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Cooling & Heating
Water Necks and Thermostat Housings
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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.

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.

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.

Showing In Stock Items. Show All 11 Items.

Individual Parts

Part Groups

Results 1 - 11 of 11

Mr. Gasket Water Necks 2670BK

Mr. Gasket Water Necks 2670BK

Mr. Gasket Water Necks 2670BK

Water Neck, Aluminum, Black Anodized, Swivel, 60 Degree, Chevrolet, LS, Each

Part Number: MRG-2670BK

4.25 out of 5 stars ( 8 )

Estimated Ship Date: Monday 3/23/2026 if shipped by air

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Estimated Ship Date: Monday 3/23/2026 if shipped by air

Mr. Gasket Water Necks 2557

Mr. Gasket Water Necks 2557

Mr. Gasket Water Necks 2557

Water Neck, Chrome Plated, 15 Degree, Chevy, Big/Small Block, Each

Part Number: MRG-2557

4.22 out of 5 stars ( 18 )

Estimated Ship Date: Monday 3/23/2026 if shipped by air

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Estimated Ship Date: Monday 3/23/2026 if shipped by air

Mr. Gasket Water Necks 2671NA

Mr. Gasket Water Necks 2671NA

Mr. Gasket Water Necks 2671NA

Water Neck, Aluminum, Polished, Straight Up, 1.50 in. Hose, GM, LS Engine, Each

Part Number: MRG-2671NA

3.5 out of 5 stars ( 8 )

Estimated Ship Date: Monday 3/23/2026 if shipped by air

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Estimated Ship Date: Monday 3/23/2026 if shipped by air

Mr. Gasket Water Necks 2670

Mr. Gasket Water Necks 2670

Mr. Gasket Water Necks 2670

Water Neck, Aluminum, Chrome Plated, Swivel, 60 Degree, Chevrolet, LS, Each

Part Number: MRG-2670

4.37 out of 5 stars ( 19 )

Estimated Ship Date: Monday 3/23/2026 if shipped by air

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Estimated Ship Date: Monday 3/23/2026 if shipped by air

Mr. Gasket Water Necks 9713

Mr. Gasket Water Necks 9713

Mr. Gasket Water Necks 9713

Water Neck, Steel, Chrome Plated, 90 Degree, Ford, Small Block Windsor, Each

Part Number: MRG-9713

2.61 out of 5 stars ( 28 )

Estimated Ship Date: Monday 3/23/2026 if shipped by air

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Estimated Ship Date: Monday 3/23/2026 if shipped by air

Mr. Gasket Water Necks 2664

Mr. Gasket Water Necks 2664

Mr. Gasket Water Necks 2664

Water Neck, Diecast Aluminum, Chrome Plated, 90 Degree, Ford, 429/460, Each

Part Number: MRG-2664

3.19 out of 5 stars ( 16 )

Estimated Ship Date: Monday 3/23/2026 if shipped by air

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Estimated Ship Date: Monday 3/23/2026 if shipped by air

Allstar Performance Aluminum Water Necks ALL30271

Allstar Performance Aluminum Water Necks ALL30271

Allstar Performance Aluminum Water Necks ALL30271

Water Necks and Thermostat Housings, Allstar Performance Aluminum Water Necks, 45 degree, Swivel, Aluminum, O-ring, Each

Part Number: AAF-ALL30271

4.0 out of 5 stars ( 1 )

Estimated Ship Date: Monday 3/23/2026 if shipped by air

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Estimated Ship Date: Monday 3/23/2026 if shipped by air

Mr. Gasket Water Necks 9714

Mr. Gasket Water Necks 9714

Mr. Gasket Water Necks 9714

Water Neck, Steel, Chrome Plated, 90 Degree, Oldsmobile, Big/Small Block, Each

Part Number: MRG-9714

4.25 out of 5 stars ( 4 )

Estimated Ship Date: Monday 3/23/2026 if shipped by air

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Estimated Ship Date: Monday 3/23/2026 if shipped by air

Mr. Gasket Water Necks 9141G

Mr. Gasket Water Necks 9141G

Mr. Gasket Water Necks 9141G

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

Part Number: MRG-9141G

4.7 out of 5 stars ( 10 )

Estimated Ship Date: Monday 3/23/2026 if shipped by air

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Estimated Ship Date: Monday 3/23/2026 if shipped by air

Mr. Gasket Water Necks 9845

Mr. Gasket Water Necks 9845

Mr. Gasket Water Necks 9845

Water Neck, Steel, Chrome Plated, O-Ring, Straight Up, Chevy, Big/Small Block, Each

Part Number: MRG-9845

4.67 out of 5 stars ( 6 )

Estimated Ship Date: Monday 3/23/2026 if shipped by air

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Estimated Ship Date: Monday 3/23/2026 if shipped by air

Mr. Gasket Water Necks 9142G

Mr. Gasket Water Necks 9142G

Mr. Gasket Water Necks 9142G

Water Neck, Aluminum, Chrome Plated, O-Ring, 90 Degree, Chevy, Big/Small Block, Each

Part Number: MRG-9142G

3.0 out of 5 stars ( 2 )

Estimated Ship Date: Monday 3/23/2026 if shipped by air

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Estimated Ship Date: Monday 3/23/2026 if shipped by air

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