champion copper plus- boxed – n11yc 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 302 spark plug (carton of 4) application summary: audi pass. Car: 1.5l l4 (74-73), 1.6l l4 (80-75), 1.7l l4 (83-81), 1.8l l4 (87-70), 1.9l l4 (77-72); bmw pass. Car: 1.6l l4 (71-64), 2.0l l4 (69-69), 2.8l l6 (74-71), 3.0l l6 (77-77), 3.2l l6 (81-78); mercedes-benz pass. Car: 2.8l l6 (81-73), 3.8l v8 (85-