vs
Spark plug Denso or BERU
Denso 3457 (FXE24HR11)
Why? It's the plug recommended in the owner's manual and I have never seen anyone have issues with this plug.
Why are they noticeably better than other equivalent plugs from reputable brands, I honestly don't know as it seems that the differences should be negligible. Plugs are one of the areas where the car is very fussy.
Pros: no issues, recommended by manual
Cons: negligible difference from others
Vehicle:
Infiniti
Part number: 3457 (FXE24HR11)
I finally changed out the OG Denso spark plugs on my wife's '10 RX350 at a shameful 415,000 kms. Wasn't idling rough but some low-rpms hesitation. Plugs still basically worked fine, though.
Pros: worked fine, very durable
Cons: low-rpms hesitation
Vehicle:
Lexus
Mileage: 415000 km
Toyota sounds like great deal if they actually use OEM plug (DENSO iridium). That part alone is \\~$18 each (you need 6).
Pros: great deal, OEM plug
DENSO , Iridium Long Life, SK20HPR-L11 Spark Plug
Pros: Iridium Long Life
Vehicle:
Subaru
Part number: SK20HPR-L11
I would stick with the specd Denso, leave the coils alone.
Vehicle:
Toyota Prius
I recently was having a misfire in cylinders 2/3, and new plugs and ignition coils cleared it up.
Pros: cleared up misfire
So i just ordered a pack of 4s (the left one is from Denso Japan) from a local distributor carrying Denso spark plugs and of the 4, 3 are made in China and 1 is made in Japan. Comparing them side by side, the China ones definitely look subpar to the naked eye.
Cons: subpar to the naked eye
They look good but if the vehicle has 83k, they were replaced before, Denso is OE on toyota and Autolite are shit plugs so no way they were in since the car was brand new.
Pros: look good
Cons: shit plugs
Vehicle:
Toyota
Mileage: 133575 km
I highly recommend avoiding anything other than exactly what is specified in your owners manual, I currently have bad gas mileage because I was too curious to see if the desno two tip would do as good as the other stuff.
Cons: bad gas mileage
definitely not ok, they are spent, also Denso>NgK any day of the week
Pros: Denso better than NGK
Cons: they are spent
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