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, designed for 3,500 lb. trailer idler axles, with a 5 on 4.5” bolt pattern, and made from durable, solid iron. This hub includes a bearing kit that is bagged separately. A one-year warranty comes standard. Confirm the bolt pattern, axle rating, and other dimensions before purchasing. If you have questions, consult your original equipment manufacturer.