What is the difference between the BMW N63 engines?

BMW N63 4.4 twin-turbo V8 engines for 550i, 750i and X5 50i. We list 2 versions: N63B44 (4.4 liter (4,395 cc), 330 kW (450 HP), 2012 to 2019); N63B44T3 (4.4 liter (4,395 cc), 390 kW (530 HP), 2018 to 2026).

The versions share the same basic design, but the power, the turbo or injection set-up, the electronics and the emission standard change. The right one for you is the one your car was built with.

The N63 family was used in chassis F10, G12, F15, G30, F06, G05, G11 and G16. The photos on each listing show the actual engine, not a stock picture. The yard checks the code, records what is bolted on, and seals the openings before the engine is offered.

Not sure? Send us your VIN and your gearbox code. We match the engine family, the year window and the parts on the engine before anything is reserved, and the check is free.