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Replace the coiled air jumper hose for your Demco Air Force One supplemental braking system.
Features:
Fits:
California residents: click here
Videos are provided as a guide only. Refer to manufacturer installation instructions and specs for complete information.
Today, we're taking a look at a replacement air jumper. Now, this replaces the air jumper for SMI Air Force One supplemental braking system, part number SM99202. This coiled air hose connects your air assembly in the RV to the operating unit on the towed vehicle. It has the quick connect ends that makes the unit easy to attach and detach. These ends are corrosion-resistant when it comes to the finishing, so it's gonna keep the quick connect safe from rust and corrosion. It is a direct replacement part, straight from the manufacturer, and it's blue in color when it comes to the hose, and the length when it's fully stretched out is around 7 feet long.
That's gonna do it for today's look at the replacement air jumper for the SMI Air Force One supplemental braking system, part number SM99202.
The Air Jumper for my Demco Air Force One tow system arrived on the date expected, and was in the OEM packaging from Demco. Very satisfied with the item and the service I received from Joshua B @ etrailer
Fantastic parts and exactly as advertised. Thank you again, ETrailer
You were very helpful even though I did not receive the air hose the next day as requested.You said you would refund me the overnight shipping fee.Thank you.
Awesome customer service and projected date of delivery was exactly the date delivered.
Even though our coach has been in the shop for 9 months, our dedication to finding the very best products have always s been our primary goal. We have been rving for 14 years and have found your products to be just that.
Amy J was so helpful assisting in my product choice. I have ordered from e-trailer before and have always been impressed with their expertise quick response. Thank you, Amy.
Gwendolyn Y.
3/6/2025
Hey John. Thanks for sharing your kind words about Amy! I'll definitely make sure she gets this :)
The hardest part was figuring out exactly what part I needed for my type of vehicle and motorhome connection. I followed the directions on this website and it worked out perfectly. The hose is great! Just what I needed.
We needed this part to tow our car behind our motorhome. Etrailer said UPS could deliver it in 1 day so I paid extra for UPS and the next day it arrived.
Easy website to find what you are looking for and fast shipping
This was replacement for original that was damaged. It works great.
Perfect. Needed part asap and received it next day. Just what we needed.
Customer service was outstanding.
I needed this fast as the one I had disconnected and was damaged. It came within 48 hrs but it was the wrong part. The website asked for my vehicle and this is the part it said I needed however it didn't ask if my vehicle was on a Freightliner or a Spartan chassis. There is a difference and the one I got didn't fit. I had no choice as I needed it right away so I swapped the fittings with the damaged one to make it work.
We were on the road and somehow lost our jumper air hose. Without it we had no towed brakes. Thanks for helping get the new part to our camp site and get us back on the road.
Marie 
6/14/2024
We have managed to not lose our new hose you only do that once and the hose is working as it should.
Etrailer is awesome. If you don’t know exactly what part you need, customer service always seems to know what you’re needing. Order lots of trailer parts and they are usually the cheapest and shipping is fast. Quality of parts is always good.
It was a perfect match for my existing Demco airbrake hose and it arrived promptly. Now I have a spare.
Works great, no issues at all hooked up perfectly.
Works awesome! Thank you
Just arrived so have not used it. It appears to be a direct replacement for my old damaged air hose. Once I get to use it and if it performs as expected i would then give it a 5.
Perfect for 4 wheel down towing
Ordered for next day delivery. 24 hours later it was at my door!
E trailer always has the hard to find products. I always look for. Not only that, they spend time with great explanations and videos on how to use some of these products. Each trailer is a great site.
Product arrived on-time as promised and fits perfectly! Thanks for getting me back on the road.
great service
This hose was the exact part that I nee ded.
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Victoria H.
3/22/2025
I hope you're able to get back on the road soon Lenmar! We enjoy being your go-to for all your RVing needs and will be here for you anytime you need along your adventures!