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.

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.

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Results 1 - 22 of 22

CSR Intake Manifold Water Filler Necks CSR 913AN16BLK

Water Neck and Thermostat Housing, Radiator Cap Filler Neck Style, Swivel, with O-Ring Seal and Hardware, Billet Aluminum, Black Anodized, Chevy, Each

Part Number: CSI-913AN16BLK

5.0 out of 5 stars ( 1 )

Estimated Ship Date: Tomorrow

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CSR Intake Manifold Water Filler Necks CSR 99163

Water Neck, Billet Aluminum, Clear Anodized, 90 Degree, Universal, Each

Part Number: CSI-99163

4.0 out of 5 stars ( 1 )

Estimated Ship Date: Tomorrow

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CSR Intake Manifold Water Filler Necks CSR 99133

Manifold Expansion Filler, 3 in. x 12AN, Each

Part Number: CSI-99133

Not Yet Reviewed

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CSR Intake Manifold Water Filler Necks CSR 913C

Water Neck, Billet Aluminum, Clear Anodized, Swivel, 90 Degree, Chevy Big/Small Block, Each

Part Number: CSI-913C

5.0 out of 5 stars ( 1 )

Estimated Ship Date: Tomorrow

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CVR Intake Manifold Water Filler Necks TSH3CL

Water Neck, Radiator Cap Filler Neck Style, Billet Aluminum, Clear Anodized, Chevy, Each

Part Number: CVS-TSH3CL

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

CSR Intake Manifold Water Filler Necks CSR 99134

Water Neck, Billet Aluminum, Clear Anodized, 90 Degree, Universal, Each

Part Number: CSI-99134

Not Yet Reviewed

Estimated Ship Date: Tomorrow

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CSR Intake Manifold Water Filler Necks CSR 970C

Water Neck, Billet Aluminum, Clear Anodized, Straight Up, Chevy, Big/Small Block, Each

Part Number: CSI-970C

4.67 out of 5 stars ( 3 )

Estimated Ship Date: Tomorrow

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Trick Flow® Clevor Water Crossover Kits TFS-51600600

Trick Flow® Clevor Water Crossover Kits TFS-51600600

Thermostat Housing Crossover, Aluminum, Ford, 351W, Cleveland Heads, Kit

Part Number: TFS-51600600

4.0 out of 5 stars ( 4 )

Estimated Ship Date: Tomorrow

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JOES Racing Products Water Neck Outlets 36050

Water Neck, Aluminum, Black Anodized, Straight Up, -16 AN Male Threads, Chevrolet, Each

Part Number: JOE-36050

Not Yet Reviewed

Estimated Ship Date: Tomorrow

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AFCO Racing Aluminum Thermostat Housings 80312-15

Water Neck, Aluminum, Polished, 15 Degree, Chevy, Big/Small Block, Each

Part Number: AFC-80312-15

4.59 out of 5 stars ( 34 )

Estimated Ship Date: Tomorrow

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Weiand Aluminum Water Necks 6244

Water Neck, Aluminum, Polished, 90 Degree, Chevy, Big/Small Block, Each

Part Number: WND-6244

5.0 out of 5 stars ( 14 )

Estimated Ship Date: Tomorrow

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Weiand Aluminum Water Necks 6242

Water Neck, Aluminum, Polished, 45 Degree, Chevy, Big/Small Block, Each

Part Number: WND-6242

4.2 out of 5 stars ( 10 )

Estimated Ship Date: Tomorrow

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JOES Racing Products Water Neck Outlets 36060

Water Neck, Aluminum, Black Anodized, Straight Up, -20 AN Male Threads, Chevrolet, Each

Part Number: JOE-36060

Not Yet Reviewed

Estimated Ship Date: Tomorrow

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Weiand Aluminum Water Necks 6250

Water Neck, Aluminum, Polished, 15 Degree, Chevy, Big/Small Block, Each

Part Number: WND-6250

3.22 out of 5 stars ( 9 )

Estimated Ship Date: Tomorrow

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Weiand Aluminum Water Necks 6253

Water Neck, Aluminum, Black Ceramic, 90 Degree, Chevy, Big/Small Block, Each

Part Number: WND-6253

3.0 out of 5 stars ( 3 )

Estimated Ship Date: Tomorrow

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JOES Racing Products Water Neck Outlets 36000

Water Neck, Aluminum, Black Anodized, Straight Up, -16 AN Male Threads, 3/8 in. NPT Ports, Chevrolet, Each

Part Number: JOE-36000

Not Yet Reviewed

Estimated Ship Date: Tomorrow

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Classic Performance Water Necks CP6002

Water Neck, 0 degree, Aluminum, Polished, O-Ring Sealing Style, Chevy, Small Block, Each

Part Number: CLP-CP6002

Not Yet Reviewed

Estimated Ship Date: Tomorrow

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Weiand Aluminum Water Necks 6252

Water Neck, Aluminum, Black Powdercoated, 45 Degree, Chevy, Big/Small Block, Each

Part Number: WND-6252

4.0 out of 5 stars ( 4 )

Estimated Ship Date: Tomorrow

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Weiand Aluminum Water Necks 6255

Water Neck, Aluminum, Black Ceramic, 75 Degree, Chevy, Big/Small Block, Each

Part Number: WND-6255

1.5 out of 5 stars ( 2 )

Estimated Ship Date: Tomorrow

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Canton Racing Universal Water Outlet Fittings 80-100

Water Neck, Billet Aluminum, Natural, -16 AN Male, Straight Up, Chevy, Big/Small Block, Each

Part Number: CTR-80-100

Not Yet Reviewed

Estimated Ship Date: Dec 16, 2025 if ordered today

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Estimated Ship Date: Dec 16, 2025 if ordered today

Canton Racing Billet Aluminum Water Necks 80-059

THERMOSTAT HOUSING 4.6/5.4 FORD 90 DEG WATER NECK 1.5 IN HOSE - 2001 AND UP

Part Number: CTR-80-059

5.0 out of 5 stars ( 3 )

Estimated Ship Date: Tomorrow

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Offenhauser Thermostat Housings 6278

Water Neck, Cast Aluminum, Natural, Offset Adapter, Ford, V6, Each

Part Number: OFY-6278

4.25 out of 5 stars ( 4 )

Estimated Ship Date: Feb 11, 2026 if ordered today

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Estimated Ship Date: Feb 11, 2026 if ordered today

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