BILLET ALUMINUM INTAKE MANIFOLD CNC machined 6061 T6 billet aluminum head flange Machined intake runner surface reduces turbulence to increase speed & volumetric efficiency of intake manifold (70% over stock intake) Accepts throttle body up to 66mm. Can be used on naturally aspirated or forced-induction (turbo, etc.) car. 17"W x 10.25"H x 6"D.