In hot temperatures, both performance and factory fuel injectors can be at risk of vapor lock or heat soak causing a rough idle, slow starting or other potentially serious engine problems. DEI has the solution with Fuel Injector Reflective Heat Covers available in packs of two, four, six, or eight. They reflect direct and radiant heat away from the injectors. Constructed of high-temperature rated glass fiber material bonded to a heat reflective aluminized material, DEI's Fuel Injector Heat Covers can be used on most any engine configuration utilizing stock or aftermarket fuel injectors. Cooler fuel injectors will perform more efficiently, offering a more consistent throttle response. Installation is a breeze as the injectors do not have to be removed. The covers are made with a split design allowing them to wrap around each individual injector and are secured with a sewn-in hook and loop fastening edge.