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Dexter Nev-R-Adjust Electric Trailer Brake Assembly - 12" - Left Hand - 6,000 lbs

Dexter Nev-R-Adjust Electric Trailer Brake Assembly - 12" - Left Hand - 6,000 lbs

Item # 23-458
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Dexter Accessories and Parts - 23-458
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12" x 2" Driver's-side electric trailer brake assembly fits 6,000-lb axles. Mounting flange has a 5-bolt pattern. Nev-R-Adjust brakes require little maintenance. Fits 14-1/2" to 16-1/2" wheels. 1-800-940-8924 to order Dexter accessories and parts part number 23-458 or order online at Free expert support on all Dexter products. Great prices and Fastest Shipping for Dexter Nev-R-Adjust Electric Trailer Brake Assembly - 12" - Left Hand - 6,000 lbs. Accessories and Parts reviews from real customers.
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Dexter Accessories and Parts - 23-458

  • Trailer Brakes
  • Electric Drum Brakes
  • Brake Assembly
  • 12 x 2 Inch Drum
  • Dexter
  • LH
  • 6000 lbs
  • Self Adjust

12" x 2" Driver's-side electric trailer brake assembly fits 6,000-lb axles. Mounting flange has a 5-bolt pattern. Nev-R-Adjust brakes require little maintenance. Fits 14-1/2" to 16-1/2" wheels.


  • Electric brakes are easier to install and offer more user control than hydraulic brakes
    • Requires only an electric brake controller (sold separately) - no actuator or hydraulic lines necessary
  • Nev-R-Adjust 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
  • Adjuster plugs (included) cover access holes to keep dirt and grime out of the assemblies and off of the shoes
  • Mounting bolts sold separately
  • Made in the USA


  • Application: most standard hub-and-drum assemblies, including Dexter, Lippert (LCI), and AL-KO
  • Configuration: left hand (driver's side)
  • Dimensions: 12" diameter x 2" wide
  • Mounting flange bolt pattern: 5 bolt
  • Wheel size: 14-1/2", 15", 16" and 16-1/2"
  • Axle rating: 6,000 lbs
  • Limited 5-year warranty

K23-458-00 Dexter 12" Nev-R-Adjust Electric Brake Assembly for 6K Axles - LH

Replaces 23458 and 23-458

Customer Satisfaction Score:

Customer Reviews

Dexter Nev-R-Adjust Electric Trailer Brake Assembly - 12" - Left Hand - 6,000 lbs - 23-458

Average Customer Rating:  4.8 out of 5 stars   (2432 Customer Reviews)

12" x 2" Driver's-side electric trailer brake assembly fits 6,000-lb axles. Mounting flange has a 5-bolt pattern. Nev-R-Adjust brakes require little maintenance. Fits 14-1/2" to 16-1/2" wheels.


Replaced old non-self-adjusting trailer brake assemblies with new self-adjusting ones. See photos of old & new. TIP: Temporarily tape new wires out of the way to avoid pinching them between the axle flange and backing plate when mounting the new brake assemblies (ask me how I know).



Brakes are still working great


I ordered a complete 4 Brake and Hub kit to replace my old brakes on my Toy Hauler. My wife and I go fron Florida to the Black Hills and visit our family there as wells as enjoy the Sturgis Bike Rally as well as the beautiful country. Madison M. and Robert R. assisted me in getting the correct replacement brakes and even saved me money on making the whole package up with no issues, even answered my numerous questions. Once I received the complete set I noticed to hub rear seals damaged in shipping. I ordered replacements seal and Madison was on it and will refund my seals! Good Job all around by Madison and Robert! Thanks Very Much.


These went on very easy, and worked great right out of the box. It was nice to have them all match. I spliced them in a couple days before going on a 1,000+ mile vacation to Arizona. They've worked flawlessly (I check them to make sure they aren't hung up). This was just one headache eliminated for the trip by just getting new brakes instead of messing around with junky old ones. We've had the toyhauler out on several other trips also. I will purchase again if I need any for another trailer.



The brakes have been working great. After the initial installment and adjustment, I havent had to do any additional work to any of them. They are performing great, really better than I expected. I always test them with my brake controller when I first get back on the road and they have always worked. I have recd a few of my friends to buy any parts they need from your website as it was easy and had lots of options trailer stores around here are pretty limited.


Excellent Service. Quick shipping. Correct brake assemblies.

My brake sets did not have the plastic adjusting plugs included. I had to purchase them separately at nearly $1 each. It appears they are now included.

Would I order from etrailer again. You bet your aluminum trailer, I will!


Perfect replacement for my 24ft Hallmark trailer. Very easy to install, just bolt on and connect the wires. With the automatic adjustment there is nothing else to do! I recommend putting some extra anti-seize to be on the safe side (I had similar brakes seize up after a big winter in the North East). Also you will need 2 plugs per assembly to cover the adjustment holes (the brakes don't come with any plug and have 2 holes!)


I bought these brakes to replace the hydraulic brakes on my newly purchased (at DOD auction) M1102 trailer. The OEM eq was almost new (2010 model) but I wanted to remove the hydraulic surge brakes for electric. They are a perfect fit and easy to install. Would have been nice to have the dust covers for the back of the housing.


Best thing about this brake kit is it's made in the USA. No hassle ordering and quick delivery. Did the front axle this month, doing rear axle next month.


I ordered a new electric brake assembly #23-458 and 12" drum kit #K08-201-98 for a 5200lb Dexter E-Z lube axle. All parts arrived on time and were correct. Ordering through Etrailer was fairly easy once I learned to navigate their site because there are a few variations to the parts I specifically needed for my axle. It helps if you have part numbers for your axle to compare with the ones on their site. I would liked to have had a place to enter my axle type, number, etc. and just have all the parts available for it displayed. Or perhaps an online chat page with a sales rep would be great too. All and all, I highly recommend and will definitely use Etrailer in the future.



Update: After a year and over 3500mi, my brakes appear to be working properly. With that said, I haven’t pulled my drums off for a thorough inspection. But so far so good.


Easy to install and set


Order arrived early and complete with no damage.


Item: 23-458: This item Is a replacement for my 5th wheel camper. Do to the fact while traveling the brake did not release and failed on interstate I-40 late in the evening.The heat caused all the parts on the spindle to fail. The cost of replacing brakes, drum, bearing, seals, grease, plus service cost is Very Expensive after hours. Having these items on hand can save a lot of time and money.
Etrailer parts are top quality and best online price.



Great! I have recommended these item any times. Thanks,


Great heavy duty option for those looking to have a quiet, off-road ride. Works with most applications and requires little to no preparation. I used these on multiple trailers over the years and will continue to.


The electric trailer brakes arrive within three days of ordering. The parts were a perfect fit. Etrailer' support is second to none! Helpful videos and live support available. The four trailer brakes were $100.00 less expensive than the nearest competitor and free shipping too!


changed out both sides with new; bearings, seals, outside dust caps, and adjusting electric brakes: 1. parts were as described and fit, 2. easy to install new ones, and 3.they have been working fine without any problem. Great videos.

Jim M.


after one year - these products are working as they should, no need to adjust the brakes. Easy to install and worth the price.


Quick shipment, super easy to install. Remove 5 bolts, cut the wires and the old one comes off. Tighten 5 bolts, reconnect the wires and put the drum back on.



Brakes are still working great, no issues!


These are well built, easy to install brake assemblies. I had to adjust them after installation as they would not self adjust as the video states. They will be great if they do auto adjust as they wear. Price was great and they arrived in three days after my order. I will buy all my trailer parts from etrailer in the future.

Gerald J.


Best brakes ever owned, they operate better than the orig. brakes and seem to stay adjusted very well. I never have to adjust and easy to install.


Emergency issues while traveling are never welcome, but I was pleased and impressed with the website, the phone in service I received from 2 very capable and helpful team members. Ordered products arrived on time and have been installed. Wheel, tire, and electric brake assembly match my original equipment. So Grateful I found you!


Received the brakes within 4 days.. Finally got around to installing them on my 5th wheel. Nothing to it..perfect fit. Will order again from etrailer!!



Hi.. thanks for the follow up.. Great products and service. Will always use you guys for my trailer supplies.


Only one small glitch,self adjusting cable was not installed properly on two of the brake assemblies.No big problem just had to redo brake assembly



Working fine. Only problem I had is with the seals. Pulling hubs to repack bearings found all four seals leaking. May have been a bad batch. Fortunately was able to locate seals locally, although at a higher price


Great product! Nice company to deal with.

New life for my '63 Avion T-20.


Wanted to wait until after our most recent trip with our trailer before giving you the one year follow-up. Just pulled the trailer almost 1000 miles in the Rocky Mountains. The Nev-R-Adjust brakes & drums worked great and I felt very confident in their performance. I really appreciate not having to crawl under the trailer to adjust the brakes. All are good products and I would recommend them to all.


We put these never adjust brakes on after we removed the manual adjust brakes from our Cargo Trailer converted to a RV. We then installed the never adjust electric brakes and broke them in according to the instructions. We then started and completed a 19,400 mile trip from Florida to California then to Washington then to the UP of Michigan then to the Adirondack Mountains of NY and then back to Florida. We never had a problem with the brakes. We visited 17 National Parks, 7 state parks and numerous national forests. Great trip with no problems.


I bought a trailer that had been home-fabricated using the axles from an old horse trailer. The axles had the remnants of electric trailer brakes, but the guts were missing. I was preparing to move from Pennsylvania to Montana, and intended to tow the trailer with a boat and some loose ends, and I wanted to have the security of brakes. Although I had never attempted to do an installation of this type, there were some helpful youtube videos to guide me. The installation went well, albeit slowly, mostly due to my inexperience, and the brakes proved to work well. The drive west was smooth, and the trailer has proved to be very useful out here. As far as I can tell, everything continues to work perfectly.


Great product and easy to install. Make sure you adjust the brake at installation and follow the brake in directions. After that they automatically adjust on their own. It’s nice not having to jack up the 5th wheel to manually adjust every 2000 miles as per the manufacturer. It’s also a good time to inspect your bearings and replace with American made bearings if needed. I did everything, brakes, bearings, grease seals and races. Be sure to use a good high temperature grease. Safe travels :)


Installed these brakes on my Bobcat trailer. Use it at least once a week. Utilizing a Prodigy controller, also bought from etrailer, the trailer's braking is excellent, the control on down hills and turns is perfect. The installation was flawless, and simple. Redid the wiring, also bought from etrailer, while I was installing the new brakes and everything works as it should. Stops first time, every time. Thanks for great products, one stop shop and fantastic customer service.

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See what our Experts say about this Dexter Accessories and Parts

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    Since typically it's about the same price to replace the entire brake assembly as it is to replace the pads or shoes, and the fact that it looks like your assemblies have seen better days due to the wear on the magnets and the amount of rust. I would recommend you go ahead and replace both assemblies. Based on the number that is on the sticker of your brake assembly I was able to determine that your brake assemblies are 12x2, have a 5 bolt mounting flange and are designed for 5,200 lb...
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  • Compatibility of 12 Inch Nev-R-Adjust Electric Brake Assembly for 6K Axles w/6 on 5-1/2 Hub & Drum
    Thanks for your picture, it was a great help. Yes, the 6 on 5-1/2 bolt pattern 6K hub and drum # AKHD-655-6-K you picked out is compatible and will work well with your 12 inch Nev-R-Adjust electric brake assembly for the right side # 23-459 or left side # 23-458 and 2-1/4 inch ID grease seal # GS-2250DL. I went ahead and checked your past orders and confirmed it was the # 23-459 brake and # GS-2250DL seal you ordered previously. I have linked all the above mentioned parts to this page...
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    Since your spindles already have brake flanges on them all you need to add brakes to your trailer are the brake assemblies, the hub/drums, wiring, and possibly a new trailer connector if you don't have a 7-way currently. Since you have 2,200 lb axles the correct assemblies you'd need are the part # K23-103-00 for the left hand side and part # K23-104-00 for the right hand side. For this axle capacity we don't have an etrailer brand equivalent. You'd need 10 gauge wire ran to the assemblies...
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  • How to Pick Out Replacement Hubs and Brake Assemblies for a 2009 Komfort 255 Trailer
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  • Should 7k Trailer Brake Assemblies be Used on a 6k Trailer Axle
    Dimensionally they'll fit and they will operate but you don't actually get a stronger braking action. Instead the brakes will be harder to setup and get the correct amount of braking action. The heavier duty assemblies have a magnet that's more sensitive which helps with heavier weights but when used on a lighter trailer they become harder to setup and not anymore powerful. Best option is go to with 6k brake assemblies like the part # 23-459 for the right hand side and part # 23-458 for...
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  • Square Axle Weight Rating with Hubs that have 25580 and 15123 Bearings
    Square axles are a bit harder to determine their capacities based on diameter but based on the bolt pattern and diameter of the hubs you most likely have a 5,200 lb or 6,000 lb rated axle. Especially when you consider that all of the hubs that match your bearing set are 5.2 k or 6k. See link.
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    In most cases it is about the same price and a better choice just to replace the entire brake assembly instead of trying to replace just the brake linings. As long as you have a 5 bolt mounting flange for your brake assemblies (you should based on the brake size you listed) I would recommend the part # 23-459 for a right hand assembly and the part # 23-458 for a left hand assembly. These assemblies are nice because they will automatically adjust to deliver optimum performance and braking...
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  • Does it Matter Which Trailer Brake Assembly is Right and Which is Left
    The braking performance will not be very good if you install brake assemblies on the wrong side of the trailer. The left side assembly is the driver's side (if the trailer were a car) and the right side is the passenger's side. The actuating arm that is attached to the brake magnet should be pointing towards the front of the trailer like in the picture I have included.
    view full answer...
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