Breather Tank/Catch Can w/12an O-Ring Port

The EARLS Breather Tank/Catch Can with 12AN O-Ring Port (CT100ERL) is a compact aluminum separator designed to intercept crankcase vapors and prevent oil carryover in high-performance and turbocharged engine systems. This bolt-on breather catch can captures blow-by before it enters the intake manifold, protecting fuel system components and maintaining cleaner combustion—a critical upgrade for engines running elevated boost or extended duty cycles.

The unit features a 3.15-inch diameter aluminum body with 0.75-liter capacity and a 12AN female O-ring inlet port, ensuring compatibility with standard braided line configurations used in modern forced-induction builds. The included integral breather valve prevents backpressure while the drain outlet allows collected oil to return safely to the crankcase or catch-can reservoir. Measuring 13.25 inches tall and weighing 1.85 pounds, the can integrates into engine bay layouts with minimal space impact. Natural aluminum finish resists corrosion in typical operating environments.

This catch can serves engine builders and off-road users who prioritize fuel system reliability and separation efficiency under sustained load. It's suitable for turbocharged gasoline engines, supercharged applications, and high-output naturally aspirated platforms where crankcase pressure management prevents vacuum leaks and fuel-air ratio drift. The 12AN port standard makes hose routing straightforward in custom fabrication scenarios and supports repeatable, professional-grade installations.

EARLS is recognized for precision aluminum components in performance cooling and fuel systems, and this breather tank reflects that heritage through solid construction and proven valve design. The modest capacity and bolt-on mounting style allow placement in tight underhood spaces without requiring complex brackets or plumbing rework.