Fitment of 3.75" Trailer Oil Cap Kit
For AL/KO 10000 or 12000 Oil Bath Axles
Please double check part appearance and size before purchase.

Specification Of 3-3/4inch Oil Bath Dust Cap Plugs:
Type: Oil Cup Dust Cover
Color: Black, Clear
Material: Plastic, Rubber
Size : 7.9x9.6cm/ 3.11"x3.75"O.D.
Includes 4 x Oil Cap, 4x Rubber Plug, 4x O-Ring Seal

Function of Trailer Bearings Races Seals Cap
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

Features of of Oil Bath Trailer Hub Threaded 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.
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.
This is NON-OEM product, accessory only.