360 engine bay coating touch-up

I have a few spots in the engine bay area where the textured black undercoating has peeled and am looking to touch it up. Anyone have product recommendations that provide a rough match and can withstand the heat? Needs to be brush on too. Maybe POR 15 High Heat?

 

Hmm. I actually have some of that on the shelf but scared to use it. I just did some spray paint touch up on my Landcruiser offroad bumper and ended up with a lot of overspray to clay off its paint. Not keen on masking the car off but it does seem most of the options are in a spray can.