The Garrett® engineers are asked many such questions regarding our water-cooled turbochargers. Many customers question the necessity or benefi ts of plumbing in those extra water lines to the sides of the turbo’s center housing. Why not just leave them off? The reality is that a water-cooled turbo can be damaged irreparably without proper water line setup. With a little background and some explanation of what water cooling really does for turbochargers, this Garrett® white paper will hopefully convince a skeptic that the benefi ts provided by water-cooling are worth the small effort required to properly set it up.