A breather is the small part that finishes a valve cover, and a mismatched one stands out more than you would expect. This is the black crinkle version with a raised bowtie on top, sized for the standard 1.220 in. grommet hole, and the hood over the vent keeps oil mist from being thrown out onto the cover.

Proform 141-754 Push-In Valve Cover Breather Cap Features:

• Fits a 1.220 in. valve cover breather hole.
• Push-in style, no clamp or thread required.
• 3 in. overall diameter and 2.500 in. tall.
• Raised Chevrolet bowtie emblem on the top face.
• Hooded design helps contain oil mist.
• Black crinkle finish to match Proform valve covers.
• Officially licensed GM Performance Parts product.
• Sold individually.