Poly Breather Tank w/12an Fitting

The Poly Breather Tank w/12AN Fitting from MOROSO (MOR85400) is a bolt-on overflow recovery system designed for high-performance engines and racing applications where crankcase ventilation management is critical. This compact polyethylene breather tank captures excess blow-by gases and fluid, preventing contamination of the engine bay while maintaining proper crankcase pressure. Tactical and motorsports professionals rely on breather tanks to protect engine internals and extend service life in extreme operating conditions.

Engineered with a 3.125-inch diameter and 10.5-inch height, this one-quart capacity tank accommodates significant fluid recovery without frequent draining. The 12 AN bulkhead inlet provides a secure, high-flow connection point for crankcase hose systems, while the integrated petcock drain valve allows controlled, mess-free fluid disposal during maintenance. The durable black plastic construction resists corrosion and thermal degradation, and the included breather element filters incoming air to prevent moisture and particulate contamination. With a total weight of 1.22 lbs, installation adds minimal mass while delivering reliable overflow management in tight engine compartments.

This breather tank is ideal for street-driven performance vehicles, off-road platforms, and competition engines that demand robust ventilation solutions. The 12 AN fitting accommodates standard motorsports hose sizes and quick-disconnect couplers, making integration straightforward with existing or upgraded crankcase systems. Installation requires only basic hand tools and hose routing to the engine's positive crankcase ventilation (PCV) or catch can circuit. Proper breather tank sizing and placement ensure optimal engine longevity in demanding environments where standard OEM ventilation proves insufficient.