The fuel door on our C3 had an emblem that was far from perfect, so we designed this emblem to take the place of the factory emblem. Printed with a heat resistant material, and offered with multiple pattern imprint options(carbon fiber imprint shown) 
Installation uses the factory 7/16 nuts, but does require effort to thread on, as you will be cutting threads from the nut into the posts on the emblem. DO NOT USE AN IMPACT OR OVER-TIGHTEN!!!