Not sure which 2007 GMC Envoy Air Intake Systems are right for you? We have over 274 customer reviews, with an average rating of 4.5, to help you find exactly what you're looking for. Donald H from Independence, MO said, "I am very pleased with the perfprmance of the K&N 63 Air Charger. I bought this due to previous experience with K&N. Installation was a bit of a problem due to some incomplete instructions. All in all, very pleased with it & will gladly purchase one again if needed."