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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Results 1 - 25 of 179

Improved Racing Products Oil Catch Cans HSC-6000

CCS oil catch can drain plug

Part Number: IRP-HSC-6000

Not Yet Reviewed

Estimated Ship Date: Oct 15, 2025 if ordered today

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Estimated Ship Date: Oct 15, 2025 if ordered today

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

4.64 out of 5 stars ( 44 )

Estimated Ship Date: Today

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Improved Racing Products Oil Catch Cans HSC-6001

CCS oil catch can drain adapter, -6 ORB

Part Number: IRP-HSC-6001

Not Yet Reviewed

Estimated Ship Date: Oct 15, 2025 if ordered today

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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 )

Estimated Ship Date: Today

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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 ( 1 )

Estimated Ship Date: Today

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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 )

Estimated Ship Date: Today

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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 )

Estimated Ship Date: Today

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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 )

Estimated Ship Date: Today

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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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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 )

Estimated Ship Date: Today

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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 )

Estimated Ship Date: Today

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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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Moroso Breather Tanks 85753

Oil Catch Can, Aluminum, Black Powdercoat, Round, 3 1/8 in. Diameter, 11.50 in. Height, Mounting Bracket Included, Each

Part Number: MOR-85753

5.0 out of 5 stars ( 2 )

Estimated Ship Date: Today

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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 )

Estimated Ship Date: Today

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Trick Flow® PCV Air/Oil Separators TFS-51400850

PCV Air, Oil Separator Tank, Aluminum, Black Anodized, Universal, Each

Part Number: TFS-51400850

4.5 out of 5 stars ( 4 )

Estimated Ship Date: Today

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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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Moroso PCV Air/Oil Separators 85531

Oil Catch Cans, Air/Oil Separator Tank, Aluminum, Black Anodized, Large Body, Kit

Part Number: MOR-85531

4.5 out of 5 stars ( 2 )

Estimated Ship Date: Today

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Allstar Performance Breather Tanks ALL36109

Breather Tank, Round, Aluminum, Natural, 3 in. Diameter, 11.5 in. Tall, 3/8 NPT Bungs, Universal, Each

Part Number: AAF-ALL36109

4.77 out of 5 stars ( 30 )

Estimated Ship Date: Today

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Summit Racing™ Ultimate Oil Separators and Catch Cans SUM-300151

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

Part Number: SUM-300151

Not Yet Reviewed

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Dorman Oil Catch Can Kits 46110

Oil Catch Cans, Black Anodized, Aluminum, 3.5 oz Capacity, 4 in. Height, 2.38 in. Diameter, Hose Barb, Rubber Hose Included, Universal, Kit

Part Number: RNB-46110

5.0 out of 5 stars ( 1 )

Estimated Ship Date: Today

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Moroso Vacuum Pump Air/Oil Separators 85495

Air, Oil, Separator Tank, Round, Aluminum, Natural, Male Fittings, -12AN, Mounting Clamp, Kit

Part Number: MOR-85495

3.67 out of 5 stars ( 3 )

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Radium Engineering Catch Can Kits 200772

Air Oil Separator-Return Dual, PCV, Crankcase, 7 oz. Capacity, -6 AN, Billet Aluminum, Black, Honda, S2000, Kit

Part Number: RDM-200772

Not Yet Reviewed

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Trick Flow® PCV Air/Oil Separators TFS-K51400850

PCV Air, Oil Separator Tank, Aluminum, Black Anodized, Universal, Kit

Part Number: TFS-K51400850

5.0 out of 5 stars ( 3 )

Estimated Ship Date: Today

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Moroso Breather Tanks 85459

Oil Breather Tank, Cylindrical, 1 qt. Capacity, Aluminum, Natural, -10 AN Male Threads Inlet, Each

Part Number: MOR-85459

5.0 out of 5 stars ( 3 )

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Mishimoto Baffled Oil Catch Cans for 2016-2022 CAMARO - MMBCC-CAM8-16PBE

Oil Catch Can, Baffled, Round, Aluminum, Black Anodized, Black Silicone Hoses, Chevy, 6.2L, Kit

Part Number: MIO-MMBCCCAM816P

4.38 out of 5 stars ( 21 )

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