Dinan Iridium Spark Plug (Bujias) - 12x26.5x14MM (Flat) - Grado 9 - B48/B58/S58

Features: Heat range 9 spark plug (Similar: Bosch 3, Brisk 10, Champion 4, Denso 27, and NGK 9) 152% higher melting point than silver, 125% higher than copper, and 38% higher than platinum Stronger than copper and platinum Acceptable for high performance / tuned and stock vehicle applications alike Projected insulator design Lower required supplied voltage Cooler operating temperature than stock plugs Optimized electrode design for hard to ignite fuels, such as ethanol Resists preignition better than stock plugs An excellent match for Dinan ignition coils Thread reach: 26.5mm Thread diameter: 12mm Hexagon: 14mm Bi-Hex Terminal Type: Cup Seat Type: Flat Install Torque: 17 Nm Insulator Material: Ceramic Supplied Gap: 0.5mm 1 step colder than OEM (Gen 1 B48, Gen 1/2 B58, & S58) Made in the EU