Replace your standard grease caps with these bearing protectors to prevent internal corrosion. Spring-loaded pistons ensure that water and debris stay out of hubs, even when they're submerged. Built-in zerks make it easy to grease your bearings.

Features:

• Protective caps replace your existing standard grease caps
• Spring-loaded pistons ensure that water and debris won't enter your hubs, even when submerged
• Keeps pressure inside the hub slightly higher than outside the hub
• Prevents contaminants from being drawn into the hub assembly
• Built-in zerks make adding extra grease fast and easy
• No need to take apart hub
• Automatic pressure-relief prevents overfilling
• Grease seeps around the edges of the piston to indicate that the hub is full
• Chrome plating resists corrosion
• Rubber covers keep dirt and debris away from the grease zerks

Specs:

• Application: trailer hubs with an inner diameter of 1.985"
• Works with hubs with L44643, L44649 or L44640 outer bearing
• Quantity: 2 protectors