If you need to replace your idler hub, go with a trusted name and get a genuine Lippert® replacement part. For ultimate peace of mind on the road, replace your idler hub with this Lippert® Idler Hub Assembly, designed for 2,200 lb. trailer idler axles, with a 4 on 4” bolt pattern, and made from durable, solid iron. The hub assembly comes with bearing cones, seal, and grease already installed. A one-year warranty comes standard. Confirm the bolt pattern, axle rating, hub flange size, and other dimensions before purchasing. If you have questions, consult your original equipment manufacturer.