Reviews of Denso spark plug

I’ll stick with NGK and Denso.

Denso or ngk. Bosch at worst. I would recommend against the off brand in your photo.

I bought the absolute cheapest plugs available ($1.50/plug), and they are branded "Denso Toyota Iridium" - I assume fakes, but my magnifying glass does seem to show an iridium tip, and they work great.

Ive got the densos twin tips in a vxr at present. One thing i can tell you is they dont like heat!!! i recently had a small coolant leak and they would misfire. pretty low heat resitance i think. work fine on cooler engines.

I did Denso 3297 from RockAuto. They work great.

I've always used the Denso SK20R11 plugs in mine and been pleased.

Denso iridium plugs, no more no less and no exceptions.

denso iridium. do them and they’ll be good for another 200k km or more

Had some Denso plugs in my '15 WRX (unaware to me) and the plug in cylinder 2 was fouled within 7k miles and caused a misfire. Turns out the shop that the previous owner took it to for the 60k-mile plug change decided to cheap out. I now have OEM plugs :D

Careful with Denso, back in MK7 days some complained that the plugs would shatter and cause engine damage.