Pulstar® - PlasmaCore™ Inconel Electrode Pulse Nickel Spark Plugs

1 review|Item # 803903849
$14.95 - $119.60
Varies - Depends on Product Options
1971 Mercury Marquis
Fits Following Model(s):
  • 5.8L
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    Product Details

    Mercury Marquis 5.8L 1971, PlasmaCore™ Inconel Electrode Pulse Nickel Spark Plugs by Pulstar®. with Resistor. Inconel-electrode Pulse Plugs. Designed specifically for most popular vehicles, PlasmaCore™ Inconel Electrode Pulse Plug provides great fuel efficiency as well as better performance. Moreover this part will give you better throttle response and higher average horsepower and torque thanks to efficient and consistent fuel combustion.


    Electrode Tip Material: Nickel
    Ground Electrode Tip Material: Nickel
    Ground Electrode Core Material: Copper
    Ground Electrode Tip Design: Tapered
    Ground Electrode Quantity: 1
    Insulator Material: Alumina Oxide
    Material: Inconel Electrode
    Resistor: Yes
    Nominal Gap: 0.040"
    Spark Plug Gap: Customizable
    Spark Plug Thread Size: 0.551"
    Spark Plug Reach: 0.457"
    Wrench Diameter: 0.625"
    Thread Diameter: 0.551"
    Heat Range: 1
    Seat Type: Tapered Seat


    • Increased horsepower
    • Better torque
    • Quicker throttle response
    • Up to 12% better fuel economy
    • Smoother running
    • Reduced emissions
    • Long lasting
    • 100k times more powerful than spark plugs
    • An austenite nickel-chromium-based superalloy center electrode

    PlasmaCore™ Inconel Electrode Pulse Plugs have a patented capacitor that delivers a controlled and powerful spark during the ignition process. In contrast to conventional spark plugs that are wasting and dissipating energy, due to the latest spark plug technology development Pulstar® Plugs store energy and use it in a quick and powerful pulse for spark creation. This great burst produces more than 5,000,000 watts of peak power which forms an energy-dense plasma field that sensitizes the fuel mixture to ensure instantaneous ignition. A faster burn consumes the same amount of fuel more quickly, creating efficient and consistent fuel combustion once the spark is formed to produce a better throttle response and bigger torque and horsepower. Specifically engineered electrode makes the plug life longer and provides improved fuel ignition, quicker throttle response, better torque and horsepower.

    Safety Notes: Do not remove the spark plugs from a hot aluminum cylinder head. Damage to the head will result if it is not allowed to cool before spark plug removal.

    Enerpulse, the developer and producer of Pulstar® pulse plugs, has its origins in Albuquerque, NM starting soon after the 1973 oil embargo. Working with Sandia National Laboratories, focus was directed at the spark plug currently in use by the auto industry. After 15 years of extensive development and testing, Pulstar® pulse plugs contain an internal, very efficient and patented capacitor element that stores energy to discharge into the fuel mixture once the spark gap is ionized. The result is an ignition device that delivers improved mileage and power in internal combustion engines. Pulstar® pulse plugs are manufactured in Albuquerque, New Mexico, USA.

    Part Number:


    Do Pulstar Plugs Come with a Warranty or Guarantee?

    Enerpulse offers a 4-point Original Owner Lifetime Warranty on Automotive Pulstar Pulse Plugs:

    You can return the Pulstar pulse plugs for any reason within 30 days, no questions asked.

    Pulstar pulse plugs will not harm your engine.

    Pulstar pulse plugs will not void your warranty.

    Pulstar offers a lifetime warranty against defects in material or workmanship to the original purchaser.

    Pulstar's Original Owner Lifetime Warranty does not cover damage, defect or malfunction caused by misuse, abuse, improper installation, modification or installation on incorrect vehicle applications. Incidental or consequential damages are not recoverable under this warranty.

    Pulstar Powersport Spark Plugs are warranted to the original purchaser for 2 years from the date of purchase.

    Magnuson-Moss Warranty Act:
    Legally, a vehicle manufacturer cannot void the warranty on a vehicle due to an aftermarket part unless they can prove that the aftermarket part caused or contributed to the failure in the vehicle (per the Magnuson Moss Warranty Act (15 U.S.C. 2302(C)) Learn More



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    Pulstar® - PlasmaCore™ Inconel Electrode Pulse Nickel Spark Plugs With Resistor
    Pulstar® - PlasmaCore™ Inconel Electrode Pulse Nickel Spark Plugs
    Average Rating: 3.8 of 5
    3.8 of 5
    It is alright for the price, I have an 8 cylinder engine so it was little pricey. But I really haven't seen or felt a difference from the conventional spark plugs. So unless I didn't install them correctly, or I don't know. My gas mileage is the same, power is the same. I guess you'd be the judge.
    Posted by (Dallas, TX) / 1995 Ford F-250
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