Show you care for your Ford with new Focus ZX3 Spark Plugs. Make the spark to get your engine going with new Spark Plugs. Be wild or mild with Focus ZX3 Spark Plugs. Upgraded Spark Plugs make more horsepower. Make your compact fun with ZX3. Get your vehicle started faster with less effort with new Spark Plugs. Spark Plugs need to be changed anyway, so get the best now.