Spark plug Denso or OEM Audi

I run [Denso 5749](https://www.densoproducts.com/denso-5749-ikh01-24-iridium-racing-plug) non projected tip plugs with my FBO IS38 car.

They're 1 step colder, and non projected so the risk of a strap breaking off [\(like this\)](https://i.imgur.com/gdJFaJ4.jpeg) are extremely rare.

Denso or Bosh are the best you can return and get new ones

Use NGK and if you can’t find them then go Denso. The only 2 plug brands I would put in a Honda.

My 2010 RX350 with the same V6 has 170k on it and still gets me 24 MPG - Denso factory plugs are life, prove me wrong.

NGK OEM equivalents or Denso IK22 for a slight bump in performance.

I’m running Denso plugs in my car…no issues to report.

I’ll stick with NGK and Denso.

My 2010 came with denso, replaced them with ngk at 100k, then at 200k replaced them with denso…not sure if it made a difference

I got some phony Denso marked spark plugs

Porcelain tip fell off one Denso spark plug in cylinder 1. Doing less the 200km distance. Motor is f@$ked.