Looking to get my spark plugs changed shop offered Bosch double iridium’s but I see that Denso is the OEM plug

called Lexus in Raleigh and was quoted $25 a piece after taxes around $200+

called autozone and they carry the Denso 3473 I think which is OEM for like $21 per plug but also had Denso TT for like $11 per plug.

My question is what’s the difference between the $21 plug and the $11 plug? As far as quality goes?

 

Autozone is supposed to have genuine Denso plugs
https://www.densoautoparts.com/where-to-buy/

Are they actually? Beware of fakes they are everywhere. Bosch in a Lexus is bad don't do it. Denso 3473 is the correct plug for your car, well I'm pretty sure without knowing your year.

 

Use a denso or NGK, use the version that has iridium on both sides not just center electrode. I use denso on all of these

 

FK20HBR11 aka Denso 3473 is the only plug Lexus says to use.

 

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LS460 OE spark plug part number 9091901249, $13.76/each at Bell Lexus, free shipping:
https://parts.belllexusnorthscottsda...091901249.html
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Boss, unless you’ve hit or passed 100k, don’t waste your money. THe OEM iridium’s last way past 100k unless there’s some engine issue.

 

I bought it with like 140K a year ago to be exact now that I think about it because my registration is up on in. It’s a 2011 460L now at 179K. Wasn’t sure what the previous owner did or did not do I was able to pull some records from the Lexus app but I figured why not go ahead an knock it out anyways just for peace of mind. Along with rotors and brakes all around and 2 rear calipers. Btw I did decide to go with the OEM denso 3473’s.

Next I was thinking of getting the timing done along with water and oil pump. And also front differential fluid change and after that control arms.