Polished PCV Valve 1in OD

The Polished PCV Valve 1in OD from Billet Specialties is a precision-engineered crankcase ventilation component designed for serious engine builders and hot rod enthusiasts who demand both form and function. This valve is essential for managing positive crankcase ventilation by routing blow-by gases away from the engine while maintaining critical back-pressure, preventing oil leakage and extending engine life.

Machined from premium aluminum and polished to a mirror finish, the Polished PCV Valve 1in OD features a 1-inch outer diameter and a 3/8-inch hose barb connection that accommodates standard crankcase ventilation hose sizes common in street and strip applications. The 90-degree elbow design allows flexible hose routing in tight engine bay configurations while maintaining efficient gas flow.

This PCV valve is ideal for builders working on small-block and big-block custom engines, particularly those prioritizing visible engine compartment aesthetics. Installation is straightforward—simply connect the 3/8-inch hose barb to your crankcase ventilation line, routing gases to either a catch can or intake manifold vacuum port depending on your fuel system and emissions setup.