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8 pcs NGK Iridium IX Plug Spark Plugs 1987-1989 GMC R3500 5.7L 7.4L V8 CARB Kit Vehicle Fits

GMC R3500 1987 8 pcs NGK Iridium IX Plug Spark Plugs 1987-1989 GMC R3500 5.7L 7.4L V8 CARB Kit

GMC R3500 1988 8 pcs NGK Iridium IX Plug Spark Plugs 1987-1989 GMC R3500 5.7L 7.4L V8 CARB Kit

GMC R3500 1989 8 pcs NGK Iridium IX Plug Spark Plugs 1987-1989 GMC R3500 5.7L 7.4L V8 CARB Kit