Mercedes-Benz OM 314 engine

The Mercedes-Benz OM 314 was a four-cylinder inline diesel engine that Daimler-Benz introduced in 1965 as the first four-cylinder diesel in its sales programme. Apart from the number of cylinders it was identical to the six-cylinder OM 352, which had brought direct injection to the small OM 300 series in 1964, and it was intended for the new light trucks with the cubic cab. According to the source the four-cylinder engines ran roughly but were reliable, and for the first time that also held for the turbocharged versions that followed. In 1983 the OM 314 and OM 352 were thoroughly reworked and sold as the OM 364 and OM 366, because tighter emissions law favoured fewer cylinders combined with turbocharging and charge-air cooling, and in the 1990s still stricter limits finally required an entirely new engine family, the 900 series.