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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.
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.
Showing In Stock Items. Show All 134 Items.
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 12/15/2025
Estimated Ship Date: Monday 12/15/2025
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Water Neck, Cast Aluminum, Polished, O-Ring, 90-Degree, Chevy, Big/Small Block, Each
Part Number: SUM-371101
Estimated Ship Date: Monday 12/15/2025
Estimated Ship Date: Monday 12/15/2025
Water Neck, OE Style, 90 Degrees, 3/8 in. Pipe, 1/4 in. Bolt Holes, with Plug and Gasket, Aluminum Construction, Natural Finish, Ford, Big Block, Each
Part Number: FSS-84859
Estimated Ship Date: Monday 12/15/2025
Estimated Ship Date: Monday 12/15/2025
Water Neck Assembly, Swivel 45 Degree Angle, Aluminum, Black Anodized Finish, with Bolts, for 1 3/4 in. Hose, Chrysler, Dodge, Gen III Hemi, Each
Part Number: HLY-97-343
Estimated Ship Date: Monday 12/15/2025
Estimated Ship Date: Monday 12/15/2025
Water Neck, Straight, Aluminum, Black, Anodizes, O-Ring, 2.875 in. Bolt Spacing, Dodge. Chrysler, Plymouth, LA, Each
Part Number: PGP-PRP-6728
Not Yet Reviewed
Estimated Ship Date: Monday 12/15/2025
Estimated Ship Date: Monday 12/15/2025
Water Neck, Cast Aluminum, Polished, O-Ring, 45-Degree, Chevy, Big/Small Block, Each
Part Number: SUM-371100
Estimated Ship Date: Monday 12/15/2025
Estimated Ship Date: Monday 12/15/2025
Water Neck, Cast Aluminum, Black Powdercoated, O-Ring, 45-Degree, Chevy, Big/Small Block, Each
Part Number: SUM-371100B
Estimated Ship Date: Monday 12/15/2025
Estimated Ship Date: Monday 12/15/2025
Water Neck, Thermostat Housing, Cast Aluminum, Polished, 60 Degree, Swivel, Chevrolet, LS, Each
Part Number: SUM-370998
Estimated Ship Date: Monday 12/15/2025
Estimated Ship Date: Monday 12/15/2025
Water Neck, Aluminum, Chrome Plated, O-Ring, 45 Degree, Chevy, Big/Small Block, Each
Part Number: MRG-2661
Estimated Ship Date: Monday 12/15/2025
Estimated Ship Date: Monday 12/15/2025
Water Neck, O-Ring, Steel, Chrome, 15 Degree, Chevy, Big/Small Block, Each
Part Number: SUM-G3801-3
Estimated Ship Date: Monday 12/15/2025
Estimated Ship Date: Monday 12/15/2025
Water Neck, Steel, Chrome Plated, Straight Up, Mopar, Small Block LA, Polysphere, Big Block B/RB/Hemi, Each
Part Number: SUM-377806
Estimated Ship Date: Monday 12/15/2025
Estimated Ship Date: Monday 12/15/2025
Thermostat Housing, Billet Aluminum, Natural, Chevrolet, Gen V LT, Each
Part Number: GRN-530000
Not Yet Reviewed
Estimated Ship Date: Monday 12/15/2025
Estimated Ship Date: Monday 12/15/2025
Thermostat Housing Crossover, Aluminum, Ford, 351W, Cleveland Heads, Kit
Part Number: TFS-51600600
Estimated Ship Date: Monday 12/15/2025
Estimated Ship Date: Monday 12/15/2025
Water Neck, Cast Aluminum, Black Powdercoated, O-Ring, 90-Degree, Chevy, Big/Small Block, Each
Part Number: SUM-371101B
Estimated Ship Date: Monday 12/15/2025
Estimated Ship Date: Monday 12/15/2025
Water Neck, Thermostat Housing, Cast Aluminum, Black, 60 Degree, Swivel, Chevrolet, LS, Each
Part Number: SUM-370998B
Estimated Ship Date: Monday 12/15/2025
Estimated Ship Date: Monday 12/15/2025
Water Neck, Billet Aluminum, Polished, 90 Degree, Chevy, Big/Small Block, Each
Part Number: SPE-4933
Estimated Ship Date: Monday 12/15/2025
Estimated Ship Date: Monday 12/15/2025
Water Neck, O-Ring, Steel, Chrome, 15 Degree, Chevy, Big/Small Block, Each
Part Number: SUM-G3801-2
Estimated Ship Date: Monday 12/15/2025
Estimated Ship Date: Monday 12/15/2025
Water Neck, Cast Aluminum, Polished, O-Ring, 75 Degree, Chevy, Big/Small Block, Each
Part Number: SUM-371101-15
Estimated Ship Date: Monday 12/15/2025
Estimated Ship Date: Monday 12/15/2025
Thermostat Housing, O-Ring Style, Billet Aluminum, Natural, 160 Degree Thermostat, Chevrolet, Gen V LT, Each
Part Number: GRN-530160
Not Yet Reviewed
Estimated Ship Date: Monday 12/15/2025
Estimated Ship Date: Monday 12/15/2025
Water Neck, Billet Aluminum, Clear Anodized, 90 Degree, Universal, Each
Part Number: CSI-99163
Estimated Ship Date: Monday 12/15/2025
Estimated Ship Date: Monday 12/15/2025
Water Neck, Steel, Chrome Plated, O-Ring, 45 Degree, Ford, 260-302/351W, Each
Part Number: MRG-2662
Estimated Ship Date: Monday 12/15/2025
Estimated Ship Date: Monday 12/15/2025
Water Neck, Cast Metal, Chrome Plated, 45 Degree, Chevy, Big/Small Block, Each
Part Number: SUM-G3800
Estimated Ship Date: Monday 12/15/2025
Estimated Ship Date: Monday 12/15/2025
Water Neck, O-ring, Steel, Chrome, 45 degree, Ford, Small Block Windsor, Each
Part Number: SUM-G3805-1
Estimated Ship Date: Monday 12/15/2025
Estimated Ship Date: Monday 12/15/2025
Water Neck, Thermostat Housing, 90 Degree, Chrome, Ford Small Block, SBF, Each
Part Number: SUM-370980
Estimated Ship Date: Monday 12/15/2025
Estimated Ship Date: Monday 12/15/2025
Water Neck, Steel, Chrome Plated, 45 Degree, Oldsmobile, V8, Each
Part Number: SUM-376003
Estimated Ship Date: Monday 12/15/2025
Estimated Ship Date: Monday 12/15/2025
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