Chev Bowtie Proform Slant Edge Aluminum Breather Caps # 141-855 Slant-Edge AluminumPush-In Air Breather Cap Polished; Recessed Red Bowtie Emblem Fits Hole Size 1.22"; 2.5" Diameter Features: Push-In Style; Patented Slant-Edge Design (U.S. D905,114) Reflective Polished Finish Made from High-Quality Die Cast Aluminum Recessed Red Bowtie Logo on Top Fits 1.22 Inch Valve Cover Hole 3-in. Tall 2.25-in. Diameter Grommet Not Included Officially Licensed Chevrolet Performance Parts Product Sold Individually