Genuine Maserati Red Color Trident Logo Tire Valve Stem Caps Covers (Set of 4) Brand New Genuine Maserati Color Logo Valve Stem Caps Subtly distinguish your Maserati with these Trident logo valve stem caps with a silver finish. Fit any standard air valve stem and features an "O-Ring Seal" to ensure consistent tire pressure and a clean valve orifice when removed. Knurled head for easy installation (clockwise) and removal (counter clockwise) without the need of a wrench. Sold as set of 4