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3" CIS Lower Airbox Cold Air Intake Kit
Big Bore CIS Lower Airbox Cold Air Intake
Modified stock CIS lower airbox with 3" inlet vs sock 2.25". We use the stock location under the radiator to connect to the front of the car so the risk of hydrolock is no more than a stock factory setup. All hight temp components used in construction. Kit includes a 3D printed lower elbow that replaces the factory under radiator plastic elbow. A 3" hose with clamps and a replacement CIS lower airbox included. The factory lower airbox 2.25" inlet is removed and a 3" carbon fiber inlet grafted on. The kit fits in the factory location, with no modifications to CIS needed.
Checkout the research page for Dyno test results
Compare lower intake air boxes
- Big bore CIS lower air box 3"
- 8 valve Factory CIS lower air box 2.25"
- 16 valve Factory lower air box 2.75"
- Audi aluminum air box 3"
Kit Components
Battery removed for easy lower air box install
Completed Install
Customer cars with CIS Cold air intakes
