V/C Breather w/ Shield 1-3/8in

The Allstar Performance V/C Breather with Shield 1-3/8 inch is a half-shielded crankcase ventilation breather designed for engine bay applications requiring reliable positive crankcase ventilation (PCV) management. This clamp-on breather attaches securely to 1-3/8-inch OD tubing and provides effective vapor management while the half-shield design offers protection from road debris and moisture ingress—a critical consideration for engine longevity in demanding operating conditions.

Constructed from durable steel with a corrosion-resistant chrome finish, this reusable breather withstands repeated thermal cycling and exposure to oil vapor without degradation. The chrome plating provides both functional corrosion protection and a professional appearance suitable for show-quality engine builds or high-performance street applications. The compact footprint (3.8 × 3.45 × 3.9 inches) and lightweight design (0.47 lbs) make it practical for tight engine compartment layouts without adding unnecessary bulk or weight penalty.

This breather is suited for engine builders, performance enthusiasts, and mechanics seeking a proven solution for crankcase ventilation systems on naturally aspirated or forced-induction powerplants. The reusable construction eliminates recurring filter replacement costs, making it an economical choice for frequent drivers and track-day competitors. Proper PCV routing prevents crankcase pressure buildup, which protects seals and gaskets while improving overall engine reliability and extending service intervals.

Allstar Performance is recognized in the engine building and hot rod community for straightforward, dependable components that prioritize function over unnecessary complexity. The half-shielded design strikes a balance between open-air breathing and environmental protection—ideal for builds where aesthetics matter but full enclosure would restrict airflow or complicate maintenance access.