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Replacement Male Quick Disconnect for Roadmaster BrakeMaster Air Line - 1/8" Female Pipe Thread
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Roadmaster

Replacement Male Quick Disconnect for Roadmaster BrakeMaster Air Line - 1/8" Female Pipe Thread

Part Number: RM-450720
92 Reviews | 5 Questions
In Stock
$19.03
 Accessories and Parts

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roadmaster accessories and parts replacement male quick disconnect for brakemaster air line - 1/8 inch female pipe thread
roadmaster accessories and parts quick disconnects rm-450720
roadmaster accessories and parts flat tow brake system replacement male quick disconnect for brakemaster air line - 1/8 inch female pipe thread

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Replace the male quick disconnect with a 1/8" female pipe thread for your Roadmaster BrakeMaster supplemental braking system. 1-800-940-8924 to order Roadmaster accessories and parts part number RM-450720 or order online at etrailer.com. Free expert support on all Roadmaster products. Great prices and Fastest Shipping for Replacement Male Quick Disconnect for Roadmaster BrakeMaster Air Line - 1/8" Female Pipe Thread. Accessories and Parts reviews from real customers.
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  • Reviews (92)
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Roadmaster Accessories and Parts - RM-450720

  • Flat Tow Brake System
  • Quick Disconnects
  • Roadmaster

Replace the male quick disconnect with a 1/8" female pipe thread for your Roadmaster BrakeMaster supplemental braking system.


Features:

  • Replaces the male quick connection with a 1/8" female pipe thread of your BrakeMaster braking system
  • Fits Roadmaster BrakeMaster supplemental braking system
    • RM-9060, RM-9060-900002, RM-9100, RM-9100-900002, RM-9160, and RM-9160-900002
  • Quantity: 1 replacement quick-disconnect fitting
  • Made in the USA
  • Limited lifetime warranty


Specs:

  • 1/8" NPT Male fitting


450720 Replacement Road Master Brake Master Flat Tow Brake System Male Quick-Disconnect with 1/8" Female Pipe Thread for Air Line







Customers Who Purchased This Accessories and Parts Also Bought...



Video of Replacement Male Quick Disconnect for Roadmaster BrakeMaster Air Line - 1/8" Female Pipe Thread
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Videos are provided as a guide only. Refer to manufacturer installation instructions and specs for complete information.




Video Transcript for Replacement Male Quick Disconnect for Roadmaster BrakeMaster Air Line: The Breakdown

Hi, there. I'm Michael with etrailer.com. Today we're gonna take a quick look at this Roadmaster Male Quick Disconnect. Now, this is going to allow you to make a quick connection and disconnection for your BrakeMaster air line. This is going to work with the BrakeMaster models that you see on the screen there. So if you have any of those, you can trust this is going to work for you.

This is a one eight inch NPT male fitting. And so, it is going to make for a very easy quick connect and a disconnect for you. It is made here in the USA, so you can trust it is gonna be excellent quality. It also comes with a limited lifetime warranty. So if you we're to have any issues with it, you're more than welcome to reach out to us here at etrailer.com.

But more than anything, because this is a Roadmaster product, you can trust it is gonna work with your BrakeMaster models. And that completes our look for today. Again, I'm Michael with etrailer.com. Thanks for watching.

Customer Satisfaction Score:

Ratings & Reviews

4.7

92 reviews
5 Stars
(77)
4 Stars
(11)
3 Stars
(1)
2 Stars
(1)
1 Star
(2)
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by:
Perfect replacement for my damaged one
by:
Glad you have these in stock and at a more reasonable price.
Thanks for the very fast shipping.
by:
Easy to connect to existing air line with no air leak.
by:
They were the parts I needed
Steven profile picture

Steven

3/8/2026

super

Kate F. profile picture
Etrailer Expert

Kate F.

3/9/2026

@Steven Glad to hear things are holding up as they should while you are on the road to adventure Steven! What trip are you looking most forward to this year?
by:
the part was a perfect fit
by:
The connector for my Air Force one supplemental breaking system had come off and drug on the ground ruining it. I had no luck finding one locally but etrailer had just what I needed. Fast service and it was just what I needed.
Brian profile picture

Brian

6/9/2019

Still working a year later. Very happy.

by:
Hard to get replacement part arrived promptly & works as it should. Was easy to find on web site. The only down side was the shipping which cost more than double the product because I needed expedited shipping. Overnight would’ve been even more.
Russ profile picture

Russ

7/2/2021

Working perfectly since Im more careful to ensure its connected properly!

by:
After having searched extensively for air quick couplings for our motorhome and toad and having gone to more than a very fair number of possible suppliers, I happened to stumble on etrailer.com. THAT was my lucky day! Price and service, I consider them the best in the country.
Give them a try and you'll be glad you did... I can vouch for that.
I got both the male & female couplings so I am good to go for awhile.
May your journey be a memorable one.
That shouldn't be a problem should one ever needs something etrailer.com can supply and deliver in almost the blink of an eye.
by:
I ordered the connector from etrailer and received it very quick. Install on our toad was super easy and I’ve towed over 5,000 miles this past year without a single problem. Thanks etrailer for another fine product.
by:
Damaged when connecting air line disconnected from back of motorhome. Etrailer was the only place I could find it and was cheaper than paying shipping from manfacture
by:
My order of a air linel cord for the RoadMaster 9000 was delivered accurately and in a timely manner. All personnel were very helpful and very friendly. I will gladly do business with this company again!
by:
Fit perfect on my air line for Air force 1 brake system.
by:
Hard to find air brake connector, as always can get anything we need at etrailer.
by:
The parts worked as they should
Paul profile picture

Paul

4/27/2025

Great, no problem

by:
etrailer is awesome. I have been in my motorhome for more than years full time. I have ordered many items from them. Ervytime I receive a good product.
Thank you etrailer!!!
by:
Had a hard time finding my part, etrailer had it though, so I ordered it, super fast shipping, right part, Thanks etrailer
by:
This air coupler worked perfectly to hook up my brakes on the motorhome.
by:
part was exactly what I needed. Air hose for my RV is repaired and installed. Dealer wanted several weeks to order a new hose when all I needed was this fitting.
by:
I failed to verify that the pneumatic line to my dinghy was fully engaged, and when we arrived at our destination, I found that the line had come loose and had dragged during part of the trip. This fitting is an OEM replacement that completely repairs the damage.
by:
I bought this item to carry as a spare in case I damaged an air line. It's just like my original. It's nice to have piece of mind.
by:
It was a perfect match. I needed a replacement after the original got damaged. I could not find it at any of the local dealers. I was fortunate to find it on line.
by:
Good quality fittings for your airlines!
by:
Excellent service supplying a hard to find item in a timely and affordable way.
I highly recommend etrailer.com.

by:
Just what I needed. Now I keep a spare connector with me on all trips.
by:
description of item accurate and was in perfect condition upon arrival. Shipping was quick.
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See what our Experts say about this Roadmaster Accessories and Parts

Do you have a question about this Accessories and Part?
  • Adapter For Vehicle Side Connector For Roadmaster BrakeMaster To BRAKESYNC Connector
    For your Roadmaster BrakeMaster System w BrakeAway for RVs w Air or Air Over Hydraulic Brakes # RM-9160, I recommend swapping out the vehicle side connector with # RM-921004-50, and then the connecting hose should work as normal with # RM-450710 on one side, and # RM-450720 on the other end.
    view full answer...
  • Recommended Quick Connect When Adding an Onboard Air Compressor System
    While the Quick Disconnect Kit # RM-921004-60 would work you would have to ensure all the components you connect to it have a 1/8" Male # RM-450720 quick disconnect. The more common size quick connect on compressors is 1/4" like the Quick Connect # BDW42024. This would attach to a 1/4" flexible air line with the Connector # F3046-1.
    view full answer...
  • Replacement Male and Female Quick Disconnects and Ferrule for Roadmaster BrakeMaster Braking System
    We do have the replacement parts you need for your Roadmaster BrakeMaster System # RM-9160. It sounds like you need both the male and female quick disconnect fittings, and to get both the correct part is the Roadmaster Quick Disconnect Kit for Brakemaster # RM-921004-80. They are also available separately with the RoadMaster Female Quick Disconnect # RM-450710 and RoadMaster Male Quick Disconnect # RM-450720. For the ferrule, the correct part is the Replacement Brass Ferrule # RM-450740. If...
    view full answer...
  • Male Quick Disconnect Fitting And Air Line For The Roadmaster Brakemaster
    For the Quick Disconnect Kit for Brakemaster Air Line # RM-921004-60, you can use the RoadMaster Male Quick Disconnect for BrakeMaster Air Line # RM-450720. Additionally, the # RM-921004-60 uses a 1/4" air line in which you can use any of the following air lines: -For a 15' line # AL35RV, -For a 20' line # AL63RV, -For a 30' line # AL73RV, & -For a 50' line # AL23RV.
    view full answer...
  • Troubleshooting Motorhome Air Brake Valve for Inflating Quad Tires
    Air tow fittings use a quick release not a threaded fitting like you referenced. You can see these on the Demco SBS Air Force One Supplemental Braking System for Motor Homes with Air Brakes - Proportional # SM99243 which is the braking system you would use in the flat towed vehicle. If you wanted to air up your quad tires using those valves, you would need the Reducer for Bulldog Winch Air Tank - 1/4" NPT Male to 3/8" NPT Female # BDW42038 and then the Quick Connect Coupler for Bulldog...
    view full answer...
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Info for this part was:

Employee Wilson B
Updated by:
Wilson B
Employee Isabelle B
Updated by:
Isabelle B
Employee Amanda K
Updated by:
Amanda K
Employee Michael B
Installed by:
Michael B

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