Spark plugs - Page 2 - Scion iM Forum
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post #11 of 16 Old 06-15-2020, 02:32 AM Thread Starter
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Originally Posted by SuperchargedMR2 View Post
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Originally Posted by B91SUPRA View Post
That's good you found ones for cheap... Also, just be aware that there is a lot of fake denso's out there. I heard horror stories of guys bought denso plugs not knowing they are fake.

I found a link that could help guide on avoiding fake plugs:

https://www.driven2automotive.com/bl...rk-plugs-2017/

I believe SC20HR11's have been disontinued (not sure if only in the US).....
That doesn't help me very much. The ones I bought are the Toyota replacements in Toyota boxes. I wish there was a telltale sign of how to spot a real one vs a fake Toyota Denso plug.
There is a lot of forums about the fake denso & toyota plugs online. Toyotanation.com has most of them.


See attached pics... this are only some of the differences. Look at the quality of the insulator tips...

I will gather up the links about the fake toyota plugs.
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Last edited by B91SUPRA; 06-15-2020 at 02:35 AM.
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post #12 of 16 Old 06-15-2020, 06:27 AM
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Originally Posted by B91SUPRA View Post
There is a lot of forums about the fake denso & toyota plugs online. Toyotanation.com has most of them.


See attached pics... this are only some of the differences. Look at the quality of the insulator tips...

I will gather up the links about the fake toyota plugs.
https://www.driven2automotive.com/bl...rk-plugs-2017/

http://www.ngk-sparkplugs.jp/english...ake/index.html

Last edited by davect01; 06-15-2020 at 06:43 AM.
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post #13 of 16 Old 06-15-2020, 10:36 AM Thread Starter
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Quote:
Originally Posted by B91SUPRA View Post
There is a lot of forums about the fake denso & toyota plugs online. Toyotanation.com has most of them.


See attached pics... this are only some of the differences. Look at the quality of the insulator tips...

I will gather up the links about the fake toyota plugs.
https://www.driven2automotive.com/bl...rk-plugs-2017/

http://www.ngk-sparkplugs.jp/english...ake/index.html
Thanks for the response. I posted the same link for the Denso's on the previous 2 post. Thank you for psoting the NGKs.

There are fake ones too that comes in Toyota boxes. Mostly from ebay or Amazon.

Checkout Toyotanation.com. There are some members there that came across fake denso/toyota plugs that came with Toyota boxes.
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post #14 of 16 Old 06-15-2020, 06:28 PM
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Originally Posted by B91SUPRA View Post
There is a lot of forums about the fake denso & toyota plugs online. Toyotanation.com has most of them.


See attached pics... this are only some of the differences. Look at the quality of the insulator tips...

I will gather up the links about the fake toyota plugs.
I can't get the thumbnails to open. I've tried to look at the differences but it's really hard to tell what mine look like. Now I have no clue if mine are real or fake. I tried looking at the color of the metal electrode because in the pictures it's easy to see the difference because you know which one is fake and real. But trying to match the color when it's in my hand to the pictures is near impossible. What are the results of the fake plugs when using them? I just went on a 5300 mile trip in my 2009 Corolla S Turbo 5MT and I had changed the plugs before I left. It ran great during the trip so I'm guessing that I got genuine plugs but maybe they were fake and will crap out after 10k miles.

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post #15 of 16 Old 06-15-2020, 10:05 PM Thread Starter
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Originally Posted by SuperchargedMR2 View Post
Quote:
Originally Posted by B91SUPRA View Post
There is a lot of forums about the fake denso & toyota plugs online. Toyotanation.com has most of them.


See attached pics... this are only some of the differences. Look at the quality of the insulator tips...

I will gather up the links about the fake toyota plugs.
I can't get the thumbnails to open. I've tried to look at the differences but it's really hard to tell what mine look like. Now I have no clue if mine are real or fake. I tried looking at the color of the metal electrode because in the pictures it's easy to see the difference because you know which one is fake and real. But trying to match the color when it's in my hand to the pictures is near impossible. What are the results of the fake plugs when using them? I just went on a 5300 mile trip in my 2009 Corolla S Turbo 5MT and I had changed the plugs before I left. It ran great during the trip so I'm guessing that I got genuine plugs but maybe they were fake and will crap out after 10k miles.
Below is the link on some of the discussion:

https://www.toyotanation.com/threads...plugs.1582290/

I reattached some of the pics that came from toyotanation discussion. Compare the insulator of one of the plugs. One of them looks poor quality (one on top of toyota box).

Also, if the seller you bought the plugs from do not have negative reviews about the plugs, maybe yours is fine.
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Last edited by B91SUPRA; 06-15-2020 at 10:26 PM.
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post #16 of 16 Old 06-22-2020, 03:41 PM
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I just did mine at just under 70k. The outgoing plugs don't show any issues so that's good.


Got the updated plugs and they checked out.
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