Trailer Parts Pro 12-1/4″ x 3-3/8″ Electric Brake Assembly, 4-Bolt, 8K, Self-Adjusting, Left & Right, Dust Shield

Upgrade your trailer’s braking performance with the Trailer Parts Pro 12-1/4″ x 3-3/8″ Forward Self-Adjusting Electric Drum Brake Assembly, designed for 8,000 lb. capacity per pair (4,000 lbs each). Engineered for reliability and ease of use, this assembly is available for both left (driver) and right (passenger) side applications.

The forward self-adjusting feature automatically maintains proper brake clearance as components wear, reducing the need for manual adjustments and ensuring consistent, dependable braking. The 4-bolt mounting pattern provides a secure fit, while the included dust shield helps protect internal parts from dirt and debris, extending the life of the assembly.

Built with durable materials, this brake assembly is ideal for utility, cargo, and equipment trailers that require dependable stopping power.

Key Features:

• 8,000 lb. capacity per pair (4,000 lbs each)
• 12-1/4″ x 3-3/8″ brake size
• Available in left (driver) and right (passenger) sides
• Forward self-adjusting for reduced maintenance
• 4-bolt mounting pattern for secure installation
• Includes dust shield for added protection
• Durable construction for long-lasting performance