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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Moroso Breather Tanks 85406

Oil Breather Tank, Dry Sump Breather, 1 qt., Round, Polyethylene, Black, -6 AN Inlet, Universal, Each

Part Number: MOR-85406

4.0 out of 5 stars ( 5 )

Estimated Ship Date: Today

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Moroso Breather Tanks 85456

Oil Breather Tank, Aluminum, Natural, -6 AN Male Thread, Each

Part Number: MOR-85456

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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

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Radium Engineering Catch Can Kits for 2000-2005 S2000 - 20-0093-FL

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

Part Number: RDM-20-0093-FL

Not Yet Reviewed

Estimated Ship Date: Nov 21, 2025 if ordered today

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Estimated Ship Date: Nov 21, 2025 if ordered today

Radium Engineering Catch Can Kits for 2000-2005 S2000 - 20-0096-FL

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

Part Number: RDM-20-0096-FL

Not Yet Reviewed

Estimated Ship Date: Nov 20, 2025 if ordered today

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Estimated Ship Date: Nov 20, 2025 if ordered today

Fathouse Performance Mustang S550 Extreme Race Catch Cans for 2014-2023 MUSTANG - FP-S550-ERCC

S550 Extreme Race Catch Can

Part Number: FHF-FP-S550-ERCC

Not Yet Reviewed

Estimated Ship Date: Nov 26, 2025 if ordered today

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Estimated Ship Date: Nov 26, 2025 if ordered today

BBK Oil Separators for 2016-2024 CAMARO - 1930

Oil Separator, Direct Fit, Billet Aluminum, Clear Anodized, Includes Hoses and Fittings, Driver Side Mount, Chevy, Camaro, 6.2L V8, Kit

Part Number: BBK-1930

Not Yet Reviewed

Estimated Ship Date: Jan 30, 2026 if ordered today

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Estimated Ship Date: Jan 30, 2026 if ordered today

Mishimoto Baffled Oil Catch Cans for 2019-2020 M2, 2015-2018 M3, 2015-2020 M4 - MMBCC-F80-15CBE

Oil Catch Can, BMW F8X M3/M4 Baffled Oil Catch Can, 2015-2020

Part Number: MIO-BCCF8015CBE

Not Yet Reviewed

Estimated Ship Date: Nov 14, 2025 if ordered today

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Estimated Ship Date: Nov 14, 2025 if ordered today

Mishimoto Baffled Oil Catch Cans MMBCC-N54-06CBE2

Oil Catch Can, BMW N54 Baffled Oil Catch Can, CCV Side, 2006-2010

Part Number: MIO-BCCN5406CBE2

Not Yet Reviewed

Estimated Ship Date: Nov 14, 2025 if ordered today

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Estimated Ship Date: Nov 14, 2025 if ordered today

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 )

Estimated Ship Date: Today

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J&L Oil Separator Co. 3.0 Oil Separators for 2016-2024 CAMARO - 3081D-B

Oil Catch Can, CCS, Oil Separator, 7.0 oz., 2.90 in. Round, Aluminum, Black, -6AN Female O-Ring, Universal, Kit

Part Number: IRP-CCS-700

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Estimated Ship Date: Nov 25, 2025 if ordered today

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Estimated Ship Date: Nov 25, 2025 if ordered today

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