NGK IX Iridium Spark Plug Box of 4 (TR55IX)

NGK Iridium IX spark plugs are specifically designed for the performance enthusiast. Iridium IX provides outstanding acceleration, high fuel efficiency and durability. NGK Iridium IX plugs offer extreme ignitability and exceptional anti-fouling. Tapered cut ground electrode provides improved starting, idling and throttle response. The Iridium fine wire center electrode's durability is six times harder than platinum. Iridium alloy's extremely high melting point is perfect for today's engines. For even greater performance consider upgrading to an NGK Ruthenium HX plug.This Part Fits: Year Make Model Submodel 2003 Aston Martin DB7 GT 2003 Aston Martin DB7 GTA 2002-2003 Aston Martin DB7 Vantage 2002-2003 Aston Martin DB7 Vantage Volante 1989-2005 Buick Century Custom 1989 Buick Century Estate Wagon 1989-1993,1996-2002,2004-2005 Buick Century Limited 1991-1996 Buick Century Special 2005 Buick Century Special Edition 1994-1996 Buick Commercial Chassis Base 1988-1990 Bu