is this the part i need?

http://www.autopartswarehouse.com/d...apwcid=P1135867996W43b3f85c7ab9e&apwid7SM9uk1

couple months ago i busted part of my turn signal switch. they still work, but my right singal wont lock. i have to hold it to keep the signal on. left is fine. it appears i physically broke the plastic. so is the part in the link the correct piece?