Hello.. just wanted to add some thoughts to your problem. That lower shield, if we are talking about the one that covers the bottom of your engine. Well, that shield is a good thing to have. I understand your dealer wants alot of $$ for it, we have it for alot cheaper on our website. Here is the link: http://www.buyourmazdaparts.com/inde...t_detail&p=555
This shield is designed to let proper air flow go through our Maz 3. Plus protects vital engine components from debris and water. If this shield is missing, Im sure you are getting a flapping noise around 50-60 mph when the two side shields start flapping, they are directly supported by the lower shield. I hope this helps.
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