Part number 21950 is a billet-aluminum oval breather designed for use in 1¼″ valve-cover holes. It features a ribbed top and a 3⁄8″ hose barb to allow for PCV hose connection. The breather press-fits securely into valve covers and includes a positive O-ring seal for a leak-proof installation. Crafted from 6061-T6 billet aluminum, it offers durable construction and a polished appearance suitable for performance and restored engines.

• Application: 1¼″ valve-cover hole
• Function: PCV or breather with 3⁄8″ hose barb
• Material: 6061-T6 billet aluminum
• Finish: Polished
• Seal: O-ring included — push-in installation
• Style: Oval ribbed top
• Includes: O-ring gasket