Another question that I have is for my BMW X5 2004 3.0 E53 Model (with only 65,000 miles) is that I have to change the connector boots with the spark plugs. I can't seem to find them. Do they make connector boots for my car? The dealer is telling me that they only sell Coils with the boots. I am assuming that I don't need to replace the boots when I replacing the spark plugs.