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  4. Electric Drum Brakes
  5. Brake Assembly
  6. 12 x 2 Inch Drum
Dexter Electric Trailer Brake Assembly - 12" - Left Hand - 6,000 lbs

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

Item # 23-105
Our Price: $93.59
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Accessories and Parts
Shipping Weight: 15 lbs
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23-105 - LH Dexter Trailer Brakes
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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. Fits 14-1/2" to 16" wheels. 1-800-940-8924 to order Dexter accessories and parts part number 23-105 or order online at Free expert support on all Dexter products. Great prices and Fastest Shipping for Dexter 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 - 23-105

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

12" x 2" Driver's-side electric trailer brake assembly fits 6,000-lb axles. Mounting flange has a 5-bolt pattern. Fits 14-1/2" to 16" 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
  • 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" or 16"
  • Axle rating: 6,000 lbs
  • Limited 5-year warranty

Exploded Electric Brake Assembly

K23-105-00 Dexter Electric Brake Assembly, LH - 6,000 lbs

Replaces 23-105

Customer Satisfaction Score:

Customer Reviews

Dexter Electric Trailer Brake Assembly - 12" - Left Hand - 6,000 lbs - 23-105

Average Customer Rating:  4.8 out of 5 stars   (171 Customer Reviews)

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


Quality product and strainer staff are knowledgeable and answered all of my questions



So far everything is working as they should

Etrailer Expert

Mike L.


@Adrian Awesome! We're glad to hear that your Dexter # 23-105 brake assemblies are working well for you.


Excellent service!
Getting ready to place
another order!


The Original Dexter brand are better quality than the generic replacements.


I replaced the electric brakes on my dump trailer, and bought the Dexter 6000 lb set, fully assembled and ready to bolt on. They fit perfectly and are of the quality that I expected for American made products. I am very happy with my purchase.


I bought a used toy boxa and quickly found out that the breaks were mowed down. I had trip planned to Yellowstone so, I needed these fast. They showed up on time and were the right part. I put them on drive from SoCal to Yellowstone which is 1500 miles. I re-adjust the break one morning in Yellowstone and haven’t looked back. Thank you!!!! Here is a picture of my trailer in Idaho. We camped here one night before we got to Yellowstone.


Super fast delivery. Exactly what I needed for the RV.


Parts all fit properly and worked great. Good product.



The brakes have been in for a year and work great. Installation was really easy. They came well packaged and with everything needed.


EXCELLENT...... START TO FINISH. Fantastic service, great prices, quality products. Here's a before and after picture. It only took 30 minutes and basic tools to make the replacement. So much better than trying to clean up the old rusty one. Thanks again, Bill Borland in Michigan


Easy to instal and we’ve had no problems thus far.


Less work than buying all the parts separately. Parts came in good physical condition. However, on 1 of the 4 assemblies, the adjuster and adjuster spring was loose in the packaging but was easily made whole.


I checked here locally on the cost of trailer brake shoes and magnets and found the price of etrailers' complete brakes and magnets assembled on a new backplate was by far less expensive. After removing the drum, this meant near zero labor, just five nuts to remove and replace the backplate then splice the wires. And another BIG plus, free shipping on an over thirty pound shipment. Wow so easy...And now I have all new brakes, magnets and all the other parts too, just seems to good to be true. I will continue to tell everyone about this labor saving and great priced product. Thank you

Edward S.


Now a year later and 3,500 miles without any problem or issues. Looking back I am very pleased with my purchase and the excellent service provided by eTrailer. Thanks so much. Stay safe...


This part was a perfect replacement for the original which had failed after 18 years of service.


First shipment of two 23-105, and two 23-106 arrived with grease contamination soaked into the lining on two assemblies and impact damage to the lining on a third. etrailer shipped three replacements promptly. Sticker on carton said "quality checked by Alex G. Perhaps Alex should find another line of work.
My major issue however is that after installing these I had to crank the power on my controller to maximum to achieve any helpful braking and can't even come close to wheel lockup which you need to adjust properly. I noticed that the new magnets were oval shaped unlike my old ones which were longer and flat on top and bottom (like the magnets pictured on the 7000lb assemblies). I assumed the style had simply changed since my magnets were made and I had no reason to look at 7000lb brakes as my axles are tagged 4400lb. All instructions on etrailer site state to select the brakes by the weight of your trailer which in my case is 9000lbs. Surely four 6000lb brake assemblies would be overkill..WRONG! My axles are 7000lb "de-rated" to 4400 but they obviously had 7000lb brakes. This caveat has caused me to install the wrong brake assemblies! If you are replacing your brakes and wish to duplicate your stopping power, do NOT listen the the "expert" answers on here. Compare the shape of the magnets. These small oval magnets are not as strong and braking will suffer. I still feel as though I should be able to achieve wheel lockup with these but not the case and since they have now been used, I can not return them.

Etrailer Expert

Patrick B.


Double check the adjuster down at the bottom of the brake assemblies. That adjuster should be used when the brakes are first installed. Use the adjuster to open the assemblies so that theyre putting a slight and even amount of drag on the wheel as you spin it by hand. If you have used the adjuster as outlined above and the brakes still will not engage properly, give us a call at 800-298-8924 and our Techs will help diagnose.


the rep
s were will helpful and the
shipping was fast. ABD THEY WERE VERY polite ..will order again from etrailer


I was replacing the brakes on a 72 Airstream Argosy and needed a magnet but found out I could get whole new assemblies for $2.00 more! That's a deal! Just make sure if your backing plates have attached studs that you pick up the necessary grade 5 or 8 bolts, nuts and lock washers too.

Terry N.


Worked just fine. Sold the trailer


I am writing this very favorable review of my online shopping experience with etrailer. Recently I had to replace the brakes, hubs, wheels and tires on my travel trailer. Please keep in mind that I am a 65 year old man without a lot of experience with online shopping. Never-the-less, I decided to give it a try in hopes of saving some money. To my surprise, etrailer made the experience very easy and painless. Before I placed my order on line, I had a question about one of the items on my shopping list, so I placed a call to them. I spoke with a very lovely and patient Customer Service Representative by the name of Michelle S. She was very helpful in answering my questions and encouraged me to call her back directly when I was ready to place my order; and so I did. During the shipping process, she kept me informed through emails the status of my order and everything arrived on time and in great shape. I truly appreciate the personalized services I received doing business with etrailer. They truly removed all of the uncertainty and nervousness of shopping online.


Excellent service over the phone, arrived quicker then told when I ordered. Real easy to replace, 5 mounting nuts and the 2 wires for the brake hook-up. Can't beat the price, a lot better ordering the whole brake assembly then just the brake shoes. Hardest thing was dealing with the messy wheel bearings. As always, GREAT JOB ETRAILER.


Didnt realize how bad the brakes were until they were replaced! Now, the trailer actually stops!!!

Jeff M.


Perfect! The brakes work as they should. Perfect fit!!


I have just received my new dexter brake assemblies and have not installed them yet. They look like they are very well built and the shipping was very fast and would recommend etrailer to anyone who needs brake replacement.


It fit my 89 Airstream perfectly. Original unit broke a spring and totally self destructed. This and the brake drum with bearings fixed everything. About $50 cheaper than buying from my local brake shop who I have dealt with for 30 years.


I had ordered some parts online to rebuild the suspension on one of our trailers. Customer service called me a short time later to inform me that they were out of stock on some items, they asked if it was possible to substitute some items. She was able to find the exact parts I needed in a different kit. The parts came within 3 days, very well packed, and they fit perfectly! This is the 3rd time I've ordered from etrailer and they have exceeded my expectations every time. EXCELLENT customer service and quality parts.


Brake assemblies seem to be of equal quality to original equipment. One of the front shoes on one unit looked like it had been trued to round and was thinner on one end than the other. I don't know if it will have a shorter life because of this or will wear better because it is more round. The grease seals are fin also.


Dexter electric brake assemblies arrived in 3 days, free shipping and they fit great. I could have gotten them in stock locally, but they were an aftermarket brand and cost more. Etrailer has the best prices and service, anywhere!!!!!! A++++++


Wonderful service, exact replacement, delivered promptly!


This was not the first time I have purchased from "". The first time being several years ago. I purchase may products on line and honestly this company/source for the products they offer and the prices, processing, shipping and support they provide is very honestly as good as I have ever encountered. Their staff are completely helpful and "KNOW" the products they sell. I have my own RV and have hauled/delivered RV's Commercally for years, through out the lower 48, Canada and Alaska.

No, I don't write reviews very often and only after I have honest experiences with the sources that enable me to evaluate them, good or bad.

No, I don't write reviews very often and only after I have honest experiences with the sources that enable me to evaluate them, good or bad. " />

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See what our Experts say about this Dexter Accessories and Parts

  • What is the Difference Between Dexter Trailer Brake Assemblies # 23-105-09 and # 23-105
    The difference is the mounting pattern. The Dexter # 23-105-09, brake assembly that you have referenced will mount to either an AL-KO/Hayes 4 bolt or a standard 5 bolt mounting flange. The # 23-105 just fits the standard 5 bolt pattern. Otherwise the specs are the same: 12 inch by 2 inch 6,000 pound axles Manual adjust Left hand side
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  • Comparing Trailer Brake Assembly # 23-105 and # 23-105-09
    Trailer brake assembly # 23-105-09 is specifically designed to fit AL-KO/Hayes axles which are not as common as other axles. Brake assembly # 23-105 fits Dexter axles and other more common axles. If you have an AL-KO/Hayes axle, then I would go with them.
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  • Which Way to Turn Brake Adjuster to Tighten Trailer Brakes
    Turning the wheel so that the teeth on the wheel move upward will expand the brake shoes against the inside of the brake drums. Moving the teeth downward will contract the brake shoes. You can see the adjustment procedure by clicking on the video link I've provided. Simply fast forward to the 4:24 minute mark.
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  • Troubleshooting Electric Trailer Brake Assembly That is Running Hot
    I would recommend completely ruling out the bearings by closely examining them and the spindle for discoloration caused by overheating. If you have determined that it is the brakes that are hot, and not the hub itself, I would recommend readjusting the brake assembly. What you are experiencing could certainly happen if the brake assembly was out of adjustment. To adjust the brake assembly, jack up trailer and secure on adequate capacity jack stands. Check that the wheel and drum rotate...
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  • Troubleshooting Trailer Hubs Where One is Hotter Than the Other
    If you turn the wheels by hand do you notice one wheel dragging more than the other? If so that would indicate additional friction which would create more heat. I imagine you'll find this to be the case. If the brake adjustments are the same and are good the other thing to check would be that the castle nut isn't too tight on the hotter wheel. Also make sure the grease seal is intact on the hotter hub and that the grease didn't leak out.
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  • Availability of Dexter 23-105 6k Trailer Brake Assembly
    The brake assembly you are in need of is the part # 23-105 which is a left hand brake assembly for a 6k axle.
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  • Info Needed to Add Brakes to a Trailer Axle
    I attached a link to a page that will walk you through the entire process of picking out components to add brakes to a trailer but basically you need to start with the axle capacity and the wheel bolt pattern. With that said there isn't any way we can recommend to safely exceed the towing capacity of your truck.
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  • How to Pick Out Brake Assemblies for a Trailer with Idler Hubs
    Do you have idler hubs on your trailer currently? The way to pick out brakes for a trailer that has idler hub and a brake mounting flange is to first find the correct hub drum that fits the spindle and then go with the correct size/rated assemblies for those drums. To pick out the drums I'd need to know the diameters of the spindle where the bearings ride or the bearing numbers out of the hub as well as the bolt pattern of the hub where the wheel attaches. We can then pick out brake assemblies...
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  • How Do Trailer Brake Assemblies Adjust
    Use a brake adjustment tool to turn the starwheel on the adjuster to expand the brake shoes until the wheel is very difficult to turn by hand. Then back off the starwheel in the other direction, about 10 clicks until the brakes drag slightly. Make sure all brake assemblies are adjusted in the same manner. Check out the video (see link). Beginning at the 4:23 mark, our installer shows how to adjust your trailer brakes.
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  • Troubleshooting New Electric Trailer Brakes That Engage Only Weakly
    Brand new electric (and hydraulic) trailer brakes, even adjustable types, can take some time to settle in after installation. In general it is best to do several test runs at 40 mph before adjusting the brakes. You will want to hook up your truck and trailer, drive around and apply the manual override from your in-cab brake controller. Set the controller power and/or boost to maximum. You will want to start around 40 mph and use ONLY the manual override to slow down the truck and trailer....
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  • Is it Normal to Hear Trailer Brakes Clicking
    The clicking you are hearing is normal. That's actually your brake controller sending a split second of amperage on the brake output circuit to see if a trailer is connected. This is basically just the test the controller performs to know if a trailer is connected. This would be unrelated to your bearing issue.
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  • How to Adjust Electric Drum Trailer Brakes
    You are correct. On drum brakes that do not self-adjust, you would manually adjust the brakes using the star wheel on the assembly. Once you cannot turn the wheel, you turn the star wheel the other direction until the wheel can spin and you hear a slight constant drag on the brakes. If the brakes are not constantly dragging it could indicate wear on the shoes or drum. I have included a link to a video and at about the 4:39 mark our installed begins adjusting the brakes.
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  • Troubleshooting Trailer Brakes Stopped Working with Brake Pedal on Truck
    If the brake controller on your Silverado 2500 stopped working with the brake pedal then there is likely either an issue with the connection between the controller's red (brake input) wire and the brake switch wire in the truck or you might just have a blown stoplight or CHMSL fuse. You can first try looking through your truck's owner's manual to find the location for those fuses to make sure they are in good condition, replacing as needed. If this doesn't resolve the issue then you...
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  • What is the Difference Between Dexter 6k and 7k Electric Drum Trailer Brake Assemblies
    Electric drum brake assemblies for 6k and 7k axles both use the same 5 bolt mounting pattern. The 7k brakes will have a stronger magnet and will provide more braking. If used on a 6k axle a 7k brake assembly can be too aggressive but it could be used. The literature for the trailer should indicate the axle capacity somewhere. There may also be a sticker or plate on the axle with the capacity. It might also be stamped into the metal of the axle. I have included links to the 12 x 2 inch...
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  • Troubleshooting Integrated Brake Controller that Only Works With Override Lever
    Sounds like the stoplight circuit signal isn't making it's way to the integrated brake controller of your truck so it's stopped working with the brake pedal. Since this is an integrated controller most likely the problem is a blown third brake light fuse. Replacing the fuse should fix the problem.
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  • Can Nev-R-Adjust Brake Assemblies Be Mixed with Manual Adjust Brake Assemblies on Trailer
    As long as all of your brake assemblies are adjusted properly it wouldn't matter if some of them were manual adjust and other were Nev-R-Adjusts. If the manual adjust brakes aren't kept in proper adjustment the Nev-R-Adjust assembly will end up wearing out quicker as more of the braking will be down with this assembly since the others wouldn't be as powerful. Ideally you would want to have the same on all wheels. I attached a page that has all of the brake assemblies we carry. You will...
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  • Recommended Torque Value For Installing Brake Assembly to 3500# Axle
    My contact at Dexter Axle tells me that when installing a brake assembly to the backing plate of a 3500 lb axle, the bolts should be tightened in a criss-cross pattern to between 45-70 foot lbs.
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  • Why Would Electric Trailer Brakes Lock Up When Hub is Spun Backwards
    There's something mechanically wrong with the brake assemblies or you have a drum that needs to be replaced or turned. Electric trailer brakes should not lock up when turned in reverse. Especially if there's no current involved on any of the wiring. That means it's a mechanical problem. Something in the linkage much be catching as the hub turns which is then pushing the shoes apart and activating them.
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  • Pilot Hole Size on Dexter Electric Trailer Brake Assembly 12" 6K
    The center hole on the Dexter Electric Trailer Brake Assembly part # 23-105 is 3-3/16".
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  • Do New Electric Drum Trailer Brakes Need to be Adjusted
    Yes, you will need to adjust the new trailer brakes. You will need to adjust out the shoes until there is a slight but constant drag of the pads on the drum when you turn the wheel. I linked a video to the right and if you fast forward to about the 4 minute 40 second mark you can see how the adjustments are done and how much drag you should have left on the hub.
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  • How to Determine Proper Brake Assemblies for Chaparral Lite 5th Wheel
    I don't have a reference source that would tell me what brake assemblies were used on your fifth wheel, so to determine the correct brake assemblies needed, we'll need to do a bit of detective work. The brake assemblies you need will depend on the diameter and depth of your brake drums, the number of bolts the existing brake assembly uses to mount to the brake mounting flange and the axle's capacity. To get the correct size (10 x 2-1/4 or 12 x 2 inch are the most common) you would measure...
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  • How to Determine Correct Hub/Drums for Pace Trailer
    In order to pick out the correct hub assembly for Pace trailer you are going to need know a few key pieces of information. The first thing you will need to know is the bolt pattern of your hubs. This is so you get a hub that is compatible with your wheels. I attached an FAQ article on determining bolt pattern for you to check out. Next thing you will need to know is what spindle you have on your trailer. In order to do that you can either get the inner and outer bearing numbers from a...
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  • Where to Start When Converting Boat Trailer from Hydraulic Drum to Electric Drum
    We can definitely help but I need to know the capacity of the axles you have so that we can pick out the correct parts needed. You can check the axles for a tag that will have the capacity or you can get me the diameter of the axle. I also attached a link to a page that has a guide on adding electric drum brakes to a trailer for you to check out as well.
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  • Troubleshooting Trailer Brakes That Will Not Disengage
    It sounds like you may be having some wiring issues; but first, start by checking your connectors to see if there is any corrosion that may be hampering their functionality and keeping your brakes engaged. To disengage your brakes, cut the power wire and that should disengage them. Then go over the wiring to try and look for any that are crimped, broken, or otherwise damaged. If you cut the wires that are feeding your brakes power and they still do not disengage, you will need to go to...
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