Motorcraft Radiator Cap is designed to provide increased durability and can be removed without damage to the rubber atmospheric seal. It is manufactured from steel that is zinc plated to resist corrosion and rust. This radiator cap has pressure valve springs made of stainless steel to maintain the calibrated pressure for maximum service life. It resists high temperature and deterioration by coolant chemicals. This radiator cap employs an efficient mechanism to prevent accidental cap removal and it facilitates hassle free installation as well as is backed by 12 months warranty.