Advantages of removing the valve: 1. Turbo loads quicker, even if the revolutions are low. 2. The carbon deposit doesn't huddle in the intake manifold. 3 .Engine works more fluently. 4. The smoke of your engine is lower. FLANGE, EXHAUST GAS RECIRCULATION VALVE REPLACEMENT "EGR" DESIGNED FOR THE CAR ENGINES: For BMW E46 3 series diesels years 1999-2006, except 330d from 2003 For BMW E39 530d up to year 2003, 520d, 525d years 2001-2003 For BMW E38 730d, 740d up to 2002 For BMW E53 X5 3.0d up to 2003. The kit includes: Flange, replacement EGR L-100mm Flange gasket from the collector 4mm cap collector The drain plug seal (same as the picture) This item is for diesel vehicles only NOT PETROL ** IMPORTANT INFORMATION ** Please double check the item size in our photo and description, if you bought the wrong size, we'll not responsible for the mistake, please kindly be noted, thanks. Minor modifications or adjustments maybe needed for some of our products. All items are Brand New unless stated otherwise on the listing. We sell DIY (Do It Yourself) Items with a few exceptions. Professional Installer Is Highly Recommend, No Installation Instruction Included.YiPin