Kodiak Hydraulic Brake Hose - 3/16" Male Fittings w/ Stainless Flares - 1/8" ID - 18'

Kodiak Hydraulic Brake Hose - 3/16" Male Fittings w/ Stainless Flares - 1/8" ID - 18'

Item # BH-3MFS-18

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Kodiak Brake Lines Accessories and Parts - BH-3MFS-18
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Product Images


  • Trailer Brakes
  • Disc Brakes
  • Hydraulic Drum Brakes
  • Brake Lines
  • Kodiak
  • Brake Line Components
  • 18 Feet Long
  • Flexible Brake Hose
This flexible, rubber brake line acts as part of a trailer's hydraulic braking system. Stainless steel flares, brass fittings, and a high thread engagement help prevent splits, corrosion, and leaks. Includes 2 standard male flare nut fittings. Call 800-298-8924 to order Kodiak accessories and parts part number BH-3MFS-18 or order online at etrailer.com. Free expert support on all Kodiak products. Guaranteed Lowest Price and Fastest Shipping for Kodiak Hydraulic Brake Hose - 3/16" Male Fittings w/ Stainless Flares - 1/8" ID - 18'. Accessories and Parts reviews from real customers.

  • All Info
  • Reviews (15)
  • Q & A (7)
  • Videos (1)
  • Photos
  • Why etrailer?

Kodiak Accessories and Parts - BH-3MFS-18

This flexible, rubber brake line acts as part of a trailer's hydraulic braking system. Stainless steel flares, brass fittings, and a high thread engagement help prevent splits, corrosion, and leaks. Includes 2 standard male flare nut fittings.


  • Brake line connects hydraulic brake actuator to trailer brakes when used with additional lines, tees, and fittings (sold separately)
  • Flexible design makes hose easier to install than a rigid steel brake line
  • Stainless steel flares resist corrosion and are stronger than brass to reduce splitting
    • Ideal for boat trailers
  • Deep threads improve connection to help prevent leaks
  • Rubber hose meets DOT and SAE standards
  • Brass, male swivel flare nut fittings on both ends
    • Swivels allow flare fittings to turn without the hose twisting
  • Double-crimped brass ferrules securely clamp fittings to hose
  • Open area on flare fittings lets you use a line wrench for better grip
    • Minimizes the risk of stripping threads


  • Hose length: 18'
    • With fittings: 18' 3"
  • Hose inner diameter: 1/8"
  • Fitting size: 3/16"
    • Thread size: 3/8"-24
  • 3-Year limited warranty

Flexible Rubber Brake Hose

This Kodiak brake hose is made of rubber, making it a practical choice for a variety of applications. Because you can easily bend it, a rubber hose is simpler to work with than a rigid stainless steel brake line. This flexibility makes a rubber hose great for use with foldaway trailer tongues because it is 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 this hose 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 this hose 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-216 Kodiak 1/8" ID Rubber Brake Hose - 3/16" MFFN with Male Swivels - 216"

Video of Kodiak Hydraulic Brake Hose - 3/16" Male Fittings w/ Stainless Flares - 1/8" ID - 18'

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

Video Transcript for Kodiak Trailer Brakes BH-3MFS-18 Review

Today we're going to take a look at the Kodiak, 18-foot-long DOT hydraulic brake hose, with these stainless steel flares and the 3/16ths brass male fittings. This brake line will connect your hydraulic brake actuator to your trailer brakes when used with additional lines, Ts and fittings that we do sell separately on our website. This is a flexible design. Makes the hose perfect for use with fold-away trailer tongues, disk brakes, and torsion axles, and easier to install than a rigid, steel brake line. The stainless steel flares on the ends here help resist corrosion, are stronger than brass to reduce splitting. It's ideal for boat trailers. The brass male swivel flare-nut fittings on both ends, they swivel to allow the flare fittings to turn without the hose twisting, and they use deep threads on them to improve the connection to help prevent any leaks. If you notice the open area right here on the flare fittings, this will let you use a line wrench for a better grip, minimize the risk of stripping any threads.

Then the brass ferrules right here are double-crimped to securely clamp the fittings to the hose. This rubber hose does meet the DOT and SAE standards. Now, the hose length from tip-to-tip, including the fittings, is 18 feet. The hose inner-diameter is 1/8th of an inch. The fitting size is 3/16ths of an inch, and the thread size on the fitting is 3/8ths by 24 threads per inch. That should do it for the review on the Kodiak 18-foot DOT hydraulic brake hose with stainless steel flares and 3/16ths-inch brass male fittings.

Customer Reviews

Kodiak Hydraulic Brake Hose - 3/16" Male Fittings w/ Stainless Flares - 1/8" ID - 18' - BH-3MFS-18

Average Customer Rating:  5.0 out of 5 stars   (15 Customer Reviews)

This flexible, rubber brake line acts as part of a trailer's hydraulic braking system. Stainless steel flares, brass fittings, and a high thread engagement help prevent splits, corrosion, and leaks. Includes 2 standard male flare nut fittings.

- bh-3mfs-18

Very happy with the knowledgeable support team. They quickly determined the correct parts to order for my trailer brakes. Received the parts faster than expected. No additional parts were needed. A big thanks to them. 664731

- bh-3mfs-18

Was the only place I could find a long enough cable. Great Price and came fast! Definitely recommend purchasing from them!!!!! 607692

- bh-3mfs-18

Came fast and was best price! 605494

- bh-3mfs-18

The shipment was extremely quick and the product (brake line) was very high quality. Unfortunately, the length was about 2ft too short, so I'll be looking on etrailer this morning to see if I can find something a little longer. I appreciate the follow-up email. Great company, and great service! 578408


Thanks for the follow up, we do have other brake lines available in other lengths. For example # BH-3MFS-20 is 20 feet long.

-- Rachael H - 11/29/2018


- bh-3mfs-18

Lori was a big help in my purchase of this hose. I replaced one hose and the metal brake line that ran from the actuator to the rear "T" fitting on my Ellis boat trailer. 520496

- bh-3mfs-18

Perfect fit , quality part . Thank you 478381

- bh-3mfs-18

Same size and fittings as my 2003 karavan. I couldn't be happier with my purchase. thank you etrailer!!! 404143

- bh-3mfs-18

good products 396045

- bh-3mfs-18

Hose worked great! Used it to replace a steel line after installing a folding boat trailer tongue. 369154

- bh-3mfs-18


- bh-3mfs-18

This was the only place I found what I needed. Fast shipping. 274792

- bh-3mfs-18

Needed to replace brake hose on boat trailer. This one was offered at a great price and was the same as what was originally on trailer. It's been installed on trailer for a couple of weeks now and works perfectly 273793

- BH-3MFS-18

it fit like a glove ...thanks for the fast shipping 216891

- BH-3MFS-18

Exactly the line I needed to replace what I had on my dual axle disc brake trailer. Very fast shipping and great customer service. I will buy all my trailer parts from here from now on. 205887

- BH-3MFS-18

As adverstised, good product, price, and fast delivery. A third of the price of an OEM replacement. Thank you! 145819


Ask the Experts about this Kodiak Accessories and Parts
Do you have a question about this Accessories and Part?

  • How to Install a Fold-Away Coupler Hinge Kit on a Trailer with Surge Brakes
  • In order to install a Fulton Fold-Away Coupler Hinge Kit like part # FHDPB230101 on a trailer with surge brakes you are going to want to use a flexible brake line that runs from the actuator to the t-fitting just before it splits to each braking assembly. This hose can been seen as letter A in the attached photo. The hose can actually be ran through the frame rail you will just need to make sure you have enough slack so it does not put too much tension on the line when the tongue is in...
    view full answer...

  • How To Manage Excess Hydraulic Brake Hose Length on Boat Trailer
  • Thanks for the photos of your trailer! To manage the excess length of the Kodiak Hydraulic Brake Hose # bh-3mgs-18 you can certainly coil up the excess and secure it with a zip tie. Another option is to route the hose along the trailer so that the excess line is used. However you choose to secure the excess hose, keep in mind that you will want to ensure that the hose does not hang down below the trailer's frame. If you find that a shorter amount of hose can be used, Kodiak also offers...
    view full answer...

  • Availability of Rubber Brake Line for 22 foot Continental Boat Trailer
  • We have rubber brake lines that will work but I don't know exactly what length you need so we have a few options you will need to consider. Part # BH-3MFS-20 is 20 feet long, part # BH-3MFS-24 is 24 feet long, and # BH-3MFS-18 is 18 feet long.
    view full answer...

  • Will Kodiak Hydraulic Brake Hose Work On Trailer
  • The Kodiak Hydraulic Brake Hose w/ Stainless Flares, part # BH-3MFS-18, you referenced has the standard 3/16 inch male fittings and 3/8 inch thread size so this should work fine for you. From the looks of the photo you sent, the brass coupler being used appears to fit a standard size brake line.
    view full answer...

  • Replacement Brake Line For 1999 Trailer For Larson 233 Escape Boat
  • The best way to find a brake line that will work for your trailer is to take a quick measurement. You will want to measure from the actuator at the front of your trailer back to the Tee for the brake lines running to the brakes. From my research I saw that the Larson 233 boats were all on tandem trailers. I have attached a link to the brake lines product page we offer. You can select a line that best matches the length of the line you are wanting to replace or you can go with an easier...
    view full answer...

  • Shorter Brake Line Recommendation than Kodiak Hydraulic Brake Hose BH-3MFS-20
  • We have the 7 foot section part # BH-3MFS-7 which is the shorter version of the # BH-3MFS-20 that you referenced. Or for just slightly shorter we have the 18 foot long section part # BH-3MFS-18.
    view full answer...

  • Could Kodiak Flexible Brake Lines be Used on a Truck
  • Normally trailer brake lines are only used on trailers. However, if your vehicle has brake line fittings that match what the part # BH-3MFS-18 has and the psi of the system does not exceed 1,600 psi this line could work for you. The line has an inner diameter of 1/8 inch, the fitting size is 3/16 and the thread size is 3/8-24. Since I do not know any info on your truck it would be hard for me to know if what you have would match up.
    view full answer...

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Info for this part was:

Edited by:
Lindsey S
Installed by:
Jeff D
Expert Research:
Jameson C
Updated by:
Adele M
Photos by:
Jim W
Written by:
Lisa S
Updated by:
Sarah W
Expert Research:
Victoria B

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