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Replacement Air Jumper for Roadmaster BrakeMaster Flat Tow Brake System
Roadmaster

Replacement Air Jumper for Roadmaster BrakeMaster Flat Tow Brake System

Part Number: RM-921004-88
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Replace the air line of your Roadmaster BrakeMaster that connects the RV-side of the system to the vehicle-side. 1-800-940-8924 to order Roadmaster accessories and parts part number RM-921004-88 or order online at etrailer.com. Free expert support on all Roadmaster products. Great prices and Fastest Shipping for Replacement Air Jumper for Roadmaster BrakeMaster Flat Tow Brake System. Accessories and Parts reviews from real customers.
  • All Info
  • Reviews (54)
  • Q & A (0)
  • Videos (1)
  • Photos

Roadmaster Accessories and Parts - RM-921004-88

  • Flat Tow Brake System
  • Air Lines
  • Roadmaster

Replace the air line of your Roadmaster BrakeMaster that connects the RV-side of the system to the vehicle-side.


Features:

  • Replaces the air line of your Roadmaster BrakeMaster braking system
  • Connects the RV-side of the system to the car-side
  • Air line length: 88"
  • Limited lifetime warranty


Fits:

  • Roadmaster BrakeMaster supplemental braking systems:
    • RM-9060
    • RM-9060-900002
    • RM-9100
    • RM-9100-900002
    • RM-9160
    • RM-9160-900002


921004-88 Replacement Road Master Brake Master Supplemental Braking System Patch Cord and Air Line Assembly





Video of Replacement Air Jumper for Roadmaster BrakeMaster Flat Tow Brake System

Videos are provided as a guide only. Refer to manufacturer installation instructions and specs for complete information.




Video Transcript for Review of Roadmaster Air Line Assembly For BrakeMaster - RM-921004-88

Hi, everybody. Andy here with etrailer.com. And today we're gonna take a brief look at this Roadmaster air line assembly. This is going to fit your Roadmaster BrakeMaster braking system, and this air line assembly, also known as a patch cord, runs between your RV's air brake system and your BrakeMaster 9000 on your vehicle. It connects your RV's monitor system as well as the supply of compressed air between your vehicle and RV. This is 88 inches long, and as you can see, it does have the male and female end.

So if you happen to have lost the original, or it became damaged, this cord will work in place of the original on your BrakeMaster braking system as a replacement cord. Well, that's gonna conclude our brief look today. I do hope that it was helpful for you. Again, my name is Andy. Thank you for joining me.

.

Customer Satisfaction Score:


Customer Reviews

Replacement Air Jumper for Roadmaster BrakeMaster Flat Tow Brake System - RM-921004-88

Average Customer Rating:  4.8 out of 5 stars   (54 Customer Reviews)

Replace the air line of your Roadmaster BrakeMaster that connects the RV-side of the system to the vehicle-side.

by:

Trailer is the only company I know of that had this product available.



by:

Very fast response and my item came quickly. My original brake line came loose at one end and dragged on the street and deformed the end. No one in my area had a replacement end so I googled the brake line and etrailer had the exact one which goes from my RV to my car. We are back one the road with brakes on our tow car.

Michael profile picture

Michael

8/24/2021

Still working. We are currently on a roadtrip in Canada, so its used a lot.



by:

I ordered some parts for my brakemaster tow package. The prices were very good and I received them in a timely manner. I will definitely use Etrailer again in the future. Thanks

Jim M. profile picture

Jim M.

7/23/2018

The products continue to work perfectly as designed



by:

Perfect fit, nice quality



by:

Spare air line for brakemaster system, was able to 2 day ship to our next rv spot

Fits nipples perfectly



by:

Professional service



by:

Great service. Product was delivered faster than expected and I was really happy.



by:

E trailer has always had excellent service and everyone that I have delt with was professional and far exceeded my expectations.



by:

Excellent quality fast shipping. Thank you.



by:

Julie is the BEST!!! Fabulous service, quick shipping and items received in great shape. I am going to use etrailer.com many time in the future.



by:

Quality product from Roadmaster. Great service from Nikki @ etrailer.com



by:

Would not buy again, it came loose after maybe 5 uses, and was dragging on highway for miles before we noticed. Would pay the extra money and buy the better one.



by:

I was on the road and needed the product fast. eTrailer came through with the correct product as quick as one could expect.



by:

Quick shipping and in good condition.



by:

Thank you. I received this much needed product in a timely fashion & as advertised.

Reynaldo profile picture

Reynaldo

11/3/2022

Adequate.



by:

Hendrikus profile picture

Hendrikus

9/7/2024

The product works great. What set this apart for us was the great customer service. I damaged the original part while we were on the road going cross country 3 month trip it was important to get the part replaced. Customer service made it happen.



by:

Quality products, always very prompt se rvice.



by:

good product, great service and fast shipping! I just hope the back ordered items come in soon.



by:

Worked great!



by:

Got the help I needed ( as always!) confirmed that it was in stock. Recieved the day it was to come. Did I mention the staff, and how helpful they are?



by:

On time with the right product. Thank y ou.



by:

Product is good but the shipping could be faster



by:



by:

Excellent construction.



by:

Got exactly what I ordered in a timely fashion.


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See what our Experts say about this Roadmaster Accessories and Parts

  • Replacement Brakemaster 9000 Air Line Assembly RV to Vehicle
    The line that you need to connect the RV to the Towed Vehicle is part # RM-921004-88 from the BrakeMaster kit. You only need one of these. It has a male and female end. I recommend to use the RoadMaster BrakeMaster Second RV Kit part # RM-98200 that comes with the quick disconnect you need for the RV side and the airline. All the components you need for the vehicle side can be found in part # RM-98100.
    view full answer...
  • Parts Needed to Install Brakemaster On RV When Tow Vehicle is Already Set Up
    For the BrakeMaster parts for the RV side of your setup you will need a car to RV air line assembly, # RM-921004-88. I also recommend the quick disconnect kit, RV side, # RM-921004-60. And you will need some air line, # RM450700, sold by the foot. Inside the RV you will need kit # RM-98850.
    view full answer...
  • Replacement Hose for RV to Towed Vehicle Using Roadmaster BrakeMaster 9000
    I have a solution for you, but the Demco hose will not be compatible with a Roadmaster braking system. It sounds like you're looking for the Roadmaster BrakeMaster Air Line Assembly - Car to RV # RM-921004-88, which is the correct replacement hose that runs between the RV's air brake system and the BrakeMaster 9000 on your vehicle.
    view full answer...
  • Correct Replacement Air Line Assembly for SMI Air Force One Supplemental Braking System
    The correct replacement is going to depend on the supplemental braking system you currently have. If you have the SMI Air Force One Supplemental Braking System # SM99243 then the Replacement Air Jumper # SM99666 that you referenced would be the correct choice. If you have the Roadmaster BrakeMaster 9100 or # RM-9160 then the correct part is the Roadmaster BrakeMaster Air Line Assembly # RM-921004-88.
    view full answer...
    Image 1 for
  • Replacement Parts Needed to Connect Brakemaster Supplemental Braking System to RV with Air Brakes
    In addition to the RoadMaster BrakeMaster Replacement Air Cylinder # RM-9100-50 to connect the RV's brakes to your Jeep Grand Cherokee all depends on what you already have. The Jeep will need the air lines and wiring installed in it, if it isn't already. If not you'll need # RM-98100. The kit to install into the RV, if it needs it, is # RM-98200. The air line to connect the two together is # RM-921004-88. Depending on how much of the pieces you need, and which system you have, it may...
    view full answer...
  • Replacement Air Line Assembly for Roadmaster Brake Master 9000
    I have a solution for you, but the Demco # SM99666 is not compatible with the Roadmaster Brake Master 9000. There is a specific replacement for the air line assembly on the Brake Master with the Roadmaster BrakeMaster Air Line Assembly - Car to RV # RM-921004-88, which would be what you're looking for. It's not a coiled line but the fittings are going to work with your existing Brake Master system.
    view full answer...
  • Recommended Air Hose With Female Quick Connect
    It sounds like you are looking for the Roadmaster BrakeMaster Air Line Assembly - Car to RV # RM-921004-88, however you may just want the Replacement Female Quick Disconnect for SMI Air Force One Supplemental Braking System # SM99613. Another option is the Replacement Air Jumper for SMI Air Force One Supplemental Braking System # SM99666 which has a coiled tube for tension while allowing expansion up to 7 feet.
    view full answer...
  • Replacement BrakeMaster Parts, RV Side for Roadmaster BrakeMaster Supplemental Braking System
    For the BrakeMaster you will need a car to RV air line assembly, # RM-921004-88. I also recommend the quick disconnect kit, RV side, # RM-921004-60. And you will need some air line, # RM450700, sold by the foot. Inside the RV you will need kit # RM-98850. Dealing with air brake systems can be difficult but not impossible. I will email you a copy of the instructions for BrakeMaster # RM-9100. Current pricing is available on each of the product pages.
    view full answer...
  • Replacement Rubber Cover for Air Brake System Fittings
    The Replacement Weather Cap with Wire for Roadmaster BrakeMaster Conversion Kit # RM450760-50 we have to protect the fittings when not in use. If I understand correctly it appears that is what you are seeking to keep road grime out. We do not have any other rubber boots or covers for that system. If you want the covers for the air lines, we have the Roadmaster BrakeMaster Air Line Assembly - Car to RV # RM-921004-88 which has the integrated covers but they are not available separately.
    view full answer...
  • Replacement Patch Cord for a Roadmaster BrakeMaster Supplemental Braking System
    We do have one, # RM-921004-88. This is the one that is listed in the manual as optional because it is longer but you can still use it in place of the original. Current pricing can be viewed by clicking on the link to the product.
    view full answer...
  • Air Brakes on New Hurbst Dump Trailer 20 Ton
    On your Hurst Dump Trailer, the order in which you hook up the hoses isn't an issue, but you do need to connect the correct hoses so you don't get fluid in your air lines. The air brakes will have an air hose that will allow your dump trailer brakes to operated correctly in line with your truck. The hydraulic system will be used to lift the trailer bed for dumping. This will be connected to a separate system. The only systems required to be connected for towing is your trailer brake...
    view full answer...

Do you have a question about this Accessories and Part?


Info for this part was:

Employee Isabelle B
Updated by:
Isabelle B
Employee Amanda K
Updated by:
Amanda K
Employee Andy C
Installed by:
Andy C

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