Toyota Corolla Spark Plugs

[f355spider]

Word of warning... acquiring genuine NGK or Denso plugs these days can be a challenge. So many counterfeits on the market. Fleabay is pretty much guaranteed to send counterfeits. Jungle site warehouse or 3rd party sellers as well. Even with jungle site direct there's a non-zero probability to get non-genuine parts. The fakes are also getting more and more difficult to tell apart from the real parts. I've been burnt more than once.

What is the best place to get genuine NGK/Denso plugs at fair prices with low/free shipping besides RockA?

https://www.ebay.com/str/partsconta...uid=G-BhcNQ7SFK&widget_ver=artemis&media=COPY

Parts Container is a legit NGK Bosch and Denso reseller. They have hundreds of brands. They have their own warehouse and also drop ship out of Worldpac a nationwide wholesaler for automative repair shops

 

[f355spider]

In the next few months will be replacing plugs on a 2017 Corolla. When I had a Honda, NGK was the plug of choice. What's the best for Toyota to go another 100k+ miles? NGK? Denso? Are the Toyota plugs from the dealer in the Toyota boxes made by Denso or NGK or someone else?

I think it is best to stick with what is in the car, so check the owners manual. I agree with others that NGK and Denso are both high quality so either will work...but I am a purest and unless there is a known issue with doing otherwise, stick with the oem brand.

Its easy for me, all my cars and motorcycle came with NGK. Although my 2018 BMW might have Bosch in it...both it and NGK are spec'd, but haven't had to change them yet.

 

[Shel_B]

Denso Counterfeit Spark Plug Chart
https://assets.denso-am.eu/production/attachments/Spark-Plug-Counterfeits-Poster-English-upd.pdf

 

[nthach]

I purchased my last set of NGK Iridium for Honda at AAP using an online discount code. Confident the purchase authentic. I picked up at store so unsure about minimum for free ship. My go to has been NGK, that said is OM lists Denso application, that would be a good choice too.

I won’t hesitate to buy plugs at the FLAPs if there’s a promo going on(double/triple points) or a MIR/bonus rewards. I bought a set of Denso plugs at AutoZone, they offered $15 in bonus rewards at the time.

Else, my local parts house stocks NGK at decent prices.

 

[ka9mnx]

You lucked out on that Amazon purchase.

I don't think so. Have you had this problem with Amazon? I've never had a counterfeit problem with amazon. I think this vendetta is blown out of proportion with Amazon. I rebuilt the wife's 4Runner from bumper to bumper with 99% percent of the, name brand, parts coming from Amazon. Amazon is pretty quick to pick up on bad sellers and bad products.

 

[JohnB5656]

Dealer spark plugs were my choice. No thinking or research required.

 

[vwmaniaman]

Well I am just different here. I use plain old copper plugs and change them at 30 k miles. Long life plugs often don't want.to come out. Plus I can keep up with engine condition.

 

[vwmaniaman]

I do buy NGK or Dennso for our Mazda and. My VW's. My Dodges get Champions copper.

 

[HowAboutThis]

Dealer spark plugs were my choice. No thinking or research required.

I just looked at the part number online and the Toyota site seems to sell the Denso Long Life Iridium as the OE. So, I'll probably go Denso Long Life Iridium. They're also $5-10 cheaper per plug

 

[iCurious]

He is right going for Toyota OE. It ain't that expensive.

Here Toyota

 

[slacktide_bitog]

Well I am just different here. I use plain old copper plugs and change them at 30 k miles. Long life plugs often don't want.to come out. Plus I can keep up with engine condition.

They have a metal shell plating that should make them easy to remove no matter how long they've been in there

 

[JeffKeryk]

Well I am just different here. I use plain old copper plugs and change them at 30 k miles. Long life plugs often don't want.to come out. Plus I can keep up with engine condition.

I use just a dab of antiseize around the lower threads and torque to the lower end of the range. Nuthin' to it.
I like the Autolite copper plugs in my classics. Good plugs.

 

[vwmaniaman]

I use just a dab of antiseize around the lower threads and torque to the lower end of the range. Nuthin' to it.
I like the Autolite copper plugs in my classics. Good plugs.

 

[vwmaniaman]

I have used those autolite copper plugs in my old 2.9L Ford rangér. They do the job and seem to last a long time.

 

[HowAboutThis]

They have a metal shell plating that should make them easy to remove no matter how long they've been in there

This is my one fear with 110k on my car. Do the OE 120k plugs stick or is it very very very rare? Cause it's a nice day today so I'm tempted to give it a shot but I also need the car tomorrow LOL.

 

[slacktide_bitog]

This is my one fear with 110k on my car. Do the OE 120k plugs stick or is it very very very rare? Cause it's a nice day today so I'm tempted to give it a shot but I also need the car tomorrow LOL.

The OE plugs should not stick

The important thing is to do the job cold

 

[researcher]

This is my one fear with 110k on my car. Do the OE 120k plugs stick or is it very very very rare? Cause it's a nice day today so I'm tempted to give it a shot but I also need the car tomorrow LOL.

you might need a little extra "oomph" with the wrench removing them (initial loosening), and they make make a crack then eek sound, but that's completely normal. Just go slow and if you run into resistance while unscrewing/removing them just go the other way (clockwise) and then go back the other way, continue removing, that move will help dislodge any carbon that got into the threads. you shouldn't have any problems

 

[HowAboutThis]

Update: Slowly moving toward completing this task in the next few weeks. I'm reading that a 2017 Corolla seems to need a 9/16 or 14mm socket. Does it need to be "thin walled"? I have 5/8" that I think is what I used for my old Civic. But I guess sizes are changing again LOL

When I checked with AI it said I need a 16mm socket. So, anyway, anyone work on cars that knows what size spark plug socket and if it needs to be "thin walled" for a 2017 Corolla. See, these are the things where it should take an hour to do plugs, but then you spend hours trying to find the right socket and socket type, driving everywhere, blah blah and the extra $150 for the dealer to do it is worth it.

Thanks for the help! Please only reply if you ACTUALLY know the answer because you work on new(er) Toyotas (2017 Corolla). I Googled and Toyota forums and such seem to imply 14mm or 9/16 is needed (I found one at Harbor Freight for a couple bucks). But if it needs to have a thin wall to fit then it's back to the drawing board...

Edit: This website below seems to confirm hex size is 14mm or 9/16. So that's my strong hunch. But thin walled or anything special about the socket (if you agree it's 14mm or 9/16)?

https://www.densoproducts.com/denso-3499-sc16hr11-iridium-long-life-spark-plug

 

[Shel_B]

A thin'-walled socket should work in any case.

 

[HowAboutThis]

A thin'-walled socket should work in any case.

Yes, that would be the option that will work no matter what. But here's the only place near me I can find a 9/16th or 14mm spark plug socket. The big box stores don't seem to sell them or have them in stock?!? Are these thin walled? If not, is my only option some potentially garbage socket off Amazon or eBay?

So if I don't need thin walled, I'll go buy these. If I do need thin walled, are the ones below thin walled (I didn't see it explicitly mentioned).

https://www.harborfreight.com/38-in...r0_VHI4iDwDhT99Tc0HcUB-CGVfMtWnIaAsQmEALw_wcB