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  6. 10 x 2-1/4 Inch Drum
Dexter Nev-R-Adjust Electric Trailer Brake Assembly - 10" - Left Hand - 4,400 lbs

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

Item # K23-478-00
Our Price: $239.06
Accessories and Parts
Shipping Weight: 12 lbs
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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 (2354)
  • Q & A (0)
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Dexter Accessories and Parts - K23-478-00

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

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





Customer Satisfaction Score:


Customer Reviews

Dexter Nev-R-Adjust Electric Trailer Brake Assembly - 10" - Left Hand - 4,400 lbs - K23-478-00

Average Customer Rating:  4.8 out of 5 stars   (2354 Customer 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:

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:

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:

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

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:

Quinn was awesome to deal with.



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:

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

7/31/2022

great no issues



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:

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



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:

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:

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:

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.

Etrailer Expert

Thomas M.

12/30/2021

I will have Customer Service reach out to you.



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:

We didn't get these parts ordered until after 3 pm and yet we still received them the very next morning. Great Job!! Our customer was in a bind, and thanks to you we have a happy customer.



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:

Product info made it easy to choose the correct part and very fast delivery. We're back in business!



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:

Fast shipping!



by:

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



by:

Parts were delivered on time as promised and brakes worked great.



by:

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



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:

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



by:

They was the right ones, easy to install. Expensive, but I needed them.


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See what our Experts say about this Dexter Accessories and Parts

  • Availability of Electric Drum Trailer Brakes with 4-Bolt Mounting Flange
    Trailer brakes should be selected based on the axle weight rating to ensure they have the correct stopping power. All of our electric drum brakes that are rated for 5200-lb axles are the 12 x 2-inch size and use a 5-bolt mounting flange. We do have 4-bolt electric brakes in the 10 x 2-1/4-inch size that are rated for 4400- and 3500-lb-rated axles, such as # K23-478-00. You can see all of these on the linked page. Just click on the 4400-lb axle rating to see the left- and right-hand brakes...
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  • Wire Gauge for the Dexter Nev-R-Adjust Electric Trailer Brake Assembly
    The wires on the Dexter Nev-R-Adjust Electric Trailer Brake Assembly # K23-478-00 are 12 gauge wires. We recommend using 10 Gauge Wire # 10-1-1 from the trailer 7-Way connector to the brakes though to help ensure enough power gets to them.
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  • What Is The Axle Capacity On 35 Ft Camper With 16 Inch Tires And 8 Bolt Rims
    Your KZ 35 ft camper should have a plate or sticker on it that will list the VIN number. The weight rating of the axle should be listed on that plate or sticker. Also, the axle could have a tag or plate on it that will list the weight capacity. If you can locate the VIN, you can call the manufacturer to find out what the axles capacity is on your camper. Another way to determine the weight capacity is by measuring the diameter of the axle. Here is a list that will show the axle weight...
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  • Is There a Difference Between Brake Assembly Kit and Individual Brake Assemblies for 4,400 lb Axle
    There is no difference between buying the brake assemblies individually or as a kit with the Dexter Nev-R-Adjust Electric Trailer Brake Kit - Left and Right Hand Assemblies # K23-478-479. Prices have to do with things like demand, and some people only need individual assemblies, so the prices can be different because technically they are different part numbers. But to get to the heart of your question, you can absolutely order the brakes individually and there is no difference. - Dexter...
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  • Can the Dexter 4.4K Nev-R-Adjust Electric Trailer Brakes Be Purchased Individually
    Yes, the Dexter 4.4K Nev-R-Adjust Electric Trailer Brake Kit part # K23-478-479 can be broken down into the right side part # K23-479-00 and left side part # K23-478-00.
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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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  • 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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  • 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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  • Nev-R-Adjust Brake Assemblies for a 4400 lb Dexter Axle
    There are a few differences between the Dexter 3,500 lb brake assemblies and the 4,400 lb brake assemblies including the brake shoes, magnets, adjusters and adjuster springs. Because the 4,400 lb brake assemblies must be able to provide more stopping power than the 3,500 lb brake assemblies they will have upgraded components. The 4,400 lb brake assemblies also have a different bolt hole pattern on the backing plate to mount to the brake mounting flange on the axle than the 3,500 lb brake...
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  • Torque Specs of Mounting Flange Bolts on Dexter Nev-R-Adjust Electric Trailer Brakes
    I spoke with a representative of Dexter who told me that the 4 mounting flange bolts on the Dexter Nev-R-Adjust Electric Trailer Brake Assembly # K23-478-00 (left hand) and # K23-479-00 (right hand) who was unable to confirm the specific torque specs of these assemblies. However, based on similar assemblies from Dexter we do know that in the past the recommended torque is between 45-70 foot lbs.
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  • Dexter Self-Adjusting Electric Brakes for a Dexter 4400 Pound Trailer Axle
    I have included a picture that shows the mounting pattern for Dexter brake assembly # K23-478-00 so you can compare it to your existing brakes. From what I could find these are the correct brakes for your trailer. The matching right side is # K23-479-00.
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    Image 1 for
  • Nev-R-Adjust Dexter 10 by 2-1/4 inch 4.4k Brake Assembly Recommendations
    We have exactly what you need. The part # K23-478-00 is a left hand Dexter 4.4k Nev-R-Adjust brake assembly that is 10 by 2-1/4 inches. For the right hand side you would need the part # K23-479-00.
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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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  • Replacement Brake Assemblies for AL KO 4,400 Trailer Axle
    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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  • Does the Dexter Nev-R-Adjust Electric Trailer Brake Assembly Kit for 4,400 Lb Axles Come with Hubs
    The Dexter Nev-R-Adjust Electric Trailer Brake Assembly Kit part # K23-478-479 or part # K23-478-00 for left and part # K23-479-00 for right does not come with a hub/drum. If this is needed you can use the Dexter Trailer Hub and Drum Assembly part # 84546UC3-EZ as most 4,400 b axles use 3,500 lb hubs/drums.
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  • Brake Assembly Recommendation for a 2004 Keystone Cougar 285 Camper Trailer
    I did some research on your 2004 Keystone Cougar and it looks like it's a tandem axle trailer with a dry weight of 7,340 lbs. Keystone almost always uses Dexter axles so the correct brake assemblies should be 4,400 lb rated 10 x 2-1/4 inch brake assemblies like the part # K23-478-00 for the left hand side and part # K23-479-00 for the right hand side. Or if you measure the diameter of your assemblies and they are 12 inches you would instead need the part # 23-459 for the right hand side...
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  • Parts Needed to Replace Hydraulic Drum Trailer Brakes with Electric Drum Trailer Brakes
    The 10x2-3/4 measurement on brakes is in reference to what drums they fit, not the mounting pattern. The 2-3/4 inch measurement you are getting is indicative of 10x2-1/4 inch brakes like # K23-478-00 that you have referenced. To measure for the size brake assembly you need you will measure the inner diameter of the drum and the width (both where the shoes/linings make contact with the drum). The matching right hand side brake assembly is # K23-479-00. But if you have 3,500 pound axles...
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    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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  • 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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  • Brake Assembly Replacement Recommendation for Dexter Assemblies 36-19-47
    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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  • 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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  • Do I Have to Replace My Dexter Brakes With Dexter Brakes
    If you really liked the Dexter brakes and want to continue to use that brand I can help you find exactly what you are looking for. Otherwise, no, you do not have to replace the electric brakes on your trailer with the same Dexter brand. The Nev-R-Adjust Electric Brake Assemblies, part # K23-478-00 LH (driver side) and part # K23-479-00 RH (passenger side), from Dexter that you referenced are great options since you do not have to keep adjusting the brakes. These assemblies are 10 inches...
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  • Picking Out Trailer Brake Assemblies that Have Bolt Pattern 2-7/8 inch by 2-7/8 inch
    The 2-7/8 inch square bolt pattern that you need is a very common bolt pattern for 4-bolt brake assemblies that are 10 inch in diameter. The # 23-454 that you referenced uses a smaller bolt pattern at 2-13/16 inch by 2-13/16 inch which was common for brake assemblies made before 2009. The # K23-478-00 that you also referenced does not use a square bolt pattern at all so what you'd really be in need of is # 23-27 for the right hand side and # 23-26 for the left hand side.
    view full answer...
    Image 1 for
  • How to Determine Axle Capacity of Keystone Cougar High Country 5th Wheel
    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.
    view full answer...


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