Here's a site that you can see some exploded views of the MDX to check part numbers. It may be helpful if you are looking for a particular part. Found this site by exploring our sister sites (TL/CL forums). They also sell parts but I believe Tim's is cheaper and I can't say anything about there service. NO affiliation.
http://www.acuraautomotiveparts.net...X&catcgry2=2001&catcgry3=&catcgry4=&catcgry5=
http://www.acuraautomotiveparts.net...X&catcgry2=2001&catcgry3=&catcgry4=&catcgry5=