Ensure nothing gets in the vacuum system of your 1968-1982 Corvette with our Headlight and Wiper Door Plastic Vacuum Filter. Our reproduction 1968-1982 Corvette Headlight & Wiper Door Vacuum Filter protects your C3 vacuum system from harmful contaminates. This filter appears and functions just like the GM original and installs in-line at the LH rear of the intake manifold.