The Lippert 298279 is a direct-replacement electric brake assembly engineered for the right-hand (curbside) position on 8,000 lb capacity trailer axles. Built for travel trailers, 5th wheels, and utility trailers, this assembly delivers reliable electric braking with a large 12.25 x 3.38 in drum and a sturdy 4-bolt mounting pattern. If your existing brake shoes, magnets, or backing plate are worn, cracked, or damaged, the 298279 is the OEM-style replacement to restore full braking performance.
Electric brakes are the standard braking system on towable RVs and trailers rated at 8,000 lbs per axle. When your brake controller sends a signal, an electromagnet inside the drum engages the brake shoes against the drum surface, slowing the trailer in proportion to the controller output. Keeping these assemblies in good condition is critical for safe towing -- worn or seized brake assemblies can cause trailer sway and dangerously extended stopping distances.
The Lippert 298279 ships as a complete right-hand brake assembly, meaning the backing plate, brake shoes, adjuster hardware, and electromagnet magnet are integrated and ready to mount. This is a curbside (right-hand) unit -- if you are replacing both sides, you will need a separate left-hand assembly.
The oversize drum surface provides strong thermal capacity and braking force well-suited to 8,000 lb axle ratings found on heavier travel trailers and 5th wheels.
Designed specifically for the right-hand (curbside) axle position. Shoe arc and adjuster orientation are handed -- do not interchange with the left-side assembly.
Mounts to standard 4-bolt trailer axle flanges. Aligns with OEM mounting holes for straightforward bolt-on replacement without modification.
Built-in adjuster allows the brake shoes to be set to the correct clearance for your drum, ensuring even wear and consistent pedal response from day one.
The 298279 is a complete brake assembly that includes the backing plate, brake shoes, return springs, adjuster mechanism, and electromagnet. This is the full assembly -- not just a shoe kit or magnet replacement.
This assembly is designed for trailer axles with an 8,000 lb rated capacity and hubs/drums sized to accept a 12.25 x 3.38 in brake assembly. Common applications include:
Replacing an electric brake assembly is a straightforward job for the mechanically confident RV owner. Basic steps include:
Electric brake assemblies connect to your trailer's brake wiring harness via two leads from the electromagnet. Polarity is not critical for the magnet circuit -- connect either lead to the brake wire and ground. The brake controller in your tow vehicle governs the amount of braking force applied. Ensure your controller is rated for the number of axles being braked and is properly calibrated for trailer weight.