PN#343-4370  SKU#11992  Inflation 6-Hole Oil Hub Cap. STEMCO tire inflation hub caps are available in both oil and grease for several popular applications. The oil hub caps have a side fill plug and a standard window with oil fill lines. The grease hub caps do not have a side fill plug and incorporate a gray opaque window with no markings.

Hub Cap type: Bolt on. Mounting Hole Count: 7. Application: Trailer axle. Notes: Axle Hub Cap – Hubcap, PSI, Oil, Short Tube. Bolt Circle Diameter (bolt on): 5.00 in. Primary Material: Aluminum. Mounting Bolt Size (bolt on): 0.31 in. Bolt Circle: 5-1/2. Bolt Size: 5/16. Number of Bolts: 6.