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Spark Plug replacement DIY? 2008 ISF

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Old 03-11-17, 11:13 AM
  #46  
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It's not the numbers that matter, and for $50, it's pretty likely they're counterfeit.
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Old 03-11-17, 11:35 AM
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Nope - Do you see the word Denso anywhere is the add or description? They are KanSmart brand. Whatever that means KanSmart has other products for sale at Amazon. Also it says Iridium in the title and Platinum in the description. Stay Away

Lou
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Old 03-11-17, 11:45 AM
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Advance Auto has Denso Iridium TT Spark Plug: IKBH20TT (they are the right Iridium TT plugs for our cars according to Denso) on sale for $6.49 each. I can't imagine beating that deal for a genuine Denso plug.
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Old 03-11-17, 11:59 AM
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Would you guys recommend changing them at 120k? Or slightly earlier? Just a daily driven car, no track days.
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Old 03-11-17, 12:09 PM
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Originally Posted by lobuxracer View Post
Advance Auto has Denso Iridium TT Spark Plug: IKBH20TT (they are the right Iridium TT plugs for our cars according to Denso) on sale for $6.49 each. I can't imagine beating that deal for a genuine Denso plug.
I've thought about going to the TT (Twin Tip) Plug in the past:

https://www.clublexus.com/forums/per...ark-plugs.html

But, with my Problematic eBay plugs, I'm not sure what I will do when it's time to change.

Went to Denso's web site, and they list the stock plug as Long Life.

Lou
Attached Thumbnails Spark Plug replacement DIY?  2008 ISF-tinygrab-screen-shot-3-11-17-1.02.21-pm.png  
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Old 03-11-17, 12:16 PM
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It's definitely a little confusing. On the TT specific site, they say they last 100k miles, but Lexus says our OEM plugs last 60k. What should one believe?
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Old 03-11-17, 12:34 PM
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^^^^Well, Advance Auto just made up my mind for me. I put 8 of the plugs in my shopping cart, and let them sit while I posted here. Then, I got an eMail from Advance offering me a special 20% discount good for the next 72 hours. Final cost now $41.54 for all 8 plugs. So, I bought 'em My eBay plugs, even though they look genuine, will probably remain in my tool chest.

When I pick them up, I'll post pics of the differences.

Lou

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Old 03-11-17, 01:49 PM
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I added those to my cart as well, but I have not received an email for a promo code yet. I'm staring at the OEM plugs I just got from rockauto for $81, wondering if it will be worth the hassle to send those back and drive over to AA.
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Old 03-12-17, 01:00 PM
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Originally Posted by lobuxracer View Post
Advance Auto has Denso Iridium TT Spark Plug: IKBH20TT (they are the right Iridium TT plugs for our cars according to Denso) on sale for $6.49 each. I can't imagine beating that deal for a genuine Denso plug.
awesome , just ordered them
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Old 03-12-17, 01:35 PM
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Just ordered 8 from Amazon for $49.68 shipped via a third party reseller - true blue parts. they look like a legitimate reseller with nearly 9k reviews on Amazon.
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Old 03-12-17, 09:54 PM
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Thought some of you might be interested in reading the specs of the two Denso plugs that I downloaded. Seems like the only differences are a smaller gap and a finer electrode on the TT plug. Looks good to me.

Lou
Attached Thumbnails Spark Plug replacement DIY?  2008 ISF-tinygrab-screen-shot-3-12-17-9.33.20-pm.png   Spark Plug replacement DIY?  2008 ISF-tinygrab-screen-shot-3-12-17-9.35.00-pm.png   Spark Plug replacement DIY?  2008 ISF-tinygrab-screen-shot-3-12-17-9.35.41-pm.png   Spark Plug replacement DIY?  2008 ISF-tinygrab-screen-shot-3-12-17-9.36.30-pm.png  
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Old 03-19-17, 08:39 PM
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Changed my plugs with the newer TT plugs from denso on saturday. So far, seems fine. I had about 57k on the stock plugs. The tips were grey and consistent. New plugs seem to perform the same as the stock ones but I have yet to put the car through its paces.

Hate having to undo the battery though and google how to get rid of the seatbelt chime (garage is around back and I wash the car in the front).
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Old 03-20-17, 01:54 PM
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Originally Posted by STLblueF View Post
...Hate having to undo the battery though and google how to get rid of the seatbelt chime (garage is around back and I wash the car in the front).
There is a way to do this so you don't lose anything. You still disconnect the battery, but apply power through the main fuse box so nothing gets lost. Works a charm for me.
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Old 03-20-17, 02:16 PM
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Originally Posted by lobuxracer View Post
There is a way to do this so you don't lose anything. You still disconnect the battery, but apply power through the main fuse box so nothing gets lost. Works a charm for me.
hmmm. I was thinking about doing something of the sort. Care to explain? Does it involve alligator clips?
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Old 03-20-17, 06:47 PM
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Spade connections. Alligator clips are going to get hit by people working on the car and snap off. There's a silver colored male spade connection pointing straight up a little toward the firewall almost in the middle of the main fuse box. I connect a battery charger to this and another connection to ground (anywhere will do, if you have a ring terminal, all the better, just remove a bolt, put the ring terminal on the bolt and reattach). I kept power on my car for two weeks while intermittently working on the valve lash inspection. It held everything just fine.
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