12K – 15K Electric Trailer Brake Assembly – Right Hand

Description

The 12K–15K Electric Trailer Brake Assembly (Right-Hand, Self-Adjusting), part #31-5131, delivers strong and consistent stopping power. It handles heavy-duty trailer demands with ease. It fits axles rated from 12,000 to 15,000 lbs. As a result, it works well for industrial, commercial, and equipment-hauling trailers that need reliable braking.

This brake uses a 12.25″ x 5″ shoe and drum setup. It bolts directly to a 7-bolt brake flange. The right-hand design fits the passenger side of the trailer. Plus, the self-adjusting system keeps proper shoe clearance as the linings wear. Therefore, the brakes stay balanced and responsive without constant manual adjustments.

The 12K-15K Electric Trailer Brake Assembly replaces many Dexter and other heavy-duty OEM brake assemblies with the same 12.25″ x 5″ RH layout. It also matches the common 7-bolt flange pattern. Even better, it comes pre-assembled with bonded linings, actuating arms, return springs, and self-adjust hardware. This speeds up installs and reduces downtime during service or axle rebuilds.

For best results, burnish the brakes after installation. Tow the trailer in a safe area. Then apply the brakes repeatedly from a moderate speed. Use steady pressure instead of hard stops. Over time, the shoes seat evenly against the drum and improve braking consistency.

This assembly handles heat and heavy load cycles with confidence. Because of that, fleets, rental yards, dealers, and serious haulers trust it. With a rugged self-adjusting design, 12.25″ x 5″ size, 12K–15K capacity, and Dexter-style compatibility, part #31-5131 restores reliable braking and confidence on every haul.

Additional Part #: 1215RHBRKAS, K23443HDV, K23-443