Oil Catch Cans & Breather Tanks

Oil catch cans and breather tanks look similar and do similar jobs, but they serve different purposes.

Oil Catch Cans

Normally, the PCV (positive crankcase ventilation)...

Oil catch cans and breather tanks look similar and do similar jobs, but they serve different purposes.

Oil Catch Cans

Normally, the PCV (positive crankcase ventilation) valve uses intake vacuum to relieve the pressure inside your crankcase, but that can result in oil mist and other blow-by contaminants building up on the valve and pistons, especially in direct-injection engines. An oil catch can (sometimes called an air/oil separator) is installed between the PCV valve and the intake, where it removes contaminants and allows only clean air to return to the intake manifold. Some have a reservoir that needs to be drained...

Oil catch cans and breather tanks look similar and do similar jobs, but they serve different purposes.

Oil Catch Cans

Breather Tanks

In forced induction and racing applications, the build-up of crankcase pressure can be much greater, so a breather tank is designed to vent that excess pressure into the atmosphere. They capture some blow-by with a catch can and air filter, and they may have an oil return. Importantly, breather tanks may not meet local emissions standards.

Top Brands

These devices are easy insurance for your high performance engine, and some builders use both a catch can and a breather tank. Summit Racing Equipment carries catch cans from trusted brands like Moroso, Mishimoto, Canton Racing, Ford Performance, JLT Performance, and many more.

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Summit Racing™ Breather Tanks SUM-300105

Breather Tank, Oil Control System, Bolt-In 16 oz. Polished Round Aluminum Tank with Filtered Breather, Valve Cover Breathers, Hose, Universal, Kit

Part Number: SUM-300105

4.66 out of 5 stars ( 47 )

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Summit Racing™ Ultimate Oil Separators and Catch Cans SUM-300150

Ultimate Catch Can Assembly, Billet Aluminum, Black, External Ventilated, Standard Capacity, Each

Part Number: SUM-300150

5.0 out of 5 stars ( 1 )

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Moroso PCV Air/Oil Separators 85474

Air, Oil, Separator Tank, Aluminum, Polished, 3 in. Diameter, 4 in. Height, Kit

Part Number: MOR-85474

4.76 out of 5 stars ( 46 )

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J&L Oil Separator Co. 3.0 Oil Separators 3084D-B

Oil Catch Can, Oil Separator, Round, Billet Aluminum, Black Anodized, 3/8 in. NPT Female Threads, Driver Side, Chevy, GMC, 4.8, 5.3, 6.0, 6.2L, Kit

Part Number: JLT-3084D-B

4.8 out of 5 stars ( 10 )

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Moroso Breather Tanks 85465

Oil Breather Tank, 1 qt., Round, Aluminum, Natural, Filtered Breather, Mounting Bracket, Petcock, Universal, Each

Part Number: MOR-85465

4.65 out of 5 stars ( 20 )

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Vibrant Performance Gen 3 Catch Cans 12761

Catch Can, Round, Aluminum, Black Anodized, 2-Port model, 4.40 in. Diameter, 8.25 in. Height, Each

Part Number: VPE-12761

Not Yet Reviewed

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Improved Racing CCS Oil Catch Can Kits CCS-GM-101

Improved Racing CCS Oil Catch Can Kits CCS-GM-101

Oil Catch Can, CCS, 7 oz., Oil Separator, Recirculating, Aluminum, Black, Round, Buick, Chevy, Cadillac, Pontiac, 5.3L, 5.7L, 6.0L, 6.2L, 7.0L, Kit

Part Number: IRP-CCS-GM-101

5.0 out of 5 stars ( 2 )

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Vibrant Performance Gen 3 Catch Cans 12760

Catch Can, Round, Aluminum, Black Anodized, 2-Port model, 4.40 in. Diameter, 4.93 in. Height, Each

Part Number: VPE-12760

5.0 out of 5 stars ( 1 )

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Summit Racing™ Breather Tanks SUM-300104

Breather Tank, Bolt-In, 16 oz. Capacity, Round, Aluminum, Polished, Vented with Filtered Breather, (2) 3/8" NPT Female Inlet Ports, Universal, Each

Part Number: SUM-300104

4.73 out of 5 stars ( 22 )

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K&N Oil Catch Cans 81-0805

Oil Catch Can, Round, Aluminum, Black, 6.0 oz. Capacity, Cadillac, Chevy, GMC, Kit

Part Number: KNN-81-0805

5.0 out of 5 stars ( 8 )

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Moroso Breather Tanks 85468

Oil Breather Tank, Aluminum, Natural, Dual -10 AN 180 Degrees Apart, Each

Part Number: MOR-85468

4.44 out of 5 stars ( 9 )

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Corsa Oil Catch Cans CC0001

Oil Catch Can, Round, 3 oz., Aluminum, Black Anodized, Chevy, GMC, Kit

Part Number: CSE-CC0001

5.0 out of 5 stars ( 8 )

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J&L Oil Separator Co. 3.0 Oil Separators for 2018-2021 EXPEDITION, 2011-2025 F-150 - 3016P-B

Oil Catch Can, Oil Separator, Round, Billet Aluminum, Black Anodized, 3/8 in. NPT Female Threads, Passenger Side, Ford, Kit

Part Number: JLT-3016P-B

4.64 out of 5 stars ( 61 )

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K&N Oil Catch Cans for 2018-2021 EXPEDITION, 2011-2024 F-150 - 81-0800

Oil Catch Can, Round, Aluminum, Black, 6.0 oz. Capacity, Ford, Kit

Part Number: KNN-81-0800

4.0 out of 5 stars ( 5 )

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J&L Oil Separator Co. 3.0 Oil Separators for 2010-2015 CAMARO - 3080P-B

Oil Catch Can, Oil Separator, Round, Billet Aluminum, Black Anodized, 3/8 in. NPT Female Threads, Passenger Side, Chevy, 6.2L, Kit

Part Number: JLT-3080P-B

4.92 out of 5 stars ( 12 )

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Moroso Breather Tanks 85751

Oil Catch Can, Aluminum, Black, Round, 3.13 in. Diameter, 11.50 in. Height, Each

Part Number: MOR-85751

5.0 out of 5 stars ( 2 )

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J&L Oil Separator Co. 3.0 Oil Separators 3086D-B

Oil Catch Can, Oil Separator, Round, Billet Aluminum, Black Anodized, 3/8 in. NPT Female Threads, Driver Side, Chevy, GMC, 5.3L, 6.2L, Kit

Part Number: JLT-3086D-B

4.82 out of 5 stars ( 17 )

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Moroso PCV Air/Oil Separators 85481

Air, Oil, Separator Tank, Aluminum, Polished, 3 in. Diameter, 4 in. Height, Chevy, GMC, Hummer, Kit

Part Number: MOR-85481

4.69 out of 5 stars ( 61 )

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Vibrant Performance Gen 3 Catch Cans 12766

Catch Can, Round, Aluminum, Black Anodized, 4-Port model, 4.40 in. Diameter, 8.25 in. Height, Each

Part Number: VPE-12766

Not Yet Reviewed

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Moroso PCV Air/Oil Separators 85497

Air, Oil, Separator Tank, Round, Aluminum, Black Anodized, Rubber Hose, Mounting Clamp, Kit

Part Number: MOR-85497

4.71 out of 5 stars ( 21 )

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Ford Performance Parts Coyote Oil-Air Separator Kits for 2011-2014 F-150, 2011-2020 MUSTANG - M-6766-A50

Separator Tank, Coyote Oil-Air, Plastic, Black, Male Quick-connect, Ford, F-150, Mustang GT/Boss 302/GT350, 5.0L, 5.2L, Each

Part Number: FMS-M-6766-A50

4.87 out of 5 stars ( 63 )

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Moroso Breather Tanks 85397

Oil Breather Tank, Compact, Round, 7 in. Tall, Aluminum, Black Anodized, Two -8 AN Male Fittings, Each

Part Number: MOR-85397

5.0 out of 5 stars ( 1 )

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Moroso Breather Tanks 85391

Oil Breather Tank, Aluminum, Natural, Dual -16 AN Female Thread, Dual Breathers, Each

Part Number: MOR-85391

3.0 out of 5 stars ( 1 )

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J&L Oil Separator Co. 3.0 Oil Separators 3060P-B

Oil Catch Can, Oil Separator, Round, Billet Aluminum, Black Anodized, 3/8 in. NPT Female Threads, Passenger Side, Dodge, Jeep, 6.2L, Kit

Part Number: JLT-3060P-B

4.56 out of 5 stars ( 16 )

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Summit Racing™ Ultimate Oil Separators and Catch Cans SUM-300152

Ultimate Catch Can Assembly, Billet Aluminum, Black, Recirculating Pressure Relief, Standard Capacity, Each

Part Number: SUM-300152

Not Yet Reviewed

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