Re: {Chrysler 300} Intake manifold insulation
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Re: {Chrysler 300} Intake manifold insulation



Performance Graphics is NLA on these. They kindly referred me to :
https://www.billrolikenterprises.com/proddetail.php?prod=1879747-P
This looks like a perfect stock replacement, but I wonder how thick they are.
 
A modern alternative may be:
https://www.designengineering.com/floor-tunnel-shield-ii-adhesive-21-x-24/
Adhesive holds past 450 degrees
Only 3/16" thick for better air flow
1750 degrees heat reflective surface
Cuts 50 percent of sound transfer, and cover the entire pan
 
On 06/10/2025 8:34 AM CDT GREGORY PICHE <picgrego@xxxxxxx> wrote:
 
 
I believe the sound deadener insulation is intended to dampen internal engine noise. Certainly Chrysler would have eliminated it to save money if it didn’t accomplish something. 
Sent from my iPhone

On Jun 9, 2025, at 6:58 PM, 'Donald Verity' via Chrysler 300 Club International <chrysler-300-club-international@xxxxxxxxxxxxxxxx> wrote:

 
It's not insulation, it's sound deadening. 
Don
 
 
 
 
What are opinions on using the insulation between the intake manifold and the valley pan? 
Most seem to end up missing, like mine did with only a remnant remaining.
 
Allan

 

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