Headlight Ring Seal For Studebaker 40, 400, 4000 1959, 30, 300000 1958; HR 16For Studebaker cars and trucks, this headlight ring seal is designed to fit perfectly with an outer diameter of 8 5 8" and an inner diameter of 7 7 8". Crafted with an advanced, high performance design, this seal ensures a snug fit around the headlight ring, effectively protecting against moisture, dirt, and debris. Its durable construction makes it easy to install, providing a reliable barrier that enhances the longevity of your vehicle's headlight