🔌 Improved Denso 3297 Spark Plug for Optimal Engine Performance Review

I have an old truck from 2003 and it uses some gas with a 4.7 liter V8 engine. Well, he still drinks gas, but a lot less, and good old strength is back.

Installed myself, the product works perfectly. Although the packaging it came in was ugly. All 6 spark plugs were loose and flying freely around the package. Luckily no parts were damaged.

Either I received defective spark plugs or they are fake spark plugs. I bought 8 of these and in less than 3 months one spark plug electrode broke in the cylinder and two were burned enough where the porcelain was coming off. I checked 2 more, both had burned porcelain but didn't come off. I have to change all 8 again, I don't think I'll buy them from Revain. I just hope my motor is defective.