Race ahead with new Fiero Spark Plugs. Make the spark to get your engine going with new Spark Plugs. Fiero Spark Plugs are easy to upgrade. Upgraded Spark Plugs make more horsepower. Only the highest quality goes into Fiero Spark Plugs. Get your vehicle started faster with less effort with new Spark Plugs. Spark Plugs need to be changed anyway, so get the best now.