High Performance. Keeping your Mustang's high performance engine running smoothly and efficiently is important. You should routinely replace your old weak plugs with a new set of NGK Iridium IX Performance Spark Plugs for constant reliable spark power. The Iridium IX plugs from NGK will provide improved throttle response, fuel efficiency, lower emissions and will reduce fouling.
Superior Materials. NGK Iridium IX Performance Spark Plugs feature a copper core electrode for its superior conductivity and an iridium tip (which is 6X harder than platinum) for its extremely high melting point, perfect for keeping your Mustang's high-performance engine running at it's peak. As an added bonus, the Iridium IX plug features Trivalent Metal Plating for its superior anti-corrosion and anti-seizing properties.
Application. This set of eight (8) NGK Iridium IX Performance Spark Plugs are specifically designed as a direct fit replacement for the 1986 5.0 V8 Mustangs.
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