Valve cover breathers, caps, and grommets play a key role in managing crankcase ventilation while completing the overall look of the engine bay. Whether you're replacing worn components or upgrading for appearance and performance, properly selected breathers and related hardware help regulate airflow, reduce oil carryover (oil mist that can escape through the breather and leave residue on the engine and surrounding areas of the engine bay), and maintain clean engine operation.
Available for a range of Chevy, Ford, Mopar, Oldsmobile, and Pontiac engines, these components include push-in, clamp-on, twist-in, and screw-in breathers, oil filler caps, and rubber grommets designed to fit a variety of steel and aluminum valve cover configurations. This category also includes PCV-style breather options, breather models with vacuum tube ports, and grommets sized for both standard breather openings and smaller PCV-style applications. Many breathers feature internal baffles or filter elements to help separate oil mist from airflow, reducing oil carryover (oil mist that can escape through the breather) while maintaining proper ventilation.
Offered in chrome, polished aluminum, and color-matched finishes such as Chevy Orange, Ford Blue, Redline Red, and satin black, these components allow you to coordinate your engine bay appearance while maintaining function. Matching caps and grommets provide a complete installation solution, helping ensure proper fit, sealing, and long-term durability.
• Supports Crankcase Ventilation: Helps regulate airflow and manage internal engine pressure.
• Reduces Oil Carryover: Internal baffles and filter elements help separate oil mist from airflow.
• Multiple Breather Styles: Available in push-in, clamp-on, twist-in, and screw-in configurations, including select PCV-style breathers and models with vacuum tube ports.
• Matching Installation Components: Includes breathers, oil filler caps, and grommets sized for both standard breather openings and smaller PCV-style applications.
• Multiple Material Options: Available in chrome plated steel, aluminum, and rubber components.
• Coordinated Finishes: Offered in chrome, polished aluminum, satin black, Chevy Orange, Ford Blue, and Redline Red finishes.
• Designed for Street & Performance Use: Suitable for stock replacement, performance builds, and custom engine applications.
A valve cover breather allows air to move in and out of the engine to help regulate crankcase pressure while reducing oil mist escaping from the engine.
Yes, push-in breathers require a properly sized rubber grommet to ensure a secure fit and proper sealing within the valve cover opening. Depending on the application, grommets are available for standard breather openings as well as smaller inside diameters used with PCV-style breathers.
Push-in breathers install into a grommet in the valve cover, while clamp-on breathers attach to a tube or breather opening using a clamp. The correct type depends on the valve cover design.
Yes, breathers are commonly used alongside PCV systems to allow fresh air to enter the engine while the PCV valve removes crankcase gases.
Breathers with internal baffles or filter elements help reduce oil carryover, but proper engine condition and ventilation setup are important to minimize oil leakage.
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