Remote Breather Tank - w/12an Fitting

The Remote Breather Tank with 12AN Fitting by Moroso is an essential component for serious engine builders and street performance enthusiasts who demand reliable crankcase ventilation. This tank serves as a remote catch reservoir for positive crankcase ventilation (PCV) systems, capturing oil vapors and moisture that would otherwise foul intake manifolds and degrade fuel quality. Whether you're running a built small-block, big-block, or modern LS platform, this remote breather solution isolates blow-by gases from your engine's intake tract, preserving combustion efficiency and reducing unwanted backpressure.

Constructed with precision engineering, the Remote Breather Tank features a 12AN fitting that provides a direct, low-restriction connection point for your PCV hose routing. The compact yet functional design allows for flexible mounting in tight engine compartments, with dimensions of 8.45 x 4.8 x 8.65 inches and a lightweight 1.82 lbs footprint that won't strain mounting brackets or add unnecessary mass. The tank's internal baffle design promotes effective oil separation and settling, allowing vapor to escape while heavier oil droplets gravity-drain back to the sump via a separate return line. This dual-path ventilation strategy maximizes air-oil separation efficiency while maintaining consistent crankcase pressure across varying engine speeds and boost conditions.

This remote breather tank is ideal for carbureted engines, fuel-injected platforms, supercharged builds, and turbocharged applications where factory or crude breather systems fall short. Moroso's proven design works seamlessly on street engines, weekend warriors, and road course competitors seeking better ring blow-by management and cleaner intake surfaces. Installation requires basic hose routing from the crankcase vent line to the 12AN inlet, with a return line back to the oil pan or valve cover—a straightforward upgrade that delivers measurable gains in reliability and longevity. Pair this tank with quality PCV hoses and appropriate fittings to complete a professional-grade crankcase evacuation system that protects your investment.