Grillcraft NIS3501-BAO BG Series Polished Aluminum Lower 1pc Billet Grill Grille Insert for Nissan 350Z Grille bolts over the factory grille. GrillCraft BG-Series Billet Grilles are made from 6061 T6 Aluminum. All BG-Series grilles have a high-luster polished front face with a black baked on powder coating finish back ground. Emblems are generally not included with unless stated in the product title. GrillCraft is committed to ensuring that every BG-Series Billet Grille we produce will exceed your expectations, guaranteed. Limited Lifetime Warranty