Dexter Electric Trailer Brake Kit - Self-Adjusting - 12-1/4" - Left/Right Hand Assemblies - 10K

Dexter Electric Trailer Brake Kit - Self-Adjusting - 12-1/4" - Left/Right Hand Assemblies - 10K

Item # 23-438-439

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Our Price: $595.84

Trailer Brakes

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23-438-439 - 10000 lbs Axle Dexter Axle Trailer Brakes
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12-1/4" x 4" Driver's-side and passenger's-side electric trailer brake assemblies fit 10,000-lb axles. Mounting flanges have 7-bolt pattern. Self-adjusting brakes require little maintenance. Fit 16" or larger wheels. Lowest Prices for the best trailer brakes from Dexter Axle. Dexter Electric Trailer Brake Kit - Self-Adjusting - 12-1/4" - Left/Right Hand Assemblies - 10K part number 23-438-439 can be ordered online at etrailer.com or call 800-298-8924 for expert service.
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Dexter Axle Trailer Brakes - 23-438-439

  • Electric Drum Brakes
  • 10000 lbs Axle
  • 12-1/4 x 4 Inch Drum
  • 16 Inch Wheel
  • 16-1/2 Inch Wheel
  • 17 Inch Wheel
  • 17-1/2 Inch Wheel
  • Dexter Axle
  • Self Adjust
  • Brake Set

12-1/4" x 4" Driver's-side and passenger's-side electric trailer brake assemblies fit 10,000-lb axles. Mounting flanges have 7-bolt pattern. Self-adjusting brakes require little maintenance. Fit 16" or larger wheels.


Features:

  • Electric brakes are easier to install and offer more user control than hydraulic brakes
    • Require only an electric brake controller (sold separately) - no actuator or hydraulic lines necessary
  • 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 4" wide
  • Mounting flange bolt pattern: 7 bolt
  • Wheel size: 16" or larger
  • Axle rating: 10,000 lbs


23-438 Dexter Electric Brake Assembly, LH 12-1/4" x 4" - Self Adjust - 10,000 lbs

23-439 Dexter Electric Brake Assembly, RH 12-1/4" x 4" - Self Adjust - 10,000 lbs







Video of Dexter Electric Trailer Brake Kit - Self-Adjusting - 12-1/4" - Left/Right Hand Assemblies - 10K


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




Video Transcript for Dexter Axle Trailer Brakes - Electric Drum Brakes - 23-438-439 Review

Today I'm going to take a look at the Dexter 12 and 1/4 inch self-adjusting electric trailer brake kit, with the left and right hand brake assemblies for 10,000 pound axles. Now, electric brakes, they're easier to install. They offer more user control than hydraulic brakes. Basically, they require only an electric brake controller, which we do sell separately on our website. There's no actuator, hydraulic lines necessary with electric brakes. These brakes happen to be self-adjusting brakes and you can tell that by the cable, goes around the pulley, attaches to the lever down here that'll automatically adjust the brakes. There's no need for manual brake adjustments.

Of course, being automatically adjusted gives you proper adjustment, which will lead to better brake efficiency and less wear on your tow vehicle's brakes. This part includes both the left hand driver side, right hand passenger side brake assemblies. All the mounting bolts and hardware is sold separately. A few specs on this. The dimension on these brake assemblies is 12 and 1/4 inch diameter by 4 inches wide, so the diameter would be measured from this pad all the way over to this pad. If we put the ruler on that, there's your 12 and 1/4 inch diameter.

The width would be the width of the pad on the brake shoe. If we take the ruler, measure the width, there's your four inches wide. Just let me turn this to the back here and you can see the seven holes, so it does require a brake mounting inaudible 00:01:15 bolt pattern of seven bolt holes. It does require the use of 12 and 1/4 inch brake drums. The wheel size that'll fit on these assemblies is 15 inches or larger, and again, they are designed for axles rated at 10,000 pounds. These are electric brakes, so if I show you the back here you'll see there's two yellow wires coming out, they do need to be connected.

One goes to the brake feed, the other goes to a ground and they're both yellow wires so either wire can be used for either function. The last thing I just want to show you is how to tell the difference between the left hand driver side and right hand passenger side. On a new assembly, of course, will have a sticker and that sticker will tell you what side it goes on, but if the sticker wasn't there the easiest way to tell is look at the length of the pad on the brake shoe. This pad goes all the way from here to here. This one's just from here to here, this is the shorter pad. The shorter brake pad is the primary shoe, that'll always face the front of the trailer, so that tells you this is going to be the left hand driver side assembly.

On this one, again, the pad is all the way here to here. This one's just here to here, that's the shorter pad, the primary shoe. That's going to tell you this faces on the right hand passenger side of the trailer. That should do it for the review on the Dexter 12 and 1/4 inch self-adjusting electric trailer brake kit, with left and right hand brake assemblies for 10,000 pound axles.

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  • Replacement Drum Brakes Assembly for 10,000 lb Dexter Axle
  • We have drum brake assemblies for your 10K Dexter axles. If you want the electric assemblies, we have the Dexter Electric Brake Kit - Self-Adjusting - 12-1/4" - Left/Right Hand Assemblies - 9K to 10K # 23-450-451 if your hubs are 12-1/4 by 3-3/8 inches. If your hubs are the 4 inch width, then you will use the Dexter Electric Trailer Brake Kit # 23-438-439. If you have hydraulic brakes we have the following: # 23-410-411 for 12-1/4 x 3-3/8 inch drum # K23-524-00-2 for 12-1/4 x 3-1/2...
    view full answer...

  • Availability of 10,000 lb Axle Dexter Trailer Brake Assemblies
  • The only option we have for 10k axle rated Dexter electric brake assemblies is the part # 23-438-439 that you referenced. 10k trailer axles with drum brakes just aren't as popular as other options so there isn't as much competition for this size.
    view full answer...

  • Electric Drum Brakes for 10K Axle Conversion from Hydraulic Brakes
  • Your choice of electric drum brakes to replace your hydraulics will be based on axle weight capacity. We do have electric brakes rated for 10K axles and these have the same 12-1/4 x 4 dimensions as your current hydraulics. You can see all of these electric brakes on the linked page. For example, Dexter Self-Adjusting brake set # 23-438-439 uses the same 7-bolt mounting pattern as the item you referenced, # AKEBRK-10R, but will properly fit your drums. These brakes work with wheels sizes...
    view full answer...

  • Replacement Brake Assemblies for Trailer with Dexter 10k Axles
  • If you can measure the width of your current brake assembly pads I can get you the correct brake assembly set for your Dexter 10,000 lb axles. If the pads are 3-3/8 inches wide you'd want the part # 23-450-451 or if they are 4 inches wide you'd want the part # 23-438-439. I tried looking up the numbers on the tag you sent a picture of and was not able to find anything.
    view full answer...

  • Will Dexter 12-1/4" x 4" Brakes Fit in Place of Old Brakes with Stamped Backing Plate
  • Provided that your existing brakes are 12-1/4" x 4" and use the same 7-bolt mounting pattern then you can use Dexter Electric Trailer Brake Kit # 23-438-439. I have included a link to a video review of this kit for you.
    view full answer...

  • What Is the Weight Capacity Of a Dexter D100G Axle
  • The spoke with Dexter and the code "D100G" tells me you have two 10,000 lb trailer axles. I have attached some parts you may need for the axle below. Dexter Trailer Hub Drum Assembly (After July 2009) - part # 8-430-5UC3 Dexter Trailer Hub and Drum Assembly (Before July 2009) - part # K08-288-90 Dexter Electric Trailer Brake Kit (12-1/4" x 4") - part # 23-438-439 Dexter Hydraulic Drum Brake Kit (12-1/4" x 4") - part # 23-404-405 Inner Bearing - part # 387A Inner Race - part #...
    view full answer...


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Info for this part was:

Edited by:
Lindsey S
Expert Research:
Michael H
Expert Research:
Jameson C
Installed by:
Jeff D
Written by:
Alexander C

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