vs
Spark plug Autolite or Denso
I've always used the Denso SK20R11 plugs in mine and been pleased.
Pros: been pleased
Part number: SK20R11
Denso iridium plugs, no more no less and no exceptions.
Pros: high quality, reliable
denso iridium. do them and they’ll be good for another 200k km or more
Pros: good for 200k km
Mileage: 200000 km
Ran Autolite Iridum XP XP3922 plugs in it and had zero issues at about half the price of the NGK plugs, and I had a mild tune.
Pros: zero issues, half price
Vehicle:
Chevrolet Cruze
Part number: XP3922
Denso and Bosch have worked well for us on a 1.6.
Pros: worked well
Vehicle:
Ford
Denso itv20 (5339) for stock/mostly stock. ITV22 (5340) step colder if more mods. I have only used itv22 since 2015.
Pros: good for stock
Cons: only for stock
Part number: 5339
I ran Denso iridiums for 100,000 miles on mine, they looked usable when I pulled them. Replaced them with NGK's, no difference in power generated.
Pros: high mileage, usable condition
Cons: no power difference
Mileage: 160934 km
my truck uses denso and NGK dual electrode plugs and will run very poorly if u try to use anything else
Pros: dual electrode plugs
Cons: runs very poorly
With almost every car, using OEM plugs is the way to go. The one brand to ALWAYS avoid is Autolite. They are extremely poor quality and I have never seen them work long enough to justify the cost saving.
Pros: OEM plugs are best
Cons: poor quality, short life
Autolite plugs are bad.
Cons: bad quality
Part number: FR7HE02
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