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EMP Stewart custom thermostats are manufactured by Robert Shaw and modified by EMP Stewart. They feature a balanced sleeve design and are designed for high-rpm applications. These high-flow thermostats are recommended for any performance applications and work well with high-output water pumps.
( 203 )
$34.99
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$38.99
Edelbrock high performance thermostats are designed to ensure consistent cooling in high performance applications. Edelbrock thermostats feature brass and copper valve assemblies with stainless steel bodies for durability. They are bolt-on OE-style replacements and are available to fit many popular domestic and import applications. They are available with160, 180, and 190 degree F ratings.
( 46 )
$22.95
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$26.95
Chevrolet Performance offers the parts that you need to keep your cooling system running right.
( 161 )
$21.85
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$39.82
FlowKooler Robertshaw high performance thermostats are designed to resist large variations in coolant pressures that can occur at high rpm. Under these conditions, coolant temperature and pressure fight for control of the thermostat, keeping it from opening at its designed temperature. These balanced, high performance thermostats feature brass-and-copper construction and will open at the right temperature, regardless of engine rpm.
( 153 )
$28.99
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$47.79
On Sale
Mr. Gasket high-performance thermostats are designed to resist large variations in coolant pressures that can occur at high rpms. Under these conditions, coolant temperature and pressure fight for control of the thermostat, keeping it from opening at its designed temperature. These balanced high-performance thermostats have brass-and-copper construction, and open at the right temperature regardless of engine rpm.
( 236 )
$29.11
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$31.46
$21.83
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$28.31
Instant Rebate
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
$29.25
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$31.82
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.
( 48 )
$22.99
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.
( 39 )
$23.99
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$34.99
Allstar Performance aluminum water necks are designed to rotate 360 degrees, allowing various radiator hose routing options for custom engine cooling applications. The water necks hold the thermostat in place so it can open and close to regulate coolant flow. The thermostat creates an opening in the water neck that allows coolant to flow from the radiator to the engine. Allstar Performance water necks are made from die-cast billet aluminum for strength and durability and are available in a range of styles and finishes to meet your needs. Order the model for your application. Additional features and benefits: * Allows for more flexibility in routing radiator hoses, which can improve engine cooling and make it easier to connect hoses to the engine * A swivel water neck makes it easier to connect radiator hoses to the engine, especially when connecting left and right hoses * Thick mounting flange prevents warping and provides a positive engine coolant seal * Chrome-plated finish for lasting beauty, some swivel water necks are made with hard coat anodizing to improve wear and corrosion-resistance * Stainless steel mounting hardware and an O-ring for sealing the base of the water neck to engine are included
Not Yet Reviewed
$22.99
March Performance thermostat housings are available in several styles and finishes covering a wide range of vehicle engine applications. Each housing is CNC-machined from 6061 T-6 aluminum and available polished, black anodized, or clearcoated. Most styles include mounting hardware and an O-ring for a clean seal. The 1.5 in. radiator hose neck swivels inside of base for perfect routing. March Performance thermostat housings are compatible with OEM and numerous aftermarket thermostats. Choose the one designed for your application.
( 11 )
$49.99
Allstar Performance water neck spacers fit between intake manifold and water neck. They're designed to move the thermostat and housing up so they are higher than the intake manifold. The increased thermostat height is useful for cars with radiators higher than the intake manifold and these spacers provide up to four connection options for temperature senders or additional water lines. Most water neck spacers feature an O-ring seal on one side eliminating the need for a gasket.
( 6 )
$45.69
Lingenfelter Performance Engineering offers premium-quality thermostats for several applications. They're all direct drop-ins with no modifications needed and each includes the rubber seal. Reduce coolant temperature, produce more horsepower, and improve performance with Lingenfelter Performance Engineering thermostats.
( 142 )
$24.65
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$37.95
Redhorse Performance 4910 Series water neck assemblies offer solution upgrades for your coolant outlets. These thermostat housings, or "water necks" as they are also called, make an excellent option for replacing worn or damaged of the stock engine coolant water outlet—or for creating custom color combinations at a minimal cost. RHP's thermostat housing assemblies are precision-machined from aluminum and are available in several styles, with O-ring gaskets to eliminate leakage, and offered in choice of clear, or blue, black, or red anodized finishes. Order the model for your application.
( 4 )
$53.96
You always get optimum performance when your engine is running at the proper temperature. Chevrolet Performance thermostats are made of high-quality stainless steel and copper. They help your ride stay cool, to make sure that you get the most out of your vehicle. Stop the knocking, power reduction, and possible engine damage that high-temperature running can cause. Chevrolet Performance thermostats will keep your engine running at the perfect temperature--what more could you ask for?
( 10 )
$22.99
Chrome water necks from Trans-Dapt add a touch of class to your cooling system. They're available for a variety of applications, in both O-ring and gasket styles.
( 37 )
$22.99
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$48.99
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
These Trans-Dapt water necks feature polished aluminum construction. O-ring seal and bolts are included.
( 30 )
$30.99
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$43.99
On Sale
With one of these low-temperature JET thermostats, you get consistent engine cooling and increased horsepower by reducing engine temperature. You'll also obtain more precise metering of water throughout your engine—as well as a long product life, since the thermostats are made from stainless steel.
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$22.46
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$59.24
$20.21
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$53.32
Mount one of these CSR water necks on your manifold, and you'll have an easy way to top-off your cooling system and still have a provision for overflow. Precision-machined from lightweight 6061-T6 billet aluminum, they'll bolt right onto your manifold or an existing 2 in. spacer. Each of these necks comes with stainless steel hardware; a cap is not included.
( 6 )
$46.95
On Sale
A proper engine temperature assures peak performance and the highest efficiency. To prevent overheating your marine engine, select Quicksilver thermostat kits. They are made from quality materials and meet OEM specifications to maximize performance and service life. Each kit will include a thermostat and gasket(s)/seal(s). Remove your non-functioning thermostat and replace it with a new one from Quicksilver designed for your marine engine.
Not Yet Reviewed
$30.99
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$47.99
$27.89
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$43.19
On Sale
Summit Bucks
Mishimoto thermostats are effective in noticeably lowering engine coolant temperatures. These thermostats are built with high-quality wax and are shipped with new rubber gaskets (where applicable) for a good, leak-free seal. They are then digitally calibrated for precise operation. Mishimoto thermostats open up at a slightly lower temperature than OEM or standard thermostats once your engine is fully warmed up. This allows the coolant to flow through the engine sooner, thus reducing and maintaining cooler engine temperatures. Whether you have a daily driver or a modified and upgraded turbo, Mishimoto thermostats will maintain optimal temperatures to efficiently cool your application.
( 73 )
$41.95
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$58.95
$37.76
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$53.06
On Sale
Summit Bucks
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
Summit Racing offers replacement thermostats for thousands of vehicles. They're offered in a variety of styles, materials, flow rates, temperature ratings, and more. A reliable thermostat is essential to your cooling system and overall performance—kicking in precisely when your engine needs it. Order the model best suited for your application.
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$23.99
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$49.99
Summit Bucks
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
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