According to the owner's manual and the repair manual for your Toyota, a full tune-up should be performed on the engine once a year. Though they are not often considered during the process, the Toyota spark plug wires should be replaced at the same time. They are responsible for delivering the proper amount of electricity to the spark plug, which helps the engine to run reliably and efficiently. Because the Toyota spark plug wires can carry as much as 100,000 volts through each wire, they will eventually wear down from the stress. When added to the heat of the engine and chemicals within the engine, such as oil, the reliability of the Toyota spark plug wires is greatly reduced after a year. In addition, the clips that secure them to the spark plugs ands the distributor will begin to loosen, creating a bad connection. When you are ready to do your tune-up, you will find the appropriate set of Toyota spark plug wires for your vehicle in our vast online catalog, for great a great price. The standard set will perform as well as the original units did, when they were new. For most vehicles, we also offer high performance versions of the Toyota spark plug wires. These are designed from the beginning to provide the least amount of resistance to electrical flow, so that they deliver a consistently powerful spark, much stronger than the standard wires can. When you are ready to order a set of Toyota spark plug wires, you can choose to complete the process on our secure web site or over the phone with a toll-free call, and with our quick shipping, your order will arrive soon.