BMW N46 320i 120i E90 2.0 Petrol Engine (N46B20)
The N46 is a BMW inline-four piston engine. It replaced the N42 engine and was produced from 2004 to 2015. It’s a naturally aspirated engine that also served as the basis for the smaller BMW N45 engine. The N46 was succeeded by the N43 in 2007.