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This electric trailer brake assembly is specified as Brake Assembly Box Kit LH, 12" x 3-3/8" 8,000 lbs. FSA. Includes 4each 1/2" bolt and nut. This is a genuine AxleTek component identified by part number 12-830. It is intended for service, repair, or replacement work where the listed dimensions and application details match the trailer.
Designed for compatible trailer brakes applications. Confirm brake diameter and width, axle rating, mounting-flange pattern, and left- or right-hand orientation. Trailer parts that look similar can use different dimensions or ratings, so use the stamped part number and physical measurements as the final fitment check.
Inspect the related components for wear and compare every listed measurement with the part being replaced. Installation should follow the trailer or component manufacturer's procedures and applicable torque specifications.
Trailer Parts Plus supplies practical replacement trailer brakes for utility, cargo, boat, equipment, and commercial trailers. Need help confirming 12-830? Have your axle rating, measurements, and existing part numbers ready so the correct match can be verified.