Availability
Redhorse Performance 4911 Series water neck adapters are designed for high performance and durability. The lightweight adapters are precision CNC-machined from aluminum, and are available in clear or blue, black, or red anodized finishes. Order the adapter model for your application needs.
Not Yet Reviewed
$23.71
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$31.37
Canton Racing universal outlet fittings replace the standard water necks on Chevy intakes so that a -16 AN fitting and a steel braided hose can be used instead of the normal radiator hoses. You can depend on Canton Racing for all of your cooling needs.
Not Yet Reviewed
$39.00
Engine coolants need a path to travel and occasionally detour. Thus, water bypass fittings and hoses from KRC Power Steering are replacement parts that are always in high demand. Whether you simply need the aluminum hardware or a complete kit with braided stainless steel hoses, KRC has options to fit most water bypass applications.
Not Yet Reviewed
$46.08
These Edelbrock water bypass kits will allow water to flow through the thermostat and out of the bypass spacer without going into the upper radiator hose. They include the cast aluminum bypass spacer, gasket, blue anodized fittings, and -6AN braided stainless steel hoses.
( 2 )
$143.95
Remotely locate your water pump for applications that have a tight fit with CVR universal water pump manifolds! It's simple--use these manifolds in place of a standard water pump and plumb the inlet fitting on the front or the top! These manifolds are computer-designed, made from T6-6061 billet aluminum, and are available in your choice of anodized finishes. CVR universal water pump manifolds include an Allen key plug.
( 1 )
$76.99
PRW water necks are available with a rubber O-ring or a standard paper gasket for a leak-free seal. They're made from cast or billet aluminum, straight or angled, with either a natural or polished finish. Order the model recommended for your engine application.
Not Yet Reviewed
$29.85
Fathouse Performance coolant distribution blocks are perfect for your custom twin turbo project. They're fabricated from solid T6061 billet aluminum—and feature four options for inlet/outlet supply and eight outlets that can be run to turbos or wastegates to keep them cool. Two mounting bosses are machined into the back side.
Not Yet Reviewed
$99.99
These Meziere water neck plates are designed to help you connect a smaller line to your manifold at the spot where the thermostat housing usually bolts on. They are drilled and tapped 3/4 in. NPT to accept many common fitting arrangements.
Not Yet Reviewed
$33.52
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$185.60
Allstar Performance low-profile aluminum water necks sit only 1.75 in. above the intake flange and feature a front exiting fitting. These Chevrolet V8-style water necks have a black anodized finish to help protect against corrosion, and include stainless steel hardware and an O-ring for sealing the base of the water neck to engine. Available in two neck outlet sizes, as well as a housing-only option, select the one ideally suited to your needs.
Not Yet Reviewed
$104.99
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$123.99
Be Cool filler necks feature billet aluminum construction. They are designed to be strong, won't stress-crack or leak, and have a large overflow tube to relieve pressure fast.
( 1 )
$24.99
Vibrant Performance radiator filler necks feature 6061 aluminum construction. They weld-on, include hose barb fitting, and are offered in two sizes. Mate them with their matching caps (sold separately) for the proper sealing.
Not Yet Reviewed
$30.79
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$33.50
Moroso offers manifold filler necks in a variety of styles, materials, and finishes—for applications from 1955 and up. These replacements locate the filler at the highest point to bleed off air on cars with low-mount radiators. The filler necks can be located on either the left or right side of the vehicle. They include 1/2 in. NPT fittings for the installation of a water temperature sending unit, and two 1/4 in. NPT fittings for return lines on popular aftermarket cylinder heads.
( 20 )
$47.99
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$160.99
These Trick Flow® Clevor water crossover kits allow you to mate the cooling passages of Trick Flow® PowerPort Cleveland cylinder heads onto a Ford Windsor engine block. They replace the water passage and thermostat housing on factory Windsor intake manifolds with one that redirects the coolant out of the front of the cylinder heads and moves the thermostat housing horizontally above the original Windsor location. Kits include: * Thermostat housing * 4 hose fittings * 2 suction cups * 4 hose clamps * 2 mounting bolts * 2 mounting washers
( 4 )
$144.99
Summit Racing™ billet weld-on fill necks are ideal for use wherever a heavy-duty, custom application filler neck is required. They feature 6061 T-6 aluminum construction for durability in racing or street applications. These fill necks include 1/8 in. NPT to 3/8 in. barbed fittings for the plumbing of an expansion tank.
Not Yet Reviewed
$11.99
Canton Racing billet weld-on fill necks are ideal for use wherever a heavy-duty, custom application filler neck is required. They feature 6061-T6 billet aluminum construction for durability in racing or street applications. These fill necks include 1/8 in. NPT to 3/8 in. barbed fittings for the plumbing of an expansion tank.
( 8 )
$28.00
Fleece Performance coolant bypass kits meet the demands for more cooling that comes with increased horsepower. Your engine cooling system was designed to handle a 300-350hp engine. When you increase the power, you increase the demand on your cooling system and the possibility of problems that may lead to failure. Fleece coolant bypass kits feature a secondary thermostat that operates on temperature--not excessive pressure--solving excessive pressure problems before they become an issue by ensuring consistent temperatures across all six cylinders. Each kit includes high-quality AN O-ring fittings and AN hose connections with braided hose to ensure a leak-free installation. When there's a need for better performance, you can rely on coolant bypass kits from Fleece to supply the necessary components for assured greater performance.
( 6 )
$27.99
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$379.99
CSR thermostat housings are constructed from CNC-machined billet 6061-T6 aluminum, with a variety of anodized color options. These water necks are available for 1 1/4 in., 1 1/2 in., or -16 AN fitting hose connections. The flange is sealed at the manifold with an O-ring, eliminating the gasket. Stainless steel hardware is included. Order the housing designed for fitment with your vehicle and engine application.
( 33 )
$66.95
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$164.00
Replace your stock thermostat housing with new parts from Dorman. These quality replacement components offer solution upgrades for your coolant system, and they are available for several applications. Don't wait for your engine to overheat or for the check engine light to illuminate--upgrade to reliable, OE-fitting thermostat housings from Dorman.
( 176 )
$4.99
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$843.99
JOES Racing Products water neck outlets are compact and lightweight. These aluminum units have a no. 16 or no. 20 fitting for your radiator hose, and the base has an O-ring for sealing to your intake manifold. JOES also offers a ported version designed with two 3/8 in. NPT ports for additional water lines.
( 1 )
$37.95
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$69.95
On Sale
Earl's leads the way for LS engines! OE water pumps come with push-on barbs for clamping the standard radiator hoses. Push-on hose connections just don't meet the demands of extreme performance. Earl's LS water pump adapter kits convert both the inlet and outlet to -20 AN fittings. The kits work with all LS water pumps; an O-ring adapter plate is included that upgrades early LS water pumps to the later, less restrictive style of thermostat. Features include: * Billet aluminum and stainless steel components * Anodized protection on aluminum components * Requires thermostat upgrade on early LS water pumps * Welding required
Not Yet Reviewed
$163.95
$90.95
Canton Racing billet aluminum water necks will not crack or break like conventional OEM water necks. They feature CNC-machined billet aluminum construction for ultimate durability. Canton Racing billet aluminum water necks are available with a standard 1 1/2 in. smooth hose connection or a -16 AN male threaded fitting connection. The water necks include stainless steel mounting hardware for the ultimate protection against corrosion.
( 38 )
$75.00
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$139.00
Moroso water neck block-off plates can provide an ideal base to drill or weld your own fitting in place. They are made of aluminum and have two pre-drilled mounting holes to ensure a perfect fit to the intake manifold. The plates include a new gasket and will fit Chevrolet V8 engines.
( 4 )
$15.99
From racers for racers--Drag Race Solutions water filler necks offer cool performance and even cooler style! A making of their own design, these filler necks are crafted in the USA from billet aluminum. Drag Race Solutions one-piece top expansion portions are machined with female straight O-ring port in the front--allowing you to use the fitting size you need for your application. The tops are bolted to O-ringed seal base plates with stainless steel cap screws. Plus, being racers themselves, they spent ample design time on radiator cap fit to ensure pressure seal and locking mechanism work as well as possible for your extreme racing conditions. A 1/4 in. push lock overflow fitting is included. You may choose from three finishes, all of which have been tumble polished first, then powdercoated a satin black, polished to a mirror finish, or left raw for you to finish as you so desire.
( 1 )
$130.50
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$269.99
Rein Automotive coolant flange kits with hose and thermostat are OE-quality replacements made up of direct-fitting premium material components. They focus on all of the parts surrounding the replacement of the cracking, leaking, swelling or deteriorating cylinder head coolant junction flange, including the flange, thermostat, temperature sensor, heater and/or radiator hoses, and associated gaskets and seals. Repeated thermal cycling of the plastic coolant flange leads to its deformation and coolant leaking. This replacement coolant flange is made from virgin OE-type resin for added durability, and the included hose(s) are made from OE-type rubber compound with OE-type quick-connect hose end fittings. Replacing leaking and failing cooling system components and performing a proper coolant flush at the same time will ensure a long life of the vehicle's cooling system. Order the kit recommended for your vehicle.
( 2 )
$44.99
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$145.99
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