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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
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
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
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
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
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 )
$359.00
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$379.99
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
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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$163.95
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 )
$10.99
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$113.99
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
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
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
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 )
$21.99
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
Canton Racing extended fill necks raise the water fill point 6 in. above the manifold, which is ideal for bleeding off air within the cooling system. They feature Canton Racing's 6061-T6 billet aluminum construction for light weight and durability in racing environments. The fill tube is angled at 45 degrees to provide clearance for large air filters, scoops, etc. They include a 1/8 in. NPT to 3/8 in. barbed fitting for plumbing an expansion tank.
( 3 )
$82.00
Improved Racing created the first bolt-on automatic transmission fluid adapter with a thermostat for GM's 6L, 8L, and 10L automatic transmissions. Each adapter's built-in thermostat automatically bypasses the transmission cooler until the fluid reaches operating temperature. The thermostat reduces rough shifts caused by overcooled transmission fluid, reduces wear, and improves efficiency and horsepower. Your transmission can now reach operating temps quickly while retaining the cooling capacity needed for high load activities such as towing or racing. It's the best of both worlds! Adapter model TGM-100-T2 features SAE female -6 AN O-ring boss ports that accept adapter fittings for 5/16, 3/8, 1/2 in. hose barbs or male AN fittings. This allows you to run common rubber transmission cooler lines or braided AN lines. Hard tube adapters may also be used to connect the factory lines directly to the adapter (may require minor bending or adjustment of factory lines). Important application notes: * The adapter can only be used in conjunction with external transmission fluid coolers. * The adapter does not directly connect to the factory hard lines. Aftermarket lines or hard tube adapter fittings must be used. * The adapter will only help resolve rough shifting issues if they are caused by overcooling of the transmission, usually due to the addition of a larger aftermarket transmission cooler. Note that 8L45 and 8L90 transmissions rough shifting issues can often be resolved through GM TSB 18-NA-355 and by simply flushing the transmission fluid. Features and benefits: * Bolt-on fitment for 6L, 8L, and 10L series General Motors automatic transmissions (adapters are required for connecting to factory lines). * Built-in thermostat prevents temperatures from dropping below optimal levels, reducing wear, improving efficiency and horsepower, and helping to eliminate rough shifting. * SAE -6 AN female O-ring boss ports for connection flexibility; choose any line size and type you want. * 6061-T6 billet aluminum construction with black MIL-A-8625 Type II anodized finish. * Uses the factory GM transmission cooler adapter gasket. * Lifetime Warranty Includes: * TGM-100 transmission cooler adapter block with built-in thermostat * Transmission cooler adapter gasket * Zinc-plated steel mounting screws * Installation instructions Applications: * Fits most General Motors 6L, 8L, and 10L series automatic transmissions, including: all 45, 50, 60, 70, 80, 90 variants, and aftermarket performance versions * Fits both E and non-E transmission variants
Not Yet Reviewed
$199.00
Canton Racing lightweight Racer water necks with filler tops are machined from billet aluminum. A compact modular design allows the body to be flipped so that the -16 AN outlet fitting can face left or right. These water necks feature a flange filler top, which accepts a standard radiator cap, top and bottom O-ring seals, a 1/2 in. NPT rear port for a temperature sender, and two 3/8 in. NPT ports for cooling lines. Hardware is included.
( 2 )
$139.00
Philadelphia Racing Products billet swivel thermostat housings make the connection from your upper radiator hose to your engine. Each water neck is fully CNC-machined from 6061-T6 billet aluminum and able to swivel 360 degrees. The housings come complete with stainless steel mounting hardware and O-ring for positive sealing. All units will accept any standard thermostat and one of Philadelphia Racing's O-ring style water pump fittings. Order the size and finish you prefer for your application.
( 5 )
$45.79
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$89.99
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