Availability
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 869 Items.
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: Feb 10, 2026 if ordered today
Estimated Ship Date: Feb 10, 2026 if ordered today
LSX-12AN FITTING WATER NECK AND WATER PUMP ADAPTER
Part Number: TSN-HC8939
Not Yet Reviewed
Estimated Ship Date: Mar 24, 2026 if ordered today
Estimated Ship Date: Mar 24, 2026 if ordered today
Water Neck, Aluminum, Black Anodized, 90 Degree, Chevy, Big/Small Block, Each
Part Number: MOR-63424
Estimated Ship Date: Today
Estimated Ship Date: Today
Water Neck, Offset Adapter Style, Billet Aluminum, Black Powdercoated, Chevy, Each
Part Number: CHH-3300-001B
Not Yet Reviewed
Estimated Ship Date: Today
Estimated Ship Date: Today
Water Neck, Aluminum, Natural, 90 Degree, Chevy, Small Block/Big Block, Each
Part Number: MOR-63420
Estimated Ship Date: Today
Estimated Ship Date: Today
Thermostat Housing Crossover, Aluminum, Ford, 351W, Cleveland Heads, Kit
Part Number: TFS-51600600
Estimated Ship Date: Today
Estimated Ship Date: Today
Water Neck, Aluminum, Black/Natural, 90 Degree, Chevy, Big/Small Block, Kit
Part Number: CTR-80-006
Estimated Ship Date: Today
Estimated Ship Date: Today
Water Neck, Billet Aluminum, Clear Anodized, Swivel, 90 Degree, Ford, 260-302/351W, Each
Part Number: CSI-9111C
Estimated Ship Date: Today
Estimated Ship Date: Today
Water Neck, Aluminum, Black Anodized, Straight Up, -16 AN Male Threads, Chevrolet, Each
Part Number: JOE-36050
Not Yet Reviewed
Estimated Ship Date: Today
Estimated Ship Date: Today
Water Neck, Billet Aluminum, Black Anodized, Radiator Cap Filler, Chevy, Big/Small Block, Each
Part Number: MOR-63465
Estimated Ship Date: Today
Estimated Ship Date: Today
Water Neck, Billet Aluminum, Polished, Straight Up, Ford, Country, Kit
Part Number: CTR-80-026
Estimated Ship Date: Today
Estimated Ship Date: Today
Water Neck, LS Water Pump Adapter, Straight Up, Billet Aluminum, Clear Anodized, Chevy, Small Block LS, Kit
Part Number: EAR-LS0005ERL
Not Yet Reviewed
Estimated Ship Date: Today
Estimated Ship Date: Today
Water Neck, Billet Aluminum, Clear Anodized, Swivel, 90 Degree, Pontiac, 350-455, Each
Part Number: CSI-9114C
Estimated Ship Date: Today
Estimated Ship Date: Today
Water Neck, Billet Aluminum, Clear Anodized, Swivel, 90 Degree, Ford, 429/460, Each
Part Number: CSI-9112C
Estimated Ship Date: Today
Estimated Ship Date: Today
Water Neck, 90 Degree, Swivel, Billet Aluminum, Natural, Chevy, LS, Each
Part Number: CTR-80-052
Estimated Ship Date: Today
Estimated Ship Date: Today
Water Neck, Billet Aluminum, Clear Anodized, Swivel, 90 Degree, Chevy, Big/Small Block, Each
Part Number: CSI-911AN20C
Estimated Ship Date: Today
Estimated Ship Date: Today
Water Neck, Billet Aluminum, Polished, Straight Up, Ford, Each
Part Number: CTR-80-036
Estimated Ship Date: Feb 10, 2026 if ordered today
Estimated Ship Date: Feb 10, 2026 if ordered today
Water Neck, Billet Aluminum, Polished, 90 Degree, Ford, Small Block, Each
Part Number: CTR-80-056
Estimated Ship Date: Today
Estimated Ship Date: Today
Water Neck, Billet Aluminum, Clear Anodized, Swivel, -20 AN, 90 Degree, Ford, 260-302/ 351W, Each
Part Number: CSI-9110AN20C
Not Yet Reviewed
Estimated Ship Date: Today
Estimated Ship Date: Today
Water Neck, Aluminum, Black Anodized, Straight Up, -20 AN Male Threads, Chevrolet, Each
Part Number: JOE-36060
Not Yet Reviewed
Estimated Ship Date: Today
Estimated Ship Date: Today
Water Neck, Billet Aluminum, Clear Anodized, Swivel, 90 Degree, Chevy, Big/Small Block, Each
Part Number: CSI-911AN16C
Not Yet Reviewed
Estimated Ship Date: Today
Estimated Ship Date: Today
Water Neck, Billet Aluminum, Natural, Straight Up, -16 AN Male, Ford, Big Block 385 Series, Cleveland, Kit
Part Number: CTR-80-037
Not Yet Reviewed
Estimated Ship Date: Today
Estimated Ship Date: Today
Water Neck, Billet Aluminum, Natural, Straight Up, 1.50 in. Hose, Ford, Big Block 385 Series, Cleveland, Kit
Part Number: CTR-80-027
Estimated Ship Date: Today
Estimated Ship Date: Today
Water Neck, Billet Aluminum, Black Anodized, Spacer, 2 5/16 in.Tall, Chevy, Big/Small Block, Each
Part Number: MOR-63421
Not Yet Reviewed
Estimated Ship Date: Today
Estimated Ship Date: Today
Water Neck, Aluminum, Natural, 90 Degree, Chevy, Big/Small Block, Each
Part Number: MOR-63423
Estimated Ship Date: Today
Estimated Ship Date: Today
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