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Automotive Cooling & Heating Parts
When you make engine modifications for more power, power-robbing heat increases—keeping cool is the key to maximum performance! Summit Racing has everything you need...
When you make engine modifications for more power, power-robbing heat increases—keeping cool is the key to maximum performance! Summit Racing has everything you need to offset that extra heat, including high performance radiators and oil coolers, electric fans, high-flow electric water pumps, and thermostats. We also have radiators and coolers for everything from stock replacements to street rods and other custom applications, plus flex fans, wiring kits, and radiator caps. If your heater or air conditioner has seen better days (or if your vehicle never had one!), we can help you out with heater cores, air conditioners,...
When you make engine modifications for more power, power-robbing heat increases—keeping cool is the key to maximum performance! Summit Racing has everything you need to offset that extra heat, including high performance radiators and oil coolers, electric fans, high-flow electric water pumps, and thermostats. We also have radiators and coolers for everything from stock replacements to street rods and other custom applications, plus flex fans, wiring kits, and radiator caps. If your heater or air conditioner has seen better days (or if your vehicle never had one!), we can help you out with heater cores, air conditioners, and HVAC ducts, too.
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Summit Racing™ Aluminum Water Necks
Summit Racing™ aluminum water necks swivel 360 degrees to give you various radiator hose routing options. They come with bolts and a highly polished or anodized aluminum finish for a sharp appearance.
( 214 )
$25.99
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$42.99
Billet Specialties Thermostat Housings
Billet Specialties thermostat housings not only look good, but they also get rid of leaky paper gaskets thanks to their O-ring seal design. You can choose the conventional vertical housing or the high-tech 360 degree swivel housing. They're available straight-up or with a 0, 15, or 45 degree angle and come complete with stainless hardware.
( 245 )
$65.86
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$199.95
Chevrolet Performance Thermostat Housings
Chevrolet Performance offers the parts that you need to keep your cooling system running right.
( 161 )
$22.19
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$40.44
On Sale
Mr. Gasket Chrome Plated O-Ring Water Necks
Mr. Gasket chrome plated water necks feature an O-ring style seal to prevent water leaks. Precision die-cast for a great fit, they're first polished to a high luster, then beautifully chrome plated for lasting beauty. These water necks come complete with an O-ring and mounting bolts.
( 65 )
$23.51
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$29.84
$21.16
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$26.86
On Sale
Mr. Gasket Water Necks
Mr. Gasket offers replacement water necks in a variety of styles, materials, finishes, sizes, and angles. Water necks help to hold the vehicle's thermostat in place as it opens and closes—to regulate the flow of coolant through your engine. The opening in the water neck created by the thermostat allows coolant to flow from the radiator back to the engine. Order the model recommended for your vehicle.
( 119 )
$65.29
$23.14
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$76.05
Edelbrock Water Necks
Edelbrock water necks are a great way to finish off your engine. They feature an O-ring design base for an improved seal, which also allows for removal without requiring a new gasket. The necks fit any 1 1/2 in. diameter outlet hose, include mounting hardware, and are available in a variety of styles, materials, and finishes.
( 105 )
$19.95
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$49.95
Clearance
ACDelco GM Genuine Parts Water Necks and Thermostat Housings
ACDelco water necks and thermostat housings fit your vehicle just like the originals. When you need to restore the efficiency of your water inlet/thermostat housing, these quality replacements fix your issues with leak-free performance and peace of mind. The units are available in a variety of configurations for applications from the 1960s and up. You can be assured that not only the fit, but also the function will be just as expected. Replace your water necks with one of the same from ACDelco.
( 32 )
$70.99
$9.99
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$170.99
Summit Racing™ Chrome Water Necks
Summit Racing™ water necks are made from cast steel with durable chrome plating, providing your engine bay with good looks and a long life. They include a paper gasket and bolts for a complete leak-free installation.
( 131 )
$15.99
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$38.99
Allstar Performance Chevy Aluminum Water Necks
Allstar Performance Chevy aluminum water necks are designed to fit most Chevy V8 engines, will accept most standard thermostats, and swivel (up to a full 360 degrees, depending on the model) to simplify connection of left- or right-hand radiator hoses to the engine. Their black anodized finish helps protect against corrosion, along with stainless steel hardware and an O-ring for sealing the base to the engine. Get the performance you need and the looks you want with an assist from the Allstar Performance Chevy aluminum water neck best suited for your application.
( 52 )
$17.99
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$104.99
Dorman Thermostat Housings
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.
( 182 )
$8.99
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$327.99
On Sale
Scott Drake Water Necks
Clean up your cooling system area with a Scott Drake water neck. These water necks are manufactured using quality materials, ensuring a proper fit.Paint it Ford engine blue to match original, leave natural or polish it to compliment any engine compartment.
( 86 )
$31.66
$23.29
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$93.89
Spectre Performance Water Necks
Spectre Performance water necks are available for a variety of applications. Many are designed around OEM specifications, are offered in different materials and finishes, neck angles, and swivel and non-swivel types. Spectre also offers water necks with bypass hose connections. Most will include bolts and O-ring where applicable.
( 34 )
$12.99
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$39.99
Summit Racing™ Weld-On Billet Aluminum Fill Necks
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
ACDelco Engine Coolant Thermostat Housings
ACDelco engine coolant thermostat housings are GM-recommended replacements for your vehicle's worn or damaged original equipment. The inline housing holds the thermostat and serves as a connection point for the radiator hose and inlet or outlet, and may also include ports for sensors or switches. These high-quality replacements are manufactured to fit your specific GM vehicle, providing the same performance, durability, and service life that you expect from General Motors.
( 5 )
$38.99
Howe Radiator Filler Necks
Some essential parts are just prone to wearing out due to what they're exposed to. Howe radiator filler necks help keep you from blowing a hole in your budget with an expensive radiator replacement. These universal billet aluminum necks are available in weld-on and weld-in versions to fit your specific application. Save your wallet and your radiator with a Howe radiator filler neck. Order the size designed to fit your specific model.
( 2 )
$13.99
Vibrant Performance Radiator Filler Necks
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
Four Seasons Water Necks
Four Seasons water necks are offered in a wide selection for most popular import and domestic vehicles. These water necks include the necessary gaskets or O-rings where applicable.
( 252 )
$8.99
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$255.99
BluePrint Engines Water Necks and Thermostat Housings
BluePrint Engines offers water necks and thermostat housings for a variety of Chevrolet V8 small block and big block engine applications from 1955 and up. These engine coolant housings are available in numerous configurations, manufactured from factory materials and specifications to ensure proper fitment and long-lasting performance. Order the model recommended for your vehicle.
( 2 )
$19.99
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$39.99
Mishimoto Coolant Fill Necks
Mishimoto aluminum coolant fill necks are CNC-machined and ready to be welded for use with your custom project! Offered in two sizes, these high performance fill necks include a screw-in nipple for overflow and are compatible with their high-pressure radiator caps. Customize your fabricated aluminum radiator with Mishimoto aluminum coolant fill necks.
( 13 )
$22.99
Moroso Manifold Filler Necks
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
On Sale
Scott Drake Swivel Water Necks
Scott Drake swivel water necks are machined from billet aluminum. Their 2-piece design allows the neck to fully rotate to perfectly fit your particular application. These exclusive Scott Drake water necks were designed for classic car applications that require a 45 degree angle. They include mounting hardware and rubber O-ring seals to ensure a leak-proof installation.
( 9 )
$101.95
$91.75
Canton Racing Billet Aluminum Racer Water Necks with Filler Top
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
Summit Racing™ Billet Aluminum Water Necks
These Summit Racing™ 360 degree swivel water necks are constructed from high-quality T6-6061 billet aluminum and feature a beautiful, bright-anodized, machined finish. The flange is sealed at the manifold with an O-ring, eliminating the gasket, and stainless steel hardware is included.
( 28 )
$88.99
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$94.99
Allstar Performance Small Block Ford Chrome Plated Water Necks
Allstar Performance designed these cast aluminum 45 degree water necks to fit small block Ford applications. Finished with a lustrous chrome plating, Allstar Performance chrome plated water necks include an O-ring for sealing the base flange and two hex head bolts.
( 18 )
$17.99
