vs
Spark plug OEM BMW or Denso
NGK/Denso are good plugs for my car I used IK20 Denso plugs as they are iridium plugs which is what you want as they last much longer and are better quality
Pros: better quality, last longer
Vehicle:
Mazda
Part number: IK20
I've been running Denso Iridium on 7 Saabs for years.. both 9.3 V6 and 9.5 2.3l... never an issue on any after 100s of thousand of miles.
Pros: no issues, long lasting
Vehicle:
Saab
Eqt recommends NGK 4905 or Denso 5749. I personally run the densos and they have been good so far, they spark ????????♂️.
Pros: they spark
Vehicle:
Volkswagen Golf
Part number: 5749
I'd opt for a set of 1 step colder plugs. Ideally non projected tip like [Denso 5749](https://www.fcpeuro.com/products/vw-spark-plug-denso-5749) or [NGK 4905](https://www.fcpeuro.com/products/vw-spark-plug-ngk-r74388). Though these are costly.
Pros: non projected tip
Cons: can be costly
Hondas are notoriously picky about the plugs being Denso.
Pros: plugs being Denso
Cons: picky about plugs
Vehicle:
Honda Accord
I’ve used denso IK20TT in whiteblocks and they work very well, may need to re gap if you have some boost raising shenanigans going on
Pros: work very well
Cons: may need re-gapping
Part number: IK20TT
I've never had any issues with Denso plugs, so I recommend those :)
Pros: no issues with Denso
Vehicle:
Volvo V60
I just completed my first spark plug change on my G20 330 at 40k miles. Three of them especially Cylinder 1 came out "wet" and I'm unsure if it's oil.
Cons: wet spark plugs
Vehicle:
BMW
Mileage: 64373 km
Yes! I had a set of iridium spark plugs bought off Amazon that were counterfeit! They were denso but I didn’t discover it till about 40k miles later when I had a misfire. Pulled plugs and they were toast… first set lasted 120k and looked fine..
Cons: plugs were toast, misfire
Mileage: 64373 km
I tried Denso once and didn't have great luck with them.
Cons: not great luck
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