Inner Fender sealer/butyl?
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Cross-Country
Joined: Feb 2007
Posts: 56
Likes: 7
From: Iowa
Inner Fender sealer/butyl?
I recently pulled the front clip apart on my 64 F100 and found that there is rubber sealant between the inner fenders and the radiator support along with sealant on the bolt heads on the other side. Was this a thing from the factory? I know that I have pulled the front clip off before a couple of times, but I am relatively certain we left it assembled each time. I have taken fenders apart in other vehicles (not 60's Fords) and have never seen this. I could see it being helpful to seal the engine bay and maybe eliminating squeaking which would be nice.
If this is a thing, any suggestions on what I should use?
Thanks
If this is a thing, any suggestions on what I should use?
Thanks
Tuned
Joined: Jan 2022
Posts: 312
Likes: 136
From: Eastern Kansas
I bought several rolls of butyl tape on eBay, and put mine back together the same way, as I found it... I want to say each roll was 3/4" by 12' ....
Last edited by FarmMotorSports; Apr 30, 2026 at 05:11 PM.
Lead Gopher
Joined: Aug 2012
Posts: 10,060
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From: Seattle
Yep, for squeak reduction, at least. This is the one I bought but there are numerous brands of the stuff.
Last edited by TA455HO; Apr 30, 2026 at 06:57 PM.
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Cross-Country
Joined: Feb 2007
Posts: 56
Likes: 7
From: Iowa
Thanks. What were the other locations it was used?
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Cross-Country
Joined: Feb 2007
Posts: 56
Likes: 7
From: Iowa
Yep, for squeak reduction, at least. This is the one I bought but there are numerous brands of the stuff.
Amazon.com: XFasten Butyl Sealing Tape, Black, 1/8-In x 3/4-In x 30-Foot Plumbers Putty, RV Sealant, Boat Sealing, EDPM Butyl Tape : Industrial & Scientific
Amazon.com: XFasten Butyl Sealing Tape, Black, 1/8-In x 3/4-In x 30-Foot Plumbers Putty, RV Sealant, Boat Sealing, EDPM Butyl Tape : Industrial & Scientific
Thread Starter
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Cross-Country
Joined: Feb 2007
Posts: 56
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From: Iowa
Interesting, it looks to be the same on my 64. Thanks again.
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Lead Gopher
Joined: Aug 2012
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From: Seattle
Not front clip related but they also used butyl to seal the transmission cover to the floor of those with a removable cover. Even the automatic trucks with their small cover to access the front band adjustment. I guess it also applies to the 3 speed manual with overdrive but I haven't been around one of those trucks.
Last edited by TA455HO; May 2, 2026 at 12:52 PM.
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Lead Gopher
Joined: Aug 2012
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From: Seattle
One other place at least that I've seen some butyl. The window regulators where they attach to the inner door inside. Doesn't show that in the MPC. If you want to see exactly how they did that chunk I could probably get a decent picture of it.
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