Timing Gasket Cap on 2006 Toyota Tundra

I was told by the dealership that my timing gasket cap on for my oil is seaping right now. Where would I be able to go to get a good deal because they want to charge over a thousand to fix it, most of it being labor costs. Thank you

Asked by for the 2006 Toyota Tundra
something was lost between the dealer and your post.
timing gasket cap does not exist.