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Champion Iridium 9407 Spark Plug (Carton of 1) - RER8ZWYCB4

4.5 4.5 out of 5 stars 1,386 ratings

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9407 (RER8ZWYCB4)

Purchase options and add-ons

Brand Champion Spark Plugs
Core Material Iridium
Top Material Type Metal
Vehicle Service Type Car, Truck

About this item

  • Champion Iridium - Maximum Performance. Premium Spark Plug
  • Iridium center electrode delivers maximum life
  • Fine-wire center electrode and V-trimmed for greater ignitability
  • V-trimmed ground electrode promotes sharper spark focus
  • Maintains stable operating temperature under all engine loads
  • Heat-Active alloy allows electrodes to reach optimal temperature quickly
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From the manufacturer

Automotive Spark Plug

As a world leader in spark plug manufacturing, Champion knows what it takes to keep your engine running at its best. When it’s time to replace your plugs, Champion your engine with spark plugs that help improve performance and reduce wear and tear.

Product Description

Champion Iridium - the ultimate element. This spark plugs fine-wire iridium center and platinum ground electrodes provide the sharpest spark focus for maximum performance. Compatible with passenger car, light truck and powersport applications, the exclusive heat-active alloy allows electrodes to reach optimal temperature quickly and maintains stable operating temperature under all load conditions. Step-by-Step Instructions for Installing New Spark PlugsStep 1 If necessary, set the gap on the new spark plug before installing it. In the past, it was necessary to use a gapping tool to make sure the gap in the spark plugs was the correct size. Today, Champion spark plugs come pre gapped, eliminating the need for this step most times. You should double check that the gap is correctly set; check your owners manual to find the distance for the spark plug gap and use a gap gauge or feeler gauge to check the distance. Step 2 Seat the new spark plug by hand; turning it clockwise at least two full turns. Once you have the spark plug snug, use the socket wrench with extension and spark plug socket to tighten it turning the plug clockwise. The plugs washer should be pressed against the mounting surface. Take care not to over tighten the plug; you can strip the thread on the head of the engine leading to costly repairs. You can also use a torque wrench to torque it to specification (OE service or repair manual). Step 3 Replace the spark plug wire boot or ignition coil and wiring connector. A plastic boot should click into place while a rubber boot may require a coat of dielectric grease on the inside of the boot for easy removal next time. Step 4 Repeat the removal and installation process for each spark plug. Thats all there is to it! If at any point you run into issues or have a question, consult your mechanic. These instructions are for informational purposes only and should not be used in lieu of seeking professional advice from a certified technician. We encourage you to consult with a certified technician if you have specific questions or concerns relating to any of the topics covered herein.Shape: Taper Cut

Product information

Technical Details

Additional Information

Warranty & Support

Amazon.com Return Policy:Amazon.com Voluntary 30-Day Return Guarantee: You can return many items you have purchased within 30 days following delivery of the item to you. Our Voluntary 30-Day Return Guarantee does not affect your legal right of withdrawal in any way. You can find out more about the exceptions and conditions here.
Product Warranty: For warranty information about this product, please click here. [PDF 99 KB]

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Champion Iridium 9407 Spark Plug (Carton of 1) - RER8ZWYCB4


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What's in the box

  • CHAMPION IRIDIUM SP
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    Price$9.99-53% $9.99
    List:$21.45
    $35.99$68.79$9.99$80.54
    Delivery
    Get it as soon as Tuesday, Apr 2
    Get it Apr 2 - 4
    Get it as soon as Tuesday, Apr 2
    Get it as soon as Tuesday, Apr 2
    Get it Apr 3 - 5
    Get it as soon as Tuesday, Apr 2
    Customer Ratings
    Mileage
    4.2
    3.7
    4.7
    5.0
    Value for money
    4.2
    3.8
    4.8
    5.0
    Easy to install
    4.1
    3.8
    5.0
    5.0
    Sold By
    VerSure
    Merchandise Group Inc
    PremiumpartsWhosale
    VerSure
    WesNew Auto Parts
    Sixity Auto
    number of items
    1
    1
    1
    1
    core material
    Iridium
    Copper
    Iridium
    Iridium
    Iridium
    top material
    Metal
    Nickel
    Metal

    Looking for specific info?

    Customer reviews

    4.5 out of 5 stars
    4.5 out of 5
    1,386 global ratings

    Customers say

    Customers like the performance, value, ease of installation, fit and smoothness of the spark plug. For example, they mention that it works great, is affordable and that it fits perfectly. Some complain about the damage. Opinions are mixed on quality.

    AI-generated from the text of customer reviews

    39 customers mention39 positive0 negative

    Customers are satisfied with the performance of the spark plug. They mention that it works great, and has no issues. Some say that the car is running fine with these Champions, and that it feels a fair bit more powerful. They also mention that there was a slight increase in horsepower, and improved fuel mileage.

    "...has already run 5K miles with these spark plugs, the engine is working great with no issues. Definitely, a good product for its price." Read more

    "...They all came undamaged and installed easily, without issue...." Read more

    "...Everything fit just fine and started right up. Adjusted the gap on a few of them, but I really don’t’ think it was needed...." Read more

    "...I did .. I have now got a very smooth running engine and feels a fair bit more powerful with these plugs I have also gained about 2mpg more over my..." Read more

    27 customers mention24 positive3 negative

    Customers like the value of the spark plug. They say it's a good buy, affordable, and saves ton of money.

    "...I did not want cheap plugs, but these were to my surprise pretty cheap and high quality to boot. Very satisfied." Read more

    "...Definitely, a good product for its price." Read more

    "...they don't have 24k gold conductor with a pink diamond tip, they are cheap...." Read more

    "...Amazon had an amazing price compared to almost $10/ea at my local parts stores...." Read more

    15 customers mention13 positive2 negative

    Customers like the fit of the spark plug. For example, they mention that it fits perfectly, and there was no issue with installation. Some say that the plugs are a good fit for their Grand Cherokee and their Kia Forte 14.

    "...Everything fit just fine and started right up. Adjusted the gap on a few of them, but I really don’t’ think it was needed...." Read more

    "Changed at 77K on a Dodge Grand Caravan GT. Perfect fit. FYI it’s not a package of 4. You’ll only get one...." Read more

    "It fits what it says it fits. Don't last as long as the brand name ones but these are cheaper" Read more

    "The spark plugs themselves were fine and fit perfectly. The problem was the packaging...." Read more

    8 customers mention8 positive0 negative

    Customers are satisfied with the smoothness of the spark plug. They mention that it makes their engine run smoother, idling smoother and getting better mileage. Some customers also mention that the spark Plug has made a huge difference in the acceleration of their vehicle.

    "...igntion coils (delphi brand from amazon)....all good now....engine runs smooth. Gap to .043" Read more

    "...been around a long time and glad I did .. I have now got a very smooth running engine and feels a fair bit more powerful with these plugs I have..." Read more

    "...They fit perfectly and car ran so smooth afterwards ...I didn't likt like that I bought a set of 6 and no plug grease was included." Read more

    "...Simple adjustment and my civic runs a lot smoother. I noticed greater response, pull, and a little more growl from the motor...." Read more

    7 customers mention7 positive0 negative

    Customers find the installation of the spark plug to be easy. They mention that it came undamaged and installed easily.

    "Got these for a 2010 town and country. They all came undamaged and installed easily, without issue...." Read more

    "Installed in my 2016 Dodge Charger SE works great and was easy to install! Price was well worth it as well! Glad everything works great!" Read more

    "...This new set i received came undamaged and installed without issue." Read more

    "Easy to install and I noticed like there was a slight increase in horsepower. It could be sociological but I love them!" Read more

    62 customers mention38 positive24 negative

    Customers are mixed about the quality of the spark plugs. Some mention that they are high quality to boot, and awesome OEM plugs, while others say that the old plugs were rough, had a bent electrode, and were defective. Some customers also mention that the plugs are not even all the same.

    "...cheap plugs, but these were to my surprise pretty cheap and high quality to boot. Very satisfied." Read more

    "...Short term review: installed plugs without checking the gap. After driving 100 miles, Check engine light came on for a misfire in cylinder 4...." Read more

    "The spark plugs themselves were fine and fit perfectly. The problem was the packaging...." Read more

    "...They work just fine. No warping, cracks, or broken parts on any of the ones I ordered...." Read more

    5 customers mention2 positive3 negative

    Customers are mixed about the ignition of the spark plug. Some mention that it sparks like it should, while others say that it was defective and causing the engine to misfire. They also experience problems such as premature ignition, early burn out, and inefficient fuel.

    "...properly gapped as advertised could experience problems such as premature ignition, early burn out, or inefficient fuel consumption." Read more

    "This thing sparks just like it should and just when is should. I put it in and my truck engine worked...." Read more

    "I like the price and the product. However the vehicle had a #3 misfire. Had to take it back apart to diagnosis...." Read more

    "They spark like they should...." Read more

    11 customers mention0 positive11 negative

    Customers are dissatisfied with the damage of the spark plugs. Some mention that the gap was crushed on all of them, one of the plugs was damaged, and one had damaged threads. They also say that the plug did not come pre-gapped and that the box was damaged.

    "...come with a cardboard ring around the electrode, and were gapped to around 0.039 inches, which is what I saw on other websites...." Read more

    "I got these sold as new and one of the plugs had damaged threads. Not unusable, but not thrilled" Read more

    "...out the spark plugs and 3 of them were gapped to .035, cylinder 4 plug was barely gapped. Changed the gap to .044 recommended and all is well...." Read more

    "...Simple replacement and the work fine. Be aware that they do not come pre-gapped for the Acura so make sure you set the gap prior to installation...." Read more

    Good price. Fast shipping.
    4 Stars
    Good price. Fast shipping.
    I like the price and the product. However the vehicle had a #3 misfire. Had to take it back apart to diagnosis. Checked the plug and the electrode fell off. Glad I caught it before it fell off in the cylinder. Check your plugs before installing.
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    Top reviews from the United States

    Reviewed in the United States on March 30, 2023
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    Reviewed in the United States on March 28, 2022
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    Reviewed in the United States on October 7, 2020
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    Reviewed in the United States on August 27, 2019
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    21 people found this helpful
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    Reviewed in the United States on January 28, 2022
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    Reviewed in the United States on June 20, 2023
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    Reviewed in the United States on April 16, 2021
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    Reviewed in the United States on January 8, 2023
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    Top reviews from other countries

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    Brent
    5.0 out of 5 stars awesome
    Reviewed in Canada on July 11, 2020
    Style: 1Size: 9407 (RER8ZWYCB4)Verified Purchase
    2 people found this helpful
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    Dale
    5.0 out of 5 stars So far so good
    Reviewed in Australia on September 8, 2021
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    Marc Beauchemin
    5.0 out of 5 stars bon
    Reviewed in Canada on September 3, 2021
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    MICHAEL HEARNE
    4.0 out of 5 stars great price
    Reviewed in Australia on August 22, 2020
    Style: 1Size: 9407 (RER8ZWYCB4)Verified Purchase
    Colette
    5.0 out of 5 stars Super bougies
    Reviewed in Canada on December 3, 2020
    Style: 1Size: 9407 (RER8ZWYCB4)Verified Purchase