When you click on links to various merchants on this site and make a purchase, this can result in this site earning a commission. Affiliate programs and affiliations include, but are not limited to, the eBay Partner Network.
12.25" x 5" Self-Adjusting Electric Trailer Brake Assembly – For 12K–15K Axles
Upgrade your trailer's braking system with this heavy-duty electric brake assembly kit, engineered for superior stopping power and long-lasting durability.
🔧 Heavy-Duty Compatibility
Designed to fit 12,000–15,000 lb trailer axles with 12-1/4" x 5" drum size and 7-hole brake flanges. Compatible with Dexter part #K23-442-00, as well as most major axle brands including AL-KO, Lippert, and Rockwell.
⚙️ Self-Adjusting Performance
Features a built-in self-adjusting mechanism that automatically maintains optimal brake shoe tension—delivering consistent, reliable braking with less maintenance.
🛠️ Preassembled for Easy Installation
Each unit arrives fully assembled with brake shoes, high-performance magnets, and heavy-duty springs mounted on a durable backing plate—ready to install out of the box.
🚚 Built for Demanding Applications
Ideal for flatbed trailers, dual tandem axle trailers, and heavy equipment haulers. Trusted by commercial users for high-capacity, rugged performance in tough conditions.
📦 What’s Included