Product Overview Adjustment knob stays securely in place without requiring toolsKey Features No risk of overboost due to non-vibrating, fixed adjustment mechanism Optional -4AN fittings available for absolute seal in extreme high-boost applications Specifications Material Billet aluminum, stainless steel Adjustment Type Turn knob, no tool required Included Fittings Silicone vacuum line, T fitting, brass fitting, rubber caps Color Options Black, Red, Blue, Purple, Silver, Gunmetal Kit Quantity 1 unit Optional Fittings -4AN for extreme high-boost applications Available Configurations Part Number Configuration HBC-PRO-01 Black HBC-PRO-02 Red HBC-PRO-03 Blue HBC-PRO-04 Purple HBC-PRO-05 Silver HBC-PRO-06 Gunmetal Applications High-boost turbocharged enginesWhat's Included 1 Boost Controller with Steel Ball and Heavy Spring 1 x 3' Silicone Vacuum Line 1 Mounting Bracket 1 T Fitting 1 Brass Fitting 2 Rubber Caps 6 Zip Ties 1 Installation Instructions