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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 336

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: Monday 1/5/2026

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Estimated Ship Date: Monday 1/5/2026

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 )

Estimated Ship Date: Monday 1/5/2026

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Estimated Ship Date: Monday 1/5/2026

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: Monday 1/5/2026

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Estimated Ship Date: Monday 1/5/2026

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: Monday 1/5/2026

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Estimated Ship Date: Monday 1/5/2026

Air, Oil, Separator Tank, Aluminum, Polished, 2.875 in. Diameter, 4.5 in. Height, Chevy, Kit

Part Number: MOR-85516

4.67 out of 5 stars ( 9 )

Estimated Ship Date: Monday 1/5/2026

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Estimated Ship Date: Monday 1/5/2026

Air, Oil, Separator Tank, Round, Aluminum, Natural, Mounting Clamp, Kit

Part Number: MOR-85496

4.48 out of 5 stars ( 21 )

Estimated Ship Date: Monday 1/5/2026

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Estimated Ship Date: Monday 1/5/2026

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

Part Number: TFS-51400850

4.5 out of 5 stars ( 4 )

Estimated Ship Date: Monday 1/5/2026

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Estimated Ship Date: Monday 1/5/2026

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

Part Number: MOR-85495

3.67 out of 5 stars ( 3 )

Estimated Ship Date: Monday 1/5/2026

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Estimated Ship Date: Monday 1/5/2026

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

Part Number: TFS-K51400850

5.0 out of 5 stars ( 3 )

Estimated Ship Date: Monday 1/5/2026

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Estimated Ship Date: Monday 1/5/2026

Oil Catch Can, Harley-Davidson®, Milwaukee Eight, Black, Stock Air Cleaner, Screaming Eagle Air Cleaner, Kit

Part Number: MOR-85723

5.0 out of 5 stars ( 2 )

Estimated Ship Date: Monday 1/5/2026

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Estimated Ship Date: Monday 1/5/2026

Air, Oil, Separator Tank, Aluminum, Black Anodized, Cadillac, CTS-V, Kit

Part Number: MOR-85603

4.71 out of 5 stars ( 7 )

Estimated Ship Date: Monday 1/5/2026

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Estimated Ship Date: Monday 1/5/2026

Oil Catch Can, Air/Oil Separator, Billet Aluminum, Black Powdercoated, Subaru, WRX, Kit

Part Number: CBT-843615

Not Yet Reviewed

Estimated Ship Date: Monday 1/5/2026

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Estimated Ship Date: Monday 1/5/2026

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

Part Number: MOR-85477

4.89 out of 5 stars ( 9 )

Estimated Ship Date: Monday 1/5/2026

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Estimated Ship Date: Monday 1/5/2026

Separator Tank, PCV Air/Oil Separator, Round, Aluminum, Polished, Chevy, Kit

Part Number: MOR-85521

4.86 out of 5 stars ( 7 )

Estimated Ship Date: Monday 1/5/2026

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Estimated Ship Date: Monday 1/5/2026

Air, Oil, Separator Tank, Aluminum, Polished, 3.125 in. Diameter, 6 in. Height, Each

Part Number: MOR-85471

5.0 out of 5 stars ( 1 )

Estimated Ship Date: Monday 1/5/2026

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Estimated Ship Date: Monday 1/5/2026

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

Part Number: MOR-85472

4.7 out of 5 stars ( 30 )

Estimated Ship Date: Monday 1/5/2026

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Estimated Ship Date: Monday 1/5/2026

Separator Tank, PCV Air/Oil Separator, Round, Aluminum, Black Anodized, Clear Base, Small Body Separator Tank, Kit

Part Number: MOR-85683

5.0 out of 5 stars ( 2 )

Estimated Ship Date: Monday 1/5/2026

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Estimated Ship Date: Monday 1/5/2026

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 )

Estimated Ship Date: Monday 1/5/2026

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Estimated Ship Date: Monday 1/5/2026

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: Jan 23, 2026 if ordered today

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Estimated Ship Date: Jan 23, 2026 if ordered today

Air, Oil, Separator Tank, Aluminum, Black Anodized, 2.125 in. Diameter, 4.5 in. Height, Chevy, Kit

Part Number: MOR-85653

4.5 out of 5 stars ( 6 )

Estimated Ship Date: Jan 28, 2026 if ordered today

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Estimated Ship Date: Jan 28, 2026 if ordered today

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

Part Number: TFS-51400852

Not Yet Reviewed

Estimated Ship Date: Monday 1/5/2026

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Estimated Ship Date: Monday 1/5/2026

Oil Catch Can, Oil/Air Separator, Plastic, Left Side, Ford, Ecoboost, 2.3L, Kit

Part Number: FMS-M-6766-A23

Not Yet Reviewed

Estimated Ship Date: Monday 1/5/2026

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Estimated Ship Date: Monday 1/5/2026

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: Jan 28, 2026 if ordered today

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Estimated Ship Date: Jan 28, 2026 if ordered today

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

Part Number: TFS-K51400852

5.0 out of 5 stars ( 1 )

Estimated Ship Date: Monday 1/5/2026

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Estimated Ship Date: Monday 1/5/2026

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: Jan 26, 2026 if ordered today

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Estimated Ship Date: Jan 26, 2026 if ordered today

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