Where can I get the front sidemarker O-ring.
 

My sidemarkers have been filling with water whenever it rains, I'm buying new ones, along with applying a silicone on them. But I also want to replace the o-rings. Subaru nor Toyota sells the o-ring and I haven't been able to find them at a few parts stores. It's a flat small o-ring, saw one like it before. Can anyone help me out? Thanks!

That's odd Toyota or Subaru won't have simple o rings.

What I'll do is take the o ring to any auto parts and find one that fits from their box of o rings.

Yeah they don't have a part number listed for the o-ring. They say I have to buy the whole socket. I actually went to pep boys to match it up but no luck. This o-ring is more like a rubber washer, it's flat. Thanks for the help though looking forward to whatever you find