Trailer Parts Pro 12-1/4″ x 3-1/2″ Electric Brake Assembly, 5-Bolt, 10K, Self-Adjusting, Left & Right

The Trailer Parts Pro 12-1/4″ x 3-1/2″ Electric Drum Brake Assembly is built for reliable performance on 10,000 lb. trailer axles (5,000 lbs each). Designed for both left (driver) and right (passenger) side applications, this assembly delivers consistent braking power for a wide range of trailers.

Featuring a forward self-adjusting mechanism, it automatically maintains proper brake clearance as the shoes wear, reducing the need for manual adjustments and helping ensure dependable braking over time. The 5-bolt mounting pattern provides a secure and accurate fit for easy installation.

Constructed from durable, high-quality materials, this brake assembly is ideal for utility, equipment, and commercial trailers that require strong, consistent stopping performance.

Key Features:

• Fits 10,000 lb. trailer axles (5,000 lbs each)
• 12-1/4″ x 3-1/2″ brake size
• Available in left (driver) and right (passenger) sides
• Forward self-adjusting for reduced maintenance
• 5-bolt mounting pattern for secure installation
• Durable construction for long-lasting use
• Ideal for utility, equipment, and commercial trailers