Oval rubber plug

I am looking for a replacment for the oval rubber plug in the engine bay. Right above the left valve cover. Anybody know where we can buy them?

Above the DS valve cover?

The cowl access plug?  

Show me a picture.

ArdWrknTrk wrote

Above the DS valve cover?

The cowl access plug?  

This oval plug showed up I believe for the 1983 model year, or whenever the feedback carbs showed up. A large wiring harness passed through the firewall (also for the later 1985-1986 5.0 EFI equipped trucks). If you happen to get a truck that didn't have a feedback carb, then there was a large oval rubber plug put in this hole where the EFI/Feedback harness would normally be.

My 1984 F150 had one from the factory:



These oval plugs are really hard to find, and they're desirable for the guys that swap out a feedback carb for a regular carb with DSII ignition. If you remove this harness, you need that oval plug to fill the hole.

I used to grab them at the junkyard when I came across them, but I ended up mailing them out to guys that needed them.

Not sure what the part number is...it's surely to be a junkyard only item.

Here I was a few years ago haha...

https://forum.garysgaragemahal.com/Firewall-oval-plug-For-use-after-DSII-swap-and-feedback-carb-removal-tp103971.html

Do you have dimensions?
This doesn't exist on my Bricknose...

my truck has this also as the carb harness is now laying on my shop floor and not going back in. Ill likely be seeing if anyone wants the original harness... but you're definitely not the only one looking for a plug for that spot!! I'll be keeping an eye out for us. Hoping to go junkyard hopping one of these days soon

The one above the ds valve cover. Close to the speedometer cable.
20240302_165117.jpg

ArdWrknTrk wrote

Do you have dimensions?
This doesn't exist on my Bricknose...

Here it is in the palm of my hand lol. It's all I got...an old picture.

Have to measure the hole I guess.

It looks like you could get a caliper in the hole.

I can get a caliper on it. I will get dimensions and take a deep dive on the google machine tomorrow. Thanks

The 78 Bronco i'm working on doesn't have any of these grommets to help with adding wires or gauges. I ordered a grommet kit like the one below to add custom access points in the firewall.

https://www.amazon.com/dp/B09Z24WM5T/?coliid=I3W0MO41BDEVC3&colid=3IGQF00LDI4AO&psc=1&ref_=list_c_wl_lv_ov_lig_dp_it

I found something similar on ebay and they sell them sepratly. I am going to get my sizes in the morning.

I'll get a link tomorrow at work - I have it there.  There is a website that sells them.  I got mine from a salvage yard; some goon cut it to run wires through it, but it works fine.  Dropped one that was in tall weeds before I found that one, and I wasn't about to go crawling through that mess looking for it.