Find Mercury Comet spark plugs with built-in capacitors from AutoAnything that materialize bolts of lightning in your classic car's engine. By stocking up energy from your car's coil and releasing it in a two-nanosecond pulsation, our Comet spark plugs put out a more efficient burn in your engine.
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You get additional horsepower and torque with these Mercury Comet performance spark plugs. And, each Comet sparkplug boosts your gas mileage by 10%. Every Mercury Comet performance sparkplug gets our AutoAnything 1-year lower price guarantee. Better yet, our shipping is free. So, buying from us gives you a great deal.