$20 Mail-In Rebate on Qualifying Part Numbers! - 9904 Spectre Cold Air Intake fits: 2001-2004 Chevy Silverado, 2001-2004 GMC Sierra. 9904 Spectre Cold Air Intake Features - Increase horsepower, torque and improve your fuel economy with Spectre Cold Air Intakes. Custom-designed to fit your car, truck or SUV. Mandrel-bent chrome tubing boosts airflow and looks good. Includes airfilter, all necessary brackets, couplers, clamps and adapters. Easy installation so you get your street-ready look fast. Spectre Cold Air Intake - Read 362+ Reviews & Gain HP w/Spectre CAI Kits & Systems. Spectre 9904.