vs
Spark plug OEM BMW or Denso
Yes definitely get the original OEM Denso plugs and be really cautious of anything you purchase off Amazon a lot of them are counterfeits. You can either go direct to the Toyota dealer or you can go to your local parts store like Napa and just make sure you order the correct Denso Plug.
The plugs look really good pretty even color across all of them no major carbon buildup. Wear on the plug seems typical for 100,000 miles.
Pros: even color, no buildup
Cons: wear after 100k miles
Mileage: 160934 km
I've been running Denso IKH24 for 10k miles, have to swap them often but they've been great so far. Frequent changing will prevent damage to them seeing as they are normal projected grounds, but they are pretty cheap to replace once a year or so.
Pros: great so far, cheap
Cons: swap them often
I run [Denso 5749](https://www.densoproducts.com/denso-5749-ikh01-24-iridium-racing-plug) non projected tip plugs with my FBO IS38 car.
They're 1 step colder, and non projected so the risk of a strap breaking off [\(like this\)](https://i.imgur.com/gdJFaJ4.jpeg) are extremely rare.
Pros: strap breaking extremely rare
Denso or Bosh are the best you can return and get new ones
Pros: best quality
Use NGK and if you can’t find them then go Denso. The only 2 plug brands I would put in a Honda.
Pros: reliable plug brands
Vehicle:
Honda
My 2010 RX350 with the same V6 has 170k on it and still gets me 24 MPG - Denso factory plugs are life, prove me wrong.
Pros: excellent longevity, good fuel economy
Vehicle:
Lexus
Mileage: 170000 km
NGK OEM equivalents or Denso IK22 for a slight bump in performance.
Pros: slight bump in performance
Vehicle:
Honda Fit
Bought some Denso 3450 Irdium plugs online. After reading about counterfits. I decided to test mine.
All are gapped .43 for the OEM spec for a 2014 Nissan Xterra. I measured the Irdium electrode tip which is 0.7mm and appears blue
Pros: gapped to OEM spec
Cons: potential counterfeit risk
Vehicle:
Nissan
Part number: 3450
I tried one of the economy plugs on my 02 Accord. Ended up having to chuck it and buy a Denso.
Pros: learn from my mistake
Cons: waste of money
Vehicle:
Honda Accord
I tried Denso once. I took Denso’s out and replaced them with Denso’s. They ran for 500 miles and quit.
Cons: quit after 500 miles
Mileage: 500 km
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