Which size do I need 22mm or 33mm?
Our Swirl Flap blanks are available in 22mm and 33mm size (some refer to 33mm as 32mm they are the same thing). Unfortunately it is difficult to determine which size swirl flaps your vehicle has fitted and as such which size blanks you require. As a rule of thumb but far from guaranteed 22mm tend to be fitted on vehicles up to 2004, 2004-2006 either size can be fitted and 2006 on 33mm size. However over the years many exceptions have been found and BMW do not hold data as to which are fitted to your vehicle. We therefore advise measuring the swirl flaps in your manifold or ordering a set of both size and returning the unused set for refund, this is what most of our customers choose.
BMW engine codes and models:
E46 320d 2001-2005, E83 X3 2.0d (up to end of 2006)
M47TU2D20 updated in 2004 to M47TU2D20
E60/E61 520d, E87 120d, E90/E91 320d, E83 X3 2.0d - end of 2006 onwards
Previous M57 - 2000 onwards M57D25
2000-2003 E39 525d automatic transmission only.
M57N/M57TU - 2004 onwards M57TUD25
M57/M57D29 - 1998 onwards M57D30
E39 530d automatic transmission only
E46 330d/330xd automatic transmission only
E38 730d automatic transmission only
E53 X5 3.0d, E38 730d, E39 530d
M57N/M57TU - 2002 onwards M57TUD30
E83 X3 3.0d
E53 X5 3.0d
M57TU2D30 M57TU2D30 - 2007 onwards, facelifted E60 and E61
M57TU2D30-UL M57TU2D30-OL M57TU2D30-TOP
E60/E61 525d/525xd E65 730d
E70 X5 3.0sd
E71 X6 xDrive35d
E83 X3 3.0sd
Still unsure? Visit www.realoem.com enter your vehicle details and click browse parts, click engine, scroll down to intake manifold and click on this link this will show the manifold on your vehicle. If the manifold has swirl flaps fitted it will state "Intake manifold with flap control". If this is not listed in the parts list the manifold does not have swirl flaps fitted.