It will prevent oil from getting into pressurized turbo plumbing, which can lead to couplers coming off under boost.
capacity;Includes: Can, 4 o-ring clamps,hoses, mounting bracket and hardware;Mishimoto Lifetime Warranty;California Residents: WARNING Over time harmful oil will build up inside the turbocharger, intake manifold, intercooler and piping. Oil vapors can get into the intake system which will lower combustion temperatures and reduce overall efficiency. A Mishimoto Carbon Fiber Oil Catch Can will solve all these problems and give you the added security knowing that your performance parts are safe from harmful oil.