I'm new here and need some help from anyone. My mechanic is trying to order this part from the dealership, but he can only describe what it looks like. Here is pic of the part, it works with the timing belt. Appreciate any help.

http://www.dropshots.com/photos/218005/20061212/143638.jpg

You might want to send an email to St. Charles Isuzu with the photo (see the FAQ's for contact information).

shop manual list it only as a retainer

http://isuzufaq.ibctech.ca/#faq4