Looking for aftermarket parts to modify or upgrade your 1990 Ford Mustang with spark plugs? At Tunersports.com we carry a huge selection of the top name brand performance spark plug parts and accessories.

OUT OF STOCK 3716NGK G-Power Series offers the performance and durability of platinum at a competitive price. Fine wire platinum tipped center electrode reduces required voltage for better starts, superior acceleration and increased fuel economy.... NGK G-Power Spark Plug Box of 4 (TR5-1GP) 1984-1990 Ford Mustang LX $41.29 |

OUT OF STOCK 7243The improved throttle response, superior anti-fouling and high-ignitability makes Iridium IX® the ideal choice for any performance enthusiast. Iridium's high melting point is perfectly suited to today's high-temperature engines, delivering outstanding acceleration, fuel efficiency and durability.... NGK Iridium IX Spark Plug Box of 4 (TR5-1IX) 1984-1990 Ford Mustang LX $55.51 |

OUT OF STOCK 3207NGK Laser Iridium plugs were designed specifically for the performance enthusiast. Fine wire center electrode ensures high durability and a consistently stable spark. Iridium alloy has an extremely high melting point, perfect for today's high-tech, high-performance engines.... NGK Single Platinum Spark Plug Box of 4 (UR45GP) 1987-1993 Ford Mustang LX 1987-1995 Ford Mustang GT $41.29 |
OUT OF STOCK 7559The improved throttle response, superior anti-fouling and high-ignitability makes Iridium IX® the ideal choice for any performance enthusiast. Iridium's high melting point is perfectly suited to today's high-temperature engines, delivering outstanding acceleration, fuel efficiency and durability.... NGK Single Iridium Spark Plug Box of 4 (UR45IX) 1987-1993 Ford Mustang LX 1987-1995 Ford Mustang GT $55.51 |

OUT OF STOCK 6945NGK V-Power plugs feature a unique v-cut in the center electrode that directs the spark to the edge of the electrode, helping the spark develop more rapidly, increasing ignitability and reducing quenching.... NGK V-Power Spark Plug Box of 4 (UR45) 1987-1993 Ford Mustang LX 1987-1995 Ford Mustang GT $36.44 |
OUT OF STOCK 7060NGK V-Power plugs feature a unique v-cut in the center electrode that directs the spark to the edge of the electrode, helping the spark develop more rapidly, increasing ignitability and reducing quenching.... NGK V-Power Spark Plug Box of 4 (TR5-1) 1984-1990 Ford Mustang LX $36.44 |