5339 Valve Cover Breather Grommet Set - Rubber PCV Valve Grommet for 1-1/4 Inch Filler Ports, One set contains two sealing rings with different inner diameters. There are a total of three sets of this product  Precision Fit for 1-1/4" Ports:​​ Suitable for all valve covers with 1-1/4 inch filling port vent holes  ​Premium Rubber Construction:​​ High-quality ​rubber grommet valve cover​ material ensures a secure seal and vibration resistance, meeting or exceeding OEM durability standards.  ​Complete PCV Solution:​​ ​Valve cover grommet set​, ​PCV grommets​ for breather/PCV valve installation on valve covers.  ​Simple DIY Replacement:​​ Easily installs in minutes – push out the old grommet and press the new ​PCV valve grommet​ firmly into place. No specialized tools needed.  ​Reliable Performance Guarantee:​​ If you encounter any issues with your ​valve cover breather grommet, contact us for prompt assistance and resolution.