Review on Pack of 4 Autolite 104-4PK Copper Resistor Spark Plugs by Tommy Diaz

I purchased these spark plugs for my automotive vehicle, and they have exceeded my expectations. As a result of using this product, I found that my car runs smoother and starts without any issues. The copper resistor ensures that there is less interference with electronic signals. The only con is that they are a bit pricier than other options, but the quality is worth it. I highly recommend these ignition parts if you're looking for reliable and high-performing spark plugs for your vehicle.