Moroso Cooling System Expansion Tanks

4.71 out of 5 stars 109 Customer Reviews

These expansion tanks are perfect for cars with low-mount radiators to provide a convenient filling location and to bleed off unwanted air. Versions are now available with rugged 6061-T6 billet aluminum filler necks welded to the tank to withstand the continuous removal and installation of the cap. They're 100 percent pressure- tested to eliminate leaks, and they accept a standard-size radiator cap (not included).

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Moroso Cooling System Expansion Tanks 63766

Coolant Expansion Tank, Fabricated Aluminum, Natural, 1 1/4 Quart, Each

Part Number: MOR-63766

4.85 out of 5 stars ( 27 )

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Moroso Cooling System Expansion Tanks for 2005-2013 CORVETTE - 63808

Coolant Expansion Tanks, Aluminum, Fabricated, Bolt-In, Natural, Chevrolet, Each

Part Number: MOR-63808

4.5 out of 5 stars ( 4 )

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Moroso Cooling System Expansion Tanks 63656

Overflow Tank, 1 qt., Round, Aluminum, Natural, 1/4 in. NPT Inlet/1/2 in. NPT Outlet, Universal, Each

Part Number: MOR-63656

5.0 out of 5 stars ( 1 )

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Moroso Cooling System Expansion Tanks 63773

Coolant Expansion Tank, Fabricated Aluminum, Natural, 1 1/4 Quart, With Sight Tube, Each

Part Number: MOR-63773

Not Yet Reviewed

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Moroso Cooling System Expansion Tanks for 1997-2004 CORVETTE - 63787

Coolant Expansion Tank, Recirculating, Bolt-in, Aluminum, Natural, Chevy, 5.7L LS, Each

Part Number: MOR-63787

5.0 out of 5 stars ( 3 )

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Moroso Cooling System Expansion Tanks for 2006-2015 MX-5 MIATA - 63779

Coolant Expansion Tanks, Aluminum, Fabricated, Bolt-In, Natural, Mazda, Each

Part Number: MOR-63779

5.0 out of 5 stars ( 4 )

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Moroso Cooling System Expansion Tanks 63952

Overflow Tank, Aluminum, Rectangular, Black Powdercoat, 1 1/4 in. Quart Capacity, Each

Part Number: MOR-63952

5.0 out of 5 stars ( 1 )

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Moroso Cooling System Expansion Tanks for 2005-2010 MUSTANG - 63768

Coolant Expansion Tank, Fabricated Aluminum, Direct Fit, Ford, Each

Part Number: MOR-63768

5.0 out of 5 stars ( 7 )

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Moroso Cooling System Expansion Tanks for 2011-2014 MUSTANG - 63783

Cooling System Expansion Tank, Aluminum, Natural, Ford, Each

Part Number: MOR-63783

4.83 out of 5 stars ( 6 )

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Moroso Cooling System Expansion Tanks 63774

Overflow Tank, Aluminum, Natural, 1 Quart, Cylindrical, Panel Mount, Each

Part Number: MOR-63774

3.0 out of 5 stars ( 1 )

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Moroso Cooling System Expansion Tanks for 1996-2004 MUSTANG - 63767

Coolant Expansion Tank, Fabricated Aluminum, Direct Fit, Ford, 4.6L, Each

Part Number: MOR-63767

5.0 out of 5 stars ( 11 )

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Moroso Cooling System Expansion Tanks 63851

TANK, COOLANT EXPANSION, BMW 1 SERIES, 3 SERIES, 05-13 335, Z4

Part Number: MOR-63851

Not Yet Reviewed

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Moroso Cooling System Expansion Tanks 63655

Expansion Tank, Stamped Filler Neck, 1 Qt Cap, Low Profile, 2 5/8" Deep

Part Number: MOR-63655

5.0 out of 5 stars ( 3 )

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Moroso Cooling System Expansion Tanks for 2013-2019 ATS, 2016-2021 CAMARO, 2014-2019 CTS - 63813

Coolant Expansion Tanks, Aluminum, Fabricated, Bolt-In, Natural, Chevrolet, Cadiliac, Each

Part Number: MOR-63813

Not Yet Reviewed

Estimated Ship Date: Aug 19, 2026 if ordered today

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Estimated Ship Date: Aug 19, 2026 if ordered today

Moroso Cooling System Expansion Tanks 63650

Overflow Tank, 1.5 qt., Round, Aluminum, Natural, 1/4 in. NPT Female Inlet/1/2 in. NPT Female Outlet, Each

Part Number: MOR-63650

4.67 out of 5 stars ( 3 )

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Moroso Cooling System Expansion Tanks for 2015-2023 MUSTANG - 63806

Coolant Tank, Expansion, Recirculating, Bolt-in, Aluminum, Natural, Ford, Each

Part Number: MOR-63806

5.0 out of 5 stars ( 4 )

Estimated Ship Date: Today

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Moroso Cooling System Expansion Tanks 63651

Overflow Tank, 1.5 qt., Round, Aluminum, Natural, 1/4 in. NPT Inlet/1/2 in. NPT Outlet, Universal, Each

Part Number: MOR-63651

5.0 out of 5 stars ( 2 )

Estimated Ship Date: Aug 19, 2026 if ordered today

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Estimated Ship Date: Aug 19, 2026 if ordered today

Moroso Cooling System Expansion Tanks for 2009-2018 GT-R - 63811

Coolant Expansion Tanks, Aluminum, Fabricated, Bolt-In, Natural, Nissan, Each

Part Number: MOR-63811

Not Yet Reviewed

Estimated Ship Date: Aug 19, 2026 if ordered today

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Estimated Ship Date: Aug 19, 2026 if ordered today

Moroso Cooling System Expansion Tanks for 1986-1993 MUSTANG - 63786

Coolant Expansion Tank, Vented, Recirculating, Bolt-in, Aluminum, Natural, Ford, Each

Part Number: MOR-63786

4.5 out of 5 stars ( 4 )

Estimated Ship Date: Aug 19, 2026 if ordered today

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Estimated Ship Date: Aug 19, 2026 if ordered today

Moroso Cooling System Expansion Tanks for 2015-2017 CHALLENGER, CHARGER - 63812

Coolant Expansion Tanks, Aluminum, Fabricated, Bolt-In, Natural, Chrysler, Dodge, V8, Each

Part Number: MOR-63812

4.0 out of 5 stars ( 1 )

Estimated Ship Date: Aug 18, 2026 if ordered today

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Estimated Ship Date: Aug 18, 2026 if ordered today

Moroso Cooling System Expansion Tanks 63793

Coolant Expansion Tanks, Aluminum, Fabricated, Bolt-In, Natural, Includes Radiator Cap, BMW, Each

Part Number: MOR-63793

Not Yet Reviewed

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Moroso Cooling System Expansion Tanks for 1990-1997 MIATA - 63780

Cooling System Expansion Tank; w/Billet Aluminum Cap; 90-97 Mazda Miata; Fabricated

Part Number: MOR-63780

1.0 out of 5 stars ( 1 )

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Moroso Cooling System Expansion Tanks for 2008-2013 M3 - 63850

Coolant Expansion Tank, Aluminum, Natural, BMW, Each

Part Number: MOR-63850

Not Yet Reviewed

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Moroso Cooling System Expansion Tanks 63497

Overflow Tank, Cooling, Vented, Recirculating, Aluminum, Natural, Dodge, Each

Part Number: MOR-63497

3.5 out of 5 stars ( 2 )

Estimated Ship Date: Today

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Moroso Cooling System Expansion Tanks for 1999-2005 MIATA - 63781

Coolant Tank, Expansion, Recirculating, Bolt-in, Aluminum, Natural, Mazda, 1.8L, Each

Part Number: MOR-63781

5.0 out of 5 stars ( 7 )

Estimated Ship Date: Aug 18, 2026 if ordered today

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Estimated Ship Date: Aug 18, 2026 if ordered today

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