One hub cap window and gasket replacement kit. Cracked, fouled, leaking hub cap window? No need to replace your entire hub cap. Kit includes vent plug, oil window, window ring gasket, window gasket and hub cap gasket. Window ring, window screws, and hub cap mounting bolts not included. Replaces: Stemco️#359-5999 Fits: Stemco️#343-4024 hub caps Approximate dimensions = window OD 2 3/4" Approximate net weight = 2 oz