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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.
( 30 )
$22.99
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$53.99
Summit Racing™ water neck spacers are designed to move the thermostat and housing up 1 in. higher to help clear high intake manifolds. The added ports allow the addition of extra sensors and water temperature sending units. These aluminum spacers are fully machined to ensure a great fit and are available in polished or black anodized finishes.
( 6 )
$31.99
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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$39.95
These Meziere water neck spacers are designed to move the thermostat and housing up 1 in. higher than the intake manifold. This increased height helps clear high intake manifolds and the added ports allow the addition of extra sensors and water temperature sending units. The spacers are made of aluminum and fully machined to ensure a great fit. Meziere water neck spacers are offered in a variety of colors and finishes.
( 64 )
$40.88
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$42.07
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
Moroso billet aluminum filler necks allow you to install a variety of bolt-on style filler necks or block-off plates, offering cooling system flexibility for both race and street applications. The base locates the filler neck at the highest point, to bleed off air on cars with low-mount radiators. They include a machined port for installing a water temperature sending unit, and two ports to plumb return lines on popular aftermarket heads. And, to give you versatile mounting options--these filler necks can be flipped 180 degrees for either a left or right water hose outlet location.
( 9 )
$54.99
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
Years of research and development led to the advancement of the MotoRad failsafe thermostats from Wilson Manifolds. MotoRad failsafe thermostats utilize a unique and exclusive extra stroke that allows for operation in two stages. During stage 1, they will operate like any other thermostats. Stage 2 operation provides extra stroke and actually locks the thermostats open when overheating is encountered. These thermostats are constructed from stainless steel and include an integrated jiggle valve to help stabilize the pressure in the engine, reducing engine warm-up delay and eliminating trapped air in the cooling system. These are the first thermostats in use worldwide that will not fail. MotoRad failsafe thermostats from Wilson Manifolds are evidence of what is possible when technology and design unite. Get on the leading edge--get MotoRad failsafe thermostats.
( 7 )
$36.00
JOES Racing Products Thermo spacers let you add more for better cooling. Thermo spacers are made from strong 6061-T6 aluminum and the bases are fitted with O-rings for sealing to your intake manifold. Now you can plumb additional lines to your heads, install a water temperature sending unit, and a water temp gauge in one spacer. Get cool with JOES Racing Products Thermo spacers.
Not Yet Reviewed
$43.95
Vintage Air offers replacement thermostats for your car's cooling system. The heat-conducting copper/stainless steel sealed units will keep your engine temperature within OEM specifications with a 186 degree opening temperature rating. When replacing this major component in your heating system, Vintage Air is a name you can trust.
( 7 )
$25.99
All thermostats are not created equal. MotoRad thermostats offer superior, consistent performance that begins at the heart of their design. The ELAC heat motor, with its unique properties, provides a precise response to your vehicle's cooling system needs. Powered by a precisely formulated thermal-responsive wax pellet in a heat-conducting copper cup equipped with a stainless steel piston, the heat motor is 100 percent calibrated to ensure quality and performance. MotoRad encases the motor in a stainless steel assembly with a self-cleaning, self-aligning valve, flange, bridge, and spring for a securely sealed unit that will keep your engine temperature within OEM specifications. All thermostats are not alike; so, when you want a well-engineered product, look for MotoRad thermostats.
( 4 )
$23.99
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$25.79
On Sale
A defective thermostat can result in engine overheating and potential internal damage. Improve the reliability of your Toyota cooling system with a Mishimoto Low-Temperature Racing Thermostat and housing! They're designed as a direct-fit replacement for your aging stock unit. The Mishimoto thermostats have a lower activation temperature (71 degrees C/160 degrees F) compared to the factory thermostat (82 degrees C/180 degrees F). The lower activation temperature allows coolant to flow through the engine earlier, which yields and maintains lower engine temperatures. These thermostats are ideal for use in warmer climates, on vehicles making more power than stock, or under extreme towing/driving conditions. The stock-style housing with O-ring will provide a proper seal and installs easily. Order the model recommended for your application.
Not Yet Reviewed
$36.95
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$48.95
$33.26
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$44.06
In racing, precision is everything--from the driver's skill to each component under the hood. A racing engine thermostat isn't just about maintaining a lower temperature; it must endure the relentless demands of high-flow, high-pressure environments that standard parts simply can't handle. MotoRad Spec-R racing thermostats are engineered to offer rapid response and precise temperature control under extreme conditions, allowing optimal engine performance without compromise. They are manufactured to provide durability, withstand intense vibrations, and maintain reliability at every stage, ensuring that racers get consistent performance, lap after lap. Run your vehicle with maximum cooling efficiency; select the Spec-R racing thermostat best suited to your vehicle's needs. Features: * Black oxide coating for high temperature tolerance, corrosion resistance and life-long durability * Lower than OE opening temperature for cooler engine operation, resulting in more power * Specially formulated Spec R heat element mixture for faster response time * Proprietary gasket composition to withstand high-pressure/high performance cooling systems Note: Gaskets/seals may or may not be included.
( 1 )
$23.99
MotoRad offers fail-safe thermostats for a wide range of vehicles. These OE-style replacements are designed for a direct-fit and optimum performance. High-grade stainless steel and copper construction assure good response to temperature changes in the engine coolant. The thermostats are 100 percent tested and calibrated to meet or exceed factory standards. Order the model recommended for your application.
( 2 )
$34.99
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.
( 251 )
$36.99
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