Availability
Showing In Stock Items. Show All 54 Items.
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 )
$55.99
Allstar Performance billet water necks fit most Chevy V8s, accept most standard thermostats, and swivel a full 360 degrees to simplify connection of LH or RH radiator hoses to the engine. Available in several outlet sizes, each one features a black anodized finish to help protect against corrosion. Stainless steel hardware and an O-ring for sealing the base of the water neck to engine are included. Choose the size you need.
Not Yet Reviewed
$99.99
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 )
$99.99
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
—
$128.20
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
Fleece Performance water neck block-off plates are thicker than the stock plate and feature an integrated square cut O-ring with no gasket required. In contrast, the OE covers are prone to leakage over time. Fleece block-off plates are an upgrade for the rear engine cover on your Duramax V8 and will stop the coolant leaks for good!
( 2 )
$55.00
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 )
$54.99
—
$66.99
Allstar Performance inline thermostat housings are made from durable aluminum and given a handsome black anodized finish. They fit GM-style thermostats and are to be used with 1.5 in. hose size.
( 1 )
$79.99
Fleece Performance thermostat housings have an auxiliary port with plug to allow you to customize your coolant routings. Two elbow options are available as direct replacements for specific model years of RAM trucks with 5.9L or 6.7L Cummins, and in specific Fleece coolant bypass kits.
Not Yet Reviewed
$89.99
Allstar Performance stainless steel inner wheel shields fit over most 5 x 5 hubs and inside 15 in. wheels. They help reduce mud build-up commonly found on the backside of the left rear wheel of dirt track cars.
Not Yet Reviewed
$86.99
Trans-Dapt's powdercoated water necks are perfect for the accurate restoration of older vehicles or for giving a new look to your engine.
( 4 )
$59.99
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
Find a place to fill from with these CSR inline radiator hose fillers. They provide a high positive fill point to help keep air out of your cooling system at all times. CSR's fillers are 6061-T6 billet aluminum machined and TIG-welded for durability.
( 8 )
$76.50
—
$97.95
On Sale
Fluidyne remote billet radiator filler necks combine beauty and performance under your hood. Built from billet aluminum with a highly polished or chrome finish, the 5 in. long universal replacements come in three diameters: 1 1/4 in., 1 1/2 in., and 1 3/4 in. The filler necks feature a 1/4 in. male hose barb fitting and a high-quality Fluidyne cap to top it off (16 psi).
( 2 )
$69.00
—
$99.00
$55.20
—
$79.20
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
—
$102.95
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.
( 137 )
$59.24
$53.32
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 )
$58.95
—
$89.95
$53.06
—
$80.96
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
$72.95
—
$107.95
$65.66
—
$97.16
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 )
$53.99
—
$98.99
Position your hose where you want it with CVR thermostat housings. These beautifully machined housings swivel 360 degrees for ease of installation. Crafted from T6-6061 billet aluminum, CVR thermostat housings are bright anodized in several finishes for a professional look under your hood. The flange is sealed at the manifold with an O-ring, eliminating the gasket, plus stainless steel hardware is included. You can count on high performance looks and operation with CVR thermostat housings.
( 67 )
$62.99
—
$108.99
MotoRad Spec-R️ integrated housing thermostats are perfect for high performance and racing applications. Designed and manufactured by a leading OE thermostat supplier to withstand high-pressure and high-horsepower demands, they are made with quality materials and carry the Spec-R logo. Keep your vehicle running at maximum cooling efficiency, whether on the track or on the street; select the Spec-R thermostat with integrated housing 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
Not Yet Reviewed
$52.99
—
$122.99
Mopar Replacement thermostats offer high-quality, along with an original equipment fit and function to keep your favorite Chrysler, Dodge, Plymouth, or Jeep rolling down any road you choose to travel. For a direct fit and reliable, safe operation, service your vehicle with genuine Mopar Replacement thermostats to maintain the "cooling" performance you've come to expect. Order the model designed for your specific application.
( 9 )
$55.99
These Moroso water neck bleeder kits allow you to remove air pockets from your cooling system. They include a filler neck housing with a 90 degree outlet for the upper radiator hose, an aluminum bleeder plate with a petcock valve, two mounting gaskets, and mounting hardware. The Moroso water neck bleeder kits can also be used with Moroso's expansion tanks for maximum cooling performance.
( 4 )
$85.99
Meziere water necks are available in a wide range of styles, colors, finishes, and fitment options. These replacements offer factory-style performance and great looks under your hood. Matching outlets are sold separately.
( 19 )
$51.85
Modal Header
Truck / SUV
Jeep®
Restoration
Stock Replacement
Late Model Muscle
Tools
Gifts, Clothing, & More
Circle Track
Street Rod
Powersports
Paint & Body
Marine
Jr Dragster
