Oil Catch Can/Separator

The K AND N ENGINEERING Oil Catch Can/Separator (Model 81-0816) is an essential emissions control and engine protection component for turbocharged and supercharged vehicles, as well as high-performance naturally aspirated engines prone to excessive crankcase ventilation. This catch can intercepts oil vapor, condensation, and blow-by gases before they recirculate through the intake manifold, preventing carbon buildup on intake valves and reducing overall engine wear. Whether you're running a tuned daily driver or a weekend track car, a quality oil separator protects your fuel system from dilution and maintains optimal combustion efficiency.

K AND N's design uses baffled internal separation chambers to coalesce oil and moisture, allowing only clean air to pass back into the intake system. The compact 7 x 3.13 x 13.38-inch format and lightweight 2.64 lb construction make installation straightforward on most modern powerplants without requiring extensive engine bay modification. The can features a serviceable drain plug for routine maintenance and polished aluminum construction that resists corrosion while maintaining a clean appearance in visible engine compartments. This design approach ensures consistent separation performance across varying boost pressures and throttle inputs, critical for forced-induction applications where crankcase gases are most aggressive.

Engine builders, tuners, and serious enthusiasts rely on catch cans to extend valve life, reduce carbon cleaning intervals, and protect turbocharger longevity on modified vehicles. Installation typically involves plumbing the positive crankcase ventilation (PCV) system through the can before returning to intake, requiring basic hose routing and clamp work. For owners pushing boost levels beyond factory specifications or running extended oil change intervals, this separator becomes insurance against internal carbon accumulation and fuel contamination. Compatibility varies by platform, so verify hose diameter and PCV configuration before purchase to ensure proper fitment with your specific engine setup.