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Dexter Electric Brake Assembly for 4 Bolt or 5 Bolt Flange - 12" - Left Hand - 6,000 lbs

Dexter Electric Brake Assembly for 4 Bolt or 5 Bolt Flange - 12" - Left Hand - 6,000 lbs

Item # 23-105-09
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Accessories and Parts 23-105-09 - Brake Assembly - Dexter
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12" x 2" Driver's-side electric trailer brake assembly fits 6,000-lb axles. Mounting flange has AL-KO/Hayes 4-bolt or standard 5-bolt pattern. Fits 14-1/2" to 16" wheels. 1-800-940-8924 to order Dexter accessories and parts part number 23-105-09 or order online at Free expert support on all Dexter products. Great prices and Fastest Shipping for Dexter Electric Brake Assembly for 4 Bolt or 5 Bolt Flange - 12" - Left Hand - 6,000 lbs. Accessories and Parts reviews from real customers.
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  • Reviews (11)
  • Q & A (0)
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Dexter Accessories and Parts - 23-105-09

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

12" x 2" Driver's-side electric trailer brake assembly fits 6,000-lb axles. Mounting flange has AL-KO/Hayes 4-bolt or standard 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: AL-KO/Hayes 4-bolt or standard 5-bolt
  • Wheel size: 14-1/2", 15" or 16"
  • Axle rating: 6,000 lbs
  • Limited 5-year warranty

023-105-09 12" Dexter Electric Brake Assembly, LH - 6,000 lbs - 4-Bolt or 5-Bolt Flange

Customer Satisfaction Score:

Customer Reviews

Dexter Electric Brake Assembly for 4 Bolt or 5 Bolt Flange - 12" - Left Hand - 6,000 lbs - 23-105-09

Average Customer Rating:  4.6 out of 5 stars   (11 Customer Reviews)

12" x 2" Driver's-side electric trailer brake assembly fits 6,000-lb axles. Mounting flange has AL-KO/Hayes 4-bolt or standard 5-bolt pattern. Fits 14-1/2" to 16" wheels.


Sorry. I never could get them to fit. They are still setting in my garage, and I had to buy new axles.

This brake will fit with a 12 x 5 hub and uses a mounting bolt pattern for the AL-KO Hayes 4 bolt or the standard 5 bolt. It is rated at 6000 pounds.
-- Etrailer Expert Jenny N - 10/06/2022


Was able to find a Electric break product with four whole mounting screws. Other companies do not have! Easy ordering and shipping right on time . Keep up the good work!


Finally found a 4 mounting bolt brake k it!


Parts were an exact fit on a 1985 stock trailer. Good quality and fast shipping


A little pricey but as described!!!


Fits Hayes hard to find off four pattern! The






Very fast delivery and great quality!


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
    view full answer...
  • 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.
    view full answer...
  • Available 12 x 2-Inch 6K-Rated Electric Trailer Brakes with 4-Bolt Mounting Pattern
    All of our 12 x 2-inch 6K-rated electric trailer brakes are shown on the linked page. Most of these use the 5-bolt mounting pattern but a few Dexter products include holes for BOTH bolt patterns, both 5-bolt and the 4-bolt Hayes/AL-KO pattern, parts # 23-105-09 (left) and # 23-106-09 (right). We also offer them as a set, part # 23-105-106-09.
    view full answer...
  • Voltage at Brake Magnets is 8 Volts with Brake Controller Set to Maximum
    It should be getting close to 12 volts if the power output is set to the maximum on the brake controller. Some brake controllers will not work properly if they are titled or turned to the side or if it has a leveler knob that is not level. Check those things first since they are the easiest. First, sever the blue wire behind the the brake controller a few inches and use your meter to test the end coming from the brake controller. With the output set to the maximum it should read at least...
    view full answer...
  • What Dimensions Are Needed When Replacing Electric Brakes On Trailer
    You will need to take a couple of measurements to find the correct brake assemblies for your 1988 enclosed trailer. You will need to find a brake assembly that works with your brake mounting flange and also with the drum diameter and depth. I have attached a photo with the areas noted that need to be measured. I have attached a link to a helpful article that explains what is needed to add electric brakes to a trailer, and also a video that shows how to remove and replace trailer brake...
    view full answer...
  • Diagram Recommendation for Trailer Brakes
    I attached two diagrams that show how a trailer typically wires up as well as how the wiring usually runs to trailer brakes.
    view full answer...
    Image 1 for Image 2 for
  • Trailer Brake Magnets Won't Activate With Proper Voltage To Them
    It sounds like you have power to the magnets which is a good start. You want to make sure the ground wire from the brake assembly or brake magnet has a good connection to a clean, bare metal surface on the trailer frame or ground to the trailer's main ground. It is also a good idea to check to make sure there are not any visible signs of wear or damage on the magnets. I would check the grounds though because it sounds like your issue considering you have power to the magnets and you can...
    view full answer...
  • Can Brakes be Added to the Second Axle of a Tandem Axle Trailer
    Yes, you can add additional brakes to the non-braking axle of your trailer if the axle has brake mounting flanges welded to it. If the axle does not have brake mounting flanges when they will have to be welded on. This is a precision job that requires a special jig and someone with experience in welding on brake mounting flanges. I have included a link to the brake mounting flanges we carry. I have also included a link to our help article on adding electric drum brakes to a trailer. If...
    view full answer...
  • How to Pick Out Replacement Hubs and Brake Assemblies for Load Rite Boat Trailer
    If we can get you set up with the correct hubs they'll have all the needed seals, races, and bearings. And once we know what hubs you need we'll be able to pick out the correct brake assemblies. In order to pick out the correct hub assembly for a 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...
    view full answer...
    Image 1 for
  • Can Trailer without Brakes Have Brakes Installed
    We do have the parts you'll need to add brakes to your trailer that does not have any currently. It will require you to know what spindle dimensions you have currently to be able to pick out the hub drums and then from there pick out the correct brake assemblies. I attached a guide for adding brakes to a trailer for you to check out as well.
    view full answer...
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  • Info Needed to Pick Out Replacement Hub Bearings and Brake Assemblies
    Can you get me more axle info on your trailer? With the axle capacity and brand I can most likely get you what you need. Otherwise you'll have to pull a hub and get me either the bearing numbers out of the hub or the dimensions of the spindle where the bearings ride like in the picture I attached. I also attached a link down below that covers adding brakes to a trailer as well for you to check out.
    view full answer...
    Image 1 for
  • Brake Assemblies that Fit Hayes 7k Brake Assemblies with 4-Bolt Mounting Pattern
    The # 23-105-09 would work well since the dimensions and bolt pattern are correct for your Hayes 7k setup. Typically brake assemblies in this size will have weight ratings that range from 5,200 up to 7k so the # 23-105-09 will work well as they match size and bolt pattern.
    view full answer...
  • How to Ground Brake Assembly Magnet on Older Camper
    I'd ground the magnet to the trailer frame as close as possible to the magnet, but also run a ground wire from that screw to the main ground on the trailer tongue. Where the ring terminals ground to the trailer frame, make sure that there's a dime sized spot of bare metal around the hole, and use a star washer between the ring terminal and the trailer frame to bite into the metal for a good connection. Once installed, hit the ground screw with a quick splort of rust resistant spray paint...
    view full answer...
  • Replacement 12 x 2 Inch Electric Brake Assemblies for K-H KAE-96002-02
    It looks like the studs in your brake assembly are closer together (center to center) at the bottom. If the center to center bolt spacing matches the photo I've provided, then the # 23-105-09 you'd looked at would be the correct replacement brake assembly that's compatible with a 12 x 2 inch (inside depth and diameter) brake drum. I've linked to a product video that you might find helpful.
    view full answer...
    Image 1 for
  • How To Determine if Dexter 12x2 Electric Brake Assembly # 23-106-09 Will Fit 1982 Silver Streak RV
    The same answer would apply. The brake assembly # 23-106-09 is designed to fit a Hayes/AL-KO or Dexter axle with either the 4-bolt or 5-bolt mounting flange. These are 12 x 2 inch brakes. To measure the drum you will measure the inside diameter. It should be 12 inches. Then measure either the width of the old pad or the width of the surface it would contact on the inside of the drum. That should be 2 inches. These brakes are designed for 6,000 pound axles but could also be used on a 5,200...
    view full answer...
  • Need 12 x 2-Inch Electric Trailer Brakes with 4-Bolt Mounting Flange
    We do offer 12 x 2-inch electric brake assemblies with a 4-bolt mounting flange. Dexter parts # 23-106-09 and # 23-105-09 are right- and left-hand brake assemblies that have dual mounting hole patterns, both 5-hole and 4-hole. These brakes are rated for use with 6000-lb axles.
    view full answer...
  • 4-Hole Spacing Measurements on Dexter 12 x 2 Inch Electric Trailer Brake Assemblies
    The mounting holes (4 hole pattern) on Dexter brake assembly, # 23-106-09, are 3.09 inches on center for the top two holes and 2.55 inches apart on center for the bottom 2 holes. Top to bottom they are 3.40 inches apart on center. The holes can accommodate a 7/16 inch bolt size. So it appears to be a match with the mounting plate you have. The matching left hand assembly is # 23-105-09.
    view full answer...
  • Need Replacement Electric Brake Assembly For Old Flat Bed Trailer
    I walked out to our warehouse and pulled the Dexter 12 Inch Electric Brake Assembly # 23-105-09. It appears you do have a 12 inch brake assembly, and the measurements you provided match that of the Dexter Brake Assembly. The # 23-105-09 is the left side brake assembly, for the right side of your trailer, you will need Dexter 12 Inch Electric Brake Assembly # 23-106-09. This Dexter brake assembly will fit a 4-bolt brake mounting flange. Checkout the short video I produced for you showing...
    view full answer...
  • Replacement Electric Brakes for a 1980 Dugan Stock Trailer
    The brakes in the picture look like they have the offset 4 bolt pattern that Hayes/AL-KO brakes use. On that bolt pattern the top two holes are spaced further apart than the bottom 2 holes. If they are 12 x 2 inch brakes then we have some with that bolt pattern: # 23-106-09 for the right side and # 23-105-09 for the left. We do not have just the magnets for your existing brakes though.
    view full answer...
  • AL-KO 6k Brake Assembly Recommendation with Offset 4 Bolt Mounting Pattern
    We have a set of brake assemblies fit to replace your 12 inch x 2 inch AL-KO electric brakes. The Dexter # 23-105-09 left-hand side, # 23-106-09 right-hand side. These brake assemblies are rated for 6,000 pounds per pair like your axle and have the offset 4 bolt mounting pattern. The # 23-105-09 and # 23-106-09 will mount on either the 4-bolt AL-KO/Hayes or standard 5-bolt flange.
    view full answer...
    Image 1 for
  • 12 inch Diameter Trailer Brake Assembly Recommendation with 4 Bolt Mounting Pattern
    We have the Dexter Brake Assemblies part # 23-105-09 and # 23-106-09 which are 12 inch brake assemblies that have both a 4 and 5 bolt mounting flange.
    view full answer...
  • How to Determine if Trailer Brake Assemblies 23-106-09/23-105-09 Fit Trailer
    I can help you find the right assemblies, but I do not know exactly which ones you have on your trailer. To pick out the correct brake assemblies for your trailer you need to know a few things. You will want to measure the inner diameter of your hub/drums and the depth of the drums to determine what brake assembly dimensions you need. For example the part # 23-105-09 is a 12 inch by inch thick brake assembly. You also want to determine what the bolt pattern is of your assembly mounting...
    view full answer...
    Image 1 for
  • 12" x 2" Trailer Brakes Assemblies Rated for 6,000 lbs With 4 Bolt Mounting Flange Pattern
    There are 12" x 2" trailer brakes available that are rated for 6,000 lbs and have a 4-bolt mounting flange pattern. The Dexter Electric Brake Assembly will work with 14-1/2", 15" or 16" wheels; for the left-hand side you need # 23-105-09 while the right-hand side is # 23-106-09. I have added links to video reviews of each brake assembly for you to take a look at.
    view full answer...
  • Diameter of the Center Hole of the Trailer Brake Assemblies # 23-105-09 and # 23-106-09
    The center hole of the brake assemblies # 23-105-09 and # 23-106-09 measures 3-3/16 inches across.
    view full answer...
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