Autolite HT1 High Thread Spark Plug, Pack of 1

Item received in a timely manner. Plugs work well. Do your research to find the Ford TSB for changing this type of plug in a modular engine before starting the work. The factory plugs are known to break during removal if the procedure is not followed.

Have a '07 V8 Mustang GT with less than 5K on the clock. I pulled them at 3K and cleaned them and applied anti-seize. The car is a 5 speed that although I don't beat it, it does get "DRIVEN". No granny drivers here! My first choice was Bosch but they don't make them. I got these on special at a local retailer for $12 each which is a bit steep. Make sure you read the tech bulletin autolite has, it may be helpfull. The car runs great! Hopefully these will perform better that the factory plugs which in my opinion are SH**!

I just got done spending 5 hours replacing the plugs on my Ford F-150 5.4L, using the Autolite HT1 plugs & subsequently have a miss on the #8 cylinder. My mechanic friend says he has learned to use ONLY the Ford Motorcraft plugs for the F-150. I now have to laboriously swap out all of these Autolite plugs. Extremely frustrating.