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Thermostats, Housings & Fillers

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Results 1 - 24 of 109

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.

4.19 out of 5 stars ( 206 )

$25.99

$42.99

Summit Racing™ Thermostats

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.

4.27 out of 5 stars ( 356 )

$23.99

$49.99

EMP Stewart High Performance Thermostats

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.

4.71 out of 5 stars ( 198 )

$34.79

$38.79

Edelbrock High Performance Thermostats

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.

4.5 out of 5 stars ( 44 )

$22.95

$26.95

FlowKooler Robertshaw Series High Performance Thermostats

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.

4.59 out of 5 stars ( 149 )

$28.99

$33.79

Chevrolet Performance Thermostat Housings

Chevrolet Performance offers the parts that you need to keep your cooling system running right.

4.81 out of 5 stars ( 159 )

$21.85

$39.82

On Sale

Mr. Gasket High Performance Thermostats

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.

3.97 out of 5 stars ( 233 )

$29.11

$31.46


$20.45

$27.89

Lingenfelter Performance Engineering Thermostats

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.

3.92 out of 5 stars ( 141 )

$24.65

$38.90

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.

3.71 out of 5 stars ( 112 )

$55.29


$28.33

$49.76

RIPP Superchargers Thermostats

RIPP Superchargers thermostats are RIPP-tested and customer-approved. Compatible with RIPP tuning or stock, their thermostats will work to keep your engine much cooler on the road when you're towing, or on long days over the trails. Installation is easy--simply drop in--no modifications are required. Replace your stock thermostat with RIPP Superchargers 180 degree thermostats and let the cooling--and fun--begin!

3.82 out of 5 stars ( 11 )

$44.56

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.

4.15 out of 5 stars ( 104 )

$22.95

$49.95

On Sale

Mr. Gasket LS Thermostats

Mr. Gasket offers these high-quality thermostats for GM LS series automobile and light truck engines that utilize a separate thermostat and water neck. They're available in 160 and 180 degree temperatures to suit your engine application.

4.12 out of 5 stars ( 25 )

$36.74


$33.07

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.

4.26 out of 5 stars ( 61 )

$22.94

$29.11


$20.65

$26.20

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

$33.50

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.

4.14 out of 5 stars ( 85 )

$22.72

$41.60


$20.45

$37.44

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.

4.7 out of 5 stars ( 46 )

$22.99

Summit Bucks

ACDelco GM Genuine Parts Engine Coolant Thermostats

ACDelco GM Genuine Parts engine coolant thermostats monitor the flow of coolant through your vehicle's engine and radiator. Built to the exact specification of your original component, these are the only GM-recommended replacements. Do not settle for anything less than the best; choose ACDelco GM Genuine Parts.

4.42 out of 5 stars ( 33 )

$22.99

$53.99

WEHRS Thermostat Risers

WEHRS thermostat risers are used when running the remote lines to the rear of the intake to prevent vapor pockets, or if you need more clearance at the front of the motor. These thermostat housing spacers are constructed from quality materials, and are available in several configurations to match any need. Order the WEHRS thermostat riser suited to fit your application.

4.5 out of 5 stars ( 6 )

$28.99

Summit Bucks

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.

4.6 out of 5 stars ( 30 )

$22.99

$47.99

On Sale

JET Low Temp Stats

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.

4.28 out of 5 stars ( 137 )

$22.46

$59.24


$20.21

$53.32

Moroso Thermostat Spacers

Moroso thermostat spacers make fixing fitment issues a snap. The billet aluminum spacers raise the thermostat and add ports for water lines to the cylinder heads. The machined O-ring groove on the intake side ensures an excellent seal making installation easy and headache-free.

4.86 out of 5 stars ( 7 )

$44.99

$49.99

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.

4.38 out of 5 stars ( 13 )

$22.95

Canton Racing Weld-On Billet Aluminum Fill Necks

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.

4.86 out of 5 stars ( 7 )

$28.00

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.

4.18 out of 5 stars ( 39 )

$23.99

$39.99

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