BMW N43

The BMW N43 was a naturally aspirated four-cylinder petrol engine sold from 2006 to 2013 that replaced both the N46 and the N45. It was not sold in countries with high-sulfur fuel, so the N45 and N46 stayed in production beside it. Compared with the N46 it adds direct injection. As part of BMW shift to turbocharging, the turbocharged N13 replaced it in 2011, and it suffered problems in service with broken plastic cam chain guides that starved the engine of oil, and with the injectors, coil packs and NOx sensor. The 1,599 cc N43B16 gave 90 kW and 160 newton metres and, like the N45, had no Valvetronic, and the 1,995 cc N43B20 gave up to 125 kW and 210 newton metres. It powered the E87 116i, the E90 316i and 318i, and the E87 118i and 120i.