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E3 Copper Spark Plug E3.81
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E3 Copper Spark Plug E3.81

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E3 Spark Plugs477417https://www.autozone.com/external-engine/spark-plug/p/e3-copper-spark-plug-e3-81/477417_0_0?searchText=4431
Part # E3.81
SKU # 477417
Total price is: 6 dollars and 99 cents.
In stock | Estimated delivery May 23

PRODUCT SPECIFICATIONS

Part #E3.81
SKU #477417
Weight0.1lbs
Center Electrode DesignStandard
Ground Electrode Tip MaterialNickel
Resistor TypeYes
Center Electrode Tip MaterialNickel
Thread Diameter12mm
Center Electrode Core MaterialCopper
Grade TypePerformance
Seat TypeFlat
Reach1in
Metal TypeCopper

PRODUCT DESCRIPTION

E3.81 fits a wide variety of late model applications, especially import. E3.81 has two legs securing the DiamondFIRE electrode to the shell. This allows for excellent heat transfer and helps to create more turbulence in the cylinder. The patented DiamondFIRE side wire is proven to increase power, reduce fuel consumption and improve hydrocarbon emissions in long-term use. The unique ground electrode and full-size center electrode also provides optimal performance for a guaranteed five years or 100,000 miles.
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    More power
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    Saves on gas
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    More complete burn
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    Better fuel efficiency
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    Cleaner burn for lower emissions
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    Lower emissions

Spark Plugs Metal Types

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E3 Copper Spark Plug E3.81

Customer Rating

4.8
(18)
5.0
(9)
5.0
(6)
5.0
(13)

Price

Total price is: 6 dollars and 99 cents.
Total price is: 6 dollars and 99 cents.
Total price is: 6 dollars and 99 cents.
Total price is: 6 dollars and 99 cents.

Metal Type

Copper

Copper

Copper

Copper

Customer Reviews
20 Reviews
100% of reviewers recommend this product.
9 recommendations

Ratings

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20 Reviews
  • Anonymous
    3 days ago
    Verified Purchase
    Originally posted on e3sparkplugs.com
  • excellent spark plugs

    gerardo
    3 days ago
    Verified Purchase
    Recommended

    [This review was collected as part of a promotion.] very good product!!! i recommend it for any vehicle

    Originally posted on e3sparkplugs.com
  • Give my car a nice boost

    Dillon
    16 days ago
    Verified Purchase
    Recommended

    Great

    Purchased for: 2021 Honda civic lx 2.0 L

    Helpful?

  • Nice plugs

    Andy
    26 days ago
    Verified Purchase
    Recommended

    Works great

    Purchased for: 09Nissan Murano

    Helpful?

  • NO BRAINER, IMHO

    C in Tennessee
    1 month ago
    Verified Purchase

    [This review was collected as part of a promotion.] I've used E3s in all of my vehicles for several years now, and I've never had a failure until well past 100,000 mile mark as advertised! IMHO, they are a no-brainer. You get a full electrode, they do not have to be gapped, and they are a perfect fit every time!

    Originally posted on e3sparkplugs.com
  • Nice spark plugs

    Joe G
    5 months ago
    Verified Purchase
    Recommended

    [This review was collected as part of a promotion.] Smooth riding . Good products. Cheaper price. Great service.

    Originally posted on e3sparkplugs.com
  • Anonymous
    6 months ago
    Verified Purchase
    Originally posted on e3sparkplugs.com
  • NGK

    James
    6 months ago
    Verified Purchase
    Recommended
    Sweepstakes Entry

    Made my car run much quicker and smoother! Will like to buy again in future when 30K is up!

    Purchased for: 2014 Honda Accord EX-L

    Helpful?

  • About the price

    Hesham
    8 months ago
    Recommended

    [This review was collected as part of a promotion.] Hey ,,, please can you explain about the price ... so i dont understand ... this price for 1 pcs or for the 4 pcs kit ......???

    Originally posted on e3sparkplugs.com
  • Matt
    9 months ago
    Verified Purchase
    Originally posted on e3sparkplugs.com
  • Anonymous
    9 months ago
    Verified Purchase
    Originally posted on e3sparkplugs.com
  • 2022 Sienna plug failure

    Anonymous
    9 months ago
    Verified Purchase

    I recently had a very poor result when I installed E3 spark plugs in my 2023 Toyota Sienna van. After 40,000 miles the plug failed miserably. My car stopped running all together and I thought it was something a lot more serious. After taking it to the shop it was discovered the spark plugs and failed and they were replaced by denso plugs that have worked perfectly. I've always had good success with E3 plugs but with this application they were of no value.

    Originally posted on e3sparkplugs.com
  • Anonymous
    9 months ago
    Verified Purchase
    Originally posted on e3sparkplugs.com
  • Anonymous
    10 months ago
    Verified Purchase
    Originally posted on e3sparkplugs.com
  • Anonymous
    10 months ago
    Verified Purchase
    Originally posted on e3sparkplugs.com
  • More power for my Benz!

    Ryan Lakers
    10 months ago
    Verified Purchase
    Recommended

    [This review was collected as part of a promotion.] More power and better gas mileage on my ML 63 Amg! Did feel a noticeable difference from stock plugs

    Originally posted on e3sparkplugs.com
  • Anonymous
    10 months ago
    Verified Purchase
    Originally posted on e3sparkplugs.com
  • Anonymous
    10 months ago
    Verified Purchase
    Originally posted on e3sparkplugs.com
  • E3s

    Bobby
    2 years ago
    Verified Purchase
    Recommended
    Sweepstakes Entry

    Love the plugs and auto zone made it easy to get looked in a lot a places and just couldn’t find any thanks AutoZone for being there !!!!!!!

    Purchased for: 2014 Nissan Altima

    Helpful?

  • a better spark plug

    john
    3 years ago
    Verified Purchase
    Recommended
    Sweepstakes Entry

    these last a long time, 50k miles, and provide a nice perk to performance I have used them on several cars, MB 560SL, Civic Sport, Mazda 3.

    Purchased for: 07 WRX wagon

    Helpful?