NGK Iridium Spark Plugs Heat Range 7 | Multiple Fitments (LFR7AIX)

NGK 2309 LFR7AIX IX Iridium Plug NGK Iridium IX spark plugs are specifically designed for the performance enthusiast. Iridium IX provides outstanding acceleration, high fuel efficiency and durability. The Iridium fine wire center electrode's durability is six times harder than platinum. Iridium alloys extremely high melting point is perfect for today's engines. For even greater performance consider upgrading to a NGK RUTHENIUM HX™ plug. Features Center Electrode Core Material: Copper Core Center Electrode Tip Material: Iridium Ground Conf‌iguration: Standard Ground Electrode Core Material: Nickel Core Ground Electrode Quantity: 1 Ground Electrode Tip Design: Taper Cut Hex Size: 5/8 in Insulator Height: 50.50 mm Manufacturer Heat Range: 7 Pre-Gap Size: .032 in Reach: 26.5 mm Resistance: 5000 Ohms Seat Type: Flat Thread Diameter: 14.00 mm Applications 2006-2014 Subaru WRX 2004-2021 Subaru STI 2005-2009 Subaru Legacy GT 2004-2008 Subaru Forester XT 2006 Mitsubishi Evo 9 What's In