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 - 25 of 495

Weiand Remote Mount Water Neck Housings 7134P

Water Neck, Remote Mount, Aluminum, Natural, Universal, Each

Part Number: WND-7134P

Not Yet Reviewed

Estimated Ship Date: Monday 12/8/2025

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Estimated Ship Date: Monday 12/8/2025

Summit Racing™ Water Necks SME-2200-11

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

Part Number: SME-2200-11

3.9 out of 5 stars ( 10 )

Estimated Ship Date: Monday 12/8/2025

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Estimated Ship Date: Monday 12/8/2025

Moroso Remote Thermostat Housings 63425

Water Neck, Billet Aluminum, Black Anodized, Remote Mount, Each

Part Number: MOR-63425

5.0 out of 5 stars ( 1 )

Estimated Ship Date: Monday 12/8/2025

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Estimated Ship Date: Monday 12/8/2025

Allstar Performance Inline Thermostat Housings ALL31160

Water Neck, Inline Thermostat Housing, Remote Mount Style, Aluminum, Black Anodized, 1.500 in. Inlet/Outlet, Uses GM Style Thermostats, Each

Part Number: AAF-ALL31160

1.0 out of 5 stars ( 1 )

Estimated Ship Date: Jan 14, 2026 if ordered today

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Estimated Ship Date: Jan 14, 2026 if ordered today

Offenhauser Thermostat Control Bodies 5308

Water Neck, Aluminum, Natural, Remote Mount, Each

Part Number: OFY-5308

5.0 out of 5 stars ( 2 )

Estimated Ship Date: Feb 11, 2026 if ordered today

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Estimated Ship Date: Feb 11, 2026 if ordered today

Holley Thermostat Housing Assemblies 97-169

Water Neck Thermostat Housings, Replacement, Aluminum, 1.50 in. Outlet, O-ring Seal, with Thermostat, for LT/LS Mid-Mount Accessory Drive Only, Each

Part Number: HLY-97-169

Not Yet Reviewed

Estimated Ship Date: Monday 12/8/2025

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Estimated Ship Date: Monday 12/8/2025

Holley Thermostat Housing Assemblies for 2017-2023 CAMARO, 2015-2019 CORVETTE - 97-247

Water Necks and Thermostat Housings, Replacement, Thermostat/Housing Assembly, GM LT4, Aluminum, 1.50 in. OD, with Mid-Mount Accessory Drive, Each

Part Number: HLY-97-247

Not Yet Reviewed

Estimated Ship Date: Dec 29, 2025 if ordered today

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Estimated Ship Date: Dec 29, 2025 if ordered today

Edelbrock Water Necks 4817

Water Neck, Aluminum, Polished, O-Ring, 45 degree, Swivel, Chevrolet, Each

Part Number: EDL-4817

4.35 out of 5 stars ( 48 )

Estimated Ship Date: Monday 12/8/2025

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Estimated Ship Date: Monday 12/8/2025

Mr. Gasket Chrome Plated O-Ring Water Necks 2661

Water Neck, Aluminum, Chrome Plated, O-Ring, 45 Degree, Chevy, Big/Small Block, Each

Part Number: MRG-2661

4.5 out of 5 stars ( 36 )

Estimated Ship Date: Monday 12/8/2025

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Estimated Ship Date: Monday 12/8/2025

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: Monday 12/8/2025

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Estimated Ship Date: Monday 12/8/2025

March Performance Thermostat Housings BTH-212-08

Water Necks and Thermostat Housings, 90 degree, Swivel, Aluminum, Satin Black Anodized, 1.500 in. Outlet Size, Chevrolet, Small Block LS, Each

Part Number: MCH-BTH-212-08

Not Yet Reviewed

Estimated Ship Date: Monday 12/8/2025

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Estimated Ship Date: Monday 12/8/2025

Mr. Gasket Chrome Plated O-Ring Water Necks 2662

Water Neck, Steel, Chrome Plated, O-Ring, 45 Degree, Ford, 260-302/351W, Each

Part Number: MRG-2662

3.92 out of 5 stars ( 26 )

Estimated Ship Date: Monday 12/8/2025

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Estimated Ship Date: Monday 12/8/2025

Edelbrock Water Necks 48093

Water Neck, 15 Degree, O-Ring, Aluminum, Black, Chevrolet, 4.3, V6, SBC, BBC, Each

Part Number: EDL-48093

4.6 out of 5 stars ( 10 )

Estimated Ship Date: Monday 12/8/2025

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Estimated Ship Date: Monday 12/8/2025

March Performance Thermostat Housings BTH-212-05

Water Necks and Thermostat Housings, 90 degree, Swivel, Aluminum, Polished, 1.500 in. Outlet Size, Chevrolet, Small Block LS, Each

Part Number: MCH-BTH-212-05

3.67 out of 5 stars ( 3 )

Estimated Ship Date: Monday 12/8/2025

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Estimated Ship Date: Monday 12/8/2025

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: Monday 12/8/2025

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Estimated Ship Date: Monday 12/8/2025

Moroso Remote Thermostat Housings 63426

Water Neck, Billet Aluminum, Black Anodized, 0 Degree, Each

Part Number: MOR-63426

4.5 out of 5 stars ( 2 )

Estimated Ship Date: Monday 12/8/2025

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Estimated Ship Date: Monday 12/8/2025

Scott Drake Swivel Water Necks B-8592

Water Neck, Swivel, 45 degree, O-ring Sealing Style, Billet Aluminum, Polished, Ford, Small Block Windsor, Each

Part Number: SDK-B-8592

3.67 out of 5 stars ( 9 )

Estimated Ship Date: Monday 12/8/2025

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Estimated Ship Date: Monday 12/8/2025

Edelbrock Water Necks 4818

Water Neck, Aluminum, Polished, O-Ring, 90 degree, Swivel, Chevy, V8, V6, Each

Part Number: EDL-4818

4.29 out of 5 stars ( 24 )

Estimated Ship Date: Monday 12/8/2025

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Estimated Ship Date: Monday 12/8/2025

Edelbrock Water Necks 48143

Water Neck, 15 Degree, O-Ring, Steel, Black, Ford, Small Block, Each

Part Number: EDL-48143

3.62 out of 5 stars ( 13 )

Estimated Ship Date: Monday 12/8/2025

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Estimated Ship Date: Monday 12/8/2025

Vintage Air ProLine Swivel Water Necks 706002

Water Neck, 90 degree, Swivel, Aluminum, Polished, Gasket Sealing Style, Each

Part Number: VTA-706002

5.0 out of 5 stars ( 5 )

Estimated Ship Date: Monday 12/8/2025

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Estimated Ship Date: Monday 12/8/2025

Summit Racing Equipment® Remote Thermostat Housings SUM-3701250

THERMOSTAT HOUSING 1.250

Part Number: SUM-3701250

1.0 out of 5 stars ( 1 )

Estimated Ship Date: Monday 12/8/2025

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Estimated Ship Date: Monday 12/8/2025

March Performance Thermostat Housings BTH-202-08

Water Necks and Thermostat Housings, 90 degree, Swivel, Aluminum, Satin Black Anodized, 1.500 in. Outlet Size, Chevrolet, Small/Big Block, Each

Part Number: MCH-BTH-202-08

Not Yet Reviewed

Estimated Ship Date: Monday 12/8/2025

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Estimated Ship Date: Monday 12/8/2025

March Performance Thermostat Housings BTH-334-05

Water Neck, Thermostat Housing, Ford, Big Block 429-460, 351 Cleveland,351M & 400M, Billet, 75 Degree, Two Piece, O-Ring, Each, Polished

Part Number: MCH-BTH-334-05

Not Yet Reviewed

Estimated Ship Date: Monday 12/8/2025

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Estimated Ship Date: Monday 12/8/2025

March Performance Thermostat Housings BTH-302-05

Water Necks and Thermostat Housings, 90 degree, Swivel, Aluminum, Polished, 1.500 in. Outlet Size, Ford, 289/302/351 Small Block Windsor, Each

Part Number: MCH-BTH-302-05

Not Yet Reviewed

Estimated Ship Date: Monday 12/8/2025

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Estimated Ship Date: Monday 12/8/2025

Summit Racing Equipment® Remote Thermostat Housings SUM-3701500

THERMOSTAT HOUSING 1.500

Part Number: SUM-3701500

1.0 out of 5 stars ( 1 )

Estimated Ship Date: Monday 12/8/2025

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Estimated Ship Date: Monday 12/8/2025

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