Pre cat oxygen sensor / Located before the catalyst.Select O2 sensor location from the menu. Made By IDO manifold
X5 3.0si 2007-2008 \/ Before Cat Front Manifold,X5 3.0si 2007-2008 \/ Before Cat Rear Manifold,X5 xDrive30i 2009-2010 \/ Before Cat Front Manifold,X5 xDrive30i 2009-2010 \/ Before Cat Rear Manifold
