vs
Spark plug Denso or OEM Mazda
I like ac delco. But I recently used denso tt fine wire plugs I two different ls engines. What a difference in power. And gas mileage.
Pros: difference in power, gas mileage
I just replaced mine, at 80k, with Denso PLatinums. The same brand as the stock plugs.
Pros: same as stock
Mileage: 80000 km
Denso Iridium 1 step colder plugs. Running great on my 2017 Jetta 1.4T
Pros: running great
Vehicle:
Volkswagen Jetta
Part number: 5308 IXU22
Get the oem denso ones. There is nothing better than oem for that kind of thing.
Pros: nothing better than OEM
This is what a 202k mile spark plug looks like on an 2013 Lexus gs350 daily driver. Pretty impressed with it overall. All 6 plugs look exactly like this.
Pros: impressed with it overall
Vehicle:
Lexus
For spark plugs, denso or bust
Pros: reliable spark plugs
Vehicle:
Lexus ES
I've been running Denso (5346) IKH24 Iridium gapped .024 on APR stg1 for 48k miles and most recently on stg 2 with no issues.
Pros: no issues
Mileage: 48000 km
Part number: 5346
Denso TT iridium are so far the best ones I’ve tried in terms of performance
Pros: best in performance
Vehicle:
Ford Mustang
No discernible difference to me, positive or negative. But since I am running APR stage 1, I followed APR's recommendation.
Vehicle:
Volkswagen
The original dealership where I bought the van installed Denso spark plugs part # SXU22HCR11S which were supposed to have a gap of 0.044 but they all had either 0.039 or 0.040. Apparently no one checked the gap before putting them in.
Cons: incorrect gap, poor quality control
Part number: SXU22HCR11S
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