Breather - Crankcase Vent

The Chevrolet Performance Breather crankcase vent system is essential for any serious engine builder or street-performance enthusiast looking to manage internal pressure and extend engine life. This clamp-on round breather prevents oil carryover into the intake manifold while filtering incoming air, a critical function on both stock and modified engines running positive crankcase ventilation (PCV). Whether you're upgrading a small-block Chevy or managing boost pressures on a turbocharged application, proper crankcase breathing keeps your engine running clean and reduces the risk of seal leaks and gasket failure.

Constructed from durable chrome-plated steel, this filtered breather features a half-shielded design that protects the element from direct water spray while maintaining unrestricted airflow. The 1-3/8 inch outer diameter tube accommodates standard hose connections found on most Chevrolet engines, and the integrated filter media captures oil mist and particulates before they recirculate into the combustion chamber. The matched pair configuration allows symmetrical installation on dual-valve systems, reducing turbo lag and ensuring balanced crankcase pressure across both cylinder banks on high-performance applications.

This breather is ideal for street rods, race engines, and forced-induction builds where factory PCV systems fall short. Installation is straightforward—clamp the breather to your custom valve cover or manifold vent line using standard hose clamps—making it a perfect retrofit for aftermarket engine swaps. The iconic Chevy Bowtie logo provides authentic OEM appearance while the chrome finish integrates seamlessly with show-quality engine bays. Pair these with quality silicone hose and clamps to complete a professional crankcase management system.