For protecting your trailer ball when not in use, the CURT rubber trailer ball cover is a perfect fit. This cover is designed to fit a 2-5/16″ diameter trailer ball (trailer ball and ball mount not included).
Before You Order
Verify part number 21811 exactly Match the listed product details to the part you are replacing before ordering. Compare dimensions, specifications and fitment information with your RV or component.
Frequently Asked Questions
What part number should I verify before ordering?
Verify 21811 on your existing part, documentation or equipment label before ordering.
How should I confirm this part fits?
Compare the listed part number, dimensions, specifications and fitment details with your existing component. Do not rely on appearance alone.
