V/C Breather Filter w/ Shield

The V/C Breather Filter with Shield from Allstar Performance is an essential engine breather component designed to prevent crankcase vapors from escaping into the atmosphere while protecting your valve cover from contamination. As an experienced mechanic, you know that a quality breather filter maintains proper crankcase ventilation—critical for reducing pressure buildup, extending engine life, and meeting emissions standards on both street and competition engines. This compact, lightweight unit is engineered for builders who demand reliability without sacrificing simplicity or durability.

The integral shield design protects the filter element from oil splash, moisture, and road debris while the breather cartridge traps suspended particles and condensation before they re-enter your crankcase. Allstar's engineering focuses on flow efficiency—the filter element is sized to minimize backpressure while maximizing filtration, a balance that matters when you're tuning for power and reliability. The compact 2.5 x 1 x 4 inch envelope fits tight engine bays, and at just 0.02 lbs, it adds negligible weight while delivering dependable crankcase management for carbureted and fuel-injected applications alike.

Street rodders, circle track competitors, and engine builders trust this breather filter for naturally aspirated small-block and big-block engines where crankcase evacuation is non-negotiable. Installation is straightforward—thread onto your valve cover breather port and secure with hose clamps if running a hose to a catch can or vacuum source. Whether you're running a fresh rebuild or maintaining an established power plant, the Allstar Performance V/C Breather Filter with Shield delivers the filtering performance and design flexibility serious enthusiasts expect.