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22' Line is perfect for use as the main line in your trailer's hydraulic brake system. Brass fittings won't rust and are easier to work with than stainless steel.
Features:
Specs:
Videos are provided as a guide only. Refer to manufacturer installation instructions and specs for complete information.
Hello, everybody, this is Jeff at etrailer.com. Today, I'm gonna take a look at the DeeMaxx 21 foot eight-inch-long Rubber Hydraulic Brake Line with the 3/16 inch brass male inverted flares. Now, this brake line will act as part of a hydraulic brake system. Does require additional lines and fittings that we do sell separately. Now, this line here is typically as a main line. It runs down the center of the trailer.
The hose length we mentioned is 260 inches, which translates into 21 feet eight inches. This is a flexible construction, so it's perfect for foldaway trailer tongues, disc brakes, and torsion axles, and we mentioned the ends, they have the brass male inverted flare fittings on both ends. The fitting size is 3/16 of an inch. The thread size on 'em is 3/8 inch by 24. Now, these brass ends make better seal than the steel fittings because the brass is more pliable.
This does help prevent leaks, splits and corrosion. The rubber hose itself does meet the DOT, Department of Transportation and SAE standards, and the inner diameter on this hose is 1/8 of an inch. But that should do it for a look at the DeeMaxx 21 foot eight-inch-long Rubber Hydraulic Brake Line with the 3/16 inch brass male inverted flares.
Customer Satisfaction Score:
97% were satisfied with this product
3% of customers were not satisfied
Ratings & Reviews
Lazer S.
3/10/2026
I think you may have received either a damaged one (which you did mention) or a defective one, Andrew. I just grabbed two of these at random from our warehouse and test fit them in three different parts and they fit fine. If you would like, I can get a reshipment moving for you so we can get you one that I know fits. And out of curiosity, what are you putting this in? The brake, the actuator, or an adapter/t-fitting?
Info for this part was:
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Kate F.
6/5/2026
Thanks for your review, Evan! It sounds like the installation had a bit of a learning curve, but we're glad you took the time to get everything routed and set up correctly. It's great to hear the DeeMaxx kit delivered the stopping power you were looking for, especially with your truck and 5th wheel combination. Thanks for including the photos as well. They'll be a valuable resource for other customers considering a similar upgrade. What trip are you looking most forward to this summer?