for BMW N40 N42 N43 N45 N46 1.6L 2.0L 16V Piston assembly X4

The N46B20O1 produces 110 kW (148 bhp) and 200 N·m (148 lb·ft). On models with secondary air injection, peak torque occurs at 3750 rpm instead of 3600 rpm.

application:

2004-2007 E83 X3 2.0i
2005-2008 E85 Z4 2.0i
2004-2007 E87 120i
2005-2007 E90/E91 320i

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Description

The N46B20U0 produces 105 kW (141 bhp) and 200 N·m (148 lb·ft).

2007-2008 E90 318i
N46B20U1
The N46B20U1 produces 95 kW (127 bhp) and 180 N·m (133 lb·ft).

application:

2005-2007 E87 118i
2005-2007 E90/E91 318i
N46B20U2
The N46B20U2 produces 100 kW (134 bhp) and 180 N·m (133 lb·ft). It is used to replace N43 engines in countries using high-sulfur fuels.

application:

2007-2011 E81/E87 118i
2007-2013 E90 318i