Spark plug BRISK or Denso

Denso Spark plug

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
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Denso Spark plug

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
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Denso Spark plug

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
Mileage: 15000 km
Part number: 5749
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Denso Spark plug

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
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BRISK Spark plug

Call me stingy, but I have an issue paying $40 for 1 spark plug. Especially when I can run a set of Brisk Racing Plugs for $60.

Pros: null
Cons: paying $40 per plug
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