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Thread: Spark plug change interval confusion

  1. #46
    Registered Member yrwei52's Avatar
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    Arrow Spark plug change interval confusion

    Quote Originally Posted by mazdadude View Post
    Exactly!

    With the price of a set of new plugs costing as much $$$ as a tank of gas, I am not sure why folks are complaining about a change interval of 75k or even 40k miles...
    2.5T uses different spark plugs, PY8V-18-110. There's no equivalent NGK or Denso plug at this time. So it's not only short 40K-mile replacement interval, but also you're paying high price at $32.37 list each.

  2. #47
    ZOOOOOOOOOM ZOOOOOOOOOOOM mazdadude's Avatar

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    Quote Originally Posted by yrwei52 View Post
    2.5T uses different spark plugs, PY8V-18-110. There's no equivalent NGK or Denso plug at this time. So it's not only short 40K-mile replacement interval, but also you're paying high price at $32.37 list each.
    If you are buying your NGK plugs reboxed in mazda box, from a dealer for $32.37 EACH, then yes that would be a mistake. The NGK part number is listed on the OEM plug.

  3. #48
    Registered Member yrwei52's Avatar
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    Arrow Spark plug change interval confusion

    Quote Originally Posted by mazdadude View Post
    Quote Originally Posted by yrwei52 View Post
    2.5T uses different spark plugs, PY8V-18-110. There's no equivalent NGK or Denso plug at this time. So it's not only short 40K-mile replacement interval, but also you're paying high price at $32.37 list each.
    If you are buying your NGK plugs reboxed in mazda box, from a dealer for $32.37 EACH, then yes that would be a mistake. The NGK part number is listed on the OEM plug.
    Re-read my post. I was saying you can't find an NGK or Denso plug for 2.5T as it uses different plug. You haver to get OEM plugs from Mazda for 2.5T which of course are expensive.

    As for 2.5L, although OEM PE5R-18-110 and PE5S-18-110 plugs are made by NGK and Denso respectively, but these OEM plugs are not just re-boxed NGK or Denso plugs like you said, there's Mazda logo imprinted on ceramic insulator of the plug which costs a lot to do.

  4. #49
    ZOOOOOOOOOM ZOOOOOOOOOOOM mazdadude's Avatar

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    Quote Originally Posted by yrwei52 View Post
    Re-read my post. I was saying you can't find an NGK or Denso plug for 2.5T as it uses different plug. You haver to get OEM plugs from Mazda for 2.5T which of course are expensive.

    As for 2.5L, although OEM PE5R-18-110 and PE5S-18-110 plugs are made by NGK and Denso respectively, but these OEM plugs are not just re-boxed NGK or Denso plugs like you said, there's Mazda logo imprinted on ceramic insulator of the plug which costs a lot to do.


    I was able to use the Mazda part # for the 2.5T, and found a set of 4 plugs made by NGK for $32

  5. #50
    Registered Member yrwei52's Avatar
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    Arrow Spark plug change interval confusion

    Quote Originally Posted by mazdadude View Post


    I was able to use the Mazda part # for the 2.5T, and found a set of 4 plugs made by NGK for $32
    If you can believe that …

    Just go to official NGK website and see if you can find an NGK plug for 2019 CX-5 2.5T? Heck NGK doesn't even have one for 2016 CX-9!

  6. #51
    ZOOOOOOOOOM ZOOOOOOOOOOOM mazdadude's Avatar

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    Quote Originally Posted by yrwei52 View Post
    If you can believe that *

    Just go to official NGK website and see if you can find an NGK plug for 2019 CX-5 2.5T? Heck NGK doesn't even have one for 2016 CX-9!
    Although it is not listed in the catalog, it is written on the spark plug itself, both the Mazda part#, and the OEM part number. The Mazda # is on the porcelain and the OEM # on the metal barrel where you place the socket.

  7. #52
    Registered Member yrwei52's Avatar
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    Arrow Spark plug change interval confusion

    Quote Originally Posted by mazdadude View Post
    Although it is not listed in the catalog, it is written on the spark plug itself, both the Mazda part#, and the OEM part number. The Mazda # is on the porcelain and the OEM # on the metal barrel where you place the socket.
    If you can find PY8V-18-110 plugs for $32 a set of 4, please post the link. It'd be very helpful for many gen-2 CX-9 owners who are paying $32 each!

    I just tried and couldn't find one.

  8. #53
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    Quote Originally Posted by yrwei52 View Post
    If you can find PY8V-18-110 plugs for $32 a set of 4, please post the link. It'd be very helpful for many gen-2 CX-9 owners who are paying $32 each!

    I just tried and couldn't find one.
    No, you will never find the Mazda branded plugs that cheap, you will have to get the non-mazda branded ones.

    The end of the Mazda PY8V-18-110 spark plug box says the NGK number is DILKAR7M8


  9. #54
    Registered Member yrwei52's Avatar
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    Arrow Spark plug change interval confusion

    Quote Originally Posted by mazdadude View Post
    No, you will never find the Mazda branded plugs that cheap, you will have to get the non-mazda branded ones.

    The end of the Mazda PY8V-18-110 spark plug box says the NGK number is DILKAR7M8
    Yeah but I can't find NGK DILKAR7M8 plug anywhere in the US. It's also not listed at NGK USA website. Where did you see a set of 4 for $32?

  10. #55
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    Quote Originally Posted by yrwei52 View Post
    Yeah but I can't find NGK DILKAR7M8 plug anywhere in the US. It's also not listed at NGK USA website. Where did you see a set of 4 for $32?
    You are right! My mistake! I just took some time and tried, but I had no luck finding the DILKAR7M8 plugs.

    When I cross ref the Mazda part number PY8V-18-110 earlier, I was sent to an ebay ad that listed the Mazda part number as an official cross. (If you want to see the number or ad, PM me, but I will not put that other number or link here, as I do not think it is the correct cross after seeing the new number on the MAZDA BOX, and I do not want to list any bad info here.)


    I was able to see a few dealers that had the PY8V-18-110 for $22-23 each...
    Last edited by mazdadude; 06-14-2019 at 12:35 AM.

  11. #56
    Registered Member yrwei52's Avatar
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    Arrow Spark plug change interval confusion

    Quote Originally Posted by mazdadude View Post
    You are right! My mistake! I just took some time and tried, but I had no luck finding the DILKAR7M8 plugs.

    When I cross ref the Mazda part number PY8V-18-110 earlier, I was sent to an ebay ad that listed the Mazda part number as an official cross. (If you want to see the number or ad, PM me, but I will not put that other number or link here, as I do not think it is the correct cross after seeing the new number on the MAZDA BOX, and I do not want to list any bad info here.)


    I was able to see a few dealers that had the PY8V-18-110 for $22-23 each...
    Thanks for clarification. Since the OEM plug is the only plug available for those poor gen-2 CX-9 owners, many are screaming that dealers charged them $250~$350 for spark plug service at 40K miles. Many are skipping this service at 40K miles because of the expensive OEM spark plugs.

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