SPARK PLUG UR4IX IRIDIUM 83/85 5.0L MUSTANG (NGK)
NGK UR4IX Iridium Spark Plug for 1983-1985 5.0L Mustang.
An essential part of any engine tune-up is a new set of spark plugs. These NGK plugs have been precisely engineered to provide optimal spark in your engine. Copper core with iridium tips. Plugs are 14mm thread, with .460" reach and are heat range 4.
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