Did it myself. Not hard at all, just takes time. Gotta remove the coils, plugs and the valve cover bolts. The hardest part was getting to the bolts at the rear. What a bitch. Other than that, pretty simple. Make sure you have a sealant on hand to make a tight seal. Took me about 2 hours but that was because of the rear bolts. Otherwise plan on forking out about $200 at the dealer. Good luck.