The NX Purge System is designed to purge the air from your nitrous lines to allow immediate and consistent activation of your Nitrous system. This system includes a Lightning solenoid, push button for activation, and a vent tube to direct the purged nitrous out of the solenoid. This purge system also includes the needed hardware to accommodate plate systems with integrated solenoids. Purge System includes: Purge solenoid. Push button activation. 1/8 NPT "T" fitting. 8 inches of 3AN stainless braided line. 1/8 NPT to compression fitting. 7 inches of 3/16" stainless tubing. This is the correct purge system for the following part numbers: 20110-XX (GM MAF system) 20931-XX (5th Gen Camaro plate system) 20947-XX (Ford 3v plate system) 20948-XX (Ford Coyote plate system) Instructions PDF