Proform Ecklers Engine Valve Cover with White Chevrolet and Bowtie Proform 141 116: Die Cast Aluminum Tall Valve Covers for 1958 1986 SBC Proform , Slant Edge Aluminum Push In Air Breather Cap, Red; Raised What Is A Breather Cap at Rosalind Caine blog CNC Machined Rear Bowtie badge Steinhauser Design. No more stamped steel breather caps for aluminum valve covers! Complete your engine dress up look with a breather cap that actually matches your look! These new Slant Edge aluminum push in breather caps are available in five different finishes, and with just about every Bowtie emblem configuration imaginable: raised and milled, recessed with inlaid paint, the unique recessed raised blackfield, and even no emblem at all. The vivid 3D Bowtie emblem gives this 2. 5 inch diameter breather cap a bold clean look. Features: Push In Style Raised Machined Bowtie Emblem Made from High Quality Aluminum Black Crinkle Finish Fits 1. 22 Inch Valve Cover Hole Diameter: 2. 5 Inch Grommet Not Included Officially Licensed Chevrolet Performance Product Sold Individually