Premature bearing failure is typically due to grit and grime getting in there...protect your assets! This is the easy and highly convenient way of keeping your axle lubed up and grit and grime free!
BB17810112
Diameter: 1.781"
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BB19800112
Diameter: 1.980"
Protects wheel bearings from the elements during all trailer operations
Automatically maintains the correct internal pressure - cannot damage seals