Q.How do you match the style and heat range of the OE spark plug?
A. We use what is called a "rating engine" to match up plugs. The process begins by buying the OE spark plugs and carefully measuring them. Our engineers then match the physical qualities with several Autolite® plugs. Then we run the OE spark plug in our rating engine. The data from this engine tells us the heat range of the OE spark plug. We use this information to precisely match an Autolite® spark plug to both the heat range and dimensions of the Original Equipment plug.

Q.What are the benefits of using a .6mm Finewire Iridium Enhanced Motorcycle that originally had a copper core plug?
A. - 6mm finewire design with Sport V-trim ground electrode engineered to offer improved ignitability and durability
      over a standard plug
    - Up to 26% quicker starts than leading standard plugs
    - More focused ignition to prevent fouling than leading standard plug
    - More horsepower and better fuel efficiency than standard plug
    - Larger flame kernel for more complete burn, faster starts and better performance & fuel efficiency
    - Optimum Performance
    - Less firing voltage for more coil dwell time

Q. Should I still use a .6mm Finewire Iridium Enhanced spark plug even if I install a new plug every season?
A.Yes, you will gain all of the benefits listed above from using a Premium spark plug compared to that of a standard plug. The Autolite® Xtreme Sport® spark plugs extract optimal performance, better fuel efficiency and quicker starts.

Q. Is the Autolite® Xtreme Sport® Spark Plug resistant to fouling?
A.Yes, the extended tip and lower required voltage to fire Autolite® Xtreme Sport® spark plugs help prevent fouling by providing a more focused ignition.

Q.Can I use an Autolite® Xtreme Sport® Spark Plug in my 2-stroke engine?
A.Yes you can, it will give you up to 26% quicker starts than leading standard plugs and better ignition system performance. The benefits of the finewire design in Autolite® Xtreme Sport® also provide improved fouling performance; fouling is a common problem in 2-stroke engines.