To see if this custom-fit item will work for you please tell us what vehicle you'll use it with.
Thank you! Your comment has been submitted successfully. You should be able to view your question/comment here within a few days.
Error submitting comment. Please try again momentarily.
Replace the coiled air jumper hose for your Demco Air Force One supplemental braking system.
Features:
Fits:
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.
Customer Satisfaction Score:
96% were satisfied with this product
4% of customers were not satisfied
Ratings & Reviews
The product was an exact replica of the Blu-Ox air hose connection. Service from-trailer was excellent. The worked with me on shipping options and I received product while staying at a State Park in time for my travels on down the road.
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.
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.
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 :)
I just returned from a 3100 mile trip where my current air brake hose started leaking as the result of an earlier accident. i must have checked 15 retail shops and RV centers along the way for a replacement product, no one had a separate hose, only the full air force one system. i found your company online and was happy that the product arrived ahead of schedule and works perfectly.
Chuck
9/28/2020
All great!
This product has held up great for over a year with no issues
Awesome customer service and projected date of delivery was exactly the date delivered.
I always like to have spares on my esse ntials.
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.
Exact replacement for original hose
Fantastic parts and exactly as advertised. Thank you again, ETrailer
On time delivery
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
Great job Jermey thank you for your ass istance.
Mike L.
2/11/2026
Thanks Richard, I'll pass your kind comment along to Jeremy!
I always go back to etrailer when I mess up a part or something breaks.
Exactly what I needed and shipping was quick which I needed!
Joanne K did an excellent job identifying the correct part I needed.
Thanks it just what I need.
Exact same as original. Whole transaction excellent.
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.
David
12/8/2025
Hose has worked as advertised. Glad to have it.
Proper item received in a timely matter. Thank you etrailer!
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.
Bob
10/22/2025
It’s a perfect replacement for the one I damaged. Very good quality.
It’s perfect. I tried unsuccessfully via Amazon and locally to replace my broken Air Force One line between my coach and Jeep. Got it right the first time from etrailer. The others gave a male end which didn’t fit.
We ordered the wrong size Air Jumper the first time. They were on it - helped us find the correct size, shipped it out to our next campground, and emailed me a return authorization to drop off the incorrect one at the next UPS store we saw. Couldn’t be happier with these guys!
This is the second (or maybe third) time I have used eTrailer to help me sort out problems with my coach. I can't say enough as to how happy I am for their service, from start to finish. Kayleigh helped me sort through the parts and made sure I had the correct one for my make and model of coach. She set up delivery to my next KoA and even with express delivery, they did not charge an arm and a leg for that expedited shipping via UPS. Finally, I received an email trail of the process from start to finish and a follow up from Kayleigh that they showed it had been delivered. If you need parts and you are on the road, eTrailer is the way to go in my book.
Info for this part was:
At etrailer we provide the best information available about the products we sell. We take the quality of our information seriously so that you can get the right part the first time.
Richard
6/25/2019
It broke. I think these air lines are not very resilient but that’s ok just bought another one fro RV Pats store.