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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.
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$29.11
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$31.46
$21.83
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$28.31
On Sale
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.
( 114 )
$31.48
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$63.69
$27.09
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$57.35
On Sale
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.
( 25 )
$36.74
$33.07
On Sale
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.
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$29.11
$21.83
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$26.20
On Sale
Earl's Performance adjustable coolant crossover tubes simplify the plumbing of a remote mounted electric water pump by eliminating Ts, Ys, and extra hose ends. The design of these special crossover tubes allows for adjustable length—and for use as a coolant inlet or outlet on your engine. They're constructed from billet aluminum with a black anodized finish.
( 1 )
$318.95
$175.95
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.
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$28.95
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$101.95
$26.06
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$91.76
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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$18.94
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$59.24
$17.05
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$53.32
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
On Sale
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
$46.75
On Sale
DeWitts pivoting water necks are built from diecast aluminum. The O-ring sealed water necks rise at an angle and can be rotated for best possible radiator hose access. They include hardware necessary for installation.
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$44.99
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$46.99
$40.49
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$42.29
On Sale
Finish off your intake manifold with one of these Weiand swivel water necks. They'll provide you with good looks, excellent quality, and precise fit at a great price. The water necks are manufactured from high-quality aluminum and come in your choice of polished, chrome plated, or black powdercoat finishes. Weiand water necks are also available in four different outlet configurations—so you can get the right fitment for your cooling system. All water necks include an O-ring seal, plate, and hardware for easy installation.
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$36.31
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$43.02
$19.97
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$23.66
On Sale
Racing Automotive Group water outlet restrictor kits allow you to limit the coolant flow leaving the engine in order to control the amount of heat absorbed by the coolant itself. Limit the flow with these three round aluminum plates with 5/8 in., 3/4 in., and 1 in. I.D. holes. Just mount the appropriate plate under the water outlet on the intake manifold for a simple temperature control solution. Restrictor kits are available for a wide range of year/make and engine applications from the 1950s and up.
Not Yet Reviewed
$9.99
$8.99
On Sale
Racing Automotive Group offers polished aluminum water necks for a wide range of year/make and engine applications. The swivel manifold filler necks easily adjust the angle. These replacements come with an O-ring seal and hardware for installation.
Not Yet Reviewed
$49.99
$44.99
On Sale
Racing Automotive Group offers water neck block-off plates for a wide range of Chevy V8 engine applications from the 1950s and up. The 1/4 in. aluminum plates provide an excellent base to drill or weld your own fitting in place. They include a gasket two pre-drilled mounting holes to ensure a perfect fit to the intake manifold.
Not Yet Reviewed
$14.99
$13.49
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