Features: Enhances your vehicle's performances with our all aluminum radiator Caps, designed to improve engine cooling efficiency and prevent overheating during high speed or heavy load conditions. Crafted from aluminum alloy, this radiator Caps offers superior heat dissipation compared to cast iron or plastic, ensuring long lasting use and resistance to corrosion. For automotive enthusiasts seeking performances upgrades, high performances vehicle users, and adventurers who demand reliable cooling systems under extreme conditions. Perfect for city driving, long distance travel, where enhances cooling is important to maintaining engine efficiency and safety. With its lightweight design, this aluminum radiator Caps contributes to overall vehicle weight reduction, enhancing both fuel efficiency and driving dynamics. Specifications: Material: Aluminum Alloy Size: About. 55x11.5mm/2.17x0.45in Color: Black/Blue/Silver/Redness/Gold/Purple Package Includes: 1pc Car Radiator Caps note: Please allow 1-2cm errors due to manual measurement. Due to difference between different monitors, the picture may not reflect the item actual color.