12K - 15K Trailer Axle Electric Brake Assembly - 12000 lb 15000 lb Capacity - 12.25"x5" - Left Hand (Driver Side)

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12K - 15K Trailer Axle Electric Brake Assembly - 12000 lb 15000 lb Capacity - 12.25"x5" - Left Hand (Driver Side)

12K - 15K Trailer Axle Electric Brake Assembly - 12000 lb 15000 lb Capacity - 12.25"x5" - Left Hand (Driver Side)

SKU : 1215LHBRKAS

Online price only

Regular price $101.99

Online price only

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4.6
Rated 4.6 out of 5 stars
152 Reviews
Shipping: Calculated at Checkout
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  • Reviews

12K–16K Electric Trailer Brake Assembly — Left Hand (Driver Side) | 12.25" × 5" | 7-Bolt Flange

Upgrade your trailer braking system with this heavy-duty 12K–16K electric brake assembly. Built for demanding hauling applications, this driver-side unit delivers strong, reliable stopping power for large equipment, cargo, and commercial trailers. Designed for easy replacement, it helps restore safe and consistent braking performance quickly.

Note: Not compatible with Rockwell axles.

Brake Assembly Specifications

  • Brake size: 12.25" × 5"
  • Position: Left hand (driver side)
  • Axle capacity: 12,000–16,000 lbs
  • Mounting flange: 7-bolt pattern
  • Compatibility: Fits most Dexter, TK, Lippert, Texas Pride, and similar axles
  • Warranty: 1-year manufacturer warranty

What’s Included

  • (1) 12K–16K electric brake assembly — driver side

Key Benefits

  • Heavy-duty braking performance for large trailer loads
  • Complete assembly makes replacement fast and simple
  • Rear adjustment ports allow easy brake fine-tuning
  • Strong, reliable stopping power under heavy use
  • Designed for compatibility across multiple major axle brands

Installation Notes

Installation requires seven mounting bolts and two wire connections. Mounting hardware is sold separately.

This brake is not compatible with Rockwell axles.

Brake Burnishing Procedure

  • New brakes must be burnished before regular use.
  • Perform 20–30 controlled stops from approximately 40 mph down to 20 mph.
  • Allow brakes to cool between each stop to ensure proper bedding and performance.

Ideal For

  • Equipment trailers
  • Heavy-duty utility trailers
  • Flatbeds and cargo trailers
  • Commercial and fleet trailers

Why Buy from The Trailer Parts Outlet?

  • Fast shipping
  • Bulk and wholesale options available
  • High-quality heavy-duty brake components
  • Expert support to help you choose the right parts

Order your 12K–16K electric trailer brake assembly today and restore dependable stopping power to your trailer.

4.6
Rated 4.6 out of 5 stars
Based on 152 reviews
Total 5 star reviews: 121 Total 4 star reviews: 15 Total 3 star reviews: 5 Total 2 star reviews: 1 Total 1 star reviews: 10
Customers Talked About
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152 reviews
  • JW
    John W.
    Verified Buyer
    4 minutes ago
    Rated 5 out of 5 stars
    HYD BRAKES

    Form, fit, and function just like they should.

  • GN
    George N.
    Verified Buyer
    1 week ago
    Rated 5 out of 5 stars
    Replacement Brake Assembly

    Received on time and worked as described.

  • MB
    Mark B.
    Verified Buyer
    2 weeks ago
    Rated 5 out of 5 stars
    Trailer brake assembly

    Brakes were what was expected. Fairly quick shipping. Although the packaging is a bit weak. Could use a bit more material to secure brake assembly in the box. Otherwise very good experience.

    The Trailer Parts Outlet
    2 weeks ago

    Thank you for your business and your feedback, we will definitely take that into consideration on our packaging!

  • DP
    Dale P.
    Verified Buyer
    3 weeks ago
    Rated 5 out of 5 stars
    brake assembly

    I was impressed with the product and the ease of replacing the 20 year old brakes on my trailer, the low cost and product quality

    The Trailer Parts Outlet
    3 weeks ago

    Great to hear you were impressed with the 3.5k Trailer Axle Electric Brake Assembly and that it made replacing your 20 year old brakes so easy, Dale! We're thrilled the product quality and low cost exceeded your expectations. It sounds like it was the perfect solution for updating your trailer. We really appreciate your business and thank you for your 5 star review!

    Loretta Peacock
    (936) 935-2186
    The Trailer Parts Outlet

  • CG
    Christopher G.
    Verified Buyer
    1 month ago
    Rated 5 out of 5 stars
    Fit perfectly.

    I have a 1999 Century boat trailer. It has drum brakes on the front axle. These fit perfectly and no problems. Haven’t had any issues with leaks or bleeding the brakes. Have not road tested yet.

    The Trailer Parts Outlet
    3 weeks ago

    Great to hear the 3.5K Trailer Axle Hydraulic Drum Brake Assembly fit perfectly on your 1999 Century boat trailer, Christopher! We're thrilled you haven't had any issues with leaks or bleeding the brakes. It sounds like everything is working out great for your front axle setup. We appreciate your business and thank you for your 5 star review!

    Loretta Peacock
    (936) 935-2186
    The Trailer Parts Outlet