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Hydrastar Hydraulic Brake Line Kit - Triple Axle - 15' Long, 1/4" Main Line

Hydrastar Hydraulic Brake Line Kit - Triple Axle - 15' Long, 1/4" Main Line

Item # HS496-153
Our Price: $254.31
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Shipping Weight: 5 lbs
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Thick, durable brake line kit lets you run brake fluid from your brake actuator to your trailer brakes. Ideal for trailers with disc brakes. Includes 15', 6', and 4-1/4' brake lines, 3/16" flex lines, plus fittings and hardware. 1-800-940-8924 to order Hydrastar accessories and parts part number HS496-153 or order online at Free expert support on all Hydrastar products. Great prices and Fastest Shipping for Hydrastar Hydraulic Brake Line Kit - Triple Axle - 15' Long, 1/4" Main Line. Accessories and Parts reviews from real customers.
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  • Reviews (5)
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Hydrastar Accessories and Parts - HS496-153

  • Trailer Brakes
  • Hydraulic Drum Brakes
  • Disc Brakes
  • Brake Lines
  • Brake Line Kits
  • Hydrastar
  • 15 Feet Long
  • Steel Line and Flexible Hose
  • Triple Axle

Thick, durable brake line kit lets you run brake fluid from your brake actuator to your trailer brakes. Ideal for trailers with disc brakes. Includes 15', 6', and 4-1/4' brake lines, 3/16" flex lines, plus fittings and hardware.


  • Brake lines and fittings let you run brake fluid from your brake actuator to your trailer brakes
    • Designed for use on triple-axle trailers with drum or disc brakes
  • Durable, corrosion-resistant copper-nickel alloy lines
  • Flexible and kink-proof design is great for foldaway trailer tongues
    • More economical and easier to install than rigid steel lines
  • 1/4" Diameter main line is wider than standard brake lines so fluid can move faster for more consistent braking
  • Thicker walls compared with standard steel brake line kits provide additional strength and durability
  • Rubber flex lines are perfect for disc brakes and torsion axles
  • Brass, male, double-flare nut fittings on ends of each hose
  • Corrosion-resistant, brass tee fitting connects 3 hydraulic lines
    • Female inverted flares (FIF) at each port
  • Heavy-duty hose clamps secure hoses to your trailer's frame
  • DOT compliant
  • Kit includes:
    • (1) 15' Long brake line with 7/16"-24 inverted flare nuts
    • (1) 6' Long brake line with 3/8"-24 inverted flare nuts
    • (4) 4-1/4' Long brake lines with 3/8"-24 inverted flare nuts
    • (6) 18" Male/male rubber flex lines
    • (3) 3/16" Brass, round T-fitting
    • (2) 3/16" Brass union fitting
    • (1) 3/16" Brass, round X-fitting
    • (1) 3/16" to 1/4" Brake line adapter
    • (1) 1/4" to 3/16" Step-down adapter
    • 1/2" Nylon hose clamps
    • 3/16" Nylon hose clamps
    • 1/4" Nylon hose clamps
    • Self-tapping screws


  • Main line inner diameter: 1/4"
  • Fitting sizes: 3/16" and 7/16"
  • Lifetime warranty

496-153 Hydra Star Hydraulic Brake Line Kit - Tri Axle - 15' - 3/16" - Model BL-15TA

Video of Hydrastar Hydraulic Brake Line Kit - Triple Axle - 15' Long, 1/4" Main Line

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

Video Transcript for HydraStar Hydraulic Brake Line Kit Review

Hi there trailer owners. Today we're going to be taking a look at HydraStar's line of hydraulic brake line kits. If your trailer currently has hydraulic brakes or if you're going to go with the adventure of taking your trailer and converting it from electric brakes to electric over hydraulic, this is going to be a great kit for your trailer. We've got a lot of different options for the size. You can get them in either 15 or 25 foot lengths, and they're available in single, tandem, or triple axle kits that comes with everything you need to get those installed.All of these components are going to be heavy-duty upgraded components. The steel lines are going to have thicker walls than your standard hydraulic brake line, and our flexible lines are also a very high quality durable grade.

All of these need to be heavy-duty because when you go from an electric system to an electric over hydraulic, when switching to disc brakes, you need a much higher pressure applied to the brakes in order for them to stop. We're using a 1600 PSI actuator from HydraStar to deliver that pressure. If you had a hydraulic drum brake system, those don't require as much pressure and you can get away with lower operating systems such as like a 1200 PSI actuator from HydraStar. But, again, with these discs, we need that higher pressure. So we want to make sure we've got a heavy-duty line kit that's going to be capable of accepting those pressures.All of our lines and hoses are going to have a double flare fitting, which is going to give us proper sealing for such extreme pressures.

All of our fittings here are going to be constructed of a brass to ensure that they are corrosion free. This is also a softer material that allows it to seal up when tightened down.On our particular trailer here, we just recently installed the triple axle kit. We're going to talk about what you're going to receive in the various kits. All of the kits are going to receive a main line that comes in. It's going to go from your actuator at the front and goes to your first axle here at the back.

From this point, this is where your kits do vary slightly. If you've got a single axle kit, what you would have here at the back would be a three-way fitting. This one here's a four-way, so let's shoot back one axle and we'll show you what a three-way looks like. And on your single kits, your main line would go in to the center or just to one of these, and then you, essentially, would connect your hydraulic hose to one. You'd have a line of shoot across to the other side and a union that would connect to your brake hoses.

The single kits are going to come with two brake hoses because you only have one axle, one for each side for our tandem kits.For our tandem kits, the story's going to be the same at the beginning. We're going to have that main line coming in, whether it's 25 or 15 foot, and with the tandem kits, it's going to go to a four-way that looks similar to this here. So where it goes in, you're going to have a crossline that's going to be a little bit longer than the shortest lines, it's going to be the medium line that comes in the kit. That's going to allow you to go across and then you'll receive two short lines that will go from your front axle to the rear axle. One for each side. You'll get four brake hoses to go from your four-way to your caliper.We shoot over to the other side, your crossline would come in one. It would go to a three-way, which would give you your connection point for your hose, and then you would have another short line that would go back to your rear axle. On the rear axle for your tandem axle kits, both of them will connect to a union and then go to a flexible brake hose that goes to your rear axle. Now, regardless of the kits, the size of your lines are basically going to be the same. Our main again's going to be 25 or 15. Our crossline, if you have one of the kit's, going to be six foot, and if you have lines that go from one axle to the other, those are going to be four and a half foot in length.Also included with your kit, you're going to receive some hardware to help you get the lines routed. You'll receive some small plastic clamps with self-tapping screws so you can run these into crossbeams and down the frame as you're routing your lines. It's important that those are secure because if they have too much flex, if you've got a bunch of bouncing going on, it will eventually break the metal line. If you've ever had a spoon and bent it back and forth, eventually it breaks. It can be similar if you're bending steel that way. You'll also receive some larger clamps for your flexible hoses to go around those to hold those in place, and that just helps to prevent movement in the small solid metal section right here where it's out. We want the movement to happen on the flexible portion. And that completes our look at HydraStar's line of hydraulic brake line kits.

Customer Satisfaction Score:

Customer Reviews

Hydrastar Hydraulic Brake Line Kit - Triple Axle - 15' Long, 1/4" Main Line - HS496-153

Average Customer Rating:  5.0 out of 5 stars   (5 Customer Reviews)

Thick, durable brake line kit lets you run brake fluid from your brake actuator to your trailer brakes. Ideal for trailers with disc brakes. Includes 15', 6', and 4-1/4' brake lines, 3/16" flex lines, plus fittings and hardware.



No issues at all . System work great and I like the conversion . Theses where actually the first set I installed here at my shop and have since done 3 more and soon to do another . I will continue to shop and purchase with etrailer
William - 05/07/2019






See what our Experts say about this Hydrastar Accessories and Parts

  • Triple Axle Brake Line Kit that Uses 1/4 inch Main Feed Line
    Having the slightly larger main feed line of 1/4 inch is a a great idea for plumbing up your triple axle trailer. We have the HydraStar kit part # HS496-153 which is designed for that. This kit uses 1/4 for the main feed line to the first tee fitting and then from there reduces to the smaller 3/16 inch size but this kit was designed for heavier trailers like yours so it will still work really well and you won't have any issues with brake performance. I attached a diagram that shows how...
    view full answer...
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  • Disc Brake Kit Needed for a 2015 Cyclone 4200 with Triple Dexter Axles
    I reached out to my contact at Dexter Axle who gave me the spindle information for your specific axle. The compatible disc brake kit that I recommend going with is part # K2HR712D from Kodiak. My contact did mention that this axle originally came with electric brakes so you will need a brake line kit as well since it sounds like you already have an actuator. I have linked our available brake line kits. All you have to do is filter through the selection for the best fit for your trailer...
    view full answer...
  • Best Triple Axle Disc Brake Kit for 3,500 lb Axles Converting to Electric Over Hydraulic
    We can help you get setup with all of the parts needed to add electric over hydraulic disk brakes to your trailer that has a triple 3,500 Dexter axle setup but we don't have it all in one single kit. The first thing you'll want is the part # HS381-9067 which comes with the best actuator out there the Hydrastar and all of the electrical components you'd need as well. Then for the brakes you'd need three sets of the part # K2HR35DKG and for the brake lines part # HS496-153 and you'd be...
    view full answer...
  • Converting Electric Brakes To Electric Over Hydraulic Disc Brakes On Triple Axle Trailer
    Yes, we have the HydraStar Hydraulic Brake Line Kit - Triple Axle - 15' Long, 1/4" Main Line, # HS496-153. We also have a 25 foot long kit, # HS496-253. With either kit, I recommend use with the HydraStar Vented Electric Over Hydraulic Actuator for Disc Brakes - 1,600 psi, # HBA16. This will convert the electric system over to a hydraulic system with the electric motor that pushes the plunger into the hydraulic master cylinder as you brake. I assume you have 3500 lb axles, and if...
    view full answer...
  • Recommended Way to Add Disc Brakes to 2020 Momentum 376THS
    The first thing you'd want is the Kodiak Disc Brake Kit # K2HR79E for each axle. This is a 7k kit with an oil bath dust cover that fits your current spindles and also is compatible with your wheel size. For bearings you'd need to order the # 25580 and # 02475 separately as well as the seal # 10-63 as they are not included. Since you have a triple axle trailer you'd need three of the disc brake kits and 6 each of the bearings and seals. For an actuator kit the best option is the Hydrastar...
    view full answer...

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Info for this part was:

Employee Jeff D
Installed by:
Jeff D
Employee David F
Installed by:
David F
Employee Joshua S
Video Edited:
Joshua S
Employee Laura H
Updated by:
Laura H
Employee Wilson B
Updated by:
Wilson B
Employee Manda E
Updated by:
Manda E
Employee Dustin K
Video by:
Dustin K
Employee Leah S
Edited by:
Leah S
Employee Amanda M
Written by:
Amanda M

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