The Lippert 814208 is a direct-replacement idler hub designed for 3,500 lb. trailer axles with a 5 on 4.5 in. bolt pattern. Everything you need to complete a hub replacement is bundled in one kit -- bearing cones, bearing cups, a double-lip grease seal, and a cotter pin -- so there are no last-minute trips to the parts counter mid-job.
Worn or damaged idler hubs on trailer axles are a leading cause of wheel-bearing failures on the road. The Lippert 814208 replaces the complete hub assembly on a standard 3,500 lb. straight axle, restoring proper bearing preload and sealing. The solid iron construction is built to handle the continuous load cycles that RV and utility trailers put on hubs mile after mile.
Because this is an idler hub -- not a brake drum hub -- it is intended for the non-brake end of an axle, or for axles that run without brakes. If your setup uses electric brakes or surge brakes, verify whether you need a hub-and-drum assembly instead before ordering.
Durable cast iron hub body handles repeated load cycles and resists deformation under axle-rated weight.
Includes inner and outer bearing cones, inner and outer bearing cups, a double-lip grease seal, and a cotter pin -- ready to assemble.
Standard 5-lug pattern on a 4.5 in. bolt circle. Matches the most common RV trailer wheel configuration in the 13-15 in. wheel range.
Backed by Lippert's limited 1-year warranty against defects in materials and workmanship.
An idler hub mounts directly on the spindle of a trailer axle and carries the wheel, bearings, and wheel studs -- but it does not incorporate a brake drum. Idler hubs are used on axles without brakes (common on lighter single-axle trailers and on the secondary axle of some tandem setups where only one axle is braked). If your existing hub has a drum cast into it, you have a hub-drum unit, not an idler hub.
This hub is designed for 3,500 lb. straight trailer axles using a 5 on 4.5 in. bolt circle (also written as 5x4.5 or 5-114.3 mm). It accommodates 13 in., 14 in., and 15 in. wheels with the matching bolt pattern. This is a widely used configuration across RV travel trailers, boat trailers, cargo trailers, and utility trailers built on Lippert and comparable axle platforms.
Stud size is 1/2 in., which is standard for this axle class. Confirm your spindle dimensions (inner and outer journal diameters and bearing seat dimensions) match a standard Lippert 3,500 lb. axle before installation if you are replacing a hub from a non-Lippert axle manufacturer.
Hub replacement on a trailer axle is a straightforward mechanical job for anyone comfortable with wheel-bearing service. Key steps include cleaning the spindle thoroughly, inspecting the spindle for wear or scoring, packing the new bearing cones with grease before pressing them into the cups, seating the grease seal with a seal driver or appropriate socket, and torquing the spindle nut to specification before backing off to the nearest cotter-pin slot.