(New long size internal and external filter) • The oil catch can can trap oil and moisture in the blow-by gases that come out of the oil vapor valve and go to the engine's intercooler and catalytic converters. Over time, it causes clogging of the catalytic converters and also causes carbon and sludge buildup in the intake system and engine. • All oil vapors expelled by your turbocharged engine before they harm your car's performance. • Keeps the engine clean even in difficult driving conditions, as the oil catch can helps remove dirt. • The catch can prevents dirt and oils from entering the engine from your intake system. • Increases horsepower and extends the life of your engine and includes hoses, clamps, and mounting bracket. If you bought a new car and installed a catch can from the beginning, your car will remain clean, and the catalytic converters, intercooler, and throttle will remain clean throughout the car's life. For more information, go to YouTube and search for the benefits of a catch can.