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Oil Catch Cans & Breather Tanks

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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


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 regularly, while others are plumbed to return the oil to the crankcase.

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.

Individual Parts

Results 1 - 25 of 278

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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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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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

4.5 out of 5 stars ( 2 )

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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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Breather Tank, 1 pt., Round, Polyethylene, Black, 3/8 in. Hose Barb Inlet, Universal, Each

Part Number: JZP-605-375-01

4.44 out of 5 stars ( 9 )

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Vent Tank, Kart/Jr. Dragster, Round, Aluminum, Natural, 4.000 in. Length, 1/4 in. Hose Barb Inlet, Each

Part Number: JOE-12318

4.13 out of 5 stars ( 8 )

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Oil Catch Can, Baffled, Round, 7.5 oz. Capacity, Aluminum, Black, 1/2 in. Hose Barb, Dodge, Ram, Kit

Part Number: MIO-BCCRAM09PBE2

Not Yet Reviewed

Estimated Ship Date: Jan 27, 2026 if ordered today

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Estimated Ship Date: Jan 27, 2026 if ordered today

Oil Catch Can, Baffled, Round, Aluminum, Black with Black Hoses, Chevy, Manual, Kit

Part Number: MIO-MMBCCCSS10P

5.0 out of 5 stars ( 1 )

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Air, Oil, Separator Tank, Aluminum, Polished, 3 in. Diameter, 4 in. Height, Rubber Hose, Clamp, Chevy, Kit

Part Number: MOR-85487

4.81 out of 5 stars ( 32 )

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Breather Tank, 1 pt., Round, Polyethylene, Black, 1/4 in. Hose Barb Inlet, Universal, Each

Part Number: JZP-605-325-01

5.0 out of 5 stars ( 2 )

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Oil Catch Cans, PCV Air/Oil Separators, Round, 7.5 oz. Capacity, Aluminum, Polished, 3/8 in. Hose Barb, Chevrolet, 6.2L Small Block Gen V, Kit

Part Number: MOR-85524

Not Yet Reviewed

Estimated Ship Date: Feb 9, 2026 if ordered today

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Estimated Ship Date: Feb 9, 2026 if ordered today

Oil Catch Can, Baffled, Round, 3 oz. Capacity, Aluminum, Black, 3/8 in. Hose Barb, for use on Honda®, Kit

Part Number: MIO-MMBCCCIV16P

Not Yet Reviewed

Estimated Ship Date: Jan 26, 2026 if ordered today

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Estimated Ship Date: Jan 26, 2026 if ordered today

Catch Can, Universal, 7 oz. Capacity, -6 AN Fittings, -6 AN Hose, Billet Aluminum, Black, Kit

Part Number: RDM-20-1806-FL

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Estimated Ship Date: Feb 2, 2026 if ordered today

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Estimated Ship Date: Feb 2, 2026 if ordered today

Breather Tank, 1 pt., Round, Polyethylene, Natural, 3/8 in. Hose Barb Inlet, Universal, Each

Part Number: JZP-605-375-05

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Catch Can, Universal, 7 oz. Capacity, -8 AN Fittings, -8 AN Hose, Billet Aluminum, Black, Kit

Part Number: RDM-20-1808-FL

Not Yet Reviewed

Estimated Ship Date: Jan 29, 2026 if ordered today

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Estimated Ship Date: Jan 29, 2026 if ordered today

Oil Catch Cans, PCV Air/Oil Separators, Round, 7.5 oz. Capacity, Aluminum, Natural, 3/8 in. Hose Barb, Chevrolet, GMC, 5.3L, 6.2L, Gen V, Kit

Part Number: MOR-85529

5.0 out of 5 stars ( 1 )

Estimated Ship Date: Feb 5, 2026 if ordered today

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Estimated Ship Date: Feb 5, 2026 if ordered today

Oil Catch Can, Baffled, Round, 3 oz. Capacity, Aluminum, Black, 3/8 in. Hose Barb, Jeep, Kit

Part Number: MIO-BCCWR612PBE2

5.0 out of 5 stars ( 1 )

Estimated Ship Date: Jan 27, 2026 if ordered today

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Estimated Ship Date: Jan 27, 2026 if ordered today

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

Part Number: MIO-MMBCC-C8-20P

Not Yet Reviewed

Estimated Ship Date: Jan 27, 2026 if ordered today

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Catch Can, Universal, 7 oz. Capacity, -10 AN Fittings, -10 AN Hose, Billet Aluminum, Black, Kit

Part Number: RDM-20-1810-FL

Not Yet Reviewed

Estimated Ship Date: Feb 2, 2026 if ordered today

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Estimated Ship Date: Feb 2, 2026 if ordered today

Air, Oil, Separator Tank, Round, Aluminum, Polished, 1/2 in. Hose Barb, Rubber Hose, Ford, 4.6L Modular, Kit

Part Number: MOR-85486

4.83 out of 5 stars ( 6 )

Estimated Ship Date: Feb 9, 2026 if ordered today

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Estimated Ship Date: Feb 9, 2026 if ordered today

Oil Catch Can, Baffled, Round, 7.5 oz. Capacity, Aluminum, Black, 1/2 in. Hose Barb, Ram, Kit

Part Number: MIO-BCCRAM19PBE

Not Yet Reviewed

Estimated Ship Date: Jan 26, 2026 if ordered today

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Estimated Ship Date: Jan 26, 2026 if ordered today

Oil Catch Can, Baffled, Round, Aluminum, Black Anodized, Black Silicone Hoses, Ford, Bronco, 2.3L, Kit

Part Number: MIO-MMBCCBR2723S

Not Yet Reviewed

Estimated Ship Date: Jan 27, 2026 if ordered today

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Estimated Ship Date: Jan 27, 2026 if ordered today

Oil Catch Can, Baffled, Round, Aluminum, Black Anodized, Black Silicone Hoses, Honda, Civic, 1.5L, Kit

Part Number: MIO-MMBCCCIV22P

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Estimated Ship Date: Jan 26, 2026 if ordered today

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Oil Catch Can, Baffled, Round, 3 oz. Capacity, Aluminum, Black, 1/2 in. Hose Barb, Ford, Kit

Part Number: MIO-BCCMUS815PBE

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Estimated Ship Date: Jan 26, 2026 if ordered today

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Oil Catch Can, Baffled, Round, 3 oz. Capacity, Aluminum, Black, 3/8 in. Hose Barb, for use on Honda®, Kit

Part Number: MIO-S2766

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