BMW N42

BMW N42 engine
Overview
Manufacturer	BMW
Production	2001–2004
Combustion chamber
Configuration	straight-4 DOHC
Chronology
Predecessor	BMW M43
Successor	BMW N46

The BMW N42 is a straight-4 DOHC piston engine which replaced the M43 and was produced from 2001-2004.

Compared with its M43 predecessor, the N42 features a DOHC valvetrain and variable valve timing (called VANOS by BMW). It was the first BMW engine to feature variable valve lift (called valvetronic by BMW). 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 competition for 2001.

In 2004, the N42 was replaced by the N46 engine.

The N42B18 has a displacement of 1796 cc, uses Bosch DME ME9.2 fuel injection and has twin-balancing shafts.

Applications:

The N42B20 has a displacement of 1995 cc,uses Bosch DME ME9.2 fuel injection and has twin-balancing shafts.

Applications:

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