Thanks for the suggestion, I just didn't know if there was something special about them. Yeah, my dealership wants $150.00 for them and he would have to order them in. My truck is a 2001, but it only has 50K miles on it. I bought it in 2009, and have only put a few thousand miles on it myself. But the plug wires are still 13 years old, and one was rubbing on the exhaust manifold and would intermittently short out. So I decided it was time to replace them. Spark plugs only have 50K on them so they may still be good, I'll have to pull one and take a look. I bought a travel trailer last November, so the wife and I are starting to put some miles on the truck now. I replaced the battery this last trip too.