Is it a v6 or a 4 cylinder?
How may times have you throw the egr code?

If it a v6 it has other problems read this.

http://www.tegger.com/hondafaq/tsb/accord/A99-085.pdf

If its a 4 cylinder check hear get your manual.

http://hondatech.info/downloads/Auto/Manuals/Accord/

I like to use oem parts so go to the dealer. EGR valve are one piece no additional peaces need.