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Kodiak Hydraulic Brake Line Kit - Single Axle - 15'

Kodiak Hydraulic Brake Line Kit - Single Axle - 15'

Item # 15SI-BLKIT
Our Price: $100.71
Accessories and Parts
Shipping Weight: 2 lbs
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Kodiak Hydraulic Brake Line Kit - Single Axle - 15' Disc Brakes,Hydraulic Drum Brakes 15SI-BLKIT
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Brake line kit lets you run brake fluid from your surge brake actuator to your trailer brakes. Great for disc brakes and torsion axles. Includes 15', 7', and 1-1/2' flexible hoses with swivel fittings; a tee fitting; and hardware. 1-800-940-8924 to order Kodiak accessories and parts part number 15SI-BLKIT or order online at Free expert support on all Kodiak products. Great prices and Fastest Shipping for Kodiak Hydraulic Brake Line Kit - Single Axle - 15'. Accessories and Parts reviews from real customers.
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  • Reviews (33)
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Kodiak Accessories and Parts - 15SI-BLKIT

  • Brake Actuator
  • Trailer Brakes
  • Disc Brakes
  • Hydraulic Drum Brakes
  • Brake Lines
  • Brake Line Kits
  • Kodiak
  • 15 Feet Long
  • Single Axle
  • Flexible Brake Hose

Brake line kit lets you run brake fluid from your surge brake actuator to your trailer brakes. Great for disc brakes and torsion axles. Includes 15', 7', and 1-1/2' flexible hoses with swivel fittings; a tee fitting; and hardware.


  • Brake hoses and fittings let you run brake fluid from your surge brake actuator to your trailer brakes
    • Designed for use on single-axle trailers with drum or disc brakes
  • Flexible design makes hoses perfect for use with foldaway trailer tongues, disc brakes, and torsion axles
    • Rubber hoses meet DOT and SAE standards and are easier to install than rigid steel lines
  • Brass, male, swivel flare nut fittings on ends of each hose have deep threads
    • Deep threads improve connection to help prevent leaks
    • Swivels allow flare fittings to turn without the hose twisting
  • Open area on flare fittings lets you use a line wrench for better grip
    • Minimizes the risk of stripping threads
    • Fittings are double-crimped onto hoses
  • Corrosion-resistant, brass tee fitting connects 3 hydraulic lines
    • Female inverted flares (FIF) at each port
  • Heavy-duty loom clamps secure hoses to your trailer's frame
  • Kit includes:
    • (1) 15' Long flexible brake line
    • (1) 7' Long flexible brake line
    • (1) 1-1/2' Long flexible brake line
    • 1 Tee fitting
    • (14) 1/2" Loom clamps


  • Hose inner diameter: 1/8"
  • Fitting size: 3/16"
    • Thread size: 3/8"-24
  • 3-Year limited warranty on hoses and fittings

Hydraulic Brake Line Installation for Single-Axle Trailers

Single Axle Brake Line Kit

  • (A) 15' Long flexible brake line (BH-3MFS-15)
  • (B) 7' Long flexible brake line (BH-3MFS-7)
  • (C) 1-1/2' Long flexible brake line (BH-3MFS-1-5)
  • (D) Tee fitting (BH-T-3FIF)
  • (E) Loom clamps (A0500)

Flexible Rubber Brake Hoses

Kodiak brake hoses are made of rubber, making them a practical choice for a variety of applications. Because you can easily bend them, rubber hoses are simpler to work with than rigid stainless steel brake lines. This flexibility makes rubber hoses great for use with foldaway trailer tongues because they are less likely to kink or break when bent. In addition, rubber hoses allow for a wide range of motion so articulating parts can effectively function. These qualities make rubber hoses better suited than steel lines for trailers with torsion axle suspension systems and trailers that have disc brakes.

Stainless steel brake lines have braided exteriors, which can not only wear against exterior surfaces, but also against the interior lining of the hose if dirt gets underneath the steel braid. And if the braid on a stainless steel line tears, it can cut into the hose lining. The exterior surface of these hoses is solid rubber, so there are no crevices for debris to enter.

Durable Fittings with Deep Threads

Kodiak Hose Flare

Kodiak brake hoses have corrosion-resistant brass fittings with stainless steel flares. These fittings have a gap built into them that allows room for a line wrench - also called a flare nut wrench - to slide over the line and down to the nut. This type of wrench grips the nut better than a standard open-ended wrench so there is less chance of stripping the threads as you tighten down the nut.

The stainless steel that is used to create the flares on these hoses is stronger than brass. As a result, these fittings are more durable than ones made entirely of brass. The stainless flares are primarily designed to keep the fittings from splitting when you tighten them down, but they offer absolute rust protection as well.

Kodiak's fittings have deeper threads than many other fittings on the market to provide a higher thread engagement. Deeper threads offer an advantage when used with fittings that have the same thread depth. These Kodiak fittings will work with most fittings on the market, but when they're used with other Kodiak fittings, the result is a stronger connection with fewer leaks.

BH-3MFS-15 Kodiak 1/8" ID Rubber Brake Hose - 3/16" MFFN with Male Swivels - 180"

BH-3MFS-7 Kodiak 1/8" ID Rubber Brake Hose - 3/16" MFFN with Male Swivels - 84"

BH-3MFS-1-5 Kodiak 1/8" ID Rubber Brake Hose - 3/16" MFFN with Dead Swivels - 18"

BH-T-3FIF Kodiak Forged Brass T-Fitting for 1/8" Diameter Brake Hose - 3/16" Female Inverted Flare

A0500 Metal Loom Clamp - 1/2"

Customer Satisfaction Score:

Customer Reviews

Kodiak Hydraulic Brake Line Kit - Single Axle - 15' - 15SI-BLKIT

Average Customer Rating:  4.6 out of 5 stars   (33 Customer Reviews)

Brake line kit lets you run brake fluid from your surge brake actuator to your trailer brakes. Great for disc brakes and torsion axles. Includes 15', 7', and 1-1/2' flexible hoses with swivel fittings; a tee fitting; and hardware.


Relatively easy to install. Have had for a year now with no issues. Would recommend.


I have a 2011 Lund impact 1775 on a Shorelander single axle trailer which tips the scale around 2500# dry. I felt that surge brakes would be a smart investment and take some pressure off my Ford F150 to help stop that beast. I researched kits, actuators, calipers and rotors and decided on the Kodiak caliper and rotor kit and the Titan actuator. eTrailer had both in stock, a convenient hose kit to boot and fair price so I purchased the lot from them. Delivery was very quick and all of the hardware arrived together and in good shape. It took me one afternoon to assemble the actuator on my swing \-away tongue and another to install the calipers and rotors. There was one snag with the hose kit, in that one of the hoses was incorrect. I contacted Bryan at eTrailer and he was very accommodating; rushing the correct hose to me and then following up by phone when I received it. It took about two hours to finish the installation and I couldn't be more pleased, both with the quality of the products and the first-rate service! I have yet to bleed the system and take it out for a run but I don't anticipate any issues. I fully recommend eTrailer, their products and service!

Jeff O.


I want to thank you again for your assistance in getting me the correct parts for my trailer brake installation. I took three major road trips with the boat last year and the trailer brakes worked flawlessly. The major reasons I installed the braking system were: the overall weight of the boat and trailer in relationship to my pickup 2006 F150 and braking performancesafety on wetslick roads. Both of these concerns were tested last year with wonderful results. I have been telling my friends, with similar trailer packages, to investigate your product. Thanks again,


Sheryl offered excellent customer service helping me track down the parts I needed. Smooth transaction and prompt shipping. A+ in all aspects.


Recived the parts for the trailer. Not sure why I didn't get the nuts and washers for the back plate, thought they would come with rest of the brakes, also on the brake line the brass 3 way block was size 3x4x3 and would not fit. Went to [...], they had a 3x4x3 and it works great. The rest of the parts fit Great. Thank you I will be back again. Bob


I added brakes on my boat trailer and these rubber brake lines made the install easy. However, I did have to install all the P clips provided plus a few more to make sure the lines would not chaff against the trailer frame.


I was initially concerned about finding the right parts as the trailer was fairly old. etrailer had just what I needed. The website is so elegant. I was able to find the right parts quickly and with comparative options to make a final selection. The how-to videos are great. This made installation a little more comfortable. Especially when you do not perform this type of work every day. The parts were of high quality and are working as expected. I highly recommend etrailer for any of your trailer needs.


This hose kit worked great with the disc brake kit I added to my new Haulmark trailer. Tip: I have a 6 X 12 v-nose trailer, but needed all of the hose included in this 15' hose kit.


Everything appears to be fine with this package


Received the brake line kit as ordered. It has not been installed as yet. Looks like it will do the job okay. Would have been happier with a 3/16" ID system rather than the 1/8" as supplied.


I am a boat mechanic and I have ordered three complete boat trailer brake kits from E Trailer ...all have arrived quickly and exactly as ordered. Great product.


Excellent product for the money! Parts and pieces were exactly as described and the quality of everything was exceptional through the installation process. Let's hope that continues through the use and life of the product.

Shipping times and customer service were also top notch! Thanks etrailer!


Argued about brake lines, Stainless vs rubber and rubber won base on your sales comments. This is a trailer and not a vehicle where stainless would be better, but car manufacturers use rubber to the wheel.
Good job, but now need warmer weather to get installation done.


a year later brake line kit is holding up well to saltwater use.


If you want knowledgeable staff, competitive prices, prompt delivery and an honest opinion is your place. I am a small business owner for 15 years, and learned a thing or two about quality customer service from the team. Oh and Reesa! She is patient, inquisitive and genuinely wants to be sure your experience is positive!

Keep it up!!


so far so good. item seems heavy enough to handle the forces it will receive on my boat trailer. haven't installed it yet. Arrived fast and in good condition.


Used this kit for a complete rebuild of my salt water trailer. Install was straight forward and although I launch infrequently, everything is working as it should. No problem recommending the product.


Fit perfectly! Not a single leak! Made this job replacing 20 year old brake lines a breeze!


these hoses look good and a smart substitute to steel tube. why mess with the steel when you can get these for a few dollars more? haven't installed them yet. they shipped fast


Great product, exactly what I needed.


etrailer was fast shipping exactly what was needed great price


All of the part fit and work great. I would definitely use them again.

Jamie B.


All parts are still working. Vary happy. Thanks again.




Very good stops my boat well


works as advertised



Fast Shipping.
Great service....
buy again...

Show More Reviews

See what our Experts say about this Kodiak Accessories and Parts

  • Outer Diameter of Brake Line Kit # 15SI-BLKIT
    The outer diameter of the brake line in # 15SI-BLKIT is .411 of an inch or 27/64 of an inch.
    view full answer...
  • Does Kodiak Disc Brake Kit # 15SI-BLKIT Fit with Atwood Surge Coupler Master Cylinder
    Yes, the Kodiak disc brake line kit part # 15SI-BLKIT that you referenced will fit on an Atwood master cylinder you like mentioned.
    view full answer...
  • What Replacement Brake Line do I Need for My Boat Trailer with Hydraulic Brakes?
    Since you have a boat trailer, I am assuming you are looking for hydraulic brake lines. The closest length of line we have is the 10-foot Titan Steel Brake Line Tubing # T1074500. This line is specially designed for hydraulic brakes and comes with copper-plated steel with a ProCoat 2000 finish for greater protection from rust and corrosion.
    view full answer...
  • Are Kodiak Disc Brakes Compatible with A-60 Actuator for Disc Brakes
    Yes, the Kodiak disc brakes will work with an A-60 actuator for disc brakes. If you also need a brake line kit, # 18SI-BLKIT includes an 18 foot line and # 15SI-BLKIT includes 15 foot. Both are for single axle trailers.
    view full answer...
  • Replacement Actuator and Hydraulic Brake Lines for 1989 Escort Boat Trailer
    Yes. As long as you have a 3" wide channel tongue, you can use the Demco Hydraulic Trailer Actuator # DM72VR as a replacement for your current actuator. For new brake lines you'll want to use the Kodiak Hydraulic Brake Line Kit # 18SI-BLKIT which will allow you to replace the brake lines on a trailer up to 18 feet long. There is also a 15 foot kit available with part # 15SI-BLKIT. I don't recommend running them outside of the frame since they could be pinched off quite easily, so we do...
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  • Availability of Retrofit Disc Brake Kit with Surge Coupler for Single 3,500 Pound Axle Trailer
    For a kit with coupler that will allow you to add disc brakes to your trailer you can use the Titan Disc Brake Kit and Leverlock Actuator with Electric Lockout # T4843300. This kit is for single axle trailer with a 3,500 pound axle. Included in the kit are 2 hub and rotor assemblies with L68419 inner bearings and L44649 outer bearings, RG06-050 grease seals, races, bearing protectors, brake calipers with mounting brackets and hardware, brake line kit, and the Titan Zinc-Plated Leverlock...
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  • Are Dacromet and Stainless Brake Finishes Good for Boat Trailers
    Yes, the Dacromet/Stainless finish on the 10" Kodiak Disc Brakes # KOD67FR is arguably the best for boat trailers since it's the most resistant to rust and corrosion, although it's still a good idea to hose down your trailer with clean freshwater once you're done boating for the day. Then for a flexible brake line kit we have part # 15SI-BLKIT which comes with a 15' lead or the part # 18SI-BLKIT which comes with an 18' lead. Attached are some review videos for you to check out!
    view full answer...
  • Are Kodiak Hydraulic Brake Line Kits Compatible With Titan/Dexter Model 10 Surge Brake Actuators?
    Yes, the Kodiak Hydraulic Brake Line Kit # 15SI-BLKIT is compatible with the Titan/Dexter model 10 Surge Brake Actuators for Drum # T2478100 or Disc # T4750600 brake systems.
    view full answer...
  • Replacement Backing Plates and Brake Lines for an EZ Loader Boat Trailer
    Thanks for the photo! I called EZ Loader and they were able to give me the information I needed based on your VIN. In order to replace the backing plates you are going to want to use the Hydraulic Brake Kit part # AKFBBRK-7-D. In order to replace the drums you are going to want to call EZ Loader directly as we do not carry the correct ones for your trailer. However, if you just need the bearings you can use part # LM67048 for both the inner and outer. If you are also looking to replace...
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  • Parts Needed to Convert Roadmaster Tow Dolly From Electric Brakes to Surge Brakes
    The electric brakes on the Roadmaster Tow Dolly # RM-2050-1 can be converted to surge brakes if you'd like. You'll need the brake assemblies, actuator, and brake lines. For the brakes I suggest # AKUBRK-35. This includes both the left and right hand side which are specific. The brakes are labeled so you know which is which. Our most popular brake actuator is the Demco # DM72VR. This fits a 2 inch hitch ball and has a capacity of 6,000 pounds. For a brake line kit I would go with...
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  • Parts Needed to Add 3,500 lb Hydraulic Drum Brakes For Demco Hydraulic Brake Actuator
    We can definitely put together a hydraulic drum brake kit for a 3,500 lb axle that will go with the Demco actuator, and there is indeed a lockout solenoid that is compatible with the actuator. I'll go ahead and make a list of the parts you need to get set up. - Demco Hydraulic Brake Actuator - Drum - Primed - A-Frame - 2" Ball # DM8609502 - Reverse Lockout Solenoid for Demco Hydraulic Brake Actuators # DM11993 - Hydraulic Trailer Brake Kit - Uni-Servo - 10" - Left and Right Hand Assemblies...
    view full answer...
  • Should I Use A Steel Brake Line Kit Or A Rubber Brake Line Kit?
    Though you can definitely go with the all flexible line kits, like the Kodiak Hydraulic Brake Line Kit # 15SI-BLKIT, I do prefer the more traditional steel kits, like the HydraStar Hydraulic Brake Line Kit # HS496-251. I have found the steel line to be a bit easier to mount, especially if there is excess as it can just be coiled up and out of the way, but mostly as they are more durable than their rubber counterparts. Granted, the steel line kits for disc brakes will also use the shorter...
    view full answer...
  • Adding Electric Over Hydraulic Disc Trailer Brakes To a 2017 Triton AUT 1272 Utility Trailer
    I spoke to a Triton trailer representative who informed me that you will have to check your current axle to ensure you have the flange to be able to mount the disc brake caliper for the Kodiak Disc Brake Kit # K2R35D on your 2017 Triton AUT1272 utility trailer. This flange will be a 3" x 3" square with 4 bolt hole located directly behind your idler hub on the spindle. The Titan BrakeRite I Plug and Play Electric-Hydraulic Actuator Kit # T4813102 and Kodiak Hydraulic Brake Line Kit # 15SI-BLKIT...
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  • Will Kodiak Disc Brake Kit K2R1258L12 Fit a 12K Rockwell Axle on PJ Trailer
    I am assuming that one of the axles has brakes and the other does not. If that is the case and the axle that does not have brakes has idler hubs then you can use Kodiak kit # K2R1258L12 provided that the hub has an 8 on 6-1/2 bolt pattern and brake mounting flanges on the axle. You will also need some addition brake line and related parts such as what is included in kit # 15SI-BLKIT. Or it may be more beneficial to go ahead and replace all the lines with a tandem axle kit # HS496-252.
    view full answer...
  • Parts Needed to Convert to 3,500 lb Over-The-Hub Disc Brakes
    Thanks for the photos, and based on them we do have what you need, which are over-the-hub disc brakes. The only thing you will need to verify is that you have a 5 on 4-1/2" bolt pattern on your hub; it looks like you do but you'll want to be sure by measuring from the center of your hub's wheel stud hole to the farthest edge of the opposite stud. If that measures 4-1/2 inches you have a 5 on 4-1/2" bolt pattern. I have also added a link below to a printable bolt hole template. Assuming...
    view full answer...
    Image 1 for Image 2 for Image 3 for
  • How to Add Electric Over Hydraulic Disc Brakes to a Boat Trailer with 3,500 Lb Axle
    I am assuming you are referring to an electric over hydraulic disc brake system? If this is the case then you are going to need the following if you don't already have them which are a brake mounting flange, disc brake assembly, brake line kit, electric over hydraulic actuator, and a breakaway kit. I have attached my recommendations on each of the following parts below. We also have a help article that explains this whole process which I have attached for you. Brake Mounting Flange: part...
    view full answer...
  • Replacement Brake Assemblies, Drums and Brake Lines For a 1993 EZ Loader Adjustable Boat Trailer
    I recommend the Hydraulic Brake Kit # AKFBBRK-35-D for upgrading your original backing plates. This assembly has dacromet coating on the backing plates, stainless steel springs and an aluminum hydraulic cylinder to resist rust and corrosion. And they are free backing to prevent the brakes from locking up when you drive in reverse. These will pair well with the Trailer Hub and Drum Assembly # AKHD-545-35-G-K that are galvanized. The bolts are also zinc coated to prevent corrosion and all...
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  • Replacement Hydraulic Drum Brake System for a Single Axle Magic Tilt Boat Trailer
    Yes, you have done your research well. These parts will fit together and allow you to back up without needing anything else. I can confirm that Demco Hydraulic Brake Actuator item # DM8609101 will work with the Hydraulic Trailer Brake Kit - Uni-Servo - Dacromet - 10" - Left/Right Hand Assemblies - 3.5K item # AKUBRK-35-D. These brake assemblies are compatible with the Easy Grease Trailer Hub/Drum Assembly for 3.5K Axles - 10" Diameter - 5 on 4-1/2 - Galvanized item # AKHD-545-35-G-EZ-K....
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  • Will The Titan Brake Actuator Work With The Hub/Drum Assemblies?
    The Titan Zinc-Plated Brake Actuator # T43397007K is compatible with the Trailer Hub and Drum Assembly - 3,500-lb E-Z Lube Axles - 10" Diameter - 5 on 4-1/2 # AKHD-545-35-EZ-K you mentioned. The only thing you really need to make sure is compatible with your actuator itself is the tongue of your trailer as well as the brake assemblies. These hub/drum assemblies are compatible with either hydraulic or electric brake assemblies. If you will be using these brakes for a marine application,...
    view full answer...
  • Parts Needed for Disc Brake Conversion on 2000-lbs Axle
    In order to determine if a disc brake conversion kit is compatible with your trailer, you will need to know what bearings and seals are currently on your hubs. The Kodiak Disc Brake Kit for 2000-lbs Axles # K2HR2D fits on spindles that use an # L44649 inner and outer bearing, as well as an inner grease seal with a 1.500" diameter and an outer seal with a 1.987" diameter. You'll want to pull your old hubs and check your existing bearings for stamped numbers on the back to verify which bearings...
    view full answer...
  • Replacement Axle with Hydraulic Drum Brakes on a 2,200 Lb Boat Trailer
    I have the perfect replacment trailer axle for your boat trailer. For this, I recommend using the Dexter Trailer Axle part # T20BTR-7258. The Dexter trailer axle measures 72" from the face of each hub and 58" from the center of each spring seat. The measurements you gave are likely the same as what is listed above because the start of each measurement could vary slightly from person to person. The outside diameter of this trailer axle is 1.75" which should be what is on your trailer now....
    view full answer...
  • Hydraulic Drum Brakes and Hubs for the 1,200 lb Timbren Axle-Less Trailer Suspension System
    We actually do have a Timbren Axle-Less Trailer Suspension System rated for 1,200 lbs that comes with a brake flange. It is listed on our site as part # ASR1200S04. With this system you can use the Hydraulic Trailer Brake Kit # AKFBBRK-35 along with the Dexter Trailer Hub and Drum Assembly # 84546UC3-EZ. These are rated for a 3,500 lb axle but will fit on the 1,200 lb axle-less system. If you don't already have brake lines then I also recommend using the Kodiak Hydraulic Brake Line Kit...
    view full answer...
  • Parts Needed to Convert Boat Trailer w/ 10 Inch Electric Drum Brakes To Hydraulic Disc With Oil Hubs
    First you will want to verify exactly what size axle you have but it is most likely a 3,500LB axle. I recommend using a Digital Caliper # PTW80157 to verify the grease seal and bearing landing sizes on your spindle. A typical 3,500lb axle will use a Grease Seal # 58846 (1.719" ID), Inner Bearing # L68149 (1.378" ID) and Outer Bearing # L44649 (1.063" ID). If this is what you have here is a list of all the parts you will need for the hubs, otherwise please let me know your spindle dimensions...
    view full answer...
  • Removing Electric Brake System From Car Dolly and Replacing With a Surge Coupler and Disc Brakes
    If the existing hubs on your dolly use a # L68149 inner and a # L44649 outer bearing and a 10-19 grease seal, the rotors will be compatible. You'll also need to make sure your existing wheels are at least 14 inches in diameter and have a 5 on 4-1/2 inch bolt pattern, the # T2HRCM10DAC hub/rotor assemblies you mentioned would work great. So long story short, if the rotors are compatible with the spindles and wheels are compatible with the rotors, the Titan # T2HRCM10DAC kit will work well...
    view full answer...

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