Oil Catch Cans & PCV Systems for Performance Cars

Shop vehicle-specific oil catch cans, air-oil separators, PCV systems, crankcase-ventilation kits, hoses, fittings, and replacement components at Black Ops Auto Works. This collection includes direct-fit and universal systems for naturally aspirated, turbocharged, and supercharged cars, trucks, SUVs, and Jeeps from Billet Technology, MightyMouse Solutions, J&L Oil Separator Co., CORSA Performance, Radium Engineering, Mishimoto, and other manufacturers.

Oil Catch Cans and Air-Oil Separators

An oil catch can is installed within a compatible crankcase-ventilation path to separate suspended oil mist, moisture, and other contaminants from crankcase gases. Depending on the system, the remaining gases are routed back into the intake or discharged through a vented competition configuration.

A catch can is not a direct horsepower upgrade and cannot correct excessive blow-by, worn piston rings, damaged cylinder walls, blocked PCV passages, or other mechanical problems. Its operation depends on the engine’s condition, PCV design, hose routing, internal separation media, pressure control, and regular servicing.

PCV and Crankcase-Ventilation Systems

Positive crankcase ventilation uses pressure differences within the engine and intake system to move vapors out of the crankcase. The routing and flow direction can change between idle, cruise, boost, and wide-open throttle. Turbocharged and supercharged engines may also require check valves or additional ventilation capacity to prevent intake-manifold boost from entering the crankcase.

Do not reroute PCV hoses based solely on the location of the factory fittings. Follow the instructions for the exact engine and catch-can system. Incorrect routing, restricted lines, missing check valves, or incompatible venting can create crankcase-pressure problems and may cause leaks or engine damage.

Closed and Vent-to-Atmosphere Catch Cans

Closed catch-can systems return filtered gases to the intake and retain a sealed ventilation path. Vent-to-atmosphere systems release gases through a breather and are generally intended for specific competition or highly modified applications.

Closed and vented systems are not interchangeable. Confirm whether the kit retains the factory PCV valve, replaces its function, uses an external check valve, or requires a different engine calibration. Vented systems may introduce odors and may not comply with emissions requirements for a street-driven vehicle.

Direct-Fit Oil Catch Can Kits

Direct-fit kits use vehicle-specific brackets, hoses, connectors, and routing for supported applications. This collection includes systems for Dodge Charger and Challenger HEMI models, Hellcat and Demon, Jeep Grand Cherokee SRT and Trackhawk, Dodge Durango, Ram 1500 and TRX, Chevrolet Corvette, Chevrolet Camaro, Cadillac CTS-V and ATS-V, Ford Mustang and F-150, Pontiac G8, Chevrolet SS, and additional platforms.

Confirm the exact model year, engine, induction system, trim, and installed modifications. Bracket locations and hose routing may change between engine generations, body styles, factory intake systems, supercharger packages, and aftermarket engine-bay components.

Mild, Wild, and Competition Systems

MightyMouse uses terms such as Mild and Wild for different PCV-system configurations. These names refer to manufacturer-specific designs and should not be reduced to one universal horsepower threshold. Engine condition, displacement, boost, intended use, road-course operation, crankcase flow, and existing ventilation determine the correct system.

Select the system recommended by the manufacturer for the complete vehicle combination. A heavily modified street car, road-race vehicle, drag car, and daily-driven factory engine may require different pressure-control and ventilation strategies even when they produce similar power.

Single and Dual Catch Can Systems

Some engines use separate PCV and crankcase-ventilation paths. A single-can system may address one side of the circuit, while a dual-can kit can manage two separate routes. The number of cans required depends on the factory ventilation layout and the manufacturer’s system design rather than cylinder count alone.

Verify whether the listing includes one can, two cans, mounting brackets, hoses, fittings, check valves, adapters, and drain hardware. Products photographed together are not necessarily included together.

Universal Catch Cans and AN Fittings

Universal catch cans require planning around available mounting space, hose diameter, port size, heat exposure, engine movement, and the vehicle’s PCV strategy. AN size should be selected from the required airflow and actual hose or fitting dimensions, not appearance or horsepower alone.

Mount the can in the orientation specified by the manufacturer and route hoses without sharp bends, kinks, low points, abrasion, or contact with belts, pulleys, fans, exhaust components, and steering parts. Universal systems may require custom brackets, fittings, adapters, and professional fabrication.

Catch Can Inspection and Maintenance

Accumulation rates vary between engines and can change with mileage, climate, trip length, fuel, boost, driving style, and engine condition. Inspect a newly installed can frequently until the vehicle’s normal accumulation rate is understood. Drain it before it reaches the manufacturer’s maximum level.

Cold weather and repeated short trips can increase condensation. Never pour collected material back into the engine. Check hoses, clamps, fittings, seals, mounting hardware, check valves, and internal media during regular service.

How to Choose the Correct Oil Catch Can

• Confirm the exact year, make, model, engine, and induction system.
• Identify the factory PCV and crankcase-ventilation paths.
• Choose a manufacturer-approved street, performance, or competition system.
• Confirm closed or vent-to-atmosphere configuration.
• Determine whether one or two catch cans are required.
• Match hose diameter, port size, AN fittings, and check valves.
• Check the mounting location against other engine-bay components.
• Review every included hose, fitting, bracket, adapter, and fastener.
• Confirm emissions requirements for the vehicle and jurisdiction.
• Establish an inspection interval after monitoring initial accumulation.

Frequently Asked Questions

What does an oil catch can do?

It separates part of the suspended oil, moisture, and contaminants from crankcase gases before those gases continue through the configured ventilation path.

Does an oil catch can add horsepower?

A catch can is primarily a crankcase-ventilation component. It should not be purchased as a direct horsepower upgrade, and results depend on the complete PCV system and engine condition.

What is the difference between a closed and vented catch can?

A closed system returns filtered gases to the intake. A vented system releases gases through a breather. Each requires system-specific routing and may have different street-use or emissions considerations.

How often should an oil catch can be drained?

There is no universal mileage interval. Inspect it frequently after installation and establish a schedule based on the observed accumulation rate, climate, driving conditions, and manufacturer instructions.

Do I need a single or dual catch can system?

That depends on the engine’s PCV and crankcase-ventilation layout. Some applications use one can while others use separate cans for different ventilation paths.

Shop Oil Catch Cans at Black Ops Auto Works

Browse the complete Oil Catch Cans collection, explore additional oil-system components, or shop the broader Engine collection. Confirm the exact application, ventilation configuration, hose routing, package contents, emissions requirements, and maintenance instructions before ordering.