Shop Saturn ION Ignition Plug. Find Saturn ION Ignition Plug Wires & Best Saturn ION Combustion Plugs. Discover Saturn ION Spark Plugs. Maintaining optimal performance in your Saturn ION starts with the spark plugs, a crucial component for efficient combustion. To extend their lifespan, ensure regular checks for signs of wear, such as difficulty starting, engine misfires, or poor fuel economy. When choosing replacements, opt for premium materials like iridium or platinum that offer durability and improved ignitability. Always adhere to the recommended gap setting during installation to guarantee a perfect fit. Browse our selection for the ideal spark plug upgrade, designed to keep your ION running smoothly and efficiently.