Gunmetal Gray Valve Cover Breather Oil Cap for 2008-2010 Hummer H3 & 2009-2010 H3T Alpha 5.3L Engine - High Performance Replacement Part - Perfect for Off-Roading, Engine Upgrades & DIY Car Maintenance

“NOT FOR SALE/LEGAL IN CALIFORNIA/CARB STATES. ORDERS WILL BE CANCELLED AND REFUNDED“ CFM Performance now makes it easy to vent the crankcase on your engine 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. This breather is the ONLY one in the market which incorporates a check ball to keep unmetered air from coming through while the crankcase is under vacuum. In other words, this breather acts just like a factory oil cap under normal driving conditions and when you get into boost it will release any crankcase pressure present. The proprietary internal baffle keeps oil particles away from the breather element. The filter element is washable and has a variety of top finishes for great looks. Although this kit was designed for use in racing applications, it works and looks great in any engine compartment.

CFM Performance valve cover breather is the ONLY one in the market which incorporates a check ball to keep unmetered air from coming through while the crankcase is under vacuum

Acts just like a factory oil cap under normal driving conditions and when you get into boost it will release any crankcase pressure present