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RoadMaster Male Quick Disconnect for BrakeMaster Air Line - With 1/8" Female Pipe Thread

RoadMaster Male Quick Disconnect for BrakeMaster Air Line - With 1/8" Female Pipe Thread

Item # RM-450720
Our Price: $12.26
Accessories and Parts

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Roadmaster Air Line Parts Accessories and Parts - RM-450720
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Brass fitting makes connecting and disconnecting your BrakeMaster air hose fast and easy. 1-636-306-4830 to order Roadmaster accessories and parts part number RM-450720 or order online at Free expert support on all Roadmaster products. Guaranteed Lowest Price and Fastest Shipping for RoadMaster Male Quick Disconnect for BrakeMaster Air Line - With 1/8" Female Pipe Thread. Accessories and Parts reviews from real customers.
  • All Info
  • Reviews (52)
  • Q & A (0)
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  • Why etrailer?

Roadmaster Accessories and Parts - RM-450720

  • Tow Bar Braking Systems
  • Air Line Parts
  • Quick Disconnect
  • Roadmaster

Brass fitting makes connecting and disconnecting your BrakeMaster air hose fast and easy.


  • Allows for quick connection and disconnection of BrakeMaster air line
  • Works with BrakeMaster models (RM-9000, RM-9100, RM-9060 and RM-9160)
  • Made in the USA
  • Limited Lifetime Warranty


  • 1/8" NPT Male fitting

450720 RoadMaster Quick-Disconnect for BrakeMaster Air Line

Customer Satisfaction Score:

Customer Reviews

RoadMaster Male Quick Disconnect for BrakeMaster Air Line - With 1/8" Female Pipe Thread - RM-450720

Average Customer Rating:  4.7 out of 5 stars   (52 Customer Reviews)

Brass fitting makes connecting and disconnecting your BrakeMaster air hose fast and easy.


The part I needed for my RV. I will shop etrailer again thanks


Air fitting arrived fast and correct.


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.


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.

Still working a year later. Very happy.
Brian - 06/09/2019


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.

Working perfectly since Im more careful to ensure its connected properly!
Russ - 07/02/2021


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.


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 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 can supply and deliver in almost the blink of an eye.


I searched my city for this to no avail, thanks etrailer for stocking what I need!


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.


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


Fit perfect on my air line for Air force 1 brake system.


Right part for the job.

Great product, perfect for my air line.
Donald P - 08/25/2021


This air coupler worked perfectly to hook up my brakes on the motorhome.


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!


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.


Excellent service supplying a hard to find item in a timely and affordable way.
I highly recommend


Hard to find air brake connector, as always can get anything we need at etrailer.


Had a hard time finding my part, etrailer had it though, so I ordered it, super fast shipping, right part, Thanks etrailer


Item as described


Just what I needed. Now I keep a spare connector with me on all trips.


Good quality fittings for your airlines!


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.


The part is exactly what I needed, ordered and arrived a day early from what was estimated. Customer service was also very helpful in helping me find the part.


changed motor home so needed new hookup worked perfectly


Have not installed this yet, but it looks like a high quality replacement part.

Show More Reviews

See what our Experts say about this Roadmaster Accessories and Parts

  • 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...
  • 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...
  • 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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  • 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 10' line # AL43RV, -For a 15' line # AL35RV, -For a 20' line # AL63RV, -For a 30' line # AL73RV, -For a 40' line # AL83RV, & -For a 50' line # AL23RV.
    view full answer...

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Info for this part was:

Employee Isabelle B
Updated by:
Isabelle B

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