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MERCURY GRAND MARQUIS Cooling & Heating

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Results 1 - 24 of 121

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 ( 358 )

$5.99

$10.99

ACDelco Air Conditioning Compressors

ACDelco air conditioning compressors are an ideal choice for a custom hot rod project or standard OEM replacement. They're available in new or cost-alternative remanufactured units for fitment on a wide range of applications. The heart of any air conditioning system is the compressor—their primary function is to compress and transfer refrigerant gas. The intake side draws in refrigerant gas from the outlet of the evaporator. Once condensed to a gas, it's then discharged to the condenser, where it can transfer the heat that is absorbed from the inside of the vehicle.

4.15 out of 5 stars ( 88 )

$231.99

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 ( 159 )

$43.99

$58.99

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.

4.61 out of 5 stars ( 49 )

$86.99

$95.99

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.

4.5 out of 5 stars ( 44 )

$22.95

$24.95

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.

4.93 out of 5 stars ( 15 )

$346.86

$372.93

Edelbrock Victor Series High Performance Street Mechanical Water Pumps

Get maximum cooling for the street or track. Edelbrock Victor Series high-volume water pumps are designed for maximum flow and equal coolant distribution in street cars, race cars, tow vehicles, and motor homes. The aluminum pumps have CNC-machined housings with special one-way internal passages that flow more coolant at higher velocities, even at low engine speeds. The CNC-machined impellers are larger than other impellers and have curved vanes that produce greater flow with less cavitation. Other features include heavy-duty roller bearing assemblies built to withstand higher torsional loads, billet steel hubs, leakproof seals, and gaskets. Most Victor Series pumps are available in your choice of satin, black, and polished finishes, or EnduraShine.

4.28 out of 5 stars ( 179 )

$321.95

$553.95

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.

3.97 out of 5 stars ( 234 )

$29.11


$21.83

$31.46

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.

4.83 out of 5 stars ( 63 )

$176.05

Maradyne Jetstreme Electric Fans

Maradyne Jetstreme electric fans feature a low-profile design to allow for turbo or supercharger installations. They use a sealed motor tested in accordance with DIN EN 60529 and are dust and waterproof to IP68. The fans utilize an S-blade design for quieter operation and have a rubber seal that eliminates vibration contact and increases airflow. Maradyne Jetstreme electric fans have all glass-filled nylon construction for maximum durability.

4.88 out of 5 stars ( 17 )

$218.58

$463.04

On Sale

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.

4.4 out of 5 stars ( 440 )

$443.99

Summit Racing™ Cast Iron Water Pumps

Some like chrome, some like powdercoat, some like nothing at all. No matter your preference, We have you covered with a big selection of Summit Racing™ mechanical cast iron water pumps. We have short and long pumps, standard and high-flow models, and a selection of finishes to meet your needs.

4.2 out of 5 stars ( 224 )

$99.99

$101.99

Four Seasons Air Conditioning Compressors

Four Seasons air conditioning compressors are made using state-of-the-art technology and quality assurance processes. Their compressors are carefully assembled and then undergo a battery of stringent quality tests, including noise, function, leak, and pressure testing. You can feel confident that you're purchasing a high-quality product from Four Seasons.

4.45 out of 5 stars ( 164 )

$147.99

$342.99

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.

4.73 out of 5 stars ( 51 )

$2.99

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.

4.23 out of 5 stars ( 175 )

$13.99

$21.99

Motorcraft Mechanical Water Pumps

Motorcraft mechanical water pumps use precision bearings to deliver long and efficient performance. These replacement units are available for a variety of vehicle-specific applications. Features include: * Carefully made impellers to meet OE pumping requirements * Seal designs that use OE-specification seats * Strong cast iron, aluminum die-cast, or composite housings * Bearing housings designed to meet OE load requirements * Precision-ground bearings * Hubs accurately located for proper belt alignment

4.38 out of 5 stars ( 16 )

$61.99

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.

3.69 out of 5 stars ( 113 )

$34.72


$22.57

$55.29

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.

4.7 out of 5 stars ( 86 )

$5.99

$6.99

Hayden Rapid-Cool Transmission Oil Coolers with Thermal Bypass

Hayden Rapid-Cool transmission oil coolers with thermal bypass are ideal for colder climates. With their patented internal pressure bypass design, they will help your transmission reach optimum operating temperature quickly by routing the fluid through the bypass channel of the cooler until fluid temperature increases. Reaching operating temperatures faster improves fuel economy and reduces friction of internal components. Hayden's design incorporates an integrated valve that eliminates the need for external valves and additional plumbing at installation. Features and benefits: * Bi-directional flow * 33 percent more efficient than traditional coolers * High efficiency louvered fins and special oil turbulators * 100 percent brazed aluminum construction offer superior strength and reliability * Available in sizes to fit a wide range of applications from compact cars to Class "A" motorhomes * All cooler brackets come pre-drilled for easy mounting * All hardware necessary for installation * 100 percent pressure-tested at the factory ensuring quality and performance

4.91 out of 5 stars ( 11 )

$57.99

$72.99

Chevrolet Performance Thermostats

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?

4.3 out of 5 stars ( 10 )

$55.99

PRW High Performance Mechanical Water Pumps

PRW High Performance mechanical water pumps are engineered to deliver increased water flow faster. These super velocity pumps significantly improve cooling for all street, high performance, and racing applications. The low pressure-injected, A356 aluminum alloy pump bodies are complemented by a precision, high-flow cast iron impeller design. Pressure-balanced water passages equalize flow and minimize engine hot spots at any speed. PRW High Performance mechanical water pumps are excellent alternatives for not only racers, but also trucks, towing, and motorhome applications. Order the model recommended for your specific vehicle and engine size. Features, items, and specs: * 35 gpm at 4,000 rpm with minimal cavitation and proportional increased flow rates at 5,000+ rpm * Aircraft industry tolerances * Heavy-duty 0.75 in. diameter steel shafts * Billet steel hubs and shielded-seal roller ball bearings * Back plate O-ring sealed for most applications * System Basis Chip (SBC) applications include adjustable hardware

4.0 out of 5 stars ( 29 )

$124.87

$267.71

Maradyne Mach One Series Electric Fans

Maradyne Mach One series electric fans feature a quiet, reversible 225 W motor, so they can be used as a puller or pusher, depending on your space constraints. They have a glass-filled nylon shroud and blade and are high-temperature and impact-resistant for harsh underhood temperatures and greater resistance to flying road debris.

5.0 out of 5 stars ( 1 )

$285.53

$370.40

Proform Electric Water Pumps

Proform electric water pumps eliminate unnecessary weight, as well as the impeller-induced drag experienced with mechanical pumps at high rpm. Proform pumps crank out up to 35+ gpm and deliver the cooling that can mean the difference between a win and second place! Made of durable, lightweight diecast aluminum, they're epoxy coated for corrosion resistance, and can be used for competition or street applications. The replacement pumps are available in several size and color options for vehicles from the 1950s and up.

3.69 out of 5 stars ( 102 )

$172.99

$266.99

Hayden Fan Clutches

Do you need a replacement fan clutch? These fan clutches by Hayden Automotive are manufactured to ensure performance and durability. Hayden offers thermal, non-thermal, and heavy-duty series fan clutches that meet strict factory guidelines. All Hayden Automotive fan clutches should only be used on the specific applications for which they are cataloged. Use of the wrong fan clutch may result in poor cooling, excess noise, reduced mileage, and/or fan clutch failure.

4.51 out of 5 stars ( 443 )

$43.99

$51.99

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