Bronco638 Posted September 9 Share Posted September 9 If you remove the cowl to clean the air plenum, there are two rubber plugs/grommets that are hidden by the cowl. They're way out by the fenders and if you remove them, you can see where any water that enters the plenum is directed out. Does anyone know if these plugs are still available? Mine are pretty stiff from being subjected to 40+ years of the southwest's heat. The driver's side plug has this number: E0TB-10020A51-AA. A Google search reveals nothing (prolly because it's a Ford Engineering Number). I would assume that the passenger side has a similar number because it's a mirror image of the driver's side. TIA. Link to comment Share on other sites More sharing options...
C.Jett Posted September 14 Share Posted September 14 Dave, they are still out there, I saw them not long ago. For the life of me, can’t remember where, keep looking. CJ Link to comment Share on other sites More sharing options...
kramttocs Posted September 14 Share Posted September 14 E0TZ-10020A50-A E0TZ-10020A51-A As you found, those are bad about getting stiff and shrinking. Link to comment Share on other sites More sharing options...
Bronco638 Posted September 16 Author Share Posted September 16 E0TZ-10020A50-A E0TZ-10020A51-A As you found, those are bad about getting stiff and shrinking. Thanks CJ Mine have gotten stiff but I can still get them to seat in the openings. They just seem to be really hard to find. Link to comment Share on other sites More sharing options...
85lebaront2 Posted September 16 Share Posted September 16 Thanks CJ Mine have gotten stiff but I can still get them to seat in the openings. They just seem to be really hard to find. I will give you and anyone else with a Bullnose a suggestion. The issue with the drains clogging is caused by leaves falling (or being blown) through the cowl grille slots, Ford changed this in 1987 by going to one that has lots of little holes. On a Bullnose, a piece of screen, preferably plastic, cut to fit, will keep the leaves out, but still let plenty of air in. I can't claim credit for this idea, I saw it on a Chevy 1 ton van while I had the front and part of the engie disassembled. Link to comment Share on other sites More sharing options...
Jermd21 Posted Friday at 12:04 PM Share Posted Friday at 12:04 PM I’m also looking for one of these plugs (drivers side) since my truck is in paint & body mode and we discovered it is missing. Any leads on where to find them or more details on the alternative solution above would be appreciated. In a related question, it looks like there was something directly below these covers where the water drains out that is also missing. I see 2 plastic pins that appear to have held something in place at one point but it is no longer there. Any idea what this could be? It would be behind the bottom part of the fender just in front of the doors. I had some rust on the drivers fender here and it appears leaves have been packed here for a while causing water, grime, etc to just sit here which likely caused the rust. Thank you in advance for the help. Link to comment Share on other sites More sharing options...
kramttocs Posted Friday at 12:08 PM Share Posted Friday at 12:08 PM Sounds like you're talking about the duckbill drain rubber. General consensus now is to leave them off as they clog up. Link to comment Share on other sites More sharing options...
kramttocs Posted Friday at 12:16 PM Share Posted Friday at 12:16 PM And going back to the upper grommets, I am still not sure what purpose they serve in our trucks. It has been said to prevent water from splashing into the fresh air intake (passenger side) but that seems like an odd place to try and prevent that. For that, a better solution, and one I assume Ford intended initially, would be to place two speed nuts in the metal diverter up there and fabricate a shield. Has anyone heard of other reasons for the grommets? Link to comment Share on other sites More sharing options...
ArdWrknTrk Posted 3 hours ago Share Posted 3 hours ago I think you're right. They're there so sealant can be applied (likely with a wand) as the cab is assembled but block a direct path for water, ice, whatever. Without that access you wouldn't be able to seal the seams in the vertical 'legs' leading to the kick vents and infamous cowl drains. Link to comment Share on other sites More sharing options...
Recommended Posts