Description:<br>     Outlet Size: 2"<br>     Primary Tube Size: 1.75"<br>     Number of O2 Sensor Locations: 4<br>     Head Flange Thickness: 7/16"<br>     Outlet Flange Thickness: 3/8"<br>     Header features 6-2-1 light weight piping design.<br>     Fit for both the 2.5L, 2.8L and 3.0L L6 Engine<br>     Fit for LHD Models ONLY, Will not fit International RHD models as it hits the steering column.<br>     No instructions included, Professional installation is highly recommended<br> <br> Package including:<br>     1 x Set of Header Exhaust System<br>     Gasket(s) as shown in the Picture Show<br> <br> Fit for:<br> For BMW E46 (325/330) 1998-2006 (2006 coupe only) NO 323/328, Too Long(except 2001 BMW 325i,2006 BMW 325i Base Sedan 4-Door, 2003 For BMW 330Ci Base Coupe 2-Door 3.0L, 2004 BMW 325i Base Wagon 4-Door 2.5L)<br> For BMW E39 5 Series 2001-2003  2.5L/2.8L/3.0L Engines<br>     (except 2001 BMW 330Ci,2002 BMW 325Ci,2002 BMW 330Ci)<br> BMW E85 Z4 2002-2005 2.5L/2.8L/3.0L Engines<br>