Make tired, sluggish performance a thing of the past with a set of our Mercury Monarch spark plugs revving up your ride. Don't settle for ho-hum combustion the next time you tune up your car when you can get our bargains on the royalty of Monarch spark plugs that pump up the volume on your horsepower, torque and acceleration big-time. We stock the supreme brands like Denzo, Bosch and NGO because they've got the know-how that does the job right to squeeze every ounce of power out of your combustion.
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These rocket launchers deliver lightning strikes of precision sparks to give you the kind of driving that makes you fall in love with the road all over again. Don't cheat yourself out of all the muscle your car can deliver, when you can roll with the supreme quality of these Monarch spark plugs under your hood. When you add on our AutoAnything 1-year lower price guarantee, free shipping and long-life warranties, this is the sweetest deal on the market!