Features:1.Applicable Model: This trailer hub bearing dust cap is suitable for hubs with 5 bolts, ideal for boats, engineering applications, trailers, and other hub kits. Please confirm its compatibility with your required product. 2.OE Number: Reference part numbers include 81143, 48355V. Please ensure this matches your needed OE to prevent incorrect purchases and related issues. 3.O Ring Design: The trailer wheel hub dust cap cover features an O ring, ensuring a secure fit on the hub to prevent contamination and debris from entering. 4.Threaded Cap: The threaded cap design allows for simple removal and installation without the need for additional tools. 5.Durable Material: Constructed from sturdy and reliable material, the trailer axle hub dust cap is designed for high strength and wear resistance, providing a long service life. Specification: Item Type: Trailer Hub Bearing Dust Cap Material: Plastic External Thread Diameter: 2-5/16 inch OE Number: 81143, 48355V Fitment: Designed for hubs with 5 bolts, suitable for boats, engineering applications, trailers, and other hub kits Note: Please verify the part number of your item; matching information is provided for reference only.