Champion 405 Champion Copper Plus- Boxed - RN14YC

Champion (290) (290) Champion Copper Plus- Boxed - RN14YC Dependable performance. This Champion spark plug features a copper core electrode that provides increased conductivity and heat control for good overall wear. Copper core center electrode allows for accurate control of heat range for longer life. Patented TinTac and ULTRASEAL coated shell for maximum corrosion resistance. Patented SAC-9 semiconductor resistor for maximum EMI & RFI suppression. Built to ISO and SAE standards for proven performance. SPARK PLUGS-CS AUTO BXAmerican Motors Pass. Car: 3.2L L6 (65-61), 3.3L L6 (70-65), 3.8L L6 (77-64), 4.2L L6 (77-71), 4.7L V8 (69-67), 4.8L V8 (69-69), 5.0L V8 (79-70), 5.6L V8 (69-67), 5.9L V8 (78-70), 6.4L V8 (70-68), 6.6L V8 (76-71); Bentley Pass. Car: 6.2L V8 (70-68), 6.7L