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Your cart is empty. CFM Performance now makes it easy to vent the crankcase on your engine with our new billet valve cover breather kit. This kit is a direct replacement for your factory oil fill cap and allows unwanted crankcase pressure to exit.
Our breather is the original on the market to incorporate a one way check-valve, keeping unmetered air from entering while the crankcase is under vacuum. In other words, this breather acts just like the factory oil cap, sealed under normal driving conditions. Only until positive pressure becomes present does the breather open to vent unwanted crankcase pressure.
This breather also has an integrated three-layered baffle and stainless steel mesh disc media to help contain oil particles that are carried by the crankcase pressure.
Our filter elements are washable and can be re-oiled similar to most aftermarket filters (i.e. K&N). Our large selection of high quality finished filter tops will be sure to add some style to your engine bay.
Although this breather was designed for use in racing applications, additional crankcase pressure ventilation is beneficial for any motor. Plus, our breather looks great in any engine bay!
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August 30, 2025
Very nicely made, fit beautifully. Currently using until catch cans are installed and may keep in after they are installed. Good design and looks good. Definitely not a cheap made product.
wolfgang schulz
August 6, 2025
The CFM Performance Baffled Billet Valve Cover Breather arrived in a timely manner, was well packaged and had no damage. This American companies produduct fit well, as described and took 2-3 minuits to install. You must take the rubber top piece with the filter off first before installing the aluminum part that replaces the oil filler cap. Then just reinstall the breather part on the aluminum fitting.
kevin
June 30, 2025
Looks and functions flawlessly
Jeremiah hall
May 4, 2025
Looks great under the hood.
Grant Elkins
February 27, 2025
Looks and fits great, but a little expensive
Tony
December 10, 2024
Looks awesome, and super easy to install.
Jonathan Koen
November 18, 2024
Nice
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