Copper Spark Plug
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Autolite Copper Spark Plug

Part No. 3924 Warranty Details  

See if this part fits a specific vehicle.

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Autolite Copper Spark Plugs are guaranteed to deliver quick starts, good fuel economy and smooth acceleration.

Product Features:
  • Copper cored center electrode for higher thermal conductivity
  • Specially engineered high nickel alloy center and ground electrode for extended life
  • High alumina ceramic for high dielectric strength
  • Leak proof, heat fused internal seal for durability
  • Multi-rib insulator prevents flash-over
  • 2 year limited warranty
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Electrode Tip Material:Resistor
Reach:3/4 in
Resistor:Suppressor
Seat Type:Gasket
Thread Diameter:14 mm
Tip Configuration:Power
Wrench Diameter:5/8 in

REVIEW SNAPSHOT®

by PowerReviews
AutoliteCopper Spark Plug
 
3.3

(based on 3 reviews)

Ratings Distribution

  • 5 Stars

     

    (1)

  • 4 Stars

     

    (1)

  • 3 Stars

     

    (0)

  • 2 Stars

     

    (0)

  • 1 Stars

     

    (1)

67%

of respondents would recommend this to a friend.

Reviewed by 3 customers

Displaying reviews 1-3

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(1 of 2 customers found this review helpful)

 
4.0

Autolite 3924 spark plug

By 

from Baltimore,MD

About Me Auto Enthusiast

Verified Buyer

Pros

  • Easy To Install

Cons

    Best Uses

    • Performance Driving

    Comments about Autolite Copper Spark Plug:

    It's quality spark plug, not too much to get excited about.

    Comment on this reviewHelp Icon

    (2 of 2 customers found this review helpful)

     
    5.0

    Use the correct plugs for you car!

    By 

    from Coventry RI

    About Me Auto Enthusiast, Competitive Driver, Mechanic

    Pros

    • Excellent quality
    • Low Cost
    • Reliable

    Cons

      Best Uses

      • Everyday Driving
      • Replacement

      Comments about Autolite Copper Spark Plug:

      When choosing a set of spark plugs for you car, it is imperative to get the correct plugs for your car. The previous reviewer likely bought these plugs because they were cheap.

      I run these plugs in my 430hp Cobra. Don't take the countermens advise when selecting a plug. Make sure you order the right plug for your particular vehicle. Call your dealer or local repair shop to find out what you should be using.

      Comment on this reviewHelp Icon

      (4 of 11 customers found this review helpful)

       
      1.0

      less than impressed

      By 

      from Bradford pa

      Pros

      • Nothing but trouble

      Cons

      • Decreases Gas Mileage
      • Engine misfired

      Best Uses

        Comments about Autolite Copper Spark Plug:

        I would not buy this product again I bought Bosch superplus and the car ran perfectly....

        • Car & Truck:
        • Casual Driver

        Comment on this reviewHelp Icon

        Displaying reviews 1-3

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        Do you have questions about this product?

         

        Ask a question, get answers from real customers and in-house experts. For further assistance, please review your support options on our Contact Us page.

        2 Questions | 2 Answers
        Displaying questions 1-2
        • Q:

          what is the torque specs for installing spark plugs on a 2000 mitsubishi mirage DE?
          Asked on 4/28/2015 by jason from Gainesville, FL

          1 answer

          • CUSTOMER CARE

            A:

            Hi Jason, I'm glad to answer you! This Autolite Copper Core Resistor Spark Plug - Part No. 3924 should be torque to 11-16 ft lbs.

            Answered on 4/28/2015 by Solomon
        • Q:

          what is the gap for a 1999 plymouth breeze
          Asked on 5/16/2010 by Anonymous

          1 answer

          • CUSTOMER CARE

            A:

            The gap on spark plugs need to be set according to manufacturer specs.

            Answered on 5/17/2010 by Kevin from AAP
        Displaying questions 1-2

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        Disclaimer We strive to keep all information accurate and up-to-date; however, product availability, pricing, promotions and store hours are subject to change without notice. Please contact Customer Care if you have any questions or corrections.