Purchase Toyota 4 Runner Ignition wire sets & Toyota 4 Runner Spark plug wires Get Toyota 4 Runner High tension leads. Maintaining the ignition wires of your Toyota 4Runner is pivotal for optimal engine performance. Regular inspection for wear and corrosion can prevent misfires and maintain fuel efficiency, while keeping the engine bay clean extends their lifespan. If you notice rough idling or a decrease in power, it's time to consider a replacement. When selecting new ignition wires, opt for high-quality materials like silicone for better heat resistance and longevity. For installation, ensure a secure fit to avoid voltage leaks. With a variety of options available, choose wires that promise durability and enhanced conductivity to keep your 4Runner running smoothly.