I couldnt find a part number either but here's a ebay listing for the full set, they might have some open packages that they can just sell you those 3 you need, give them a shout
http://cgi.ebay.com/ebaymotors/Green-Honda...13124QQtcZphoto
http://cgi.ebay.com/ebaymotors/Green-Honda...13124QQtcZphoto