The NGK SILKGR9A7ES Laser Iridium High Ignitability spark plug is a replacement plug for 2017-2025 Audi and Porsche models. It has M12-1.25 threads, a 1.043 in. reach, a 14 mm Bi-Hex hex and a heat range of 9. An iridium alloy center electrode paired with a fine platinum ground electrode tip supports more complete combustion and smoother idle.

NGK SILKGR9A7ES Laser Iridium High Ignitability Spark Plug Features:

• Fits 2017-2025 Audi and Porsche models; see Fitment tab for all applications
• M12-1.25 metric thread with 1.043 in. reach
• 14 mm Bi-Hex hex
• Flat seat with crush washer installed
• Heat range 9
• 0.028 in. factory pre-gap
• Iridium center electrode tip with platinum ground electrode tip
• Resistor type (5000 ohm) for ignition noise suppression
• Stud terminal
• 2.010 in. insulator height
• High ignitability design pairs an iridium alloy center electrode with a fine platinum ground electrode tip
• Fine ground electrode tip supports more complete combustion, smoother idle and quicker throttle response
• Copper core center electrode draws heat away from the firing end
• Trivalent metal plating resists corrosion and thread seizing
• Intended for engines that originally used high ignitability iridium plugs
• Sold individually