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MERCURY GRAND MARQUIS Cooling & Heating

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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 )

$55.99

$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

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

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 )

$55.29

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

ACDelco Gold Cooling Fan Clutches

ACDelco Gold cooling fan clutches are high-quality aftermarket replacements for your worn-out original. Fan clutches control the speed of the radiator fan, based on the temperature of the air as it passes through the radiator fins. They're manufactured to meet or exceed your expectations for fit, form and function. Order the model recommended for your vehicle.

4.33 out of 5 stars ( 24 )

$58.99

Tuff Stuff Performance Standard-Volume Water Pumps

Tuff Stuff Performance offers standard-volume mechanical water pumps for a thousands of popular vehicle-specific applications. They're offered in a variety of styles, rotations, materials, finishes, and pilot diameters. Order the replacement model recommended for your vehicle application.

4.12 out of 5 stars ( 17 )

$113.99

$123.99

GMB OE Replacement Water Pumps

GMB OE replacement water pumps are precision-built and balanced to meet or exceed original equipment specifications. They're assembled with heavy-duty steel bearings—and are lubricated and sealed for life. Order the model designed for your vehicle application. All GMB water pumps are factory-tested for quality and include the following features: * High-flow design for long-lasting, efficient cooling * Designed for OE fit and performance * Precision-ground shaft and hub accept OE fan clutches perfectly * OE-quality forged housing is specially formed to ensure maximum coolant flow * Pressed-on impeller increases water flow * Unique no-sealant-required gasket makes installation fast and easy * Unitized seal protects bearings for long life and leak-free performance * Factory-sealed, precision-ground, one-piece bearing assembly

4.39 out of 5 stars ( 512 )

$66.99

$87.99

Hayden Fluid Coolers

Hayden Automotive offers fluid coolers in a variety of sizes and materials. These units help to extend the life of your vehicle by lowering operating temperatures. Coolers are available for many types of fluids, including transmission, hydraulic, and power steering; as well as engine coolant, diesel fluid, and engine and differential oil. Order the universal or vehicle-specific model needed for your application.

4.43 out of 5 stars ( 167 )

$51.99

$56.99

Four Seasons Rapid-Cool Transmission Oil Coolers

Four Seasons Rapid-Cool transmission oil coolers are compatible with OEM cooler systems and 100 percent pressure-tested to 150 psi for quality assurance. They're engineered to provide years of trouble-free operation, backed by over 50 years of mobile A/C experience. The coolers are available in different sizes and fin quantities. Fix it once and fix it right with a Four Seasons Rapid-Cool transmission oil cooler.

5.0 out of 5 stars ( 3 )

$64.99

$67.99

US Motor Works Mechanical Water Pumps

All US Motor Works mechanical water pumps are designed and tested to meet or exceed OEM specifications. Using advanced research, they include efficient impellers, case-hardened bearings, and unitized seals to provide optimum cooling with performance and longevity. Every US Motor Works mechanical water pump is supplied with a quality mounting gasket and other accessories (seals/gaskets) necessary to properly complete the installation. US Motor Works mechanical water pumps feature: * Case hardened bearings that meet specific radial torque and axial load requirements; they have higher load capacities, are tough on the outside, yet flexible on the inside … ideal for withstanding imbalance or vibration * All mounting surfaces are CNC-machined for easy installation, precision sealing, long component life, and maximum efficiency * Inspected and tested to ISO: 9001:2015 standards * Industry-leading metal impeller integration; metal impellers handle more torque and higher temperatures than plastic to improve high-rpm performance and combat failure caused by broken or distorted impellers * Highly durable metal impellers are also chemical-resistant, withstand variables in high-mileage engines, and are better for transit and storage

4.14 out of 5 stars ( 49 )

$72.99

Maradyne Pacesetter Medium-Profile Electric Fans

Maradyne Pacesetter medium-profile electric fans deliver economic efficiency for most any vehicle. Whether your vehicle is high performance or a daily driver, these S-blade designed fans will meet your needs. They are reversible, quiet, and feature glass-filled nylon construction with non-vented, medium-duty motors. They are available in a choice of diameters and each includes 90 degree mounting feet and a pigtail connector. Maradyne Pacesetter medium-profile electric fans offer a perfect fit for many projects and wallets.

5.0 out of 5 stars ( 2 )

$63.15

$90.39

Mishimoto Thermostats

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.

4.44 out of 5 stars ( 73 )

$68.95

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 )

$51.99

Four Seasons Fan Clutches

Is your engine running too warm or is your A/C performance failing? It may be time for a new fan clutch. Improve your cooling system's efficiency by engaging the fan when additional cooling is required. Four Seasons fan clutches are offered in clockwise and counterclockwise rotational patterns, depending on the application.

4.18 out of 5 stars ( 67 )

$51.99

$58.99

Clearance

Universal Air Conditioner Blower Motors

Universal Air Conditioner's line of electrical components include HVAC blower motors—quality-built to OEM specifications for accurate fit and high-efficiency function as your factory component to help you restore your A/C system back to its proper operation. These units are available in different models, some may include both motor and fan (wheel). With UAC's extensive quality control procedures and affordable pricing, you can be confident you're getting a premium product when you decide to purchase the recommended model designed for your vehicle application. Additional features and benefits: * Consistent quality, competitive cost, and a large product range * Helps maintain a desired temperature inside your car * Some units come with fan wheel, depending on model * Made of durable materials, ensures reliable performance * All units are pressure tested to ensure product quality

5.0 out of 5 stars ( 2 )

$57.99

$106.99

Dayco Water Pumps

Backed by an industry-leading 125,000 mile warranty, Dayco's water pumps are available in cast aluminum or iron version and are offered in application-specific designs for more than 200 million vehicles in operation. Meeting the highest standards, they are put to the test utilizing a unique failure mode analysis for continuous improvement. In addition, Dayco controls every aspect of the manufacturing process, from raw material to finished product of these OE-equivalent water pumps. Features: * Durable one-piece design * Improved impeller for enhanced performance * Case-hardened roller bearings that allow for flex without breaking * Superior gaskets and unitized seals to prevent leaks

3.67 out of 5 stars ( 3 )

$78.99

Four Seasons Air Conditioning Compressor Clutches

You just discovered that the compressor clutch on your vehicle's A/C unit is failing, or worse, it no longer works at all. Now what? Fix it today with a brand-new or remanufactured Four Seasons air conditioning compressor clutch. Coated to prevent corrosion, these OE-matching replacements restore proper function to your temperature control system. Four Seasons' products are engineered and tested to provide years of trouble-free operation. They are backed by over 50 years of mobile A/C experience, fix it once and fix it right with Four Seasons. Features include: * Vehicle-specific applications * Restores the working core of your A/C system * Alerts your compressor to create high pressure * Crafted according to stringent OE standards * All pulleys and hubs are machined and trued to ensure an even surface * Every coil tested for proper ohms * All mounting hardware included * Four Seasons air conditioning compressor clutches carry a 120-day warranty

4.28 out of 5 stars ( 29 )

$78.99

$107.99

CSF Radiators

CSF radiators are offered in the industry's widest variety, servicing thousands of vehicle-specific and universal applications … including every brand from Acura to Volkswagen. Whether your radiator is copper-brass, plastic-copper-brass, plastic-aluminum, or all-aluminum, CSF has you covered with the same materials and style as OE. CSF manufactures the highest quality aftermarket replacement radiators, with the strongest and most efficient components available in the industry. All CSF radiators undergo a rigorous testing process in their state-of-the-art testing lab. CSF's procedures and requirements set the bar for cooling system reliability and performance: * Individually leak tested * Vibration-cycle tested * Thermal-cycle tested * Wind tunnel tested for optimal radiator core cooling efficiency * Burst pressure and impulse-cycle tested for strength * Salt spray tested for corrosion protection * 10 ft. box drop test to ensure packaging protection * 30-point fitment inspection on critical dimensions to ensure drop-in fit with no modifications (where applicable)

4.23 out of 5 stars ( 93 )

$105.99

Four Seasons Heater Cores

Four Seasons heater cores feature heavy-duty construction for durability and quality engineering to help provide the original factory fit, form, and function. All units include OE-style hardware for installation ease and receive independent testing for proven quality and performance. Keep your older vehicle operating like new with the replacement Four Seasons heater core designed to fit your vehicle.

3.92 out of 5 stars ( 13 )

$50.99

$70.99

GMB Replacement Fan Clutches

Have you noticed an uptick in your engine temperature? The fan clutch on your vehicle regulates the airflow by controlling the fan speed—maintaining the engine's cooling system. Controlling fan speed will minimize power loss, realize optimal temperature level, and enhance quietness. GMB designs and manufactures these fan clutches to strict OEM tolerances, ensuring years of reliable service. Order the replacement recommended for your vehicle and engine application.

4.83 out of 5 stars ( 6 )

$54.99

$64.99

CSF Air Conditioning Condensers

CSF air conditioning condensers use materials designed to match original equipment manufacturer specifications and provide the fit, quality, and performance of the original equipment condenser. They are available in advanced technology parallel flow, sub-cooling, and serpentine designs to cover both R12 and R134A refrigerants. CSF's ever expanding A/C condenser product line includes hundreds of condenser models made to the same high standards of their premier radiator line.

4.43 out of 5 stars ( 7 )

$104.99

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