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  1. Trailer Brakes
  2. Dexter
  3. Hydraulic Drum Brakes
  4. 2500 lbs Axle
  5. 7 x 1-3/4 Inch Drum
  6. 10 Inch Wheel
  7. 12 Inch Wheel
  8. 13 Inch Wheel
Dexter Hydraulic Trailer Brake Kit - Uni-Servo - 7" - Left and Right Hand Assemblies - 2.5K

Dexter Hydraulic Trailer Brake Kit - Uni-Servo - 7" - Left and Right Hand Assemblies - 2.5K

Item # 23-398-399
Our Price: $198.62
Trailer Brakes
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Dexter Hydraulic Drum Brakes - 23-398-399
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7" x 1-3/4" Driver's-side and passenger's-side hydraulic trailer brake assemblies feature a single-plunger design. Mounting flanges have a 4-bolt pattern. Fit 10" to 13" wheels. Great Prices for the best trailer brakes from Dexter. Dexter Hydraulic Trailer Brake Kit - Uni-Servo - 7" - Left and Right Hand Assemblies - 2.5K part number 23-398-399 can be ordered online at etrailer.com or call 1-800-940-8924 for expert service.
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  • Reviews (47)
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  • Videos (1)
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Dexter Trailer Brakes - 23-398-399

  • Hydraulic Drum Brakes
  • 2500 lbs Axle
  • 7 x 1-3/4 Inch Drum
  • 10 Inch Wheel
  • 12 Inch Wheel
  • 13 Inch Wheel
  • Standard Grade
  • Manual Adjust
  • Single Servo
  • Dexter

7" x 1-3/4" Driver's-side and passenger's-side hydraulic trailer brake assemblies feature a single-plunger design. Mounting flanges have a 4-bolt pattern. Fit 10" to 13" wheels.


Features:

  • Hydraulic drum brake assemblies are designed for use with a surge-type trailer brake actuator
  • Periodic manual adjustment required
  • Adjuster plugs (included) cover access holes to keep dirt and grime out of the assemblies and off of the shoes
  • Left-hand (driver's-side) brake assembly, right-hand (passenger's-side) brake assembly, mounting bolts, and nuts included
  • Made in the USA


Specs:

  • Dimensions: 7" diameter x 1-3/4" wide
  • Mounting flange bolt pattern: 4 bolt
  • Wheel size: 10", 12", and 13"
  • Axle rating: up to 2,500 lbs


23-398 Dexter 7" Single Servo Hydraulic Brake Assembly - LH - 2.5K

23-399 Dexter 7" Single Servo Hydraulic Brake Assembly - RH - 2.5K





Video of Dexter Hydraulic Trailer Brake Kit - Uni-Servo - 7" - Left and Right Hand Assemblies - 2.5K

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




Video Transcript for Dexter Axle Trailer Brakes - Hydraulic Drum Brakes - 23-398-399 Review

Male speaker: Today, we're gonna take a look at the Dexter 7-inch hydraulic trailer brake kit, with the left- and right-hand brake assemblies for 2500-pound axles. Now, hydraulic drum brake assemblies are designed to use with surge-type trailer brake actuators. These assemblies are manual adjustment brakes, so they do require a periodic manual adjustment. Right down here is your adjustment gear, where you'd adjust them. On the backing plate, there's an access hole at the bottom that you put your tool through to do your adjustment. What's nice on these brakes, if you notice, they have an adjuster plug that goes in there when you're not using it, so that hole's covered up.

It keeps any dirt and grime from getting into your brake assembly and off your brake shoes. This part number will include both the left-hand driver's side, right-hand passenger's side brake assemblies. You can notice all the mounting nuts are included to install it. The dimensions on these assemblies is 7-inch diameter by 1 3/4-inches wide, and the size on that, the 7 inches of diameter would be from this shoe all the way over to that shoe. So if we put the ruler on, there's your 7-inch diameter. The 1 3/4-inch width would be the width of the pad on the shoe.

There's the 1 3/4 inches. If you notice on the back, there's the four bolts. That's the mounting flange bolt pattern, is a four-bolt mounting flange, and again, there's your nuts that you'd install them with. Now, these assemblies do require the use of a 7-inch brake drum. The wheel size that'll fit on these is 10-inch, 12-inch, and 13-inch.

Again, these are designed for axles rated up to 2500 pounds. The last thing I wanted to show you is, how to tell the difference between the left-hand driver's side and right-hand passenger's side. On a new assembly of course, there'll be a sticker that'll tell you that, but if that sticker wasn't there, the easiest way to tell is you look at the length of the pad on the shoes. So this pad goes from here to here, this one's from here to here. This is a shorter pad, that's the longer pad. Shorter pad always faces the front of the trailer.

It tells you that this is the right-hand passenger's side assembly. If you go over to the other one, the pad goes from here to here. This one's from here to here. This is the shorter pad, this is the longer pad. Shorter one faces the front of the trailer. This is the left-hand driver's side assembly. That should do it for the review on the Dexter 7-inch hydraulic trailer brake kit with left- and right-hand brake assemblies for 2500-pound axles.

Customer Satisfaction Score:


Customer Reviews

Dexter Hydraulic Trailer Brake Kit - Uni-Servo - 7" - Left and Right Hand Assemblies - 2.5K - 23-398-399

Average Customer Rating:  4.6 out of 5 stars   (47 Customer Reviews)

7" x 1-3/4" Driver's-side and passenger's-side hydraulic trailer brake assemblies feature a single-plunger design. Mounting flanges have a 4-bolt pattern. Fit 10" to 13" wheels.

by:

Fit like a glove...thanks.

David

4/21/2024

Still going strong after a years use.



by:

My trailer brakes were sticking on sometimes, at lest one wheel cylinder was leaking. Replaced all 4 brake assemblies. They fit perfect and work great.



by:

I just recently ordered my parts, so I haven’t received them yet. However, I would like to shout out a job well done by Josh B, I called and he walked me through step by step to ensure that I ordered the right parts. A+ costumer service. You have a repeat costumer.



by:

Product was delivered in a timely manner and the quality looks great! thank you!



by:

Parts as expected



by:

I just received these breaks and have not had a chance to install them yet. etrailer was very helpful with returning of the wrong breaks and shipping the ones I need.The new order was very fast,looking forward to be installing them soon.

Richard

1/25/2023

Brakes have been working very well,no problems.I would recommend etrailer for your trailer needs.



by:

Can't ask for anything better, customer service on phone was very helpful and polite,parts came even sooner than expected, can't ask for anything more.



by:

The customer service technician helped me and was extremely professional! I was very appreciative for his knowledge. Highly recommend!



by:

The shipping was fast and the parts fit just like new ones.



by:

Their on time delivery was really Excellent ! I’m in gratitude to setup Hydraulic brakes to keep my load in order and safe from twisting. They exceeded the mark on ‘Prompt delivery’. However, I had to get the right spindle from another reseller; check that ‘a/16 is greater than road tolerance.

Emanuel

4/26/2022

Seems like it was worth it. The installation took good care of providing an axle for the long distance.



by:

The replacement brakes were used on a pontoon boat trailer. Installation was fairly simple. The only problem encountered was difficulty bleeding the brake lines due to tight spacing between the new brake bleeder and the existing flexible brake line. Brakes work great .



by:

fast shipping !!! excellent product!!



by:

Bought these for my snowmobile trailer. The studs lined up perfectly onto the brake plates. However, no lock washers were included, and the nuts were not locknuts. Further, when I added lockwashers the studs were too short and did not protrude beyond the tightened nut but instead were short by over 1/16 inch. Should work ok, but not ideal. Finally, the bleeder valves needed a 10mm socket or wrench, but the cap screw and the brake line were too close to allow access with either a socket or a wrench. Had to change them to bleeder valves with an 8 mm head.



by:

Hoping these are the correct size. Not installed yet!



by:

parts fit as expected and are of a good visual quality. made installation of rebuilt trailers a breeze

Dave

3/2/2020

Trailers are going strong no issues at all with the parts



by:

The item was just as described and was delivered fast.The fitment was perfect.



by:

After trailing for a year, I have found real peace of mind. The brakes work perfect in the city and on long trips through the mountains. No more sliding through red lights. I am trailing a 21' pontoon boat.tandum axle. I highly recommend.



by:

Everything works as it should, shoes move freely, nothing is binding, and it slid right into place of the old assembly. The brake line inlet is at a slight angle as opposed to straight in like my old one. Wasn’t a huge ordeal, but I did have reroute one of my lines to the other side of the axle.



by:

Parts were exactly as I ordered, and came with good instructions. I will definitely use etrailer for any future towing needs.



by:

Seem well built bolted up nice. Would of liked some lock washers with the kit but I had some laying around. Installed quick.



by:

Everything was delivered in 2 days during covid 19 lock down. I got exactly what I ordered and happy about the free shipping.
Customer service Was great and Alex went out of his way to find exactly what I need and also made other options that he thought would be best for my situation.



by:

All parts fit great and delivered promptly . Hard to find 7” trailer brakes but they have a good selection of all sizes



by:

Perfect replacement for worn out parts.



by:

Great product, easy installation, no is sues.



by:

Very Pleased

Brad

9/29/2021

Quite happy

Brad

9/29/2021

Very pleased. Good decision


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Info for this part was:

Employee Mike L
Expert Research:
Mike L
Employee Jameson C
Expert Research:
Jameson C
Employee Lindsey S
Edited by:
Lindsey S
Employee Jeff D
Installed by:
Jeff D
Employee Wilson B
Updated by:
Wilson B
Employee Alexander C
Written by:
Alexander C

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