• About Labwork：
  • Labwork Is An Auto Parts One-stop Solution Brand Of More Than 10 Years, Which Specializes In Providing Global Customers With Top-notched Quality Automotive Parts & Accessories . If You Need Any Auto Parts, Its Enough To Come To Labwork.
  •  
  • Features：
  • Made of the High Quality Manufactured to Meet or Exceed Specifications.
  • Heavy-Duty Compatibility: Designed for 12,000–15,000 lb trailer axles with 12-1/4" x 5" drum size and 7-hole brake flanges. brake Drum 9-28 and LCI 12K axles；Part Number: EB-12 1/4 x 5R & EB-12 1/4 x 5L；023-442-00(K23-442-00) and 023-443-00(K23-443-00)

    • Labwork 12-1/4" x 5" 12K 15K Electric Trailer Brake Self-Adjusting Assembly

    About Labwork：

    Labwork Is An Auto Parts One-stop Solution Brand Of More Than 10 Years, Which Specializes In Providing Global Customers With Top-notched Quality Automotive Parts & Accessories . If You Need Any Auto Parts, Its Enough To Come To Labwork.

     

    Features：

    Made of the High Quality
    Manufactured to Meet or Exceed Specifications.

    Heavy-Duty Compatibility: Designed for 12,000–15,000 lb trailer axles with 12-1/4" x 5" drum size and 7-hole brake flanges. brake Drum 9-28 and LCI 12K axles；Part Number: EB-12 1/4 x 5R & EB-12 1/4 x 5L；023-442-00(K23-442-00) and 023-443-00(K23-443-00)

    Self-Adjusting Performance: Equipped with an internal self-adjusting mechanism that maintains optimal brake shoe tension automatically—ensuring consistent, reliable braking with reduced maintenance.

    Preassembled for Easy Installation: Each brake assembly comes fully preassembled with shoes, magnets, and springs mounted on a heavy-duty backing plate—ready to install quickly with minimal setup.

    Built for Demanding Applications: Perfect for use on flatbed trailers, heavy equipment haulers, and dual tandem axle trailers. Trusted by commercial and industrial users for rugged, high-capacity performance.

     

    Fitment：

    Replacement for 023-442-00(K23-442-00) and 023-443-00(K23-443-00)

    for 12,000–15,000 lb trailer axles

     

    Package Includes：

    Set 1

    2 left-hand (driver side) and 2 right-hand (passenger side) self-adjusting electric brake assembly. Mounting hardware not included.

     

    Set 2

    1 left-hand (driver side) and 1 right-hand (passenger side) self-adjusting electric brake assembly. Mounting hardware not included.

     



    Payment

    Shipment

    Usually we arrange shipping in 3 business day after payment confirmed.
    Orders will be shipped out via Carrier USPS or FedEx .

    Delivery time :

    When you find track information is abnormal or not get goods , please feel free to email contact us first for troubleshooting, Don"t open dispute case immediately Please.

    Warrenty & RMA

    Warranty for defective items (excluding items damaged and/or misused after receipt).
    In order to return an item you must contact us to request a RMA No.
    Please returned items in the original packaging, fill in RMA number on package, and PROVIDE us reason for the return, and your eBay ID.

    Service & Contact

    We hope you have a pleasant shopping experience with us and satisfy 100%.
    If there are any item or delivery problems, please email contact us first, BEFORE you leave neutral or negative feedback, or 1,2,3 ratings, so that we can address your concerns. Please give us the opportunity to resolve any problem.
    Usually, we response your email in 1 business day.

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    Labwork 12-1/4" x 5" 12K 15K Electric Trailer Brake Self-Adjusting Assembly


    Usually we arrange shipping in 3 business day after payment confirmed.
    Orders will be shipped out via Carrier USPS or FedEx .

    Delivery time :

    When you find track information is abnormal or not get goods , please feel free to email contact us first for troubleshooting, Don"t open dispute case immediately Please.

    Warranty for defective items (excluding items damaged and/or misused after receipt).
    In order to return an item you must contact us to request a RMA No.
    Please returned items in the original packaging, fill in RMA number on package, and PROVIDE us reason for the return, and your eBay ID.

    We hope you have a pleasant shopping experience with us and satisfy 100%.
    If there are any item or delivery problems, please email contact us first, BEFORE you leave neutral or negative feedback, or 1,2,3 ratings, so that we can address your concerns. Please give us the opportunity to resolve any problem.
    Usually, we response your email in 1 business day.

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    On Nov 13, 2026 at 22:23:12 PST, seller added the following information:

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