Description:

[Function of 3-3/4inch Oil Bath Dust Cap Plugs] Made of three parts while each parts play their own function. O-Ring Seal to prevent oil/water leakage, Clear Plastic Cap Body for known oil level easily, Rubber Plug prevent pollutants entering and easy add oil without removew whole body.. [Featues of Trailer Bearings Races Seals Cap] Adopt with durable plastic and rubber material, strictly meet the old part size requirement for good performance, wear resistance and rust resistance, provide a longer service life.. [Installation of Oil Bath Trailer Hub Threaded Cap] Thread up the oil cap body, and plug this rubber plug into cap body to prevent pollutants entering from oil bath cap, while no need to unload whole oil cap to add oil into..