STILLEN 402834FX Hi-Flow Intake Kit With Z-Tube - 03-08 FX35 Z-Tube Constructed of Roto-Molded Plastic; Connections For All Factory Breather Tubes Increased Throttle Response, Adds Horsepower Genuine K&N Air Filter w/ 1,000,000 Mile Warranty Eliminates Factory Baffling, Increasing Flow Efficiency; Limited Lifetime Warranty