Spark plug Autolite or Denso

If its just painted like some cheap plugs such as some autolites then yes its needed.

I have the denso ikh24 and no problems for me.

ive ran the denso plugs in my stage 2 gli, and they worked great, had no issues with them.

Denso IKH24 plugs gapped to 0.024". 6,900 miles. APR Stage 2 tune. Only issue was CEL error when we installed the Unitronic downpipe and flashed to the stage 2 tune. After troubleshooting and contacting APR, they had my shop re-flash to a stage 2 beta file, no more CEL error.

IS38 APR tune with Denso IKH24 plugs, no brainer cheap insurance.

I did swap in Denso IKH24 at APR recommendation. Runs nice and have no issues to share

autolites 3923 platinumsgave me the same mpg as the expensive NGK platinum.....

Skip them, they are junk and a waste of money.

Get a good single platinum plug like the Denso 4511.

Throw them away, they're shit plugs. Autolite just didn't crack the code for making quality iridium plugs at a super cheap price. I wouldn't even put these in my lawn mower.

Don't buy Autolite spark plugs. They suck. I had 2 out of 4 in a pack that were faulty and failed within days of installing them.