What's this?

[saburai]

What's this little rubber dohicky on the firewall? Is it a drain?

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[Clb]

Need more input...
Where about?
Looks like an isolator from this side.
Thinking ofher side is a big pad.

 

[riotwarrior]

Juzt a retainer plug holds the inner insulation panel in place

 

[pelky350]

Your fire wall is really clean!

 

[saburai]

Your fire wall is really clean!

Well it had the stock insulation on it until I took it off and wiped it down with mineral spirits!

Juzt a retainer plug holds the inner insulation panel in place

Thanks! So there's no problem covering over it with the new firewall material?

 

[Thewespaul]

Id keep that insulation, it makes a big difference in heat/noise in the cab

 

[saburai]

Id keep that insulation, it makes a big difference in heat/noise in the cab

I'm replacing it with this:
https://www.amazon.com/DEI-050502-F..._desktop?_encoding=UTF8&psc=1&ref=yo_pop_d_pd

 

[HS108]

That looks like some good stuff