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Demco Hydraulic Brake Line Kit for Single Axle Trailers - Drum Brakes

Demco Hydraulic Brake Line Kit for Single Axle Trailers - Drum Brakes

Item # DM5426
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Demco Accessories and Parts - DM5426
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Designed for single-axle trailers, this hydraulic brake line kit includes a 16' steel line, a 17" steel line, a 6-1/2' steel line, an 18-7/8" flexible hose, a 3/16" tee, and hardware required for affixing lines to your trailer. Call 800-298-1624 to order Demco accessories and parts part number DM5426 or order online at etrailer.com. Free expert support on all Demco products. Guaranteed Lowest Price and Fastest Shipping for Demco Hydraulic Brake Line Kit for Single Axle Trailers - Drum Brakes. Accessories and Parts reviews from real customers.
  • All Info
  • Reviews (15)
  • Q & A (7)
  • Photos
  • Why etrailer?

Demco Accessories and Parts - DM5426

  • Trailer Brakes
  • Hydraulic Drum Brakes
  • Demco
  • Brake Lines
  • Brake Line Kits
  • Single Axle
  • Steel Brake Line

Designed for single-axle trailers, this hydraulic brake line kit includes a 16' steel line, a 17" steel line, a 6-1/2' steel line, an 18-7/8" flexible hose, a 3/16" tee, and hardware required for affixing lines to your trailer.


  • Provides lines and fittings needed to run brake fluid from surge brake actuator to trailer brakes
  • Designed for use on single-axle trailers with drum brakes
  • Includes:
    • (1) 193" Long steel brake line
    • (1) 17" Long steel brake line
    • (1) 80" Long steel brake line
    • (1) Hose bracket
    • (1) Brake line retainer clip
    • (1) 3/16" Brake tee
    • (4) Brake line control clips
    • (1) 18-7/8" Long flexible hose
    • (1) 5/8" Machine bushing
    • (4) #10-16 UNC x 1/2" self-drilling hex washer-head screws
  • Made in the USA

Hydraulic Brake Line Installation for Single Axle Trailers

Demco Single Axle Trailer Brake Line Kit Installation Diagram

1. 193" Long steel line runs from the hydraulic actuator to the trailer axle that has brakes.

2. Brake line clips and screws let you affix the steel lines to your trailer.

3. 18-7/8" Long flexible hose connects the steel line from the actuator to the lines that go to the trailer brakes.

4. 5/8" Machine bushing is used in the connection between the flexible hose and the steel line from the actuator.

5. Hose bracket lets you attach the flexible hose to your trailer.

6. Additional steel lines (17" long and 80" long) run to each trailer brake assembly.

7. Brake line tee connects the flexible hose to the steel lines that run to the brakes.

5426 Demco Trailer Brake Line Kit - Single Axle - Drum Brakes

California residents: click here

Customer Reviews

Demco Hydraulic Brake Line Kit for Single Axle Trailers - Drum Brakes - DM5426

Average Customer Rating:  4.7 out of 5 stars   (15 Customer Reviews)

Designed for single-axle trailers, this hydraulic brake line kit includes a 16' steel line, a 17" steel line, a 6-1/2' steel line, an 18-7/8" flexible hose, a 3/16" tee, and hardware required for affixing lines to your trailer.

- DM5426

I’m very happy with this kit and the price was reasonable. It was just what I needed to replace on my 1985 dual axle ~25’ ez loader boat trailer with surge brakes. I used several cylinder (sm & lg WD40 cans etc..) like objects to help make the bends. First time doing this and am rather pleased how well it turned out! I can’t thank etrailer enough for providing install videos!!!!!

- DM5426

Calling etrailer helped. They got me the right brake kit. Wish they were a tad easier to adjust, buy ya cant have everything.

- DM5426

This was a good product to get me started on replacing the corroding brake system on my 15 year boat trailer. It was not an exact replacement for what I had, but I was able to adapt it to my needs. Brake line was easy to shape with common tools, and avoided the need for me to buy and learn to use a flaring tool.

- DM5426

I just finished putting surge brakes on my boat trailer. It all went very well. All of items fit perfectly, and was quite easy. Everything I needed was included in the shipment.

- DM5426

These guys are the best! Blake was very helpful with all of my questions. My order arrived before it was promised. The parts are perfect. I will definitely continue doing business with etrailer! A very happy customer

- DM5426

I was very pleased with the people at E-Trailer, especialy ricky s.

- DM5426

Easy to install (but did need an adaptor for our master cylinder)

- DM5426

Works fine

- DM5426

Everything came as ordered!

- DM5426

Good product at a good price with fast delivery, Thanx!

- DM5426

Product came on time and looks good. Just have to install.

- DM5426

Product delivered as promised faster than I thought it would be.

- DM5426

this makes it real easy

- DM5426


- DM5426

Good product


Ask the Experts about this Demco Accessories and Parts

  • Troubleshooting Trailer Hydraulic Brakes Locking Up
    It sounds like your husband had to cut a hydraulic brake line to free-up your trailer's locked brakes. Causes for this kind of issue could be anything from a bad master cylinder in your actuator/coupler, to a blockage in one of the brake lines, to damaged/rusted brake assemblies, or to the brake fluid deteriorating. A 12-year-old trailer, even if used gently and stored properly in the off-season, could have by now developed any of the above problems. Trailer brakes should be bled and...
    view full answer...
  • Replacement Brakes System to Upgrade 2006 Sea Doo Boat Trailer
    I'm happy to help with all the parts for your 2006 Sea Doo trailer. I did a little research and it appears it is a single axle trailer, for which I recommend the following parts: -Kodiak Disc Brake Kit - 10" Hub/Rotor - 5 on 4-1/2 - Dacromet - 3,500 lbs # K2HR35D -Kodiak Hydraulic Brake Line Kit - Single Axle - 18' # 18SI-BLKIT -Demco Hydraulic Brake Actuator w/ Electric Lockout - Disc - Zinc - 2" Ball - 6,000 lbs # DM8605101 This combination is what I would use for excellent trailer...
    view full answer...
  • Brake Line Kit Recommendation for Sailboat Trailer with Single Axle
    I would recommend just replacing everything with one of our kits like the # DM5426. This will fit your Demco actuator and will come with everything needed. If one of the lines is in need of replacing chances are the others will soon follow. I attached an install video for this for you to check out as well.
    view full answer...
  • Demco Hydraulic Brake Line Kit # DM5426 for Use on 1993 Calkins Trailer in a Marine Environment
    I have confirmed with my contacts at Demco, that the Demco Hydraulic Brake Line Kit # DM5426 is coated with a galvanized finish. With the additional galvanized finish, it provides the additional corrosion resistance that you are looking for compared to steel brake lines. This brake line kit is also 3/16 of an inch in diameter, and is designed for use on single axle trailers. This kit includes lines and fittings needed to run brake fluid from your surge brake actuator to the trailer...
    view full answer...
  • What is the Difference in the Demco Hydraulic Brake Line Kit Part # DM5427 and Part # DM5426
    The Demco Hydraulic Brake Line Kit for Single Axle Trailers part # DM5427 and Demco Hydraulic Brake Line Kit for Single Axle Trailers part # DM5426 are almost identical. The only exception being one of the steel brake lines in the DM5426 kit is 80" and in the DM5427 kit it is 72". Everything else is identical. Same hoses, lines, keepers, screws and hardware. I have linked a video my buddy Shano did of the kit if you would like to check out how it all works together.
    view full answer...
  • Hub and Drum and Brakes for Trailer With 2,000 lb Axles & Bearings L44649
    Thanks for that great information we have exactly what you need for your 2,000 lb axles. The number you gave of 1.063 inches in diameter where your bearings ride on the spindle corresponds to Bearing # L44649. Knowing that, we can get you the correct hub and drum, which is the Trailer Hub and Drum Assembly - 2K Axles # AKHD-545-2-2K. These hub and drums work with 7" brake assemblies and for hydraulic brakes the correct assembly is the Dexter Hydraulic Trailer Brake Kit # 23-398-399....
    view full answer...
  • Recommendation on Switching from Electric Brakes to Electric Over Hydraulic Brakes
    Mobile home axles were designed as a one time use axle. The spindle of these axles are usually come in odd sizes, making it them incompatible with standard trailer hubs and parts. If any of these part need replacing, then the standard trailer hubs and parts will not work and then you may have to change your axles. However, if you are going to reuse your wheel hubs and if you have a 5 bolt brake flanges on the axles, then we might be able to find the parts needed to convert over to hydraulic...
    view full answer...

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Info for this part was:

Employee Lindsey S
Written by:
Lindsey S
Employee Jeff D
Installed by:
Jeff D
Employee Jameson C
Expert Research:
Jameson C
Employee Adam R
Expert Research:
Adam R
Employee Rachael H
Expert Research:
Rachael H
Employee Laura H
Updated by:
Laura H
Employee Sarah W
Updated by:
Sarah W
Employee Dustin K
Video Edited:
Dustin K

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