The Stemco 352-4195 hub cap is designed for use in trailer wheel hubs. It is specifically made for grease-filled wheel end systems and features a 6-bolt pattern. It is equipped with a gasket for sealing and is vented to help manage pressure within the hub​
Stemco Grease Hub Cap
$38.69
Oil Vent Plug, Grease Hub Cap with Duckbill Vent