling)
Fuel Injection: Direct Injection (Bosch HDEV 5)
Block Material: Closed-deck aluminum (reinforced for high boost)
Valvetrain: DOHC, VANOS & Valvetronic
Applications:
- F80 BMW M3 (2015-2018)
- F82/F83 BMW M4 (2015-2020)

Key Features of the BMW S55 Engine

✔ Twin-Turbocharged for Instant Power – Minimal lag, maximum response.
✔ Forged Crankshaft & Connecting Rods – Built for high RPM and big power.
✔ Advanced Cooling System – Additional radiators & oil coolers for track use.
✔ Tuning Potential – Easily reaches 500-700+ HP with bolt-ons and ECU tuning.
✔ Reliable & Durable – Stronger than the N55, designed for M Division performance.

Available S55 Engine Conditions

Low-Mileage Used Engines (30k-60k miles, compression tested)
Remanufactured S55 Engines (Fully rebuilt to OEM specs)
Complete Engine Packages (Includes turbos, wiring, ECU if needed)

Why Buy From Us?

Thoroughly Inspected – Compression tested, leak-down checked, no hidden issues.
Warranty Options – 12-month warranty available for peace of mind.
Fast Shipping – Ready to ship across the US.
Expert Support – Help with compatibility, tuning, and installation.