The Hyundai Santa Fe Spark Plug Wire serves as a conduit for high-voltage current from the ignition coil or distributor directly to each spark plug, enabling the internal mixture in every cylinder to combust at precisely the right time. Each Spark Plug Wire is wrapped in silicone or EPDM insulation with fiberglass reinforcement, which provides it protection against heat, abrasion, and chemical splash. The boots lock brass terminals firmly onto the plug and coil for the demanding Hyundai engines. Earlier Santa Fe models equipped with distributor systems featured one Spark Plug Wire that went from the coil to the cap and additional leads from the cap to each cylinder. Later Santa Fe versions that ran DIS packs had one coil to two cylinders, resulting in fewer Spark Plug Wire paths than earlier ones. Recent Santa Fe trims that are incorporating a coil-near-plug module position the ignition coil close to the plug and make use of very short Spark Plug Wire links. This helps to minimize voltage loss and radio interference. In all years, Hyundai specifies suppression designs that employ carbon, spiral core, or fixed resistor conductors to curb EMI without starving the plugs. However, with age, heat, and vibration increasing resistance, misfire can occur. Therefore, periodic replacement is a must for every Hyundai driver.
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