The BMW N54 engine is a 3.0L twin-turbocharged inline-six known for exceptional tuning capability and robust factory engineering. Featuring forged internals, direct injection, and parallel turbos, it delivers impressive power and long-term durability. Ideal for performance builds, replacements, or upgrades, the N54 engine consistently supports 400–450 hp on stock equipment. Buyers value its smooth powerband, instant throttle response, and strong aftermarket support. Whether you’re restoring a BMW 135i, 335i, 535i, or 1M, this engine provides unmatched performance potential and reliability when maintained properly. A perfect choice for enthusiasts seeking proven turbocharged strength.