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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 131

Breather Tank, Bolt-In, 16 oz., Round, Aluminum, Polished, Internal Baffle and Vented with Filtered Breather, (2) 3/8 in. NPT Female Inlet Ports, Each

Part Number: SUM-300104

4.73 out of 5 stars ( 22 )

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Breather Tank, Bolt-In, 16 oz., Round, Aluminum, Black, Internal Baffle and Vented with Filtered Breather, (2) 3/8 in. NPT Female Inlet Ports, Each

Part Number: SUM-300104B

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Oil Catch Cans, Parallel Port, Baffled, Aluminum, Powdercoated Black, 50 Micron, Bracket, Fittings, Hardware, Universal, Kit

Part Number: MIO-MMBCC-PPTWO

5.0 out of 5 stars ( 1 )

Estimated Ship Date: May 12, 2026 if ordered today

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Estimated Ship Date: May 12, 2026 if ordered today

CCS oil catch can, 3.5 fl. oz. (no drain port), replaces CCS-351

Part Number: IRP-CCS-350

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Estimated Ship Date: May 19, 2026 if ordered today

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Estimated Ship Date: May 19, 2026 if ordered today

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

Part Number: VPE-12761

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

Part Number: VPE-12766

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3-Port Universal XL Baffled Catch Can, Black

Part Number: MIO-S2852

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Estimated Ship Date: May 12, 2026 if ordered today

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Oil Catch Can, Mishimoto Compact Baffled Oil Catch Can, 2-Port Polished

Part Number: MIO-MMBCCCBTWOP

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Estimated Ship Date: May 12, 2026 if ordered today

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Oil Catch Can, Mishimoto Universal Compact Baffled Oil Catch Can Kit, 3-Port, Black

Part Number: MIO-BCCCBTHRBKH

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Estimated Ship Date: May 12, 2026 if ordered today

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Oil Catch Can, Mishimoto Universal Compact Baffled Oil Catch Can Kit, 2-Port, Red

Part Number: MIO-BCCCBTWORDH

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Estimated Ship Date: May 12, 2026 if ordered today

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Oil Catch Can, Mishimoto Universal Compact Baffled Oil Catch Can Kit, 3-Port, Polished

Part Number: MIO-MMBCCCBTHRPH

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Estimated Ship Date: May 12, 2026 if ordered today

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Oil Catch Can, Baffled, 2-port Design Can, Round, 3 oz. Capacity, Aluminum, Black, M16 x 1.5 Female Threads, Kit

Part Number: MIO-MMBCCCBTWOBK

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Oil Catch Can, Baffled, 3-port Design Can, Round, 3 oz. Capacity, Aluminum, Black, M16 x 1.5 Female Threads, Kit

Part Number: MIO-MMBCCCBTHRBK

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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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Oil Catch Can, Mishimoto Compact Baffled Oil Catch Can, 2-Port Red

Part Number: MIO-MMBCCCBTWORD

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Estimated Ship Date: May 12, 2026 if ordered today

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2-Port Universal XL Baffled Catch Can, Black

Part Number: MIO-S2853

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Estimated Ship Date: May 12, 2026 if ordered today

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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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Oil Catch Can, Mishimoto Compact Baffled Oil Catch Can, 3-Port, Polished

Part Number: MIO-MMBCCCBTHRP

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Estimated Ship Date: May 12, 2026 if ordered today

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Oil Catch Can, Mishimoto Compact Baffled Oil Catch Can, 3-Port, Red

Part Number: MIO-MMBCCCBTHRRD

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Oil Catch Can, Mishimoto Universal Compact Baffled Oil Catch Can Kit, 2-Port, Polished

Part Number: MIO-MMBCCCBTWOPH

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Estimated Ship Date: May 12, 2026 if ordered today

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Oil Catch Can, Mishimoto Universal Compact Baffled Oil Catch Can Kit, 2-Port, Black

Part Number: MIO-BCCCBTWOBKH

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Estimated Ship Date: May 12, 2026 if ordered today

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Oil Catch Can, Mishimoto Universal Compact Baffled Oil Catch Can Kit, 3-Port, Red

Part Number: MIO-BCCCBTHRRDH

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Estimated Ship Date: May 12, 2026 if ordered today

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Oil Catch Can, Round, 7 oz. Capacity, Aluminum, Black, -10 AN O-ring Female AN O-ring, Chevrolet, 5.7L LS, Kit

Part Number: RDM-20-0260-FL

5.0 out of 5 stars ( 1 )

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