NGK IX Iridium Spark Plug Box of 4 (UR5IX)

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 1995-1996 AM General Hummer Base 1986 Buick Century Custom 1986 Buick Century Estate Wagon 1986 Buick Century Limited 1992-1993 Buick Commercial Chassis Base 1992-1993 Buick Roadmaster Base 1992-1993 Buick Roadmaster Estate Wagon 1992-1993 Buick Roadmaster Limited 1982-1986 Buick Skyhawk Custom 1982-1986 Buick Skyhawk Limited 1986 Buick Skyhawk Sport 1980-198