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Thermostat Housing and Water Necks

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Thermostat Housing and Water Necks

Thermostat housing, water neck, water outlet, coolant housing…they’re all names for the same thing. This component is where the upper radiator hose plugs...

Thermostat housing, water neck, water outlet, coolant housing…they’re all names for the same thing. This component is where the upper radiator hose plugs in, and it also contains your mechanical thermostat. Grab a stock replacement to replace a leaky or broken one, dress up your engine with a chrome or anodized finish, or use a 360° swiveling model for versatility on your custom cooling system.

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Our powerful search tools make it easy to find the right water neck from manufacturers like Meziere, Dorman, Mr. Gasket, Four Seasons, Trans-Dapt, ACDelco, and so many more.

Thermostat housing, water neck, water outlet, coolant housing…they’re all names for the same thing. This component is where the upper radiator hose plugs in, and it also contains your mechanical thermostat. Grab a stock replacement to replace a leaky or broken one, dress up your engine with a chrome or anodized finish, or use a 360° swiveling model for versatility on your custom cooling system.

Top Brands


Our powerful search tools make it easy to find the right water neck from manufacturers like Meziere, Dorman, Mr. Gasket, Four Seasons, Trans-Dapt, ACDelco, and so many more.

Individual Parts

Results 1 - 25 of 275

Thermostat Housing, Swivel, 90 Degree, Aluminum, Black Anodized, O-ring Sealing Style, Fits 1 1/2 in. Radiator Hose, Ford, Small Block Windsor, Each

Part Number: BSP-BLK90620

5.0 out of 5 stars ( 1 )

Estimated Ship Date: Today

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Estimated Ship Date: Today

Radiator Hose Connector, BMW, Each

Part Number: URO-008044

Not Yet Reviewed

Estimated Ship Date: Feb 17, 2026 if ordered today

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Estimated Ship Date: Feb 17, 2026 if ordered today

Thermostat Housings, Coolant Hose Flange Kit, Includes 3 Hoses, 1 Flange, 1 Gasket, 1 O-Ring, 1 Sensor, 1 Lock Pin, 1 Thermostat, Audi, 2.0L, Kit

Part Number: RIN-CHS0648

5.0 out of 5 stars ( 2 )

Estimated Ship Date: Today

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Coolant Hose Flange Kit, Thermostat Included, Sensor Included, Plastic, Black, Audi, Kit

Part Number: RIN-CHS0646

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

Thermostat Housings, Coolant Hose Flange Kit, Includes 2 Hoses, 1 Flange, 1 Seal, 1 O-Ring, 1 Sensor, 1 Lock Pin, 1 Thermostat, Volkswagen, Kit

Part Number: RIN-CHS0647

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

Thermostat Housings, Coolant Hose Flange Kit, Includes 1 Flange, Hardware, Plastic, Black, Freightliner, Mercedes-Benz, Kit

Part Number: RIN-CHS0777

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

Water Neck and Thermostat Housing, Swivel, Aluminum, Polished, 90 Degree, Chevy, Small, Big Block, Each

Part Number: DWR-32-15821

5.0 out of 5 stars ( 1 )

Estimated Ship Date: Today

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Water Neck and Thermostat Housing, Swivel, Aluminum, Black, 45 Degree, GM, LS, Each

Part Number: DWR-32-1761-BLK

2.0 out of 5 stars ( 1 )

Estimated Ship Date: Today

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Water Neck, O-Ring Style, Angled Towards Driver/Left Side, Chrome Plated, Chevy, Each

Part Number: DWR-32-9229

Not Yet Reviewed

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Radiator Coolant Hose Flange, Volkswagen, Each

Part Number: URO-010182

Not Yet Reviewed

Estimated Ship Date: Feb 17, 2026 if ordered today

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Estimated Ship Date: Feb 17, 2026 if ordered today

Radiator Coolant Hose Flange, Volkswagen, Each

Part Number: URO-000120

Not Yet Reviewed

Estimated Ship Date: Feb 17, 2026 if ordered today

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Estimated Ship Date: Feb 17, 2026 if ordered today

Radiator Coolant Hose Flange, Volkswagen, Each

Part Number: URO-008038

Not Yet Reviewed

Estimated Ship Date: Feb 17, 2026 if ordered today

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Estimated Ship Date: Feb 17, 2026 if ordered today

Radiator Coolant Hose Connector. 2002-2008 Mini

Part Number: URO-011239

Not Yet Reviewed

Estimated Ship Date: Feb 17, 2026 if ordered today

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Estimated Ship Date: Feb 17, 2026 if ordered today

Radiator Coolant Hose Connector. 1999-2008 Porsche

Part Number: URO-011697

Not Yet Reviewed

Estimated Ship Date: Feb 17, 2026 if ordered today

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Estimated Ship Date: Feb 17, 2026 if ordered today

Radiator Coolant Hose Flange, Volkswagen, Audi, Each

Part Number: URO-010952

Not Yet Reviewed

Estimated Ship Date: Feb 17, 2026 if ordered today

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Estimated Ship Date: Feb 17, 2026 if ordered today

Radiator Coolant Hose Flange, Volkswagen, Each

Part Number: URO-008059

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Estimated Ship Date: Feb 17, 2026 if ordered today

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Radiator Coolant Hose Flange, Volkswagen, Each

Part Number: URO-000129

Not Yet Reviewed

Estimated Ship Date: Feb 17, 2026 if ordered today

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Estimated Ship Date: Feb 17, 2026 if ordered today

Radiator Coolant Hose Flange, Volkswagen, Each

Part Number: URO-000131

Not Yet Reviewed

Estimated Ship Date: Feb 17, 2026 if ordered today

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Estimated Ship Date: Feb 17, 2026 if ordered today

Radiator Coolant Hose Flange, Volkswagen, Each

Part Number: URO-000150

Not Yet Reviewed

Estimated Ship Date: Feb 17, 2026 if ordered today

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Estimated Ship Date: Feb 17, 2026 if ordered today

Radiator Coolant Hose Flange, Volkswagen, Audi, Each

Part Number: URO-000166

Not Yet Reviewed

Estimated Ship Date: Feb 17, 2026 if ordered today

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Estimated Ship Date: Feb 17, 2026 if ordered today

Radiator Coolant Hose Flange, Volkswagen, Each

Part Number: URO-000113

Not Yet Reviewed

Estimated Ship Date: Feb 17, 2026 if ordered today

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Radiator Coolant Hose Flange, Volkswagen, Audi, Each

Part Number: URO-000168

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Estimated Ship Date: Feb 17, 2026 if ordered today

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Radiator Coolant Hose Flange, Volkswagen, Each

Part Number: URO-000188

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Estimated Ship Date: Feb 17, 2026 if ordered today

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Radiator Coolant Hose Flange, Volkswagen, Audi, Each

Part Number: URO-000189

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Estimated Ship Date: Feb 17, 2026 if ordered today

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Radiator Coolant Hose Flange, Volkswagen, Audi, Each

Part Number: URO-009448

Not Yet Reviewed

Estimated Ship Date: Feb 17, 2026 if ordered today

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Estimated Ship Date: Feb 17, 2026 if ordered today

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