N42. (Details coming soon)

The BMW N42 was an inline four-cylinder petrol engine that was available from 2001 to 2004. The N42 replaced BMW's M43 engine and won the International Engine of the Year Award in 2001. The N42 engine had an aluminium alloy block and cylinder head, two gear-driven balance shafts, double overhead camshafts (chain-driven), variable intake and exhaust valve timing (BMW’s double VANOS), four valves per cylinder, variable intake valve lift (BMW’s Valvetronic), Bosch Motronic ME 9.2 engine management and a maximum engine speed of 6500rpm.

The N42 engine was also fitted with a variable intake manifold (BMW’s Differentiated Intake System, or DISA) which enabled intake pipe length to be adjusted according to engine speed for more efficient cylinder filling and scavenging