Lippert 2023134661 Dust Cap For 2K To 3.5K Hub 2,000Lb. Axle Hubs 1.988 Od - 2023134661 - 804-2023134661F1
Dust caps shield bearings, grease, and other inner hub components from dust and contaminants. Bearings and bearing grease should be visually inspected every 12,000 miles or every 12 months, whichever comes first.