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HUMMER Cooling & Heating

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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 ( 360 )

$30.99

$49.99

On Sale

Mr. Gasket LS Thermostats

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.

4.12 out of 5 stars ( 25 )

$36.74


$33.07

Lingenfelter Performance Engineering Thermostats

Lingenfelter Performance Engineering offers premium-quality thermostats for several applications. They're all direct drop-ins with no modifications needed and each includes the rubber seal. Reduce coolant temperature, produce more horsepower, and improve performance with Lingenfelter Performance Engineering thermostats.

3.93 out of 5 stars ( 142 )

$28.45

$38.90

Summit Bucks

ACDelco GM Genuine Parts Air Conditioning Replacement Parts

To help keep you cool in hot weather driving, ACDelco offers GM Genuine Parts air conditioning replacement parts. Built to fit nearly all GM vehicles on the road today, they include a complete range of components from accumulators, receiver driers, blower motors, compressors, condensers, filter, evaporators, and engine fan cooling motors. On a hot day, there is nothing like a rush of cold air. Make sure that refreshing air keeps flowing, even on the hottest of days, with ACDelco GM Genuine Parts.

5.0 out of 5 stars ( 3 )

$49.99

MotoRad Spec-R Racing Thermostats

In racing, precision is everything--from the driver's skill to each component under the hood. A racing engine thermostat isn't just about maintaining a lower temperature; it must endure the relentless demands of high-flow, high-pressure environments that standard parts simply can't handle. MotoRad Spec-R racing thermostats are engineered to offer rapid response and precise temperature control under extreme conditions, allowing optimal engine performance without compromise. They are manufactured to provide durability, withstand intense vibrations, and maintain reliability at every stage, ensuring that racers get consistent performance, lap after lap. Run your vehicle with maximum cooling efficiency; select the Spec-R racing thermostat 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 Note: Gaskets/seals may or may not be included.

5.0 out of 5 stars ( 1 )

$23.99

$37.99

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.

4.24 out of 5 stars ( 177 )

$23.99

$48.95

MotoRad Spec-R Integrated Thermostat Housings

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

Four Seasons Deslugger Compressor Clutch Timers

Four Seasons Deslugger compressor clutch timers extend A/C compressor life by eliminating liquid slugging. Low mounted compressors collect oil and liquid refrigerant when a vehicle sits. The result can be hydraulic lock with catastrophic damage on initial compressor engagement. These clutch timers solve the liquid slugging problem by pulsing the compressor clutch multiple times during initial engagement. By gradually engaging the compressor, trapped liquid is gently moved out. Once the brief deslugging function is complete, the compressor reverts back to normal cycling operation.

1.0 out of 5 stars ( 1 )

$47.99

Reach Cooling Heater Cores

REACH Cooling is a global leader in the manufacture and distribution of aftermarket cooling products for automotive, heavy truck, and industrial applications. Their wide product range covers more than 95 percent of popular automotive and light trucks. REACH offers aluminum heater cores in a variety of sizes, finishes, and inlet/outlet options. Order the OE-style replacement model recommended for your vehicle.

1.0 out of 5 stars ( 1 )

$39.99

Dorman Mechanical Fans

Dorman mechanical fans are just what you need to keep your ride cool. So, if your stock fan has given up the ghost, replace it with quality components by Dorman to restore proper function.

4.26 out of 5 stars ( 34 )

$43.95

Summit Bucks

ACDelco Mechanical Water Pumps

ACDelco mechanical pumps are ideal replacement components for many vehicles on the road today. They're manufactured to meet and exceed OE specifications for fit and performance. The pumps are available in many styles, materials, and other options. Order the model recommended for your application. Features and benefits include: * Available for practically all GM vehicles as well as a wide range of non-GM vehicles * Completely pressure-tested for reliable, leak-free performance * Coated seals support seal longevity and durability * Heat-treated shaft assemblies and impellers provide superior strength and durability * High-quality bearings are permanently sealed and lubricated for greater durability and long life * Uniform wall sections and smooth coolant-flow cavities for efficient operation * Cast iron, aluminum, or steel design, depending on vehicle

4.71 out of 5 stars ( 448 )

$47.99

Four Seasons Blower Motors

Four Seasons replacement blower motors are available for a variety of applications. These motors allow you to supply the correct volume of air to the heating and/or cooling system of your vehicle. These motors help to keep you warm or cool during all four seasons!

4.42 out of 5 stars ( 88 )

$47.99

Four Seasons HVAC Door Actuators

Four Seasons HVAC door actuators are key components to maintaining the proper climate inside your vehicle. The actuator motors control the internal vent that allows the correct mix of cold and hot air for your desired comfort. These replacement units are offered in a variety of actuator types to control temperature blend doors, air recirculation doors, and floor mode valves—and they're available for a wide range of cars, trucks, and vans. The OE-style connectors feature high-quality contacts to ensure conductivity. Issues with your heat and air conditioning could mean you simply need a new HVAC door actuator from Four Seasons.

5.0 out of 5 stars ( 3 )

$32.99

MotoRad Ignition Coils

MotoRad ignition coils are engineered to maximize spark voltage duration for optimal engine performance. They're designed to perform under severe operating conditions and protect against extreme heat. All coils meet or exceed OEM specifications. Order the replacement ignition coils recommended for your vehicle. Additional product details: * Heat-resistant magnet produces max voltage output at all engine speeds * Graphite-infused platinum connections resist corrosion and offer superior conductivity and durability * Primary and secondary windings made with ETP-grade copper provide superior temperature protection and voltage conductivity * Pre-applied dielectric grease for easy installation

Not Yet Reviewed

$26.99

$63.99

Four Seasons Air Conditioning Installer Kits

Four Seasons offers air conditioning installer kits for a variety of vehicles. The components are engineered and tested to provide years of trouble-free operation. All components are designed to meet or exceed OE specifications for fit and performance with precision-machined fittings and connections to ensure system sealing. All required gaskets and seals are included, as well as the OE-specified system lubricant. Backed by over 50 years of mobile A/C experience, fix it once and fix it right with the Four Seasons air conditioning installer kit best suited for your application.

5.0 out of 5 stars ( 1 )

$34.99

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

3.5 out of 5 stars ( 2 )

$47.99

$51.99

On Sale

JET Low Temp Stats

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.

4.28 out of 5 stars ( 137 )

$59.24


$53.32

TYC Blower Motor Assemblies

Superior grade components used in the production of TYC blowers are designed for drop-in, plug-in ease of installation. Motor tests ensure comfortable air movement without excessive noise. Utilizing premium grade magnets and armatures for endurance, each unit is fitment tested for drop-in installation. TYC has a wide selection of blower assemblies covering the most popular vehicles. Choose the assembly designed for your vehicle.

3.0 out of 5 stars ( 1 )

$35.99

$45.99

Universal Air Conditioner Pressure Switches

The pressure switch controls the on/off function of the A/C compressor, the unit that pumps refrigerant through the system. You can make sure you stay cool by replacing failing switches with a new one from UAC. Universal Air Conditioner pressure switches will maintain the proper operation of your air conditioning system to keep producing cold air.

4.0 out of 5 stars ( 3 )

$21.99

Summit Bucks

ACDelco GM Genuine Parts Air Conditioning Orifice Tubes

Air conditioning orifice tubes can become clogged and prevent refrigerant and oil from reaching the vehicle's A/C compressor. Restore your A/C performance with ACDelco GM Genuine Parts air conditioning orifice tubes. They're manufactured to GM original equipment specifications to meet or exceed your expectations for fit, form, and function.

4.6 out of 5 stars ( 5 )

$26.99

Clearance

Agility Auto Parts Heater Cores

Agility Auto Parts offers a complete line of automotive heater cores, covering 94 percent of all North American vehicle. They provide value in several ways, including increased thermal performance and resistance to corrosion. The HVAC cores use enhanced design features, such as the latest fin and tube technology and design standardization for maximum availability. These certified heaters meet or exceed OE specifications—and are "drop in fitment" checked in the actual vehicles HVAC heater module, so they're ready to be installed right out of the box. Agility Auto Parts heaters are engineered and manufactured under ISO TS16949 quality systems and are 100 percent leak-tested.

3.9 out of 5 stars ( 20 )

$48.99

Flex-A-Lite Billet Aluminum Radiator Caps

A Flex-A-Lite billet aluminum radiator cap will make a beautiful upgrade under the hood. These caps are rated at 22 psi and fit nearly all factory and aftermarket radiators from 1973 until the present.

4.0 out of 5 stars ( 1 )

$26.99

Clearance

US Motor Works Thermal Fan Clutches

Designed with quality and performance in mind, US Motor Works thermal fan clutches are engineered and tested to meet or exceed OEM specifications. To produce truly superior fan clutches, US Motor Works uses only the highest quality materials and, as an ISO: 9001:2015 certified company, consistency and quality is verified. Features and benefits of US Motor Works thermal fan clutches: * High-load bearings increase durability and improve wear resistance … for longer life * Improved shaft design for greater strength and enhanced load capacity * Smooth surfaces reduce stress risers * Lowered material stresses during assembly * Full surface contact for all interference fits * Staked end for anti-rotation * CNC-machined, tapped, and drilled mounting surfaces help prevent leaks * Assured fitment with mating components * Select fan clutches include a molded fan

5.0 out of 5 stars ( 5 )

$51.99

MotoRad UltraStat Thermostats

MotoRad offers UltraStat thermostats for a wide range of car, truck, and van applications from the 1980s and up. Their heavy-gauge stainless steel components provide increased reliability and long-lasting durability. The thermostats feature exclusive BLVT Valve Technology to minimize thermal shock to cooling system components. Select the model and opening temperature rating recommended for your vehicle. Additional details: * Stainless steel thermal element for unmatched corrosion resistance * Revolutionary REAX wax mixture provides quicker reaction time * AccuSpring design for stable temperature control and increased cabin comfort

4.25 out of 5 stars ( 4 )

$29.99

$35.99

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