A notable feature of the Stemco 340-4009 is its clear, high-impact Lexan window. This inspection window allows for easy visual checks of the lubricant level, so operators can monitor the oil level without needing to remove the cap. This feature is especially helpful for preventing under-lubrication and over-lubrication, both of which can harm wheel bearings and other components.
Stemco Standard Grease Hub Cap 5.50 ID
$24.13
Standard Universal TN Drive Axle Wheel Hub Cap Without Side Fill Plug