1984 MERCURY Cooling & Heating

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.

4.28 out of 5 stars ( 366 )

$5.99

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$9.99

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 ( 161 )

$38.99

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.

4.47 out of 5 stars ( 49 )

$22.95

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$24.95

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.

3.98 out of 5 stars ( 236 )

$29.11

$22.38

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$32.25

Maradyne Mach Two Series Electric Fans

Maradyne Mach Two series truck electric fans feature dual 225 W high performance IP68 sealed motors attached to dual 11 in. diameter 5-blade fans to put out over 2,500 cfm of airflow. They have all glass-filled nylon construction and include dual harnesses for an easier installation. The fans are available with different mounting bracket positions, so you can match up with your radiator mounting style.

4.94 out of 5 stars ( 17 )

$311.05

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$311.84

Hayden Rapid-Cool Transmission Oil Coolers

Hayden Rapid-Cool transmission oil coolers take the heat, so your vehicle won't! Over 14-million transmissions fail every year, and 9 out of 10 are from overheating. Rapid-Cool's unique plate and fin design combines cooling expertise and space efficiency; multiple sizes are available. Their patented internal turbulation provides better heat transfer. Lower your operating temps with a pioneer in cooling: Hayden!

4.7 out of 5 stars ( 166 )

$44.99

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$53.99

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.

4.67 out of 5 stars ( 212 )

$33.99

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$36.99

Mishimoto Electric Fan and Shroud Kits

Improve engine cooling performance with Mishimoto electric fan and shroud kits! These kits are a direct OEM fit, without the excess weight or bulk of standard OEM shrouds. Mishimoto electric fan and shroud kits include Mishimoto slim electric fans and durable, lightweight aluminum shrouds that safely secure the fan blades from damaging vital engine components. Don't let their light weight and compact size fool you, though--Mishimoto electric fan and shroud kits flow a massive amount of air to your aluminum radiator, while driving out excess heat.

3.65 out of 5 stars ( 65 )

$213.95

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$277.95

Flex-A-Lite Wide Blade Flex Fans

Flex-A-Lite belt-driven Flex fans feature an aggressive pitch blade design to move the most air at idle. Plus the Flex blades will flatten out at high engine rpm to reduce drag--improving horsepower and gas mileage. Specs for Flex-A-Lite Flex fans: * Stainless steel (6) blades with red stars * Stainless steel (5 or 6) blades with blue stars * Stainless steel blades with gold star (reverse rotation only) * Several diameters to choose from * Mounting pattern: 5/8 in. pilot, 1 3/4 in. to 2 1/2 in. bolt pattern * Projected width of 2 1/4 in.

4.63 out of 5 stars ( 54 )

$89.99

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$98.99

Summit Racing™ Performance Fit Aluminum Radiators

Summit Racing™ performance fit radiators feature a quality aluminum core and are designed to fit your vehicle. They offer improved heat dissipation over OEM radiators, and some models are available with a built-in automatic transmission cooler. Modifications may be required when installing Summit Racing™ performance fit radiators. Designed for use with electric fans, the OEM fan shroud is not compatible with these radiators in most applications.

4.33 out of 5 stars ( 1121 )

$277.99

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$389.99

Four Seasons Fan Mount Pull Tie Kits

Four Seasons fan mount pull tie kits allow for the easy installation of your fan. These black nylon ties secure your fan and include holders and pads to protect your radiator. Mount your fan right with Four Seasons fan mount pull tie kits.

4.74 out of 5 stars ( 54 )

$4.99

Derale Stacked Plate Fluid Coolers

Derale stacked plate fluid coolers have more surface area than tube and fin coolers, giving you more efficient heat extraction. The units feature embossed turbulator plates and durable, brazed aluminum construction. They are equipped with AN male ports and are also available with an OEM-spec, high-temperature oil hose with swedged hose ends. Derale Performance coolers have pre-drilled mounting brackets and include hardware where noted.

4.66 out of 5 stars ( 114 )

$139.88

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$221.74

Meziere 300 Series Electric Water Pumps

Meziere 300 Series electric water pumps are the Big Daddy of electric water pumps. They're capable of flowing 55 gpm--enough for a 600 hp oval track car or a 2,200 hp Pro Mod. They have larger internal passages and heavy-duty motors and are available in radiator, remote mount, or engine mount versions. These pumps feature CNC-machined aluminum housings, epoxy coated motor windings, an RF suppression circuit, and a one-piece, carbon-ceramic seal.

4.71 out of 5 stars ( 83 )

$696.09

Summit Racing™ Classic OEM Radiators

Summit Racing™ classic OEM radiators are designed to give you top performance cooling, while fitting your vehicle's mounts, so your ride can have a new radiator without having to modify brackets and fittings. The radiators are available in various styles and sizes to best fit your application or engine bay design.

4.38 out of 5 stars ( 488 )

$354.99

Hayden Electric Fan Controls

Make sure that your cooling fans turn off and on with Hayden electric fan control kits. These Hayden automotive electric fan kits are designed to allow your electric fan to turn off and on at certain temperatures. Hayden offers these electric fan kits for single or dual fan applications. All of these Hayden electric fan kits are compatible with their own fans and original equipment cooling fans. They include all necessary wiring, relays, circuit breakers, sending units, hardware for installation, and detailed instructions.

3.94 out of 5 stars ( 194 )

$24.99

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$37.99

Maradyne Champion Series Electric Fans

Maradyne Champion series electric fans are great for use on remote transmission coolers, oil coolers, or intercoolers. They feature a reversible motor, so they can be used as a puller or pusher type, depending on your space constraints. They use sealed motors, perfect for harsh conditions, including off-road, and they can be sprayed clean without moisture entering the motor. The Maradyne Champion series electric fans have a glass-filled nylon shroud and blade and are high-temperature and impact-resistance for harsh underhood temperatures and greater resistance to flying road debris.

4.8 out of 5 stars ( 65 )

$154.69

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$162.06

Hayden Electric Fans

As a primary cooling source, Hayden Automotive electric fans slightly increase horsepower and fuel economy when replacing fan clutches and fan assemblies. These thin fans are manufactured with reversible blades for pusher and puller operation. Hayden uses high-quality, long-life electric motors to ensure performance and durability. They come available in 10, 12, 14, and 16 in. diameters.

4.58 out of 5 stars ( 12 )

$68.99

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$79.99

Derale 7000 Series Tube and Fin Transmission Coolers

Derale 7000 Series tube and fin transmission coolers offer the best quality and value in a fluid cooling unit. A variety of sizes are available for maximum application coverage. Some performance kits will include OEM-spec high-temperature oil hose, nylon mounting rods and metal mounting strips, an Insta-Dapt 2-way radiator adapter, stainless steel hose clamps, and mounting and installation instructions.

4.78 out of 5 stars ( 95 )

$72.68

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$82.63

On Sale

Frostbite Electric Water Pumps

Frostbite electric water pumps are a must for high performance vehicles where horsepower comes at a premium. They eliminate common issues found in traditional mechanical water pumps--parasitic horsepower loss, heavy cast housings, and impeller drag. Frostbite electric aluminum water pumps are available in black and polished finishes with offerings for popular engine platforms. When it comes to keeping your cooling system performing at peak levels, make it Frostbite! Features include: * Available with cast or billet aluminum housings * Free-up lost horsepower resulting from the use of mechanical pumps * Frostbite logo laser-etched for performance look * Ford applications available with block-off plates * Kits come complete with gaskets, wiring pigtail, and mounting hardware

3.2 out of 5 stars ( 10 )

$349.95

$197.36

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$562.95

Summit Racing™ Radiator Caps

Summit Racing™ offers replacement radiator caps for a variety of applications. These recovery-style caps feature a heavy-duty design built to handle the pressures of street/strip use. They're compatible with many engine designations, and are available in pressure ranges up to 26 psi. Order the cap preferred for your engine bay.

4.61 out of 5 stars ( 94 )

$5.99

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$6.99

Dorman Thermostat Housings

Replace your stock thermostat housing with new parts from Dorman. These quality replacement components offer solution upgrades for your coolant system, and they are available for several applications. Don't wait for your engine to overheat or for the check engine light to illuminate--upgrade to reliable, OE-fitting thermostat housings from Dorman.

4.22 out of 5 stars ( 183 )

$11.99

Derale Heavy-Duty Flex Fans

Derale heavy-duty flex fans generate maximum airflow at low rpm and decrease resistance at high rpm. They also improve performance and provide better fuel economy. The OEM-quality, heavy-duty steel hubs, aerospace-grade stainless steel blades and rated up to 10,000 rpm create a durable fan that lasts. For top-quality underhood cooling accessories, trust the expertise of Derale Performance.

4.71 out of 5 stars ( 122 )

$97.58

GMB High Performance Water Pumps

GMB high performance water pumps are designed to combat engine overheating associated with higher performance and load applications. They feature a precision-ground, heavy-duty steel bearing that's completely sealed and lubed for life. These replacement pumps have a specially modified, higher performance impeller that eliminates cavitation at all rpm—and maintains maximum volumetric flow of coolant throughout the engine. Order the model recommended for your application. Additional features: * Increase pump pressure up to 300 percent * Eliminate steam pockets trapped inside the engine block * Reduce engine temperature by 15-30 degrees * Help increase horsepower

4.3 out of 5 stars ( 241 )

$62.99

Derale Flex Fan Standard Spacers

Derale Performance flex fan standard spacers feature extruded aluminum construction. Mounting hardware is included.

4.42 out of 5 stars ( 114 )

$23.53

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$29.64