Boost Cooler kits are supplied with 2x nozzles and hardware to mount only one or the other. This upgrade allows the additional nozzle to be run at the same time. Included are a "tee", junction piece with quick-connect fitting, a nozzle holder and short section of hose. Helpful when a spray volume greater than one nozzle can provide is required, when optimizing for both intake cooling and detonation suppression, or for use with individual throttle body/carburetors. Part is included in USRT dual mount package.