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

Part Number: RM-450710

99 Reviews | 17 Questions

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$36.24

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roadmaster accessories and parts replacement female quick disconnect for brakemaster air line - 1/8 inch thread

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

roadmaster accessories and parts quick disconnects rm-450710

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Replace the female 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-450710 or order online at etrailer.com. Free expert support on all Roadmaster products. Great prices and Fastest Shipping for Replacement Female Quick Disconnect for Roadmaster BrakeMaster Air Line - 1/8" Female Thread. Accessories and Parts reviews from real customers.

Roadmaster Accessories and Parts - RM-450710

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

Features:

Replaces the female quick connection with a 1/8" female pipe thread of your BrakeMaster braking system
Fits Roadmaster BrakeMaster systems (RM-9000, RM-9100, RM-9060 and RM-9160)
Made in the USA
Limited lifetime warranty

Specs:

1/8" NPT Female fitting

450710 Replacement Road Master Female Quick-Disconnect for Brake Master Flat Tow Brake System Air Line 1/8" Female Pipe Thread

Video of Replacement Female Quick Disconnect for Roadmaster BrakeMaster Air Line - 1/8" Female Thread

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

Video Demo Roadmaster Female Quick Disconnect BrakeMaster Air Line 18 Inch NPT RM 450710

Review of Roadmaster Female Quick Disconnect BrakeMaster Air Line 1/8 Inch NPT - RM-450710

Video Transcript for Review of Roadmaster Female Quick Disconnect BrakeMaster Air Line 1/8 Inch NPT - RM-450710

Hi, everybody, Andy here with the trailer.com. And today, we're gonna take a brief look at this Roadmaster female quick disconnect for BrakeMaster air lines. Now, this brass fitting with the one eighth of an inch female pipe thread is going to make connecting and disconnecting your BrakeMaster error hose fast and easy. And this is going to work with the BrakeMaster models that you see there on your screen the RM-9000, the RM9-9100, the RM-9060 and then finally the RM-9160. This is made here in the USA and again, it's brass and this does have a limited lifetime warranty on it from Roadmaster. So this is a part that is directly from Roadmaster.

Well, that's going to conclude our real 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:

99% were satisfied with this product

1% of customers were not satisfied

4.9

99 reviews

5 Stars		(91)
4 Stars		(6)
3 Stars		(1)
2 Stars		(0)
1 Star		(1)

by: Peter 06/14/2026

The part fit perfectly and was exactly what I needed for the repair. Unfortunately, shipping took longer than expected because USPS misplaced it at a facility, but the product itself is great.

by: Rich 05/25/2026

Ordered on a Sunday afternoon when I didn’t expect anyone to answer the phone. Kim answered and was very knowledgeable and helped get me the right part delivered on Wednesday. It was a fantastic experience and this is what great customer service looks like. Rich

by: Wayne 03/13/2026

etrailer phone technicians helped guide me to get the parts I needed and had them delivered to me in a timely manner

by: Daryl 09/18/2026

Worked fine just what i needed

by: Rick 01/25/2026 One Year Later

Easy connect to air line with no air leak

by: James 01/24/2025 One Year Later

An expensive little part, but it works for my tow setup. No problems with it.

James One Year Later

1/25/2026

I bought several parts to allow a newer Honda to connect to my motorhome. They are expensive, but they have worked perfectly for thousands of miles.

Gwendolyn Y.

1/26/2026

@James That's awesome! What has been your favorite place you have traveled to?

James

1/27/2026

@GwendolynY The Olympic Peninsula, Washington State.

Gwendolyn Y.

1/27/2026

@James I'll have to add this to my ever-growing list of places to see in Washington!

by: Rich 07/15/2026

Correct part and fast service. Thank you.

by: Joe 04/23/2026

Arrived quickly and was the part I needed

by: Quentin 07/09/2018

On a recent trip I broke an air line connector in my towing brake system. Four RV stores in 3 states didn't have the part, but then I found it on etrailer. Ordering was easy and the correct part arrived quickly. Very happy with both their product selection and their service.

by: PeteB 12/17/2014

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: J Sheldon 03/12/2017 One Year Later

you guys have always provided the best customer service, that's why I only buy from you guys when you have the product I'm looking for. Thanks for the follow up........ I have never had ANY company do that before, and that says a lot because I have been buying stuff for 60 years.

John S. One Year Later

3/12/2018

After a year and 3 trips coast to coast your product still works like a charm, never had a single problem with it. Thanks for the follow up.

by: Robert 06/01/2024

Always just great, reliable service. No issues.

Robert One Year Later

6/5/2025

No issues, solid performance. I would buy it again.

by: William 06/01/2019

Purchased these to replace existing connectors, old ones would come disconnect on the road. New ones road tested perfect. Etrailer are the only ones that sell these separate and don't cost an arm and a leg. Delivery was prompt.

by: David 01/08/2019 One Year Later

This part was a hard to find piece. You had what I needed and it was sent to me in a reasonable time.
This part helped me purge my inline air tank for the air braking system on my car.
Thanks for your help.

by: Ken Y. 08/19/2017

Adapted to standard air hose connector for checking operation of BrakeMaster and Brake-Away on "tow'd" without having to connect to motorhome.

by: Ernest 01/09/2021

Perfect just what I needed .

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by: Shirley 10/19/2018

The website and ordering process made this so easy to select the correct parts. The tracking process after ordering was a great help since it was sent to a campground. We received the product in the timeframe we selected for shipping. We would order again and would recommend it to everyone.

by: Rick M. 11/16/2016

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

by: Frank 10/28/2016

Product was delivered in a timely manner. This connection was for the air line that went from my motorhome to the breaking system on my car. Had looked locally for connection for over a month. Very pleased!

by: Michael 06/14/2023 One Year Later

Brake line quick connects work great! No problems! Make the job simple!

by: Dennis M. 06/13/2017

Exact replacement that was needed to repair my Roadmaster air system. It was shipped and received in a timely manner.

by: Bartlett 08/18/2021

Found etrailer.com while making a search for a part that could not be located in New Mexico, Arizona, Utah and Colorado. The part was originally back ordered. Lori B got involved and found the part under a different manufacturer. It shipped immediately and arrived on time. Then, which seldom ever happens, Lori B followed up to indicated the part had been delivered to the address. Confirmed it is there. I am very impressed with Lori B and her customer service skills. Refreshing!!!!!

by: Gary M 08/09/2015

A hard to find replacement part in local brick & mortar stores. After ordering I was notified item was back-ordered but only waited a few days for shipment. Very happy with communications and service.

by: Scott 03/30/2019 One Year Later

Helped me finish up on my Brakemaster install between our motor home and Jeep - everything works great!

by: Paradise By The Sea 04/17/2025

Got the part, as promised, when promised. Thank you

Brooke M.

4/18/2025

I'm intrigued by your name...Where is this seaside paradise you speak of?

true

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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?

Replacement Parts For RoadMaster Brakemaster 9000 Towed Vehicle Brake System
I think what you are looking for is the RoadMaster BreakAway kit, part # RM-98160. This kit was originally designed to be used for a second vehicle so all you have to do is move the cylinder and brackets. Since you have the bracket and cylinder, and need everything else, this kit should match your needs pretty well.
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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.
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Replacement Parts Needed for Brakemaster 9000 Where Air Leaks Out of 90 Degree Diaphragm
I spoke with my contact at Roadmaster and sent him the picture you submitted and he said you would need the part # RM-450601-50 and the part # RM-450045
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Solution for Leaking Air Cylinder of Roadmaster BrakeMaster
If the air cylinder of your BrakeMaster setup is leaking air you would need to replace it with the part # RM-9100-50. Roadmaster does not offer a rebuild kit for this system.
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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...
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Availability of Replacement Parts for Roadmaster Brakemaster System, # RM-9160
We have several replacement parts that are compatible with the Roadmaster Brakemaster Systems, like # RM-9160. If you look in the parts break down in the included instructions link, you can see the parts in the Brakemaster system. The RM-9160 did not come with a compressor, but the RM-9060 did. It can be obtained in the RoadMaster BrakeMaster Second RV Kit for Hydraulic Brakes, # RM-98300. The Brakemaster # RM-9160 had a break away kit that included some parts that looked like an air tank...
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Second RV Brakemaster 9000 Kit Recommendation
Yes, if you have hydraulic brakes you would want a RoadMaster BrakeMaster Second RV Kit for Hydraulic Brakes # RM-98300 and if you have air or air-over hydraulic brakes you would want a Roadmaster BrakeMaster Second RV Kit # RM-98200.
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Cover for Quick Disonnect Fittings on Roadmaster BrakeMaster
If you have the Roadmaster BrakeMaster and need to cover the quick disconnect the part you need is # RM450760-50, which is sold in a quantity of one so you'd need to order a pair to cover two fittings.
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Additional Air Line Needed for the Roadmaster Brakemaster Braking System
The air line assembly for the Roadmaster BrakeMaster, # RM-921004, is 76 inches long. This cord is only 12 inches shorter than the 88 inch cord # RM-921004-88. I spoke with my contact at Roadmaster and he told me that these are the only two preassembled lengths that they offer. Instead, I recommend purchasing the correct length of air line hose, # RM450700, and the Quick Disconnect Kit, # RM-921004-80. The air line hose is sold by the foot, so for 36 inches, you will want to order a quantity...
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Replacement Electrical Cord for a Roadmaster Brake Master 9000 Supplemental Braking System
I believe what you need is replacement cord # RM-921004. This is a 76 inch long cord for the Brake Master 9000.
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Equipping 2014 Chevy Equinox for Use w/ Roadmaster Brakemaster 9000
Assuming that the motorhome is good to go, you'll need to following to equip your 2014 Chevy Equinox with the Brakemaster braking system: Brakemaster 2nd Vehicle Kit, part # RM-98160 Brakemaster Seat Adapter, part # RM-88280 Stoplight Switch Kit, part # RM-751439 Fuse Bypass, part # RM76511 Umbilical, part # RM-921004 If you don't have the Ail Cylinder that Mounts to the floor of the towed vehicle and pushes the brake pedal, you'll also need # RM-9100-50 If you haven't yet wired the...
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Availability of Replacement Female Quick Connector for Roadmaster BrakeMaster
Sounds like you are just looking for the RoadMaster Female Quick Disconnect for BrakeMaster Air Line # RM-450710 which is correct for the Roadmaster 9000 part # RM-9160.
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Motor Home Side Female Air Line Quick Disconnect for Brakemaster Braking System
You can get both sides of the quick disconnect for the Brakemaster braking system using part # RM-921004-80. Or for the female end with the L-shaped mounting bracket use # RM-921004-60. Or for just the female fitting use # RM-450710.
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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.
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Brakemaster 9000 Seat Adapter Recommendation for a 2003 Volkswagen New Beetle
The correct seat adapter to use your Roadmaster Brakemaster System 9000 in your 2003 Volkswagen New Beetle is the part # RM-88261. The floor plate you would need is the part # 450650-01.
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Easy Way to Find Stoplight Switch Circuit on 2015 Chevy Silverado 2500HD
To find the brake switch on a vehicle what you need to do normally is test the wires running to the brake pedal switch till you find a circuit that has voltage only when the brakes are applied. That being said an easy way to find it for your specific vehicle (2015 Chevy Silverado 2500) would be to plug the brake controller harness part # 3016 into the junction box under the dash of your truck and then tap into the red wire of the connector. I attached an install video that shows how this...
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Second Motorhome Kit Recommendation for Roadmaster Brakemaster Kit
What you need for your Roadmaster Brakemaster is the Second Motorhome kit part # RM-98200 if what you have is the Roadmaster Brakemaster 9000. This comes with everything you would need to use your Brakemaster on a new motorhome.
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Do you have a question about this Accessories and Part?

Info for this part was:

Expert Research:

Michael H

Expert Research:

Jameson C

Expert Research:

John H

Updated by:

Wilson B

Updated by:

Isabelle B

Updated by:

Amanda K

Installed by:

Andy C

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