The purpose of our Envoy cold air intake is to pump a mammoth dose of fresh air into your car's engine. The result of that GMC Envoy cold air is an instant increase to your auto's horsepower and torque. Backed by respected name brands like K&N, Volant and Injen, our GMC Envoy cold air intake systems are sure to meet your performance needs. And, if they don't, each and every GMC Envoy cold air intake in our stock is backed by a 90-day money back guarantee, ensuring your complete customer satisfaction.