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Toyota/Lexus spark plugs #5426817 05/11/20 08:58 PM
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seanf Offline OP
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Who is OE for them? I've read some V6s come with NGK one side and Denso the other. I'm changing plugs and doing maintenance on a friends 2011 Lexus CT200H which from what I gather is a fancy Toyota Prius. It needs new plugs and I want to put OE plugs in it short of buying genuine Toyota from the dealer Its either going to be NGK or Denso. I just usually always buy the OE brand when I change plugs.

Re: Toyota/Lexus spark plugs [Re: seanf] #5426832 05/11/20 09:11 PM
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Timmastertech Offline
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OE plug is a Denso SC20HR11

Re: Toyota/Lexus spark plugs [Re: seanf] #5426861 05/11/20 09:53 PM
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CT8 Offline
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I had a 1992 Toyota truck with a 3 litre engine and the first time I changed the plugs it did have N.D on one bank and NGK on the other.


2015 F150 2.7
2018 F350 6.2
Re: Toyota/Lexus spark plugs [Re: seanf] #5426866 05/11/20 10:01 PM
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clinebarger Offline
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Don't think I've seen the Denso on 1 bank & NGK on the other since Toyota got away from waste spark.


2001 Chevy Camaro L92/4L80E
2006 Chevy 2500HD LBZ/Allison 1000
2010 Toyota Corolla 2ZR-FE/U341E
2000 Toyota Avalon 1MZ-FE/A541E
Re: Toyota/Lexus spark plugs [Re: seanf] #5426867 05/11/20 10:03 PM
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ZebRuaj Offline
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My 4runner was like this. Different plugs on each bank. I replaced with all Denso's

I also use Denso plugs in our Rav and Tundra.


~I fix stuff.
Re: Toyota/Lexus spark plugs [Re: seanf] #5426868 05/11/20 10:04 PM
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ZebRuaj Offline
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My 4runner was like this. Different plugs on each bank. I replaced with all Denso's

I also use Denso plugs in our Rav and Tundra.


~I fix stuff.
Re: Toyota/Lexus spark plugs [Re: seanf] #5426869 05/11/20 10:04 PM
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ZebRuaj Offline
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My 4runner was like this. Different plugs on each bank. I replaced with all Denso's

I also use Denso plugs in our Rav and Tundra.


~I fix stuff.
Re: Toyota/Lexus spark plugs [Re: seanf] #5426887 05/11/20 10:32 PM
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slacktide_bitog Online Content
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Denso and NGK are both good plugs and OE suppliers to Toyota smile

Another good choice is the Denso Iridium TT part #4711

Re: Toyota/Lexus spark plugs [Re: seanf] #5426962 05/12/20 03:23 AM
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Char Baby Offline
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Like so many other companies that Toyota deals with such as Aisin, Toyota owns a portion of the OE spark plug & O2/AF sensor companies.

Last edited by Char Baby; 05/12/20 03:25 AM.

Retired 6 yrs now & lovin' it
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Re: Toyota/Lexus spark plugs [Re: seanf] #5427175 05/12/20 09:38 AM
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You will find that that OEM Denso plug has been discontinued and superseded by a heat range 16 plug (hotter). My 2010 Prius has 575k on it so I have done a few plug changes over the years. Even after 125k these plugs are perfectly serviceable in my operation.

Beware of buying plugs on Amazon, eBay and other third party retailers. Believe it or not there are a lot of counterfeit plugs out there. Especially on these iridiums that retail for 15 bucks a piece. They even have knock-offs that come in convincing looking Toyota boxes.

I have run nothing but the Denso SC20HR11s in mine but seeing as how I do get slight pinging under certain conditions, I don't think I'm interested in going to a hotter plug. I will probably try the NGK laser iridium next time. Oddly enough the recommended NGK plug has a heat range actually colder than the OEM Denso if the cross reference is to be believed.

More important than spark plug changes on these engines is keeping the EGR system cleaned out. That includes the EGR cooler, EGR valve, EGR piping and intake manifold ports. Not a super difficult job but somewhat time consuming. That's also the time to do the PCV valve also since it is behind intake manifold on the block.

Re: Toyota/Lexus spark plugs [Re: seanf] #5427177 05/12/20 09:38 AM
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Wifey's 2006 TSX had 2 Denso and 2 NGK plugs from the factory.


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2013 Lexus GS350 F Sport
2006 Acura TSX
2001 Tundra Access Cab, 1998 Accord LX, 1968 Corvette L36 Roadster, 1965 Olds 4-4-2
Re: Toyota/Lexus spark plugs [Re: seanf] #5427206 05/12/20 10:19 AM
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bilibako2 Offline
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OE plugs per manual,it works before.The labor to remove the V6 the 3 plugs on the back side.


bentoti/1999
Re: Toyota/Lexus spark plugs [Re: seanf] #5427439 05/12/20 02:31 PM
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The original Nippondenso was a spinoff business of Toyota and the current Denso is partially owned by Toyota. But yeah - OE for Toyotas are always equivalent Denso and NGK. Same for any engine by Honda.

There really is nothing fancy about the technology used. They're just solidly designed using good quality materials. Any platinum or iridium electrodes are sized large enough that they don't melt down.

Re: Toyota/Lexus spark plugs [Re: seanf] #5428754 05/14/20 06:30 AM
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Why don’t you want to buy them from a dealer?


'98 LEX LS400 310K
'02 4Runner 250K
'05 Lex LS430 90K
'07 Lex GX470 75K

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Re: Toyota/Lexus spark plugs [Re: Gebo] #5430339 05/16/20 12:20 AM
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painfx Offline
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Because dealers are much expensive

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