Gaps between firewall and roll cage

[Stu Seitz]

I have a roll cage that extends through my firewall and attaches to my front subframe. What is the best way to fill, cover, etc. the small gaps between the tubing and firewall? Two pieces of aluminum riveted around the tubing? I'd rather not use body filler or some type of grommet.

[raustinss]

Interior side either silicone or seam sealer to prevent exhaust gases from coming in , engine side yes id say some sort of cover like you mentioned

[slimjim]

https://watsons-streetworks.com/product/steering-column-trim-lightning-roll-cage-pass-through/

Someone also makes a nicer billet one but I can remember who right now