Fits 2012-2015 Chevrolet Camaro ZL1 (6.2L).

The J&L 3.0 Oil Separator is designed to prevent oil vapors from entering your intake tract, where they can coat intake manifold runners, foul valves, and dilute fuel octane levels. This process is critical for the supercharged 6.2L LSA engine, where increased crankcase pressures often lead to excessive blow-by. By capturing these vapors, the J&L system keeps the combustion process cleaner and maintains engine performance.

Engineered for durability and efficiency, the separator is milled from solid billet aluminum and features a multistage filtration system. A fine mesh stainless steel screen first traps oil vapors, which then pass through a 1/2-inch thick, 1/16-inch aluminum honeycomb filter. Once the droplets coalesce and gain weight, they fall into the 3oz collection tank. The tank features a knurled base for easy removal and an O-ring seal to ensure a leak-free vacuum. Installation is simplified by the inclusion of factory-style quick-connect PCV fittings.

• Solid billet aluminum construction with a black anodized finish
• Multistage filtration: stainless steel mesh and 1/16-inch aluminum honeycomb
• 3oz capacity with knurled tank base for tool-free draining
• Includes factory-style quick-connect PCV fittings
• Designed specifically for the passenger side PCV line
• Manufacturer Part Number: 3082P-B

Fits 2021-2025 Ford Bronco models equipped with the 2.7L engine. This J&L Oil Separator is designed to intercept oil vapors before they reach your intake tract, protecting your engine from buildup in the intake tube and manifold runners while preventing octane dilution.

Constructed from solid billet aluminum with a clear anodized finish, this separator features a multi-stage filtration system. It uses a fine stainless steel mesh screen to trap initial vapors, which then pass through a 1/2-inch thick, 1/16-inch aluminum honeycomb filter. Once the droplets become heavy enough, they fall into the 3 oz collection tank. The tank features a knurled base for easy, tool-free removal during maintenance and is sealed with an O-ring to ensure leak-free operation.

• Material: CNC-milled solid billet aluminum
• Finish: Clear Anodized
• Capacity: 3 oz fluid tank
• Filtration: Stainless steel mesh and 1/16" aluminum honeycomb
• Installation: Plug-and-play quick-connect PCV fittings
• MPN: 3073P-C

Manufacturer recommends draining the tank every 2,000 to 3,000 miles to maintain peak efficiency.

Fits 2021-2024 Ram 1500 TRX (6.2L).

The J&L 3.0 Oil Separator protects your supercharged 6.2L engine by intercepting oil vapors before they reach the intake manifold. During normal operation, crankcase pressure is vented back into the intake track, carrying oil mist that can coat intake runners and dilute your fuel's octane. This is especially critical in forced-induction applications where increased crankcase pressures accelerate vapor accumulation.

Milled from solid billet aluminum, this separator features a multistage filtration system. A stainless steel fine mesh screen traps initial vapors, which then pass through a 1/2-inch thick, 1/16-inch aluminum honeycomb filter to condense into larger droplets. The clear anodized tank holds 3 oz of fluid and features a knurled base for easy removal and draining.

• Solid billet aluminum construction with a clear anodized finish
• 3 oz tank capacity with an O-ring seal to prevent leaks
• Multistage filtration: Stainless steel mesh and aluminum honeycomb
• Includes quick-connect PCV fittings for a straightforward installation
• Recommended drain interval: Every 2,000-3,000 miles
• Manufacturer Part Number: 3071P-C

Fits 2018-2025 Jeep Wrangler and 2020-2025 Jeep Gladiator models equipped with the 3.6L engine.

Protect your Pentastar engine from the performance-robbing effects of oil blow-by. During the process of venting crankcase pressure, oil vapors can accumulate in your intake tube and manifold runners, leading to carbon buildup and reduced fuel octane levels. The J&L Oil Separator 3.0 intercepts these vapors, ensuring only clean air passes back into your intake system.

Engineered for durability and ease of maintenance, this unit is CNC-milled from solid billet aluminum and features a clear anodized finish. The tank utilizes a multistage filtration system, including a fine mesh stainless steel screen and a 1/2-inch thick, 1/16-inch aluminum honeycomb filter to trap even the finest oil particles. A knurled tank base allows for easy removal during service, and the included O-ring seal ensures a leak-free fit.

• Construction: Solid billet aluminum with clear anodized finish
• Filtration: Stainless steel mesh and 1/16-inch aluminum honeycomb
• Capacity: 3 oz fluid capacity
• Installation: Factory-style quick-connect PCV fittings for a plug-and-play setup
• Maintenance: Recommended drain interval of every 2,000–3,000 miles
• Manufacturer Part Number: 3069D-C

Fits select 2018-2025 Jeep Wrangler (JL) and Gladiator (JT) models (3.6L).

Protect your engine's intake tract from oil blow-by with the J&L 3.0 Oil Separator. During crankcase pressure venting, oil vapors can accumulate in the intake tube and manifold, potentially diluting your fuel and lowering effective octane levels. This oil separator intercepts those vapors, collecting them before they can coat internal components or affect combustion.

Milled from solid billet aluminum with a black anodized finish, this separator features a multi-stage filtration system. Vapors first pass through a fine mesh stainless steel screen to trap initial droplets, then move through a 1/2-inch thick, 1/16-inch aluminum honeycomb filter to consolidate remaining particles. The knurled tank base allows for easy tool-free removal for draining, while the integrated O-ring ensures a leak-free seal.

• Manufacturer Part Number: 3069D-B
• Construction: CNC-machined solid billet aluminum
• Finish: Black Anodized
• Capacity: 3 oz fluid reservoir
• Filtration: Stainless steel mesh and aluminum honeycomb
• Installation: Plug-and-play with factory-style quick-connect PCV fittings
• Maintenance: Recommended drain interval of 2,000–3,000 miles

Fits select 2011-2026 Dodge Durango and 2011-2021 Jeep Grand Cherokee models equipped with the 5.7L engine. This J&L Oil Separator 3.0 (MPN: 3066P-C) provides essential protection for your Hemi intake system.

During normal operation, crankcase pressure is vented back through the intake track. This process often introduces oil vapors into the intake tube and manifold runners, which can coat internal components and effectively lower your fuel's octane rating. The J&L 3.0 Oil Separator intercepts these vapors using a sophisticated multi-stage filtration system. Vapors first pass through a fine mesh stainless steel screen, then through a 1/2-inch thick, 1/16-inch aluminum honeycomb filter. This causes the oil to coalesce into heavier droplets that fall into the 3oz reservoir, allowing only clean air to reach the intake.

Milled from solid billet aluminum, this unit features a clear anodized finish for durability and a knurled tank base that allows for easy removal and draining. For optimal performance, the reservoir should be drained every 2,000 to 3,000 miles.

• Construction: CNC-milled solid billet aluminum
• Filtration: Stainless steel mesh and 1/16" aluminum honeycomb
• Capacity: 3oz fluid reservoir
• Sealing: O-ring sealed base to prevent leaks
• Finish: Clear anodized
• Part Number: 3066P-C

Fits select 2011-2024 Chrysler 300, Dodge Challenger, Dodge Charger, Dodge Durango, and Jeep Grand Cherokee (6.4L).

Protect your 6.4L Hemi from the performance-robbing effects of oil blow-by with the J&L 3.0 Oil Separator. During the PCV process, oil vapors are vented into the intake track where they can accumulate in the manifold runners and dilute fuel octane. This passenger-side separator intercepts those vapors, using a multi-stage filtration system to ensure only clean air enters your engine.

Milled from solid billet aluminum, this separator features a fine stainless steel mesh screen to trap initial vapors and a secondary 1/2-inch thick, 1/16-inch aluminum honeycomb filter to condense smaller droplets. The 3oz tank is designed with a knurled base for easy removal and draining, and it is sealed with an O-ring to prevent vacuum leaks.

• Solid billet aluminum construction with a clear anodized finish
• 3oz fluid capacity for extended intervals between draining
• Multi-stage filtration: stainless steel mesh and 1/16-inch aluminum honeycomb
• Knurled tank base for easy, tool-free maintenance
• Includes high-quality hoses and mounting hardware
• Manufacturer Part Number: 3063P-C

Fits select 2011-2024 Dodge Charger, Challenger, Durango, Chrysler 300, and Jeep Grand Cherokee models (6.4L).

Protect your engine's intake tract from performance-robbing oil vapor with the J&L Oil Separator 3.0. During normal operation, crankcase pressure is vented back into the intake, carrying oil vapors that coat intake runners, valves, and even dilute your fuel's octane level. This passenger-side catch can intercepts those vapors, ensuring only clean air reaches the combustion chamber.

Engineered for efficiency, this unit features a multi-stage filtration system. It uses a fine mesh stainless steel screen to trap initial vapors, followed by a 1/2" thick, 1/16" aluminum honeycomb filter. Once the droplets grow heavy enough, they fall into the 3 oz reservoir. The tank features a knurled base for easy, tool-free removal during maintenance and an O-ring seal to ensure a leak-free vacuum.

• Manufacturer Part Number: 3063P-B
• Construction: Solid billet aluminum
• Finish: Black Anodized
• Capacity: 3 oz
• Filtration: Stainless steel mesh and aluminum honeycomb
• Installation: Passenger side specific

Fits 2005-2010 Chrysler 300 C SRT8, Dodge Challenger/Charger/Magnum SRT8, and Jeep Grand Cherokee SRT8 (6.1L).

Protect your Hemi's intake tract from performance-robbing oil vapor with the J&L Oil Separator 3.0. During normal engine operation, crankcase pressure is vented back into the intake; this air contains oil vapors that can coat intake runners, gunk up valves, and effectively lower your fuel's octane level. This passenger-side catch can intercepts those vapors, ensuring only clean air reaches the combustion chamber.

Engineered for durability and efficiency, this separator is milled from solid billet aluminum and features a multi-stage filtration system. Vapors first pass through a fine stainless steel mesh screen, then through a 1/2-inch thick, 1/16-inch aluminum honeycomb filter. This process forces oil droplets to coalesce and fall into the 3oz reservoir. The knurled tank base allows for easy removal during service, while an integrated O-ring prevents vacuum leaks.

• Manufacturer Part Number: 3062P-C
• Construction: CNC-milled solid billet aluminum
• Finish: Black Anodized
• Capacity: 3oz fluid reservoir
• Filtration: Stainless steel mesh and 1/16" aluminum honeycomb
• Installation: Specific to passenger side mounting points

Fits select 2023-2026 Ford Bronco Sport, Escape, and Maverick, and Lincoln Corsair and Nautilus models equipped with the 2.0L EcoBoost engine.

During the combustion process, crankcase pressure is vented back through your intake tract. This pressure carries oil vapors that can accumulate in the intake tube and manifold runners, eventually diluting your fuel and lowering its effective octane level. The J&L Oil Separator 3.0 is engineered to intercept these vapors before they reach the intake, maintaining engine performance and reducing long-term carbon buildup.

Milled from solid billet aluminum, this rock-solid component features a multistage filtration system. Vapors are first caught by a fine mesh stainless steel screen before passing through a 1/2-inch thick, 1/16-inch aluminum honeycomb filter. This allows the oil to coalesce into larger droplets that fall into the 3oz reservoir, while clean air continues to the intake.

• Solid billet aluminum construction with a black anodized finish
• Multistage filtration: stainless steel mesh and 1/16-inch aluminum honeycomb
• 3oz reservoir capacity with a knurled base for easy removal and draining
• O-ring sealed to prevent vacuum leaks
• Designed for the PCV side of the engine
• Manufacturer Part Number: 3056D-B

Fits 1999-2004 Ford F-150 Lightning, SVT Lightning Heritage, and Harley-Davidson Edition models.

Protect your supercharged Ford engine from the performance-robbing effects of oil vapor with the J&L Oil Separator Co. 3.0. During crankcase pressure venting, oil mist often enters the intake tract, coating the manifold runners and diluting fuel octane levels. This 3.0 series separator is designed specifically for the driver side PCV system, providing a robust defense for your intake components.

• Advanced Filtration: Utilizes a multi-stage system featuring a fine mesh stainless steel screen and a 1/2" thick, 1/16" aluminum honeycomb filter to trap and condense fine oil vapors.
• Precision Engineering: Milled from solid billet aluminum with a knurled tank base for easy removal and an O-ring seal to prevent leaks.
• Maintenance: The 3 oz capacity tank should be drained every 2,000 to 3,000 miles to ensure clean air continues to pass through to the intake.

• Manufacturer Part Number: 3027D-B
• Material: Billet Aluminum
• Finish: Black Anodized
• Capacity: 3 oz
• Side: Driver Side

Fits 2010-2019 Ford Taurus SHO.

During the process of venting crankcase pressure back through your intake track, oil vapors can accumulate in your intake tube and manifold runners. In forced induction engines like the EcoBoost V6, these increased crankcase pressures often lead to oil diluting your fuel and lowering its effective octane level. The J&L Oil Separator 3.0 is designed to intercept these vapors, protecting your intake system and maintaining combustion efficiency.

Milled from solid billet aluminum, this separator features a multistage filtration system. Vapors first pass through a fine mesh stainless steel screen before entering a 1/2-inch thick, 1/16-inch aluminum honeycomb filter. This process forces oil droplets to coalesce and fall into the 3 oz reservoir. The knurled tank base allows for easy removal during maintenance, while the integrated O-ring seal ensures a leak-free performance.

• Manufacturer Part Number: 3023P-C
• Construction: Solid billet aluminum with a clear anodized finish
• Capacity: 3 oz tank with knurled base for easy draining
• Filtration: Stainless steel mesh and 1/16" aluminum honeycomb filter
• Installation: Includes quick-connect PCV fittings for a secure fit
• Maintenance: Recommended drain interval of every 2,000–3,000 miles

Fits 1999-2004 Ford Mustang SVT Cobra and 2003-2004 Mach 1 (Passenger Side).

Protect your engine's performance and longevity with the J&L 3.0 Oil Separator. During crankcase pressure venting, oil vapors often enter the intake tract, accumulating in the manifold runners and diluting fuel octane levels. This is particularly critical in high-performance and forced induction engines where increased crankcase pressures exacerbate the issue. The J&L separator captures these vapors before they can coat your intake components.

Engineered for durability and efficiency, this unit is milled from solid billet aluminum with a black anodized finish. It features a multi-stage filtration system, including a fine stainless steel mesh screen and a 1/2-inch thick, 1/16-inch aluminum honeycomb filter to trap the finest oil mists. The 3oz tank includes a knurled base for easy removal during service and an O-ring seal to ensure a leak-free fit.

• Precision-milled solid billet aluminum construction
• 3oz fluid capacity
• Multi-stage filtration: Stainless steel mesh and aluminum honeycomb
• Knurled tank base for easy tool-free draining
• Protective black anodized finish
• Includes O-ring seal to prevent vacuum leaks
• Manufacturer Part Number: 3018P-B

Fits 1999-2004 Ford Mustang SVT Cobra and Mach 1.

The J&L Oil Separator 3.0 provides a robust solution for managing crankcase pressure and preventing oil vapor from contaminating your intake tract. On performance Ford engines, oil vapors often accumulate in the intake tube and manifold runners, which can dilute fuel octane levels and lead to carbon buildup. This driver-side separator intercepts those vapors, protecting your engine's efficiency and performance.

Milled from solid billet aluminum, this unit features a sophisticated multistage filtration system. Vapors first pass through a fine mesh stainless steel screen to trap fine particulates before entering a 1/2-inch thick, 1/16-inch aluminum honeycomb filter. This allows oil droplets to coalesce and drop into the 3-ounce collection tank while allowing clean air to circulate back to the intake. The tank is designed with a knurled base for easy, tool-free removal during maintenance and utilizes an O-ring seal to prevent vacuum leaks.

• Precision-milled solid billet aluminum construction with a clear anodized finish
• 3oz tank capacity designed for a 2,000–3,000 mile drain interval
• Multistage filtration using stainless steel mesh and aluminum honeycomb elements
• Knurled tank base for easy drainage and maintenance
• Direct fit for driver-side PCV system
• Manufacturer Part Number: 3018D-C

Fits 2007-2014 Ford Mustang Shelby GT500 models.

The J&L 3.0 Oil Separator (3012D-B) is engineered to protect your supercharged engine from the performance-robbing effects of oil vapor accumulation. During the process of venting crankcase pressure back through the intake track, oil vapors can coat intake manifold runners and even dilute your fuel, effectively lowering its octane level. This is particularly critical in forced induction applications where increased crankcase pressures accelerate this buildup.

Milled from solid billet aluminum, this separator features a multi-stage filtration system to capture even the finest vapors. Contaminated air passes through a fine mesh stainless steel screen before entering a 1/2-inch thick, 1/16th-inch aluminum honeycomb filter. This causes the oil to coalesce and fall into the 3 oz reservoir while allowing clean air to continue to the intake. The knurled tank base ensures easy removal for draining every 2,000 to 3,000 miles.

• Precision milled solid billet aluminum construction with a black anodized finish
• 3 oz reservoir capacity with a leak-proof O-ring seal
• Multi-stage filtration: stainless steel mesh and aluminum honeycomb inserts
• Factory-style quick-connect PCV fittings for a simple, secure installation
• Prevents intake sludge and fuel octane dilution
• Specifically designed for the driver side PCV system

Fits 2002-2021 Subaru WRX and 2004-2021 Subaru WRX STI.

The PERRIN Air Oil Separator (AOS) is a critical upgrade for turbocharged Subaru engines, designed to tackle the common issue of oil vapor entering the intake system. In high-performance applications, blow-by gases carry oil mist into the intercooler and combustion chamber, which can lower the effective octane of your fuel and increase the risk of engine knock. This AOS intercepts those gases, separates the oil, and returns it to the crankcase, ensuring only clean air enters the intake tract.

This unit features a coolant-heated design that maintains the separator body at engine operating temperature. This is essential for preventing the buildup of water and oil emulsion (sludge) in the canister during cold weather operation. Built from CNC-machined aluminum with a durable red powder coat finish, this kit includes everything needed for a complete installation.

• Prevents oil buildup in the intercooler and intake manifold
• Coolant-heated canister prevents oil/water emulsion
• Returns separated oil directly to the crankcase
• CNC-machined aluminum construction
• Durable red powder coat finish
• Manufacturer Part Number: PSP-ENG-620RD

Fits 2002-2021 Subaru WRX and 2004-2021 Subaru WRX STI.

Protect your turbocharged boxer engine from the harmful effects of oil vapor with the PERRIN Air Oil Separator (AOS). This system solves the common issue of blow-by gases entering the intake tract, which can coat intercooler fins, reduce effective octane levels, and lead to power-robbing detonation. Unlike standard catch cans that require constant monitoring and manual draining, the PERRIN AOS features a maintenance-free design that separates oil from air and returns it directly to the engine crankcase.

• Engine Longevity: Prevents carbon buildup on intake valves and maintains combustion efficiency by keeping oil out of the air-fuel mixture.
• Heated Canister: Integrates into the vehicle's coolant system to heat the AOS body, preventing water vapor and oil from emulsifying into sludge during cold weather operation.
• Baffled Design: Utilizes a multi-stage separation process to ensure clean air is recycled into the intake while oil is recovered.
• Premium Construction: CNC machined from 6061 aluminum and finished in a durable black texture powder coat.
• MPN: PSP-ENG-620BK

The Radium Engineering Universal Air Oil Separator (AOS-R) is an essential component for high-performance engines, designed to effectively manage crankcase gases and prevent oil vapor from contaminating the intake tract. This AOS-R model utilizes a Vent-to-Atmosphere (VTA) design, where filtered gases are released out the top of the unit while captured oil is permitted to drain back into the engine block via gravity. This system ensures your engine maintains optimal combustion efficiency and prevents oil-induced octane degradation.

• Manufacturer Part Number: 20-0819
• System Type: Vent-to-Atmosphere (VTA) with top-mounted venting
• Oil Management: Integrated gravity drain returns oil directly to the crankcase
• Installation: Universal fitment for custom-built PCV or crankcase ventilation systems
• Application: Ideal for forced induction or high-revving naturally aspirated builds

Fits 2015-2020 Subaru WRX STI (Base, Launch Edition, Limited, Series.HyperBlue, and Type RA).

The Radium Engineering Air Oil Separator (AOS) Return Kit is a critical engine health upgrade for the late-model Subaru STI platform. This system intercepts oil vapor and combustion byproducts before they can enter the intake manifold, preventing intercooler contamination and reducing the risk of oil-induced detonation. Unlike sealed catch cans, this return-style system is designed to drain captured oil back into the crankcase, and the canister is fully serviceable for long-term maintenance.

• Full kit includes all necessary hoses, brackets, and hardware for a complete installation.
• Serviceable canister design allows for easy internal inspection and cleaning.
• Helps maintain fuel octane levels by reducing oil ingestion into the combustion chamber.
• Keeps the intake tract and intercooler free of oil sludge buildup.
• Manufacturer Part Number: 20-0607

Fits 2013-2017 Subaru BRZ, Scion FR-S, and Toyota 86.

The Radium Engineering Air Oil Separator (AOS) Return Kit (MPN: 20-0351) is a specialized upgrade for the FA20 engine's crankcase ventilation system. While standard catch cans require periodic manual emptying, this return kit allows collected oil to drain back directly into the oil pan. This ensures the AOS remains maintenance-free while keeping the intake tract free of oil vapor and moisture contamination.

By preventing oil blow-by from entering the induction system, this kit helps maintain octane levels and reduces the risk of carbon buildup on the intake valves. The result is a cleaner-running engine with more consistent performance during high-load driving or track conditions.

• Specifically engineered for the Gen 1 ZN6/ZC6 chassis
• Integrates with Radium AOS to enable automatic oil drainage back to the pan
• Maintains cleaner intake air for improved combustion stability
• Includes necessary fittings and plumbing for a secure, bolt-in installation
• Manufacturer Part Number: 20-0351

Fits 2015-2017 Subaru WRX Base, Limited, and Premium models.

The Radium Engineering Air Oil Separator (AOS) kit is an essential upgrade for the 2015-2017 Subaru WRX, specifically designed to manage crankcase ventilation and protect the FA20DIT engine. This kit intercepts oil vapor and moisture before they can enter the intake manifold, preventing the carbon buildup on intake valves that commonly plagues direct-injection engines. By maintaining a cleaner intake tract, this AOS helps preserve fuel octane ratings and prevents performance-robbing detonation.

This system features a CNC-machined, baffled canister that provides superior oil-air separation compared to the factory PCV setup. The kit is engineered for a clean installation, mounting to existing factory points and including all necessary oil-resistant hoses and application-specific hardware. Unlike a standard catch can, this AOS returns collected oil back to the crankcase, making it a low-maintenance solution for both street and track use.

• Prevents oil accumulation in the intercooler and intake tract
• Large-capacity baffled canister for efficient separation
• Integrated mounting solution for 2015-2017 WRX chassis
• Includes Radium Engineering component 20-0255
• Maintains engine efficiency and reduces carbon deposits
• Manufacturer Part Number: 20-0258-00

The Radium Engineering Universal Air Oil Separator (AOS) is a vital solution for maintaining engine longevity and performance by preventing crankcase oil vapors from contaminating the intake tract. This kit intercepts oil and moisture before they can coat intake valves, intercooler cores, and sensors, ensuring cleaner inlet air and more consistent combustion. Designed as a closed system, it vents filtered air back into the engine induction system to help lower hydrocarbon emissions while keeping the engine bay free of oil mist.

• Protects the induction system from oil coating and sludge buildup
• Closed-loop design vents back to the intake for a cleaner engine cycle
• Universal configuration allows for custom installation in various engine bays
• Helps maintain consistent octane levels by reducing oil vapor ingestion
• Manufacturer Part Number: 20-0219

Because this is a universal kit, it provides a flexible solution for custom plumbing and mounting in engine bays where vehicle-specific bolt-on kits are not available.

Fits 2002-2021 Subaru WRX and 2004-2021 Subaru WRX STI.

The PERRIN Air Oil Separator (AOS) FMIC Mounting Bracket is a specialized hardware solution designed for vehicles equipped with a front mount intercooler (FMIC). In many FMIC applications, standard AOS mounting locations are occupied by intercooler piping; this bracket provides a dedicated, secure mounting point to ensure your AOS remains properly positioned for optimal oil-vapor separation.

• Specifically engineered for use with Front Mount Intercooler setups
• Maintains proper AOS orientation for effective crankcase ventilation
• Constructed for durability and resistance to engine bay heat
• Direct fitment for the chassis of 02-21 WRX and 04-21 STI models
• Manufacturer Part Number: PSP-ENG-625

Fits Subaru BRZ, Scion FR-S, Toyota 86, and Toyota GR86.

The PERRIN Air Oil Separator (AOS) is an essential engine safety component designed to prevent oil vapor from entering the intake tract. For the FA20 and FA24 boxer engines, oil blow-by can lead to significant carbon buildup on intake valves and reduced octane stability, which increases the risk of engine knock. This AOS captures oil mist from the crankcase ventilation system and returns it to the oil pan, ensuring only clean air reaches your cylinders.

• Prevents oil vapor from coating the intake manifold and valves
• Heated coolant jacket prevents water condensation and sludge buildup in cold climates
• Maintenance-free design returns captured oil directly to the crankcase
• CNC machined from aluminum with a textured red powder-coated finish
• Complete kit includes application-specific mounting brackets and hoses
• Manufacturer Part Number: PSP-ENG-624RD

Fits 2013-2023 Subaru BRZ, Scion FR-S, and Toyota 86/GR86. The PERRIN Air Oil Separator (AOS) is an essential upgrade for FA20 and FA24 engines, engineered to solve the inherent issue of oil vapor entering the intake tract. By capturing oil mist from the crankcase and PCV system and returning it to the oil pan, this unit maintains intake tract cleanliness, prevents carbon buildup on valves, and reduces the risk of octane dilution and engine knock.

Unlike standard catch cans that require periodic manual draining, the PERRIN AOS features a maintenance-free, return-to-crankcase design. Its large-capacity canister provides ample volume for air-oil separation even under high-G cornering or high-boost conditions. The CNC-machined aluminum construction and durable black powder coat finish ensure long-term reliability in the harsh engine bay environment.

• Prevents oil vapor from entering the intake system and intercooler
• Reduces carbon buildup and maintains effective fuel octane levels
• Maintenance-free design returns oil directly to the engine crankcase
• CNC-machined from 6061-T6 aluminum with a textured black finish
• Includes all necessary mounting brackets, hoses, and hardware for a complete installation
• Manufacturer Part Number: PSP-ENG-624BK

Fits 2019-2025 Subaru Ascent and 2020-2025 Subaru Outback XT and Legacy XT (2.4L Turbo).

The PERRIN Air Oil Separator (AOS) is a critical engine health upgrade for the Subaru FA24 platform, engineered to intercept and remove oil vapors from the crankcase ventilation system before they enter the intake tract. By preventing oil blow-by from coating the intercooler and intake valves, this AOS reduces the risk of carbon buildup and helps prevent engine knock or detonation caused by oil-diluted fuel mixtures.

• Red powder-coated finish for corrosion resistance and engine bay styling
• Maintains cleaner intake air for more consistent combustion and performance
• Reduces maintenance by slowing carbon deposit accumulation on intake valves
• Designed specifically for the FA24 2.4L turbocharged engine layout
• Includes all necessary mounting hardware and hoses for installation
• Manufacturer Part Number: PSP-ENG-623RD

Fits 2022-2026 Subaru WRX models.

Protect your FA24 engine from the harmful effects of oil blow-by with the PERRIN Air Oil Separator (AOS). In turbocharged Boxer engines, oil mist and crankcase vapors frequently enter the intake tract, coating the intercooler and causing significant carbon buildup on the intake valves. The PERRIN AOS intercepts these vapors, using a multi-stage baffle system to separate oil from the air, returning the liquid oil to the crankcase while venting clean air back into the intake system.

• Prevents oil accumulation in the intercooler and intake manifold for consistent performance
• Reduces the risk of oil-induced engine knock and detonation
• Returns trapped oil directly to the oil pan to help maintain oil levels between changes
• Precision-machined aluminum construction with a durable red powder-coated finish
• Complete kit includes all necessary vehicle-specific mounting hardware and hoses
• Manufacturer Part Number: PSP-ENG-622RD

Fits 2022-2026 Subaru WRX.

The PERRIN Air Oil Separator (AOS) is an essential upgrade for the Subaru FA24 engine, designed to intercept oil vapor and moisture blow-by from the crankcase ventilation system before it reaches the intake tract. By preventing oil from coating the intercooler cores and intake valves, this system maintains cooling efficiency and helps prevent engine-damaging pre-detonation (knock) caused by lowered effective octane levels.

This AOS features a high-capacity canister that effectively separates oil from the air stream, returning the collected oil to the crankcase to maintain consistent lubricant levels. Finished in a durable black powder coat, it provides a clean, professional look under the hood while offering long-term corrosion resistance.

• Prevents oil ingestion into the intake manifold and intercooler
• Reduces carbon buildup on intake valves
• Large canister design for maximum air-oil separation efficiency
• Complete kit includes application-specific hoses and mounting hardware
• Finish: Black Powder Coat
• Manufacturer Part Number: PSP-ENG-622BK

Fits 2024-2025 Ford Mustang GT, GT Premium, Dark Horse, and Dark Horse Premium models.

Protect your engine and intake tract from performance-robbing blow-by with the K&N Air Oil Separator. This high-capacity reservoir captures oil vapors before they can enter the intake system, helping to prevent power loss and long-term engine damage. Designed as a direct-fit solution, it replaces the factory crankcase line with an engineered system that can be mounted in a convenient, accessible location in your engine bay.

Installation is straightforward, typically taking about 30 minutes with basic hand tools. The system utilizes factory-style quick-connect hose fittings for a secure, snap-on fit. Maintenance is equally simple; the reservoir can be checked and emptied without the need for additional tools.

• Defends intake components from oil coating and carbon buildup
• High-capacity reservoir requires less frequent emptying
• Quick and easy installation using factory-style hose connections
• Tool-free reservoir maintenance
• Replaces factory crankcase line (81-0833)
• Back by the K&N No-Hassle Lifetime Limited Warranty

Fits 2015-2023 Ford Mustang EcoBoost and EcoBoost Premium models equipped with the 2.3L engine.

Protect your engine's performance and intake tract with the K&N Air Oil Separator. This high-capacity reservoir captures oil mist and vapors (blowby) from the crankcase before they enter the intake system, helping to prevent carbon buildup, power loss, and potential engine damage. Designed for efficiency and ease of use, the reservoir can be checked and emptied without the use of tools.

Installation is straightforward and typically takes about 30 minutes using basic hand tools. The kit features factory-style quick-connect hose fittings that snap directly into place, replacing the factory crankcase line for a secure and clean fitment within the engine bay. Each unit is precision-engineered for the S550 chassis to ensure optimal mounting and durability.

• Manufacturer Part Number: 81-0830
• Installation Time: Approximately 30 minutes
• Connector Type: Factory-style snap-on hose connections
• Maintenance: Tool-free reservoir drainage
• Warranty: No-Hassle Lifetime Limited Warranty