vs
Spark plug Autolite or Denso
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
I’m running Denso plugs in my car…no issues to report.
Pros: no issues
I’ll stick with NGK and Denso.
Pros: reliable brands
I bought the absolute cheapest plugs available ($1.50/plug), and they are branded "Denso Toyota Iridium" - I assume fakes, but my magnifying glass does seem to show an iridium tip, and they work great.
Pros: work great
I did Denso 3297 from RockAuto. They work great.
Pros: they work great
Part number: 3297
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
Had some Denso plugs in my '15 WRX (unaware to me) and the plug in cylinder 2 was fouled within 7k miles and caused a misfire. Turns out the shop that the previous owner took it to for the 60k-mile plug change decided to cheap out. I now have OEM plugs :D
Pros: now have OEM plugs
Cons: fouled within 7k miles
Vehicle:
Subaru
Mileage: 7000 km
Careful with Denso, back in MK7 days some complained that the plugs would shatter and cause engine damage.
Cons: plugs would shatter
Vehicle:
Volkswagen Golf
Put autolites in my Durango, ran like junk nd put NGK in and better.
Pros: NGK is better
Cons: Autolite ran like junk
Vehicle:
Dodge Durango
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