$25 Off $250 / $50 Off $500, on Summit Racing Brand Products - Use Promo Code: BUILDIT

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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.

Individual Parts

Results 1 - 25 of 123

Housing, Thermostat, OEM Replacement, Dodge, Jeep, Ram, Each

Part Number: MOP-53021536AC

Not Yet Reviewed

Estimated Ship Date: Monday 11/24/2025

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Estimated Ship Date: Monday 11/24/2025

Housing, Thermostat, OEM Replacement, Chrysler, Each

Part Number: MOP-04781387AA

Not Yet Reviewed

Estimated Ship Date: Monday 11/24/2025

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Estimated Ship Date: Monday 11/24/2025

Housing, Thermostat, OEM Replacement, Chrysler, Dodge, Each

Part Number: MOP-68148113AA

Not Yet Reviewed

Estimated Ship Date: Monday 11/24/2025

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Estimated Ship Date: Monday 11/24/2025

Housing, Thermostat, OEM Replacement, Dodge, Jeep, Truck, Each

Part Number: MOP-53020887AD

Not Yet Reviewed

Estimated Ship Date: Monday 11/24/2025

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Estimated Ship Date: Monday 11/24/2025

Housing, Thermostat, OEM Replacement, Dodge, Each

Part Number: MOP-04792916AE

Not Yet Reviewed

Estimated Ship Date: Monday 11/24/2025

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Estimated Ship Date: Monday 11/24/2025

Water Necks and Thermostat Housings, Black Mopar Water Neck

Part Number: PGP-PRP-6728

Not Yet Reviewed

Estimated Ship Date: Monday 11/24/2025

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Estimated Ship Date: Monday 11/24/2025

Water Neck, Billet Aluminum, Black Anodized, Straight Up, Chevy, Mopar, Big Block, Small Block, Each

Part Number: MEZ-WN0916S

Not Yet Reviewed

Estimated Ship Date: Monday 11/24/2025

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Estimated Ship Date: Monday 11/24/2025

Water Neck, Zinc Alloy, Chrome, Mopar, Small Block/Big Block, 1978 and Older, Each

Part Number: TRD-4987

4.44 out of 5 stars ( 9 )

Estimated Ship Date: Monday 11/24/2025

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Estimated Ship Date: Monday 11/24/2025

Water Neck, Billet Aluminum, Black Anodized, Straight Up, Chevy, Mopar, Big Block, Small Block, Each

Part Number: MEZ-WN0912S

5.0 out of 5 stars ( 1 )

Estimated Ship Date: Monday 11/24/2025

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Estimated Ship Date: Monday 11/24/2025

Water Neck, Billet Aluminum, Natural, Straight Up, 1.50 in. Hose, Mopar, Kit

Part Number: CTR-80-025

4.67 out of 5 stars ( 6 )

Estimated Ship Date: Monday 11/24/2025

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Estimated Ship Date: Monday 11/24/2025

WATER NECK OUTLET, MOPAR/CHRYSLER Cast Alum 90°, all V6/V8/Slant6, as-cast

Part Number: PQX-5244081

Not Yet Reviewed

Estimated Ship Date: Monday 11/24/2025

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Estimated Ship Date: Monday 11/24/2025

Water Neck Base, Black Anodized, Mopar, Big Block, Each

Part Number: MEZ-WN0029S

Not Yet Reviewed

Estimated Ship Date: Monday 11/24/2025

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Estimated Ship Date: Monday 11/24/2025

Water Neck, Billet Aluminum, Blue Anodized, 15 Degree, Chevy, Mopar, Big Block, Small Block, Each

Part Number: MEZ-WN0021DB

Not Yet Reviewed

Estimated Ship Date: Monday 11/24/2025

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Estimated Ship Date: Monday 11/24/2025

CHR WATER NECK/MOPAR/CHEVY

Part Number: DWR-32-4987

Not Yet Reviewed

Estimated Ship Date: Dec 30, 2025 if ordered today

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Estimated Ship Date: Dec 30, 2025 if ordered today

WATER NECK OUTLET, MOPAR/CHRYSLER Cast Iron Vertical Fitting, all V6/V8/Slant6, chrome

Part Number: PQX-5244093

Not Yet Reviewed

Estimated Ship Date: Jan 26, 2026 if ordered today

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Estimated Ship Date: Jan 26, 2026 if ordered today

Thermostat Housing, with Thermostat, O-Ring, Mopar, 3.6L V6, Each

Part Number: CWA-5184977AE

Not Yet Reviewed

Estimated Ship Date: Feb 16, 2026 if ordered today

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Estimated Ship Date: Feb 16, 2026 if ordered today

Water Neck, Billet Aluminum, Polished, Straight Up, Chrysler, Dodge, Plymouth, Big Block, Small Block, Each

Part Number: BSP-90820

4.63 out of 5 stars ( 62 )

Estimated Ship Date: Monday 11/24/2025

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Estimated Ship Date: Monday 11/24/2025

Water Neck and Thermostat Housing, Stock, Steel, Natural, Chrysler, Dodge, Plymouth, Each

Part Number: RNB-902-3012

4.29 out of 5 stars ( 17 )

Estimated Ship Date: Monday 11/24/2025

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Estimated Ship Date: Monday 11/24/2025

Water Neck, 75 degree, Swivel, O-ring Sealing Style, Aluminum, Black Anodized, 1.5 in. Outlet, Chevy, Chrysler

Part Number: MEZ-WN1022S

4.5 out of 5 stars ( 2 )

Estimated Ship Date: Monday 11/24/2025

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Estimated Ship Date: Monday 11/24/2025

Thermostat Housing, Plastic, Black, Thermostat, Dodge, Jeep, 3.6L, Each

Part Number: CWA-5184651AF

5.0 out of 5 stars ( 1 )

Estimated Ship Date: Monday 11/24/2025

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Estimated Ship Date: Monday 11/24/2025

Water Neck, Billet Aluminum, Swivel, Black Anodized, 15 Degree, Chevy, Chrysler, Big/Small Block, Each

Part Number: MEZ-WN0020S

5.0 out of 5 stars ( 1 )

Estimated Ship Date: Monday 11/24/2025

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Estimated Ship Date: Monday 11/24/2025

Water Necks and Thermostat Housings, Gen III Hemi, Thermostat/Housing, 90 Degree, Swivel, Aluminum, Black, with Bolts, Chrysler, Dodge, 5.7-6.4L, Each

Part Number: HLY-97-341

Not Yet Reviewed

Estimated Ship Date: Monday 11/24/2025

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Estimated Ship Date: Monday 11/24/2025

Thermostat Housing, 90 degree, Swivel, Billet Aluminum, Clear Anodized, O-ring Sealing Style, Chrysler, Each

Part Number: CVS-TSH8CL

5.0 out of 5 stars ( 8 )

Estimated Ship Date: Monday 11/24/2025

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Estimated Ship Date: Monday 11/24/2025

Water Necks and Thermostat Housings, Gen III Hemi, Thermostat/Housing, 45 Degree, Swivel, Aluminum, Black, with Bolts, Chrysler, Dodge, 5.7-6.4L, Each

Part Number: HLY-97-343

3.5 out of 5 stars ( 2 )

Estimated Ship Date: Monday 11/24/2025

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Estimated Ship Date: Monday 11/24/2025

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