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Dexter Nev-R-Adjust Electric Trailer Brake Assembly - 10" - Left Hand - 4,400 lbs
Dexter

Dexter Nev-R-Adjust Electric Trailer Brake Assembly - 10" - Left Hand - 4,400 lbs

Part Number: K23-478-00
In Stock
$261.62
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Driver's-side electric trailer brake assembly measures 10" x 2-1/4" and fits 4,400-lb axles. Mounting flange has 4-bolt pattern. Nev-R-Adjust brakes require little maintenance. Fits 13" to 15" wheels. 1-800-940-8924 to order Dexter accessories and parts part number K23-478-00 or order online at etrailer.com. Free expert support on all Dexter products. Great prices and Fastest Shipping for Dexter Nev-R-Adjust Electric Trailer Brake Assembly - 10" - Left Hand - 4,400 lbs. Accessories and Parts reviews from real customers.
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  • Reviews (63)
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Dexter Accessories and Parts - K23-478-00

  • Trailer Brakes
  • Electric Drum Brakes
  • Brake Assembly
  • Dexter
  • 10 x 2-1/4 Inch Drum
  • Self Adjust
  • LH
  • 4400 lbs

Driver's-side electric trailer brake assembly measures 10" x 2-1/4" and fits 4,400-lb axles. Mounting flange has 4-bolt pattern. Nev-R-Adjust brakes require little maintenance. Fits 13" to 15" wheels.


Features:

  • 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 and hardware included
  • Made in the USA


Specs:

  • Application: most standard hub-and-drum assemblies, including Dexter
    • Does not work with Lippert 4,400-lb axles due to clearance issues with the brake mounting flange
  • Configuration: left hand (driver's side)
  • Dimensions: 10" diameter x 2-1/4" wide
  • Mounting flange bolt pattern: 4 bolt
    • Measurement from center of top mounting stud to center of top mounting stud: 2-7/8"
    • Measurement from center of bottom mounting stud to center of bottom mounting stud: 3-1/4"
    • Measurement from center of top mounting studs to center of bottom mounting studs: 3"
  • Wheel size: 13", 14", and 15"
  • Axle rating: 4,400 lbs
  • Limited 5-year warranty


Mounting stud location measurements


K23-478-00 10" Dexter Axle Nev-R-Adjust Electric Brake Assembly - 4.4K - LH

Replaces 182765




California residents: click here


Customer Satisfaction Score:

Ratings & Reviews

4.8

63 reviews
Driver's-side electric trailer brake assembly measures 10" x 2-1/4" and fits 4,400-lb axles. Mounting flange has 4-bolt pattern. Nev-R-Adjust brakes require little maintenance. Fits 13" to 15" wheels.

by:

Blew an inner wheel seal and slung grease everywhere inside the brakes. Bought new assembly, cleaned the drum and repacked bearings, installed new Temkin seal. Couple of hours and good to go. Going to replace the other wheel seals just for prevention. I do grease the bearings as required every 7k but never crossed my mind that eventually seals do wear out. The seal made almost 50k. No complaints here. etrailer is the best ever helping to find correct part and super fast shipping. etrailer is on time, every time!

Victoria H. profile picture

Victoria H.

4/1/2025

Sounds like you got this messy situation sorted out Chris. I'm happy to hear install went smoothly for you and 50k miles on that seal is pretty impressive! Hopefully there's nothing but smooth rides ahead, but if you need anything we'll always be here to help :)



by:

I am happy to say that my Dexter Nev-R-Adjust Electric Trailer Brake Assembly is working great. I especially appreciate how easy the installation was. My originals got really fried and left me with no trailer brakes going over the mountains.



by:

Thanks to everyone that helped get the correct breaks for my 1905 Roockwood Mimi light. They are installed now. Just need to be broke in.

Robert profile picture

Robert

10/26/2021

I have had new brakes on my rockwood mini light for a year now. I have about 10,000 miles on them and they are still working like new. I could not be happier with them.



by:

Great price, easy to install.



by:

The parts are direct replacements that fit perfect. Swapping them out was easy. Will come back to buy more supplies in the future. The delivery system also was timely and with no damage to parts.



by:

Well I just received my trailer brakeassemblies, and I am impressed with how the package came with no issues. The shipping container was in perfect condition, and the products inside were in excellant shape. I won't be able to do a full review, as I haven't received the Brake drums yet as they are on backorder. I expect they will be in as great condition as the brake assemblies are. Thank you Etrailer. The hitch extension loks great and fits perfect on the back of my camper.



by:

Awesome service. Parts were delivered in 2 business days. Right parts and easy to install. I would recommend eTrailer. Notified by email when parts shipped and received.

Ron profile picture

Ron

7/31/2022

great no issues



by:

Genuine Dexter parts at very reasonable prices with free shipping at certain $$$ levels. Excellent part discriptions with accurate & precise pictures. Quick shipping, excellent refund policy just be sure to keep original packaging until sure about part being correct. etrailer is my 1st choice for parts for my trailers or towing accessories.



by:

The dexter Nev -r-adjust electric trailer brake assembly had to be replaced after 3ooo miles ..a piece of junk.



by:

Received product today and it was packed in a very protective, sturdy container. There was excellent communication with Etrailer during the procurement process. I won't be unpacking the items for a bit but I'm very confident everything will be OK. You know, that gut feeling kind of thing. Thank you Etrailer.



by:

Received exactly what I ordered in a very timely manner. Products were packed very well for shipping. Excellent service and great communication from the initial order all the way through to the final delivery. These folks know how to do business right and are great to do business with! Purchased these to have on hand to replace RV brakes when traveling. Had 2 brake sets break on our last trip and it cost us a lot of down time.



by:

I called an order in for one of our customers who needed a brake assembly ASAP. I had to have it overnighted. I got it the next morning, and it was exactly what we needed. I have ordered from Etrailer many times and have ALWAYS had prompt, courteous, and professional service. I recommend them highly and of course I will continue to order from them in the future! Thanks to everyone at Etrailer! Dana Danson, Parts Coordinator at Camping World



by:

I called an order in for one of our customers who needed a brake assembly ASAP. I had to have it overnighted. I got it the next morning, and it was exactly what we needed. I have ordered from Etrailer many times and have ALWAYS had prompt, courteous, and professional service. I recommend them highly and of course I will continue to order from them in the future! Thanks to everyone at Etrailer! Dana Danson, Parts Coordinator at Camping World



by:

I was impressed with the online site and the ease in locating the product I needed, both the ordering and the delivery went smoothly, the instructions were clear and the installment went without a hitch. Ready to get the trailer back on the road again, Thx



by:

Great service by Terri and etrailers. Terri confirmed that I was ordering the correct item and that it would arrive overnight in Traverse City, MI as needed. Thanks for all your help.



by:

He trailer had the hard to get part that I was unable to obtain locally. I initially gave them an undeliverable address and they contacted me right away to get a better shipping address. Shipping was quite prompt.



by:

Can’t say enough nice things about the understanding and help I received after ordering the wrong brake assembly. In just a few minutes on the phone I had a return label and the correct part on its way. Excellent teamwork etrailer.



by:

Excellent service and quick shipping - using entire assemblies made the job easier and quicker than replacing parts!



by:

Quick shipping and excellent customer support. Brake assembly arrived in good shape as advertised.



by:

Broke down on the side of the road. Manufactured told me $1,000 and two weeks for this part. A trailer had it overnighted, for a third of the cost !!!



by:

I’m very happy with the service from etrailer
Parts got here on time and were correct



by:

Fast delivery, Rochelle was fantastic!



by:

Fast shipping!



by:

EXACTLY WHAT WE NEEDED. THANKS E-TRAILER



by:

Works as expected, easy to install. The assemblies should be packed better. Some of the parts were damaged because the heavy drums bounced around and damaged it.

Thomas M. profile picture

Thomas M.

12/30/2021

I will have Customer Service reach out to you.


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See what our Experts say about this Dexter Accessories and Parts

  • Never Adjust Dexter Brake Assemblies to Replace Dexter 023-454-00 and 023-455-00 Assemblies
    The Dexter Nev-R-Adjust Electric Trailer Brake Assembly equivalent to your current assemblies is part # K23-478-00 for the left and part # K23-479-00 for the right side. Please check the mounting pattern of your current assemblies to the # K23-478-00 for the left and part # K23-479-00 for the right side because these have a very specific mounting flange pattern. I am not able to add the photo right now but if you go to the product pages of K23-478-00 and K23-479-00 you can see the diagram.
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  • Recommended Trailer Brakes for 2006 Bigfoot 21 FT Travel Trailer
    From the research that I have done it looks like a 21 ft Bigfoot is going to weigh about 4000 lbs so I am going to assume that it has 4400 lb axles. Since there is a very good chance that it has the 10 inch x 2-1/4 inch brake assemblies, you could use the Dexter Nev-R-Adjust Electric Brake Assemblies, # K23-478-00 for left hand and # K23-479-00 for right hand. Unfortunately a collective OEM trailer parts catalog does not exist, so the best way to determine what parts you will need is...
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    Based on what you described you have a standard 4-bolt trailer brake assembly bolt pattern. For brake assemblies that match that and the 4,400 lb axle capacity you have you'd want the part # K23-478-00 for the left hand side and part # K23-479-00 for the right hand side. For a brake flange you'd then want the part # 4-35 if you were also in need of that.
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  • Electric Brake Assembly Compatibility with T-44 4,400 lb AL-KO Axles
    The AL-KO company was bought out by Dexter, so he may have been thinking Dexter axles which the # K23-478-00 and # K23-479-00 would fit with the 4 bolt mounting pattern. The K23-538-00 and K23-539-00 are the correct ones for the AL-KO T-44 axle, as you mentioned but they have been discontinued. The only option is to replace the axle(s). Depending on the hub face and spring center dimensions of your existing axle and wheel bolt pattern, we may have what you need. I have included a link...
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  • Brake Assembly Recommendation for a Dexter 4,400 lb Axle with 10 inch Assemblies
    By the time you add up the cost to replace the magnets and shoes on your trailer you are at the cost (or more) for all new assemblies plus you end up saving yourself the trouble of messing with trying to install all the components. For an exact replacement for the assemblies of your trailer you would want the part # K23-478-00 for the left hand side and part # K23-479-00 for the right hand side. Replacement parts for these assemblies are even harder to find than normal assemblies due...
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  • Replacement Brakes, Bearings & Seals for AL-KO 4400-lb Axles on 5-Year-Old Tandem Axle RV
    The # K23-478-00 and # K23-479-00 Dexter brake assemblies you mentioned are not compatible with your AL-KO T-44 axle. According to my contact at Dexter (AL-KO was acquired by them), the replacement brake assemblies for your AL-KO axle are now obsolete as they have been discontinued. The only option is to replace the axles on your RV. Since we don't carry any 4,400 lb axles, the closest rated axle we have (that would also match the 6 on 5-1/2 wheel bolt pattern found on the T-44 hubs)...
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  • Can Electric Trailer Brakes for a 4,400 Pound Axle be Used in Place of Brakes for a 3,500 Pound Axle
    Electric trailer brake assemblies for both 3,500 pound and 4,400 pound axles are 10 x 2-1/4 inches and both have the 4 hole square mounting pattern. So you can use 4,400 pound axles brakes. For the left use # K23-478-00 and for the right use # K23-479-00. These are Nev-R-Adjust assemblies which means after you adjust them the first time you will not have to manually adjust them again.
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    The D44 on your axle tells me that you have a Dexter D44 axle, which has a 4400 lb capacity. Given that, and the length of the leaf spring you provided, the etrailer # e28SR would make for a good replacement spring. Increasing the capacity of your springs won't increase the weight bearing capability of your trailer. You'll still be limited by the axle capacity, the capacity of the tires, hubs, wheels, etc.
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  • Replacement Hub and Drum Assembly for 4,400 lb Trailer Axle
    Yes, the hub and drum kits for a 3,500 lb axle will work just fine with your 4,400 lb axle. The Dexter Nev-R-Adjust Electric Trailer Brake Assembly # K23-478-00 you referenced has a 10" diameter which matches with the 3,500 lb assemblies as well. For your application you can use the Easy Grease Trailer Hub and Drum Assembly for 3.5K Axles # AKHD-545-35-EZ-K. This uses inner bearing L68149, outer bearing L44649, and grease seal 58846 which has a 1.719" inner diameter and a 2.565" outer...
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  • Picking Out Trailer Brake Assemblies that Have Bolt Pattern 2-7/8 inch by 2-7/8 inch
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  • Nev-R-Adjust Brake Assemblies for a 4400 lb Dexter Axle
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    For 4,400 AL KO trailer axles the correct replacement brake assemblies are part # K23-478-00 for the left hand side and part # K23-479-00 for the right hand side. It is much easier to just replace the assemblies instead of trying to individually replace all of the components. It often ends up costing about the same as well.
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    Hello Scott, thanks for reaching out. I am sorry to say that we do not offer the Dexter 7763221 axle, nor do we offer any 4,400 lb rated axles. We may have a higher rated axle that is a suitable replacement though. If you want to look into a replacement I will need you to tell me the hub face length and the spring center distance of the current axle. Drop that in the comments below and I am happy to look into it.
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  • Replacement Brake Shoes for Roadmaster Tow Dolly
    The Roadmaster Tow Dolly # RM-2050-1 uses the Dexter Nev-R-Adjust Electric Trailer Brake Assembly # K23-479-00 and # K23-478-00. For the replacement brake shoes, you will want the right hand side # K71-699-00 and left hand side # K71-698-00.
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  • Replacement Trailer Brake Magnet for Dexter Electric Brake Assemblies
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  • Brake Assembly Replacement Recommendation for K71-125-00
    For an exact replacement for the assemblies of your trailer you would want the part # K23-478-00 for the left hand side and part # K23-479-00 for the right hand side. Brake assemblies are not what you'll use to make your braking more aggresive. For that you'd want to increase the gain setting of your brake controller as that's how you adjust the braking power higher.
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