
The Definitive Guide To The BMW N55 Engine - Common Faults, Tech Specs, & Upgrades
The N55B30 engine is one in a long line of BMW inline six-cylinder engines. It replaced the N54, a wildly popular engine known for its potential for big horsepower. Like its predecessor, the N55 is a turbocharged 3.0L inline-6 cylinder engine utilizing direct fuel injection. It was available in...