Genuine Honda 98079-571CV Spark Plug (Sk22Pr-M11S) Factory replacement spark plug recommended for use in 2007 to 2011 Honda Civic Si Iridium electrode provides increased durability and a higher melting point than platinum Brand New Original Genuine Factory OEM part. This is NOT a copycat aftermarket "OEM style" item. See your owners manual for inspection and replacement requirements specific to your vehicle.