Description
The 10K General Duty Trailer Axle Hydraulic Brake Assembly, part #31-B1210H-1, provides dependable stopping power for 10,000 lb trailer axles in demanding work environments. Designed for the left-hand (driver’s side) position, this hydraulic brake assembly uses a 12.25″ x 3.375″ drum and shoe configuration that delivers smooth, controlled braking for equipment trailers, dump trailers, flatbeds, and commercial utility trailers.
This brake assembly bolts directly to a 7-bolt brake flange and installs easily as a replacement for many Dexter 10K hydraulic brake assemblies, as well as other major axle brands built around the same 12.25″ hydraulic platform. The free-backing design allows the trailer to roll backward without shoe drag, which reduces lining wear and improves maneuverability when backing into tight spaces, job sites, or loading docks.
Part #31-B1210H-1 arrives fully assembled with a hydraulic wheel cylinder, bonded brake shoes, return springs, and free-backing hardware already installed. Service technicians and fleet operators value this complete assembly because it reduces installation time and restores braking performance without sourcing individual components.
After installation, properly break in (burnish) the brakes to achieve maximum stopping power. Tow the trailer in a controlled area and apply repeated, moderate brake applications from a steady speed. Avoid hard panic stops during the initial break-in period. This process seats the brake linings evenly against the drum and ensures consistent hydraulic braking under load.
Customers searching for 10K hydraulic trailer brakes, Dexter-compatible brake assemblies, free-backing trailer brakes, and 12.25″ x 3.375″ hydraulic brake assemblies will find part #31-B1210H-1 to be a reliable solution. Built for durability, compatibility, and ease of service.
Additional part #: BK-10KH-01, K23-404-00, 23-404, 10GDHYDLHBRKAS
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