champion copper plus- boxed – rc9yc4 dependable performance. This champion spark plug features a copper core electrode that provides increased conductivity and heat control for good overall wear. built to iso and sae standards for proven performance superior corrosion resistance copper core center electrode allows for accurate control of heat range for longer life copper plus – dependable performance and durability champion copper plus 430 spark plug (carton of 4) application summary: audi pass. Car: 2.8l v6 (99-00), 3.0l v6 (05-02); chevrolet pass. Car: 5.7l v8 (95-94); daewoo pass. Car: 2.0l l4 (99-00); daihatsu lt. Trk.: 1.6l l4 (92-90); daihatsu pass. Car: 1.3l l4 (92-89); dodge pass. Car: 2.4l l4 (94-93); eagle pass. Car: 2.4l l4