vs
Spark plug Denso or BERU
2019 4 gen - dealer sparkplugs were part number ZC20HPR11 > Denso spark plug.
I’m from EU, Scandinavia and that part number were on my original ones I pulled out.
Vehicle:
Mazda
Part number: ZC20HPR11
Plugs(Denso IK22) coils(DENSO or Hitachi) and a valve adjustment, all due at 100k. They really do make them run better and much more reliably.
Pros: run better, more reliably
Mileage: 100000 km
I installed Denso a few weeks ago.
Pros: installed recently
Densos. Buy them off rock auto.
Pros: none
Cons: gapping suggested
Vehicle:
Volkswagen Golf
The Denso IHKs are my go to for the last 10k on their tune.
Pros: reliable, good performance
Cons: gapping info mixed
Mileage: 10000 km
Either one, but I found the Denso to be cheaper and easier to get. No issues with them.
Pros: cheaper, easy to get
Cons: none
Vehicle:
Volkswagen Golf
You can usually find DENSO IRIDIUM Spark Plugs , which are the OEM Supplier, for about $15 each at any Advance Auto or other major auto parts store.
Pros: easy to find, oem supplier
Yesss got denso coils and spark plugs off their site and they have been great
Pros: great performance
For what it's worth, I've changed my plugs twice (OEM to Denso to Beru-RS7) and never noticed any oil or any difference in color between the plugs.
Pros: no oil, no color difference
the densos work fine, the point of swapping is not for any performance gain, rather to prevent shattered ceramic from raining into your cylinders
Pros: work fine (normal use)
Cons: risk of ceramic shattering
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