1. Trailer Brakes
  2. Dexter Axle
  3. Hydraulic Drum Brakes
  4. 8000 lbs Axle
  5. 12-1/4 x 3-3/8 Inch Drum
  6. 16 Inch Wheel
  7. 16-1/2 Inch Wheel
  8. 17 Inch Wheel
  9. 17-1/2 Inch Wheel
Dexter Hydraulic Drum Brake Kit - Duo Servo - 12-1/4" - Left and Right Hand Assemblies - 8K

Dexter Hydraulic Drum Brake Kit - Duo Servo - 12-1/4" - Left and Right Hand Assemblies - 8K

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Our Price: $675.99
Trailer Brakes
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Dexter Axle Trailer Brakes - 23-402-403
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12-1/4" x 3-3/8" Driver's-side and passenger's-side hydraulic trailer brakes have a dual-plunger design. Mounting flanges have a 4-bolt pattern. Self-adjusting brakes require little maintenance. Fit 16" or larger wheels. Lowest Prices for the best trailer brakes from Dexter Axle. Dexter Hydraulic Drum Brake Kit - Duo Servo - 12-1/4" - Left and Right Hand Assemblies - 8K part number 23-402-403 can be ordered online at etrailer.com or call 800-298-1624 for expert service.
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  • Reviews (8)
  • Q & A (3)
  • Videos (1)
  • Photos
  • Why etrailer?

Dexter Axle Trailer Brakes

  • Hydraulic Drum Brakes
  • 8000 lbs Axle
  • 12-1/4 x 3-3/8 Inch Drum
  • 16 Inch Wheel
  • 16-1/2 Inch Wheel
  • 17 Inch Wheel
  • 17-1/2 Inch Wheel
  • Dual Servo
  • Brake Set
  • Dexter Axle

12-1/4" x 3-3/8" Driver's-side and passenger's-side hydraulic trailer brakes have a dual-plunger design. Mounting flanges have a 4-bolt pattern. Self-adjusting brakes require little maintenance. Fit 16" or larger wheels.


Features:

  • Hydraulic drum brake assemblies are designed for use with a surge-type trailer brake actuator
  • Dual-plunger design delivers same amount of braking when driving either forward or in reverse
  • Self-adjusting brakes automatically adjust to deliver optimum performance and braking power
    • No need for manual brake adjustments
    • Proper adjustment leads to better brake efficiency and less wear on your tow vehicle's brakes
  • Left-hand (driver's-side) brake assembly and right-hand (passenger's-side) brake assembly included
    • Mounting bolts and hardware sold separately
  • Made in the USA


Specs:

  • Dimensions: 12-1/4" diameter x 3-3/8" wide
  • Mounting flange bolt pattern: 4 bolt
  • Wheel size: 16" or larger
  • Axle rating: 8,000 lbs


23-402 Dexter 12-1/4" Duo-Servo Hydraulic Brake Assembly - LH - Self Adjust - 8K

23-403 Dexter 12-1/4" Duo-Servo Hydraulic Brake Assembly - RH - Self Adjust - 8K

Item # 23-402-403





Video of Dexter Hydraulic Drum Brake Kit - Duo Servo - 12-1/4" - Left and Right Hand Assemblies - 8K

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




Video Transcript for Review of Dexter Axle Trailer Brakes - Hydraulic Drum Brake Kit - 23-402-403

Jeff: Hello, everybody. This is Jeff at etrailer.com. Today, we're going to take a look at the Dexter 12-1/4" left-hand and right-hand side self-adjusting hydraulic drum brake assemblies for 8000-pound axles. Now, these hydraulic drum brake assemblies are designed for use with surge-type trailer brake actuators. These assemblies are a dual plunger design, and by that we mean, if you look at the wheel cylinder, they have a plunger coming out of each side. So, that dual plunger design will deliver the same amount of braking when driving either forward or in reverse.

Now, the brake shoes themselves, they're lined with an automotive-grade friction material, and that friction material is fully bonded to the shoe. It's not riveted. Gives you a longer life and more braking torque. And these brakes are a self-adjusting brake, and the way you can tell that is if you see the cable that goes around the pulley or the wheel here, goes down to the lever that automatically adjusts your brakes.Same way over here. These self-adjusting brakes automatically adjust to deliver optimum performance and braking power.

Now, there's no need for constant manual brake adjustments. Basically, after you initially install these, you do your initial adjustment and then from then on, they'll automatically adjust. And of course, proper adjustment will lead to better brake efficiency and less wear on your tow vehicles' brakes. Now, this kit will include the 12-1/4" x 3-3/8" driver's side and passenger side hydraulic drum brake assemblies. And just to demonstrate how you can tell what side goes on what side, now on a new assembly, of course, you'll have a sticker that'll say left-hand and right-hand side.But if that sticker wasn't there, you just need to look at the length of the pad on the brake shoes.

This one you can see the pad goes from here to here. This pad is from here all the way to here. This is the longer pad. This is the shorter pad. The shorter pad always faces the front of the trailer so that tells you this goes this way.

So, that's going to tell you it's the right-hand passenger side assembly. And the other one, if you notice, pad goes here to here. This one's the longer pad right here. So, again, the shorter pad will face the front of the trailer so this one goes this way and that's the left-hand side driver's side assembly.Now, the mounting hardware to install these is not included. We do sell those parts separately on our website and they're listed on the product page of this part number as a related product. Also, if you look at the back, you can see right here, here's the four holes. It is designed to fit a four-bolt brake mounting flange. These parts are made in the USA. Specs again, they fit most standard hub and drum assemblies, including Dexter and Lippert. We mentioned they fit axles rated 8,000 pounds. Now, the size we call these are 12-1/4" x 3-3/8" in size, and what those sizes mean, the 12-1/4 will be the diameter, which will be measured from here to here. Put our ruler on, there's your 12-1/4" measurement. And then the 3-3/8" would be the width of the pad on the shoe. There's your 3-3/8" wide. Now, these brakes do require 12-1/4" diameter brake drums, and it does fit 15-inch and larger wheels. But that should do it for the review of the Dexter 12-1/4" left-hand and right-hand side self-adjusting hydraulic drum brake assemblies for 8,000-pound axles.


Customer Reviews

Dexter Hydraulic Drum Brake Kit - Duo Servo - 12-1/4" - Left and Right Hand Assemblies - 8K - 23-402-403

Average Customer Rating:  4.9 out of 5 stars   (8 Customer Reviews)

12-1/4" x 3-3/8" Driver's-side and passenger's-side hydraulic trailer brakes have a dual-plunger design. Mounting flanges have a 4-bolt pattern. Self-adjusting brakes require little maintenance. Fit 16" or larger wheels.

- 23-402-403
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brakes arrived faster than expected. They were an exact fit for my dexter 8k tag axle on my 1998 Bounder Motorhome. The price was very fair compared to other venders



- 23-402-403
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Becky was great



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Fast shipping. Great product selection. Called in for help finding the correct product and got a educated person helping me. Great company!!



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Info for this part was:

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

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