Autolite 3924 Spark Plug Copper Core (4 Pack)

Remember to adjust the spark gap !At first I install without adjusting the gap. The car runs but with poor acceleration( weak power).Then I dick up the old ones from my garbage can, and match up the spark plug gap then reinstall, Whoa La!! the car run just like a new engine.Cooper plug in fact has a better conductivity then the platinum one; hence, better performance. Only that cooper has shorter life. But with price like this, I wouldn’t mind to change them every few years.

These spark plugs were recommended by my engine manufacturer and so far are working as expected.

Good fit , just very minor gap adjustment for my Yaris

Good value. No packaging. Just a plastic bag. That's ok no damage.

Work fine. They’re the least expensive. I had NGK that I prefer. I would buy the NGK if I needed to replace today.

Fit perfect

I used this to replace the factory spark plug.

True product thought it was to good to be true I was wrong ford plugs times 10 coils look solid will write another review after I put them in