Inner fenderwell rust

[Buicknut]

So I have minimal rust on my K5 except here in the wheel well. And it is mostly confined to these triangular pieces. What are they for and do they make a replacement or patch for them.

 

[nvrenuf]

That’s a double layer reinforcement for that bolt. It’s not serviceable so you’ll have to buy a replacement fender liner or fab a piece and weld in on.

 

[Mango]

I had the same issue, Removed all the rusty metal, Used some thick sheet metal and fab to fit, Silconed the back, Installed with rivetts and self taping screws,

Sprayed it with Flex Seal severial coats, SO far all good, my Burb is not pretty just a valley ride Cheap and easy. For a better solution new fender liners

 

[Radiohead]

Some call that the sacrificial anode....