Have you tried Cerritos Mitsubishi (if you want local)? They're right on the corner of South and Studebaker (where suzuki used to be), although I'm sure you've seen them...
Better yet, unless you want oem:
click for rock auto; < $12 if that's the right one...don't forget the discount 5% code. [Edit - link not working, so go to the main site and it's anchor #8105 and they have 2 left, so hurry]