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  4. Electric Drum Brakes
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  6. 12-1/4 x 5 Inch Drum
Dexter Electric Trailer Brake Assembly - Self-Adjusting - 12-1/4" - Right Hand - 12K

Dexter Electric Trailer Brake Assembly - Self-Adjusting - 12-1/4" - Right Hand - 12K

Item # 23-443
Our Price: $356.17
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Accessories and Parts
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Shipping Weight: 22 lbs
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Dexter Electric Drum Brakes Accessories and Parts - 23-443
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12-1/4" x 5" Passenger's-side electric trailer brake assembly fits 12,000-lb axles. Mounting flange has 7-bolt pattern. Self-adjusting brakes require little maintenance. Fits 15" or larger wheels. 1-800-496-5010 to order Dexter accessories and parts part number 23-443 or order online at Free expert support on all Dexter products. Great prices and Fastest Shipping for Dexter Electric Trailer Brake Assembly - Self-Adjusting - 12-1/4" - Right Hand - 12K. Accessories and Parts reviews from real customers.
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  • Reviews (6)
  • Q & A (0)
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  • Why etrailer?

Dexter Accessories and Parts - 23-443

  • Trailer Brakes
  • Electric Drum Brakes
  • Brake Assembly
  • 12-1/4 x 5 Inch Drum
  • Dexter
  • RH
  • Self Adjust
  • 12000 lbs

12-1/4" x 5" Passenger's-side electric trailer brake assembly fits 12,000-lb axles. Mounting flange has 7-bolt pattern. Self-adjusting brakes require little maintenance. Fits 15" or larger 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
  • Self-adjusting 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
  • Mounting bolts and hardware sold separately
  • Made in the USA


  • Application: most standard hub-and-drum assemblies, including Dexter and Lippert (LCI)
  • Configuration: right hand (passenger's side)
  • Dimensions: 12-1/4" diameter x 5" wide
  • Mounting flange bolt pattern: 7 bolt
  • Wheel size: 15" or larger
  • Axle rating: 12,000 lbs
  • Limited 5-year warranty

K23-443-00 Dexter Electric Brake Assembly, RH 12-1/4" x 5" - Self Adjust - 12,000 lbs

Replaces 23-443

Customer Reviews

Dexter Electric Trailer Brake Assembly - Self-Adjusting - 12-1/4" - Right Hand - 12K - 23-443

Average Customer Rating:  4.7 out of 5 stars   (6 Customer Reviews)

12-1/4" x 5" Passenger's-side electric trailer brake assembly fits 12,000-lb axles. Mounting flange has 7-bolt pattern. Self-adjusting brakes require little maintenance. Fits 15" or larger wheels.


These brake kits were exactly as described. Easy to install. Just bolt on and go!


Worked great easy to install now my trailer stops my truck


Purchased for our stock. Product matches perfectly and shipping was very prompt.


excellent customer service!!




See what our Experts say about this Dexter Accessories and Parts

  • What Would Cause Brand New Trailers Brakes to Feel Weak
    How far did you adjust them? Since some adjustment helped noticeably it would seem that more adjustment would get you where you need to be. Typically you want to tighten them until there's a noticeable drag that you can hear as you turn the wheel by hand. It's also possible the brake assemblies are self-adjusting which would mean that with every application they'll click tighter and tighter until they are fully adjusted and would be as powerful as you'd need. What brake controller are you...
    view full answer...
  • Dexter 12,000 lb Axle Replacement Brake Assemblies
    For 12,000 lb Dexter axles we do have the correct brake assembly replacements with the part # 23-442 for the left hand side or the part # 23-443 for the right hand side.
    view full answer...
  • After Replacing Brake Magnets Trailer Brakes Are Weak
    Nine times out of ten, the issue is that the brakes need to be adjusted. You will need to adjust the brakes out to where you can hear a slight but constant drag of the pads on the drums. If the brakes are properly adjusted then it could be that the new magnets are not the right size for the brake assemblies or the assemblies themselves are not rated high enough for the 12K axles. For 12K Dexter axles you should be using # 23-442 for the left side and # 23-443 for the right side. Check...
    view full answer...
  • Comparison of Dexter Axle and Axle Technology 12,000 Pound Brake Assemblies
    Dexter Axle has the brand recognition so that will definitely weigh more in their favor. Axle Technology isn't as well known even though their parts are very common on trailers but they're mostly used buy trailer manufacturers. So their parts often come on trailers but aren't as commonly used when someone is buying replacement parts. The Axle Technology brakes, like # AKEBRK-12R for the right and # AKEBRK-12L for the left, are good quality brakes and some of our installers here even...
    view full answer...
  • Replacement Brake Shoes for Dexter 12k Axles
    To replace the brake shoes on your Dexter 12k axle you will want the Right Hand Shoe and Lining for Dexter 12-1/4" x 5" Electric Brake Assembly item # BP04-375 and the Left Hand item # BP04-365. These shoes are the replacements for the Right Hand Dexter Electric Trailer Brake Assembly item # 23-443 and the Left Hand item # 23-442.
    view full answer...
  • Brake Assemblies Compatible With Dexter 12,000 lb Axles
    Yes, the Electric Trailer Brake Assembly # AKEBRK-12R for the right hand and # AKEBRK-12L For the left had are confirmed to fit your Dexter 12K Axles. They are comparable to the Dexter Assemblies # 23-442 and # 23-443. You may also be interested in the Brake Adjustment Spoon for Drum Brakes # W80630 to adjust your brake assemblies.
    view full answer...
  • Replacement Brake Assembly and Oil Seal for Dexter 00828510 Brake Drums
    It looks as if you have the # 8-285-10UC3-A Dexter Oil Bath hubs. Thanks for sending the photo! Those hubs take a 12 x 3-3/8 inch brake assembly, I'd recommend a self-adjusting brake assembly kit like # K23-532-533-00 which are compatible with a 4 bolt brake flange. This includes the right and left brake assembly. The correct oil seal for your hubs is # 10-63, which has a 2.25 inch ID and a 3.376 inch OD. You can see some product videos for these product by clicking the provided links.
    view full answer...
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Info for this part was:

Employee Mike L
Expert Research:
Mike L
Employee Jameson C
Expert Research:
Jameson C
Employee Lindsey S
Updated by:
Lindsey S
Employee Wilson B
Updated by:
Wilson B
Employee Alexander C
Updated by:
Alexander C
Employee Jeff D
Installed by:
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