of the N52 have a bore of , a stroke of and a compression ratio of 10.7:1. Variations in power output are often due to different intake manifolds and variations of engine management software. Applications: 2006-2007 E90/E92/E93 325i, 325xi — U.S. and Canada only 2006-2007 E60/E61 525i, 525xi — U.S. and Canada only 2006-2008 E85 Z4 3.0i — U.S. and Canada only 2008-2011 E82/E88 125i 2008-2010 E60/E61 528i, 528xi — U.S. and Canada only 2009-2010 E84 X1 xDrive25i Applications: 2007-2013 E90/E91/E92/E93 328i, 328xi — U.S. and Canada only 2008-2013 E82/E88 128i — U.S. and Canada only Applications: 2010-2011 F10 528i Applications: 2004-2007 E63/E64 630i 2005-2007 E90/E92/E93 330i, 330xi 2005-2008 E65/E66 730i 2005-2009 E60/E61 530i, 530xi 2009-2015 F01 730i 2008-2011 E89 Z4 sDrive30i 2009-2011 E84 X1 xDrive28i 2009-2012 E87 130i 2010-2011 F25 X3 28i Applications: 2005-2008 E85/E86 Z4 3.0si 2006-2009 E87 130i Applications: 2006–2010 E83 X3 3.0si 2006-2010 E70 X5 3.0si, xDrive30i 2007-2010 E63/E64 630i 2007-2013 E90/E92/E93 330i, 330xi N51B30 The N51 engine is a SULEV version of the N52 that was sold in parts of the United States that had SULEV legislation. Differences to the N52 versions include a variable-length intake manifold ("DISA") with three stages instead of one, and a compression ratio lowered from 10.7:1 to 10.0:1. Recalls In 2017, BMW recalled 740,000 six-cylinder models due to reports of the heater for the crankcase ventilation valve short-circuiting and causing a fire. See also BMW List of BMW engines References N52 Straight-six engines Gasoline engines by model