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BMW N42

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BMW N42

The BMW N42 is a DOHC four-cylinder petrol engine which replaced the BMW M43 and was produced from 2001-2004.

The N42 serves as the basis for the smaller N40 engine (which does not have Valvetronic).

The N42B18 won the 1.4-1.8 L category of the International Engine of the Year awards for 2001.

In 2004, the N42 was replaced by the BMW N46 four-cylinder engine.

Compared with its M43 predecessor, the N42 features a DOHC valvetrain, VANOS (variable valve timing) and an aluminium engine block. It was the first BMW engine to have Valvetronic (variable valve lift).

The N42B18 has a displacement of 1,796 cc (109.6 cu in), uses Bosch Motronic ME9.2 engine management and has twin-balancing shafts.[citation needed]

Applications:

The N42B20 has a displacement of 1,995 cc (121.7 cu in), uses Bosch DME ME9.2 fuel injection and has twin-balancing shafts.[citation needed] The N42B20 redlines at 6,600 rpm.

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