Spark plug BRISK or AC DELCO

AC Delco double platinum spark plugs belong in that engine.

Check out Brisk Silver Racing (listed as an option by EQT). You’d have to replace them more often vs iridium, but they are super inexpensive and more performance oriented (conductivity).

Put the one piece Brisk in so that you don’t have to relive that again.

I ran the Brisk plugs for 6200 miles .. a bit over the 5K recommended interval. Installed Denso 5749 plugs this weekend and maybe I'm imagining things, but it seems a bit less temperamental at highway speed passing pulls. With the Brisk's installed lately I was getting some hesitation with WOT. No more.

I went with [Brisk ER12s](https://www.fcpeuro.com/products/vw-spark-plug-brisk-racing-er12s) plugs. They are one of the plugs recommended by EQT and I have been happy with them so far. Cheaper than the NGK/Denso plugs but downside is that they are silver based, so they will wear out faster. I am at 10k miles on them now and starting to feel a little rough idle; time to re-gap or replace them.

I use them. Just replaced a set after they'd lasted 90,000 miles, only to rule out a very very tiny misfire count issue I've noticed lately. I might get a coil pack now, but those original plugs surely would have lasted longer (they say they should last for 100k).

Standard replacement CR43TS Delco plugs, and a decent brand of wires. Bosch makes nice wires. Our engines don't exactly tax the ignition system, so if it's functional, you don't stand to gain much.

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.

I wouldn't do the Brisk plugs if you're not tracking it hard. They susceptible to fouling up unless you drive it like you stole it every time.

My 6.0 never ran right unless I used AC Delco. And specifically whatever the current equivalent part number is to what the manual says.