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Old 05-15-2016, 05:06 AM   #1
In The Ten Ring
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What's a good way to plug up a firewall hole?

Now that I've decided to put a newer model windshield washer pump under the hood, there isn't much need for that 3-hole grommet in the firewall. Is there a solid grommet I can shove in there? What else can I do that doesn't involve welding, rivets, or bondo? (And duct tape, let's not forget that solution!)
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Old 05-15-2016, 06:32 AM   #2
special-K
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Re: What's a good way to plug up a firewall hole?

Old sock or rag? Many trucks I've bought have had that method implemented

Measure the diameter and maybe there is a rubber plug made in that size
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Old 05-15-2016, 09:06 AM   #3
Andy4639
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Wink Re: What's a good way to plug up a firewall hole?

Don't be to fast in plugging that hole yet!
Depending on what pump and where you mount it you need to run wires and tubing through the fire wall. Later time you may need more stuff ran through the fire wall. Those little holes want hurt you much if left open for a while and see!
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Old 05-15-2016, 10:10 AM   #4
firedemon
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Re: What's a good way to plug up a firewall hole?

pull the hoses out and a little black rtv silicone in the three little holes will make a solid plug that can be reversed if you decide to go stock again down the road
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Old 05-15-2016, 08:28 PM   #5
683/4farm
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Re: What's a good way to plug up a firewall hole?

Dormans help products makes plugs in all sizes,if you want you can get me the exact measurment on that hole and ill get you a part number any good parts store can order for you
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Old 05-15-2016, 08:38 PM   #6
chewychevy67
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Re: What's a good way to plug up a firewall hole?

http://www.ebay.com/itm/310974431859...%3AMEBIDX%3AIT
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