Hi all. New member here. Have gotten good info so I thought I would give some. There is a You Tube vid showing how to change the plugs in a 2003 3.5 L Santa Fe. In it she advises that you don't need a new intake gasket as long as the old one isn't broken. This is wrong. With all the work that's involved spend the $12 to replace it or it will seem as if you have some kind of emission control problem. Other than that it is good video.

 

Good advice to go with a new gasket...They are certainly cheap enough and why risk having a leak after spending all the time to replace the plugs...