Product Experts Available Now!
Call 1-800-940-8924
Dexter Nev-R-Adjust Electric Trailer Brakes - 12-1/4" - Left/Right Hand Assemblies - 12K
(1906 reviews)
Price: $823.38
In Stock
We'll connect you with nearby partnered installers who know this exact setup.
Dexter Nev-R-Adjust Electric Trailer Brakes - 12-1/4" - Left/Right Hand Assemblies - 12K
Part Number: 23-442-443
In Stock
$823.38
$803.38 after $20.00 Mail-In Rebate 
Thank you! Your comment has been submitted successfully. You should be able to view your question/comment here within a few days.
Error submitting comment. Please try again momentarily.
We'll connect you with nearby partnered installers who know this exact setup.
- All Info
- Reviews (1906)
- Q & A (0)
- Photos
Dexter Trailer Brakes - 23-442-443
Highlights
- Keeps Braking Consistent: Self-adjusting system maintains optimal contact—no manual tuning.
- Stops Smoothly Every Time: Bonded brake pads give strong, even friction without rivet chatter.
- Prevents Jerky Stops: Tapered pad edges reduce stutter and lockup as the brakes wear.
- Handles Heavy Loads Reliably: Rated for 12,000-lb axles with 12-1/4" x 5" drums and 7-bolt flange.
- Simplifies Setup: Left and right assemblies install easily with standard hub-and-drum setups.
- Built for Long Service: Durable magnets and fully bonded shoes deliver consistent braking torque.
Features to know about
Stay in Control Without Constant Adjustment: Self-Adjusting Electric Brakes
With standard electric brakes, you have to crawl under the trailer to keep them tuned. These Dexter Nev-R-Adjust assemblies take care of that for you. A tensioning cable automatically keeps the pads aligned as they wear, so you always get consistent contact and solid braking. The 12-1/4" x 5" assemblies fit 16" or larger wheels and mount with a 7-bolt pattern on 12,000-lb axles. Just hook them up to your electric brake controller—no actuator or hydraulic lines needed.
Smooth, Consistent Braking Every Time: Fully Bonded Brake Pads
Riveted pads can squeal and wear unevenly once the rivets meet the drum. These brakes use fully bonded pads that stay quiet and give more friction surface for better braking torque. Each pad has tapered edges that help prevent stuttering or lockup, keeping stops smooth even under heavy loads. Durable magnets inside a stamped steel housing make sure braking power stays consistent trip after trip.
Built for Reliable Performance: Tested and Certified for Safety
Dexter puts these brakes through rigorous testing to meet Canadian Standards Association (CSA) certification requirements. That certification means they’ve been proven for safety and reliability on the road. From the backing plate to the brake pads, every part is built for dependable stopping power you can trust.
Get Back on the Road Faster: Bolt-On Assemblies for Easy Replacement
Each kit includes left-hand (driver’s side) and right-hand (passenger’s side) brake assemblies ready to mount. Once you confirm the specs—12-1/4" diameter x 5" width, 7-bolt flange, 16" or larger wheels, and 12,000-lb axle rating—you can bolt them right on. No complicated setup or adjustment routine needed, just straightforward installation and reliable stopping performance from the first tow.
Specs
Application
- Application: most standard hub-and-drum assemblies, including etrailer, Dexter, and Lippert (LCI)
Dimensions
- Dimensions: 12-1/4" diameter x 5" wide
Mounting
- Mounting flange bolt pattern: 7 bolt
Wheel Compatibility
- Wheel size: 16" or larger
Weight and Capacity
- Axle rating: 12,000 lbs
Warranty
- Limited warranty: 5-year
23-442 Dexter Electric Brake Assembly - LH - Driver Side - 12-1/4" x 5" - Self-Adjusting - 12,000 lbs
23-443 Dexter Electric Brake Assembly - RH - Passenger Side - 12-1/4" x 5" - Self-Adjusting - 12,000 lbs
Customer Satisfaction Score:
98% were satisfied with this product
2% of customers were not satisfied
- Wrong item was ordered
Ratings & Reviews
4.8
1906 reviews
by:
joseph
02/19/2021
5 Star rating! Parts fit as they should. Excellent product condition. Shipping was fast, only took two days. Teresa J. was very helpful with confirming the parts I needed for my 1991 Butler 10 ton trailer. The old parts were obsolete, she was fast to find a solution. Thank you again Teresa! I highly recommend etrailer.com From parts, shipping and service, all great! This is my third experience ordering from them and I will continue to due so.....
by:
Craig
12/06/2020
Showed up fast, parts were correct. Very pleased
by:
Michael
09/11/2026
by:
Adam
08/03/2022
by:
Royce
06/27/2023
Excellent
by:
Jeff
10/29/2020
by:
Larry
10/19/2026
by:
Craig
08/30/2023
by:
Gary
05/09/2023
by:
Kendra
08/12/2022
by:
Bryan
01/11/2024
by:
James
01/10/2025
by:
Travis
01/27/2021
by:
Robert
11/15/2023
by:
Dirk
03/18/2026
We are an handy couple and like performing our trailer maintenance when we can. Updated our 25ft Airstream Intl from original 12x2 Dexter brakes 4500 lb (cracked and spilt brake wiring from age and noticing very little braking power). Updated to 6000 lb self adjusting versions. Extreme difference once burnishing in and braking for 30 miles. Have a few 300mile trips behind us now and the trailer brake gain dropped for 7.5 down to 5 mostly loaded. Possibly need to turn the brake gain down further as the braking is SO much more positive than ever before. Even when the old brakes were better working. Much less worry and stress now towing at any incline or highway speeds.
Lazer S.
3/24/2026
Glad they are working well for you guys, Dirk! Stopping is pretty important and being able to do so comfortably definitely makes towing less stressful. ^___^ Cool Airstream as well! What the next trip you guys have planned?
by:
Josh B
06/24/2026
Super easy to install and easy to wire in. Did a full new install, mounting to factory brake flanges. All it takes to install these is a small amount of mechanical ability and a knowledge of vehicle wiring. Just remember that these are the brakes only, and you’ll need to add drums as well, replacing your hubs.
by:
Bud
05/08/2026
Everything was as needed Carter helped locate all items and made sure all was correct t for my axles highly recommend for any trailer parts needed
James D.
5/11/2026
Glad Carter could help you track down everything you needed and let us know if you ever need anything else! Appreciate you choosing etrailer Bud!
by:
Lance
12/29/2025
It has been about a year since installing these trailer brakes, and the install was straightforward on our 2 horse/w-tack room -Featherlite gooseneck as direct replacement parts. We have towed a lot of miles over the past year and they have performed great.
Ordering through etrailer was easy, and the customer service was excellent. When I had questions, I was able to send photos for clarification and get clear answers. Solid product and great support. I would definitely order from etrailer again.
Ordering through etrailer was easy, and the customer service was excellent. When I had questions, I was able to send photos for clarification and get clear answers. Solid product and great support. I would definitely order from etrailer again.
by:
Michael
07/27/2026
First time buyer from etrailer. I was having a hard time navigating through the website as I wanted to make sure I got the correct parts. Kayleigh was the representative that I got. She did an excellent job answering my questions and making sure I got the right parts. I installed the complete tandem axle replacement pieces and everything installed just like it should. Kayleigh made this a great experience and I will use etrailer for any future camper needs.
by:
Frederick
09/25/2025
Easiest brake job I ever have done. Product arrived on time and was packaged well. I would recommend these brake replacements to everyone who needs new brakes on there Dexter never adjust system. As you can see in the photo, many of the parts on the this right side were missing. Springs,self adjuster,cable. Removed the drum and five nuts later the whole backer plate was in my hand. Much easier than trying to figure out what's missing then order and replace those parts. Now I have the confidence of having new brakes on that axle. In the spring when I bring my fifth wheel back from Florida I replace the brakes on the front axle too. Hope this helped anyone on the fence about doing this job.
Gwendolyn Y.
9/25/2025
Install looks fantastic, Frederick! I know your review will help others when they come across it. Also... where do you keep your 5th wheel at down in Florida?
by:
RVTim
09/08/2026
I'm real happy with the upgrade from surge to electric brakes on my boat trailer. I only do fresh water and only a couple trips a year, but the upgrade was well worth it for me. There is but one thing I wish were different with these brakes. The studs are pressed into the backplate, and on my trailer axle, the welds on the back wouldn't let the nuts sit flat on the bottom bolts, when tightening them. This forced me to remove the bottom studs, buy some 3/4" bolts of the same thread (grade 8) and put nuts on the brake-internal side of the plate. That left the nuts very close to the magnet wires on the arm that holds the magnet, and I had to adjust the clips to flip the wires over the arm at a higher up spot to avoid the nuts. All in all it worked, but I would love to see them come up with a better routing path for those wires. As it is I'm going to have to inspect them regularly to make sure nothing is moving and pinching, or I'll have some shorting of the wires if they moved drastically. I did have one brake that after assembly, I found that the bottom adjuster wasn't snapped in properly (my fault) but otherwise the rest of the process went well.
by:
joe king
10/09/2026
Went with this new setup to have the auto adjustment feature, and the install went perfectly. I have been running them for 2 years now and haven’t ran into any issues.
Thanks to all at etrailer for all your help and fast shipping.
Thanks to all at etrailer for all your help and fast shipping.
by:
Al T.
10/30/2026
One of this L/R set arrive broken As always, etrailer's customer service is outstanding! I had a replacement part in two days and UPS came already to pick up the bad one. Th brakes are of excellent quality and very easy to install.
by:
Paul
10/02/2026
Carter was very helpful, and the backing plates fit perfectly. The shipping was very fast, and FREE! I buy from etrailer rather than Amazon these days if I need trailer parts. Installation was straightforward. I should have bought new grease seals at the same time, wish they were included! But I got some locally and installed them while I had the brakes apart. Five stars, service, parts, and shipping!!!
by:
Jeffery
03/26/2026
Parts showed up super quick. All the parts were the correct parts that the Representative helped me order. I’ll definitely order from them again.
Heather A.
4/9/2026
I’m glad everything showed up quick and that we got you the right parts the first time, especially with brakes where you definitely don’t want any guesswork. That makes a big difference when you’re ready to get everything back together. Also, that looks like a pretty serious RV you’ve got there. What are you running?
25
1906
true
Show More Reviews
See what our Experts say about this Dexter Trailer Brakes
- Is There a Way to Tell Difference Between 12k and 15k Trailer Brake Assemblies12k trailer brake assemblies like the part # 23-442-443 and 15 assemblies like part # 23-446-447 can both be 12-1/4 inch by 5 inch and use the same 7 bolt mounting pattern so dimensionally it's hard to say. I would look for part numbers on your assemblies to see if you can determine it that way or you could look on the axle for a capacity listed. The big difference between the two will be magnet sensitivity as the higher rated assemblies will need a magnet that grabs a little harder....
view full answer... - Electric Trailer Brake Assembly for 10k & 12k AxleTo find the correct electric trailer brake assembly for your 10k or 12k axle, you need to know what brake mounting flange bolt pattern you have, and the inside diameter and depth of your drum. The only option for 10k and 12k axles we have are from Dexter and each has a 7-bolt brake mounting flange. The 10k is 12-1/4" diameter x 4" wide (so that's the size drum it fits) while the 12k is 12-1/4" diameter x 5" wide: - 10,000 lb Brakes: Dexter Nev-R-Adjust Electric Trailer Brakes # 23-438-439 -...
view full answer... - Replacement Brake Assemblies for Big Tex 22GN with Part Number 36-120I was able to determine that the brake assemblies you have are 7-bolt 12-1/4 inch by 5 inch brake assemblies like the part # 23-442-443.
view full answer... - Brake Shoe Thickness of Dexter 10 Galphorite Free-Backing Hydraulic Trailer Brake AssembliesThe brake shoe lining thickness of the Dexter Electric Trailer Brake Kit part # 23-442-443 is about 7/16". I reached out to Dexter for this info but they were not able to provide this so I went out to our warehouse and measured it for you.
view full answer... - Recommended Brakes for a Dexter 10,000 lbs Axle Thanks for the information! I just heard back from Dexter and your axle has a 10,000 lbs capacity. For brakes you will want the Dexter Nev-R-Adjust Electric Trailer Brakes item # 23-438-439.
view full answer... - Replacement Trailer Brake Magnet and Assemblies for Dexter 12,000 lb Trailer AxleFor a 12,000 lb Dexter axle the correct replacement brake magnets would be the part # BP01-306 which can work on either side of the trailer. Or for all new assemblies you'd want the part # 23-442-443 which is one for each side. These come with magnets so you wouldn't need those as well.
view full answer... - Replacement Brake Assemblies for Trailer with Dexter 12k AxlesWe do have the correct brake assemblies you are needing for your Dexter 12k axles that has 5 inch wide assemblies that attach with a 6 lug bolt pattern. The best option is the etrailer.com assemblies part # AKEBRK-12 that come with both sides. The price on these compared to the Dexter equivalents # 23-442-443 is considerably better and the quality is essentially the exact same.
view full answer...
- Replacement 12 Inch Brake Kit for Dexter Axle Torflex AxleThe Dexter Electric Trailer Brakes # 23-180-181 are the correct replacements for your Dexter Torflex Axle as long as they are 12" brakes. You mentioned 12a so if that's a dimension then these will work, but if that's supposed to be 12K then you need the Dexter Nev-R-Adjust Electric Trailer Brakes # 23-442-443 instead.
view full answer... - Replacement Brake Assemblies for a Dexter 12K Axle I looked up the information on your Dexter 12k electric axle 7810041. To replace the brakes on your 2021 Lamar gooseneck trailer you are going to want the Dexter Electric Trailer Brake Kit item # 23-442-443. We do not offer just the shoes/pads as replacements or individual parts and pieces. This kit comes with both the left and right hand assemblies to replace one axles brakes. With 85,000 miles you will want to go ahead and replace the entire assemblies anyways.
view full answer... - Replacement Brake Assemblies for Dexter 12k Trailer Hub D8633444 I sent your serial number and axle info to Dexter and they told me that the correct hub/drum you need is one we don't carry at this time 008-214-09 but we do have the brake assemblies # 23-442-443.
view full answer... - Electric Trailer Brakes For 12,000 lb Trailer AxleThe electric brakes are something we can set you up with, though we don't have 12k hub and drum options. But the 12,000 lb electric trailer brakes you need are the following: - Dexter Electric Trailer Brake Kit # 23-442-443 The only thing you'll need for your brakes is the mounting hardware, the Mounting Bolts and Hardware # BRKH122510.
view full answer...
Do you have a question about this Trailer Brake?
Info for this part was:
Edited by:
Lindsey S
Installed by:
Jeff D
Expert Research:
Jameson C
Updated by:
Wilson B
Written by:
Alexander C
Written by:
Ryan F
At etrailer we provide the best information available about the products we sell. We take the quality of our information seriously so that you can get the right part the first time. Let us know if anything is missing or if you have any questions.
Craig
12/12/2021
The brakes have been on for a year now. They work just like stock. Received quickly.