Not sure which 2008 GMC Sierra Cold Air Intakes are right for you? We have over 13977 customer reviews, with an average rating of 4.5, to help you find exactly what you're looking for. Here's what some of our customers have said:
"The K&N 63 Series made a big difference on the car. My car is much louder and i am getting alot more horsepower... I recntly reset my MPG on my car and i recieved 17 MPG on a roadtrip i took. It was awesome" —Eduardo D from Sugar Land, TX bought a K&N 63 Series AirCharger High-Flow Intake Kit for a 2008 GMC Sierra.
"Installed intake in my 2003 GMC Sierra 5.3L V8. Took about 45mins. Looks great. Sound really good when you stomp on it!! U can feel lil bit more power off of take off and throughout rpms. Overall, its a good product! Can't really tell if I save gas cuz I stomp on it more and plus I have 24 inchs rims which already messed up my mileage. But will test soon." —Steven S from Houston , TX bought a K&N 77 Series Metal Intake Kit for a 2008 GMC Sierra.
"This is a great product. The jeep has a nice growl when accelerating, not too loud. The gas mileage has improved around 3.5 - 4.5 m/g in the city and this weekend will be the highway roadtrip test. Easy to install...I did it myself in about 1.5 hours with no prior auto experience above changing flat tires and batteries. The directions were easy to follow and the only difficult part was getting to the bolt at the back of the old airfilter box. Excellent buy and don't be scared to try installing it yourself.buy the tools listed on the directions and dive in." —Charles L from San Antonio, TX bought a K&N 63 Series AirCharger High-Flow Intake Kit for a 2008 GMC Sierra.
"Best CAI on the market by a long shot. Took less than an hour to install. Really wakes up the engine with a nice deep aggressive tone. Added about 1-2 mpg. Final product installed is about as sharp as it gets. I've installed them all and the Volant is the clear leader." —Michael B from Kingston, MA bought a Volant Cold Air Intakes for a 2008 GMC Sierra.
"-Took me a while to fix it since it was my first time to get in the hood!-Instructions where fine, but could've been better with clearer images.-Wasn't 100% satisfied about the fixing, however gains made me forgive!-Was doing 7.1s before. After was doing easy 6.8s-Sound is fine as long I dont floor it, otherwise nothing much is noticeable!-One thing though, more engine heat coming in than the stock one, so dont expect much in freq. stops & heavy traffic in summer-Lost 0.5MPG in my first run, still watching though" —Mohammad B from Springfield Gardens, NY bought a K&N 63 Series AirCharger High-Flow Intake Kit for a 2008 GMC Sierra.
"works great, looks great" —Scot T from Littleton, CO bought a Volant Cold Air Intakes for a 2008 GMC Sierra.
"Nice product; big difference in air intake sound under full throttle. Installation was straightforward." —Phillip S from Huntsville, AL bought a K&N 63 Series AirCharger High-Flow Intake Kit for a 2008 GMC Sierra.
"I installed the intake kit and a Jet throttle body spacer at the same time. The instructions weren't the greatest but everything went together easily and fit the way it was supposed to. The new intake is definetly louder but i think it sounds really good. It does give the truck a little more pep. The throttle body spacer has a slight whistle around 3000 RPM, you'd swear it was a turbo. Doesn't whistle unless you're really standing on it. My mileage increase is about 1-2 mpg. Seems like the engine is able to run in 4 cylinder mode more now." —Jay Z from Amenia, ND bought a K&N 63 Series AirCharger High-Flow Intake Kit for a 2008 GMC Sierra.
"This was a excellent add on to my truck and I would recommend it to anyone. I like the sound and power I got from the K&N63 on my truck." —Manuel C from Phoenix, AZ bought a K&N 63 Series AirCharger High-Flow Intake Kit for a 2008 GMC Sierra.
"Noticable difference in throttle response and overall performance. 30 min install. Probably over priced as are all intake kits. Missing the larger elbow for the PCV hook up but made it work. Overall good looks and as promised performance. Would recommend to others." —John K from Leesville, LA bought a K&N 63 Series AirCharger High-Flow Intake Kit for a 2008 GMC Sierra.
"Installed in about 40 minutes with clear instructions and all appropriate parts included. Good looking installation. The sound is unique to other intake systems I have used in the past ie: K and N and Volant. I prefer Volant but their system is a little pricey in comparison. It's rather hard to evaluate performance gain without a Dyno but it appears to have helped. Don't know about mileage yet. I don't really think the heat shielded intakes perform as well as the enclosed types because there is a large amount of engine heat leakage around the sides where not completely enclosed. Overall a good product and I would purchase again." —John K from Leesville, LA bought an Airaid Intake System for a 2008 GMC Sierra.