The weapon R oil catch can features a stunning full mirror polished finish and includes all the brackets, hoses, and hardware needed for an easy installation. The Weapon R oil Catch can catches the oil and moisture in the blow-by gas that causes carbon and sludge build-up in the SRT-4 intake system and the engine. It keeps the engine clean even under hard driving conditions. It is also an excellent engine dress up item that gives a racecar look. With a turbo car, there is more blow by oil which over time will "gunk" your intake with oil and residue.