Four pack of black rubber hub cap replacement vent plugs. No need to spend money on an entire new hub cap if just the plug is failing. Replace current hub cap plugs that are leaking, damaged, or brittle from time and wear. New plugs will help prevent dirt and water from contaminating the oil, thereby extending seal, and bearing life. Black plugs provide a cleaner look vs traditional red plugs that show dirt and grease. This 1 1/8" diameter plug will fit common hub caps with 2 3/4" & 3 1/2" windows. Replaces: Stemco️#359-5990 Approximate dimensions = 1 1/8” Approximate net weight pr = 1 oz