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Replace the vinyl cap that slides over the car-side air valve on your Air Force One supplemental braking system. Prevents damage to the valve.
Features:
California residents: click here
Videos are provided as a guide only. Refer to manufacturer installation instructions and specs for complete information.
So it's never a bad idea to pick up a replacement small plug, and a large plug for your tow vehicle and your towed vehicle. This is what's going to ensure the longevity and smooth running of your SMI system. This is going to go over the end of your female and male end, so that you don't have to worry about getting any dirt or debris inside your air hose fitting when you're not using it. We'll put one on our vehicle end too, just to keep the dirt and debris out of that also.My personal opinion, if I had a system just like this, I would want to make sure all of my plugs are all plugged up before I go anywhere after my trip. So that means when I unhook my air hose that stretch from my towed vehicle to my tow vehicle, I'm going to pick up a couple of these extra plugs and put them over top of the fittings on my hose too, just to make sure everything in that hose stays nice and clean.Well guys, with all that being said, that's going to do it for our review and replacement of our large and small rubber caps.
I think this is way too much to charge for these simple dust covers. Should be at least 6 pieces for this price.
Expensive for what they are but as a backup I was willing to purchase…
Thank you etrailer for carrying them….
they they work very well they stay on the problem is once in a while. People decide to five finger discount.
Small but necessary part for brake system to keep air valve clean. Thanks etrailer!
Works great but $16 including shipping was way too expensive but I needed it.
Fits nicely but a little pricey
Fits pefectly
etrailer never disappoints .
Fast service
Great communication.
I purchased these as a back up to the factory provided caps.
Exactly as described, fast shipping, thanks for the great service!
The cover for the auto side could fit tighter. It’s easy for it to fall off
As advertised. Fits like original
Just perfect
I bought some spare large and small air fitting covers used on our SMI Air Force One supplemental braking system. These small plastic covers can split after some use--as have the ones in use on my system. Not much more to say. They keep the dirt out of the lines. I always like to have a few spares.
Etrailer always gives good service. I usually look to them first for RV related parts.
I’ve still got the original caps. They are in very good condition after 8 years. It’s a good to have extras.
Perfect fit. Quick response time.
i=I ordered two of these however they will only fit on the male end of the quick connector its way too small to fit over the female quick connector if you have the larger one for the motorhome that came with the kit please let me know ,thanks
Jenny N.
5/29/2024
There is another cap that Demco offers. It is part # SM99609 which replaces the large vinyl cap that slides over the Quick-Disconnect air valve on the Air Force One supplemental braking system.
Excellent customer service.
Seems to fit nicely.
Perfect replacement for my Demco AFO. Fits snug so it won't come off easily.
Had exactly what I needed. Shipped the next day and arrived on time Thanks so much
Perfect replacement caps! If you're like me and put these things in your pocket when hooking and unhooking, eventually one will go missing. I now have spares for the next time!
Great service and fast shipping!
Rick H.
6/28/2016
Perfect. Thanks!
I’ve felt with etrailer a number of times over the years and have always been satisfied with the service and product.
Part delivered on time
Hard to find caps over the ports on the vehicle, related to the Air Force One supplemental braking system. Caps fit properly and are still in use 1 year later. These ports can be stolen by insects, specifically wasps, looking for a hiding place when RV is in storage, so the caps are necessary to keep out pests and dirt that may foul the air line. Keeping them covered is the best choice on both the motorhome and the tow vehicle.
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Roger
9/14/2020
Air line fitting covers are still going strong!