CFM Performance now makes it easy to vent the crankcase on your 2005-08 Mustang GT with our new billet valve cover baffled breather kit. This kit is a direct replacement for your factory oil fill cap and allows unwanted crankcase pressure to exit. The proprietary internal baffle substantially reduces oil particle travel without affecting air flow. The filter element is washable and has a chrome top for great looks. The pre-oiled cotton fiber traps dirt particles without restricting air flow. Although this kit was designed for use in racing applications, it works and looks great on any engine compartment.