2020 GMC Sierra 2500 HD Engine Cooling Parts

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Keep Your 2020 GMC Sierra 2500 HD in Top Shape with Quality Engine Cooling Parts

Whether you’re repairing or upgrading your Engine Cooling Part, using high-quality parts is key to keeping your 2020 GMC Sierra 2500 HD looking sharp and performing at its best. At Advance Auto Parts we carry a wide selection of dependable options, including Radiator Fan Clutch, Coolant Reservoir Caps, and Thermostats. Whether you’re replacing a damaged part or enhancing your truck’s style and protection, you’ll find exactly what you need to get the job done right.

Top-Rated Engine Cooling Parts from Trusted Brands

Looking for a reliable Engine Cooling Part? We’ve got you covered with options from brands you know and trust like Carquest Premium, Dorman, and Motorad. For example, Carquest Premium Engine Cooling Parts start at just $22.99 with an average 4.4 star rating. Dorman and Motorad offer similar pricing and quality, backed by strong customer feedback. With over 304 reviews and a solid 5 star average, you can shop with confidence knowing other GMC Sierra 2500 HD owners approve.

Competitive Prices and Extensive Inventory

The average price for a 2020 GMC Sierra 2500 HD Engine Cooling Part at Advance Auto Parts is around $63.44, with a range that starts at $4.99 and goes up to $809.99. With 24 options in stock from 8 trusted brands, finding the right fit is easy. Popular picks like Standard Thermostat: With Seal, 180 Degrees, 185 Degrees, Radiator Cap: 20 PSI, and Engine Coolant Reservoir Cap: Twist, Plastic, 1 Pack start at just $17.99 and offer a great balance of form and function.

Explore Related Parts

While you’re upgrading or replacing your Engine Cooling Part, don’t forget to check out other key components like Air Conditioning Parts and Blower Motor and Related Products. At Advance Auto Parts, we’re here to help you keep your 2020 GMC Sierra 2500 HD in peak condition, inside and out.

Essential 2020 GMC Sierra 2500 HD Engine Cooling Parts

Carquest Premium – Radiator (Part No.432350)

Radiator

from

$477.99
Carquest Premium Radiators offer one of the largest product ranges in the aftermarket, covering more than 95% of the popular automotive and light truck applications. Carquest Premium Radiators meet or exceed original equipment specifications, ensuring that products fit and perform just as well or better than the original parts, providing you peace of mind.

Product Features:
  • Our B-type tubes feature central reinforcement to provide greater tolerance to pressure. Stronger tube design means drastically reduced probability of tube failure.
  • Our deep extrusion header provides a stronger tube to header joint which is more resistant to the effects of vibration and thermal tube expansion, virtually eliminating tube to header leaks.
  • Our fin edges are folded for increased stability and heat disbursement properties.
  • Our included “multi-fit” attachments allow one radiator to cover multiple vehicle applications without sacrificing OE fit. This results in wider vehicle coverage with substantially less inventory.
  • Thermal expansion cuts allow for longer life and reduce failure rates by allowing improved core expansion and contraction during normal heat cycles.
  • We design and manufacture all our radiators to meet or even exceed Original Equipment specifications. We take pride in producing the most reliable replacement parts in the market.
  • We use longer header tabs for increased pressure resistance. This reduces the potential for tank to header leaks.
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Carquest Premium – Radiator (Part No.813244)

Radiator

from

$418.99
Carquest Premium Radiators offer one of the largest product ranges in the aftermarket, covering more than 95% of the popular automotive and light truck applications. Carquest Premium Radiators meet or exceed original equipment specifications, ensuring that products fit and perform just as well or better than the original parts, providing you peace of mind.

Product Features:
  • Our B-type tubes feature central reinforcement to provide greater tolerance to pressure. Stronger tube design means drastically reduced probability of tube failure.
  • Our deep extrusion header provides a stronger tube to header joint which is more resistant to the effects of vibration and thermal tube expansion, virtually eliminating tube to header leaks.
  • Our fin edges are folded for increased stability and heat disbursement properties.
  • Our included “multi-fit” attachments allow one radiator to cover multiple vehicle applications without sacrificing OE fit. This results in wider vehicle coverage with substantially less inventory.
  • Thermal expansion cuts allow for longer life and reduce failure rates by allowing improved core expansion and contraction during normal heat cycles.
  • We design and manufacture all our radiators to meet or even exceed Original Equipment specifications. We take pride in producing the most reliable replacement parts in the market.
  • We use longer header tabs for increased pressure resistance. This reduces the potential for tank to header leaks.
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Carquest Premium – Coolant Housing/Water Outlet (Part No.85945)

Coolant Housing/Water Outlet

from

$20.99
We are proud to offer this Carquest product line: Carquest Water Outlets. Our products are engineered and tested to provide years of trouble free operation and designed to be hassle free OE replacement part that meets and/or exceeds OE standards. Backed by over 50 years of mobile temperature control experience, fix it once and fix it right with CARQUST Water Outlets and Thermostat Housings.

Product Features:
  • Meets and/or exceeds OEM standard
  • Includes quality gasket or O-ring to ensure proper seal (where applicable))
  • 100% leak tested
  • Direct-fit replacement for ease of installation
  • Meets and/or exceeds OEM standard
  • Includes quality gasket or O-ring to ensure proper seal (where applicable)
  • Coated with corrosion and rust inhibitor
  • 100% leak tested
  • Direct-fit replacement for ease of installation
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Carquest Premium – Engine Coolant Water Outlet (Part No.85083)

Engine Coolant Water Outlet

from

$26.49
Direct-fit replacement for ease of installation

Product Features:
  • Meets and/or exceeds OEM standard
  • Direct-fit replacement for ease of installation
  • 100% leak tested
  • Meets and/or exceeds OEM standard
  • 100% leak tested
  • Direct-fit replacement for ease of installation
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GM Genuine Parts – Water Inlet Seal (Part No.12587397)

Water Inlet Seal

from

$8.99
GM Genuine Parts Engine Coolant Thermostat Seals are designed, engineered, and tested to rigorous standards, and are backed by General Motors. These seals help close and prevent coolant from leaking out of your vehicle’s cooling system components. GM Genuine Parts are the true OE parts installed during the production of or validated by General Motors for GM vehicles. Some GM Genuine Parts may have formerly appeared as ACDelco GM Original Equipment (OE).

Product Features:
  • Helps close and prevent coolant from leaking out of your vehicle’s cooling system components to maintain the proper engine temperature
  • Some GM Genuine Parts may have formerly appeared as ACDelco GM Original Equipment (OE)
  • GM Genuine Parts are designed, engineered and tested to rigorous standards, and are backed by General Motors
  • GM Engineers design and validate OE parts specifically for your Chevrolet, Buick, GMC, or Cadillac vehicle
  • GM regularly updates production and service part designs to integrate new materials and technologies
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Dorman – Clutch Fan Blade: Plastic, Cost Effective and Reliable (Part No.621-525)

Clutch Fan Blade: Plastic, Cost Effective and Reliable

from

$151.99
Replace your damaged cooling fan blade with this direct replacement. This vehicle-specific application is engineered for a perfect fit and is made from quality materials to ensure durability and restore proper cooling system operation.

Product Features:
  • Direct replacement – this engine cooling fan blade fits and functions like the original equipment fan blade
  • Quality construction – manufactured from premium materials for a long service life
  • Excellent value – original equipment quality at a lower price
  • Quality tested – has undergone testing to ensure proper fit and performance
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Dorman – Clutch Fan Blade: Plastic, Cost Effective and Reliable (Part No.621-514)

Clutch Fan Blade: Plastic, Cost Effective and Reliable

from

$111.99
Replace your damaged cooling fan blade with this direct replacement. This vehicle-specific application is engineered for a perfect fit and is made from quality materials to ensure durability and restore proper cooling system operation.

Product Features:
  • Direct replacement – this engine cooling fan blade fits and functions like the original equipment fan blade
  • Quality construction – manufactured from premium materials for a long service life
  • Excellent value – original equipment quality at a lower price
  • Quality tested – has undergone testing to ensure proper fit and performance
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Felpro – Engine Coolant Thermostat Housing Gasket (Part No.35762)

Engine Coolant Thermostat Housing Gasket

from

$4.29
Fel-Pro gaskets offer 100% vehicle sealing with application-specific materials to give you sealing solutions with the performance and durability professionals trust.

Product Features:
  • Meets or exceeds all original equipment specifications
  • Application specific design to ensure a perfect fit
  • Engineered and manufactured specifically for the repair environment
  • Unsurpassed quality you can trust
  • Validated for fit, form, and function
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Victor Reinz – Engine Coolant Thermostat Housing Seal (Part No.71-13578-00)

Engine Coolant Thermostat Housing Seal

from

$5.99
Product Features:
  • Choosing Victor Reinz assures getting OE quality parts in gaskets sets that have the coverage, contents, packaging and electronic cataloging to best meet the needs of the aftermarket.
  • Dana engineering-approved for fit, form and function
  • Meets or exceeds OE specifications
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Dorman – Water Pump Outlet Pipe (Part No.626-661)

Water Pump Outlet Pipe

from

$82.99
This engine coolant pipe is designed to match the fit and function of the original pipe on specified vehicles. It is engineered to help ensure leak-free coolant transfer when an original pipe has failed from heat or corrosion.

Product Features:
  • Direct replacement – this engine coolant pipe is designed to match the fit and function of the original pipe on specified vehicles
  • Ideal solution – engineered to help ensure leak-free coolant transfer when an original pipe has failed from heat or corrosion
  • Durable construction – designed and manufactured to strict specifications for reliable performance
  • Trustworthy quality – backed by a team of product experts in the United States and more than a century of automotive experience
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Dorman – HD Solutions – Engine Coolant Reservoir Cap: Twist, Plastic, 1 Pack (Part No.902-5601)

Engine Coolant Reservoir Cap: Twist, Plastic, 1 Pack

from

$20.99
Cracked or lost the original engine coolant reservoir cap Replace it seamlessly and effectively with this precisely engineered, direct replacement cap.

Product Features:
  • Direct replacement – this engine coolant reservoir cap directly replaces a cracked or lost original cap
  • Application specific – made to match dimensions of reservoir cap on only certain vehicle years, makes and models
  • Seamless fit – reverse-engineered from the original equipment to fit perfectly
  • Excellent value – a quick, easy replacement that’s less expensive than going back to the dealership
See More

Carquest Premium – Radiator Cap: 15 PSI (Part No.10248)

Radiator Cap: 15 PSI

from

$15.99
Crafted to meet the exact specifications set by Original Equipment Manufacturers (OEM), these products are engineered for effortless installation and removal. Constructed from premium-grade components, incorporating proper relief and vacuum valves, they ensure optimal performance even in the most demanding automotive cooling systems. Rigorously quality-tested, these components provide exceptional, out-of-the-box performance and superior durability to meet or exceed the highest standards of today’s vehicles.

Product Features:
  • Maintains proper cooling system pressure
  • Easy installation and removal
  • 100% tested to ensure proper pressure and longevity
  • Meets all OEM specifications
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Factory Air – Coolant Temp Sensor Switch (Part No.36403)

Coolant Temp Sensor Switch

from

$24.05
High quality OE replacement part with all components needed to complete the job

Product Features:
  • Contains gaskets, O-rings, or seals to properly replace the product
  • Brass construction for accurate temperature sensing
  • Color coded for easy identification
  • Zinc coated terminal to resist corrosion
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Carquest Premium – Coolant Temperature Sensor 1TS1001 (Part No.WTC1002)

Coolant Temperature Sensor 1TS1001

from

$22.99
Product Features:
  • Designed to meet or exceed OE specifications for fit, form and function
  • 100% factory resistance calibrated to ensure precision tolerances, resulting in extremely accurate temperature for optimal performance
  • OE precision matched thermistor ensuring Carquest sensors match OE output resistances across all temperature positions
  • O-rings, seals or thread sealant are included if required
  • Weather-tight connectors prevent leaks and corrosion for longer life
  • Extensive design validation testing and 100% end-of-line tested
  • Carquest Vehicle Solutions Technical Support available from ASE certified technicians: 1-866-687-5413
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Motorad UltraStats – Thermostat: With Seal, 187 Degrees (Part No.5456-187)

Thermostat: With Seal, 187 Degrees

from

$28.99
UltraStat Thermostats are the toughest thermostats on the market. All heavy gauge stainless steel construction provides long-life durability, as well as complete corrosion resitance. Exclusive BLVT Valve technology minimizes thermal shock to cooling system components.

Product Features:
  • Heavy gauge stainless steel components offer increased reliability and long-lasting durability
  • Exclusive BLVT Valve Technology minimizes thermal shock to cooling system components
  • Stainless steel thermal element for unmatched corrosion resistance and revolutionary REAX wax mixture provides quicker reaction time
  • AccuSpring Design for stable temperature control and increased cabin comfort
See More

Motorad – Engine Coolant Thermostat Housing Assembly Thermostat: With Inlet, With Seal, 187 Degrees (Part No.524KT)

Engine Coolant Thermostat Housing Assembly Thermostat: With Inlet, With Seal, 187 Degrees

from

$58.99
Kit includes thermostat, housing, and all necessary seals/gaskets to do the complete job. These individual parts are manufactured with OEM quality materials and safety standards by an OE Supplier. This thermostat and housing will meet and exceed the expectations of the OE thermostat to insure the best product for your cooling system. Stands up to even the most demanding automotive cooling systems. Manufactured with OEM specifications and processes. Copper case and wax compound assures rapid response to temperature changes in the coolant. Offset design, air relief valve, and OEM style seals included where applicable.

Product Features:
  • High grade stainless steel and copper construction
  • Meets or exceeds OEM standards
  • Consistent and precise response to cooling system needs
  • Original equipment design for worry-free direct fit replacement
  • 100% tested and calibrated
See More

Felpro – Engine Water Pump Gasket (Part No.36109)

Engine Water Pump Gasket

from

$15.99
Fel-Pro gaskets are specifically designed for the repair environment to deliver a reliable seal on even the most troublesome applications. Designed for imperfect sealing surfaces and manufactured with proprietary materials, you can count on Fel-Pro for innovative sealing solutions for the real-world repair environment.

Product Features:
  • Meets or exceeds all original equipment specifications
  • Application specific design
  • Manufactured for the sealing repair environment
  • Validated for fit, form, and function
  • Quality that you can trust
See More

Felpro – Engine Water Pump Gasket (Part No.35635)

Engine Water Pump Gasket

from

$7.49
Fel-Pro gaskets are specifically designed for the repair environment to deliver a reliable seal on even the most troublesome applications. Designed for imperfect sealing surfaces and manufactured with proprietary materials, you can count on Fel-Pro for innovative sealing solutions for the real-world repair environment.

Product Features:
  • Meets or exceeds all original equipment specifications
  • Application specific design
  • Manufactured for the sealing repair environment
  • Validated for fit, form, and function
  • Quality that you can trust
See More

Felpro – Engine Water Pump Gasket (Part No.36110)

Engine Water Pump Gasket

from

$9.49
Fel-Pro gaskets are specifically designed for the repair environment to deliver a reliable seal on even the most troublesome applications. Designed for imperfect sealing surfaces and manufactured with proprietary materials, you can count on Fel-Pro for innovative sealing solutions for the real-world repair environment.

Product Features:
  • Meets or exceeds all original equipment specifications
  • Application specific design
  • Manufactured for the sealing repair environment
  • Validated for fit, form, and function
  • Quality that you can trust
See More

Carquest Premium – Universal Fan Clutch – Severe Duty (Part No.215139)

Universal Fan Clutch - Severe Duty

from

$94.99
Advance Auto Parts is proud to carry comparable exact-fit parts from multiple vendors, as such, the item you receive may be one of two quality brands. Both brands meet the same fitment requirements and are equal in their performance and specifications. The fan clutch is the component of the cooling system that varies the fan speed to meet the cooling needs of the engine. The fan clutch provides high airflow volume and, by only operating the fan as needed, promotes good fuel economy. Carquest fan clutches are designed to meet OE performance specifications.

Product Features:
  • Designed, tested, and built by application
  • OE performance, fit, and appearance
  • Precision machined
  • Out of box installation
  • Designed, tested, and built by application
  • OE performance, fit, and appearance
  • Precision machined
  • Out of box installation
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Carquest Premium – Universal Fan Clutch (Part No.216023)

Universal Fan Clutch

from

$94.99
Advance Auto Parts is proud to carry comparable exact-fit parts from multiple vendors, as such, the item you receive may be one of two quality brands. Both brands meet the same fitment requirements and are equal in their performance and specifications.

Product Features:
  • Designed, tested, and built by application
  • OE performance, fit, and appearance
  • Precision machined
  • Out of box installation
  • Designed, tested, and built by application
  • OE performance, fit, and appearance
  • Precision machined
  • Out of box installation
See More

GM Genuine Parts – Engine Cooling Fan Clutch (Part No.15-4694)

Engine Cooling Fan Clutch

from

$401.99
GM Genuine Parts Engine Cooling Fan Clutches are designed, engineered, and tested to rigorous standards, and are backed by General Motors. These engine cooling fan clutches control the speed of the radiator fan based on the temperature of the air after it passes through the radiator fins. GM Genuine Parts are the true OE parts installed during the production of or validated by General Motors for GM vehicles. Some GM Genuine Parts may have formerly appeared as ACDelco GM Original Equipment (OE).

Product Features:
  • Helps quiet noisy cooling fans with stuck fan clutches
  • Some GM Genuine Parts may have formerly appeared as ACDelco GM Original Equipment (OE)
  • GM Engineers design and validate OE parts specifically for your Chevrolet, Buick, GMC, or Cadillac vehicle
  • Original equipment parts are designed to work with your GM vehicle safety systems — aftermarket replacement parts may not meet the same OE safety regulations, depending on the part type
  • GM regularly updates production and service part designs to integrate new materials and technologies
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Carquest Premium – Radiator Cap Tester Adapter (Part No.12033)

Radiator Cap Tester Adapter

from

$95.99
Tester adapter for the MT-300 cooling system pressure testers. Professional grade test equipment to ensure an automotive cooling system is operating at the correct pressure. Made from high quality materials to ensure durability. Designed to test automotive coolant caps.

Product Features:
  • Machined metal construction
  • Works with MT-300 pressure tester
  • Tests coolant caps
  • Professional quality
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Top Street Performance – Chevrolet LSX 45 Degree Swivel Chrome Aluminum Water Neck (Part No.HC8937C)

Chevrolet LSX 45 Degree Swivel Chrome Aluminum Water Neck

from

$26.99
Don’t miss a detail with a new water neck from TSP. Composed of high-quality aluminum, they are available for multiple applications in both polished and black finishes. This water neck comes with bolts for easier installation.

Product Features:
  • Material: Aluminum
  • Finish: Chrome
  • Style: 45
  • Sealing Style: O-ring (Not Included)
  • Heater Bypass Provision: No
  • Hardware: Included
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Motorad – Coolant Housing/Water Outlet (Part No.CH6007)

Coolant Housing/Water Outlet

from

$81.99
Manufactured to the highest OEM quality standards by an OE Supplier, using proprietary material to stand up to even the most demanding automotive cooling systems. Thermal shock validated and 100% leak tested Meets or exceeds all OEM standards.

Product Features:
  • Easy, one step fit and installation
  • No special tools required
  • Meets or exceeds all OEM standards
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Carquest Premium – Engine Coolant Thermostat Housing (Part No.85254)

Engine Coolant Thermostat Housing

from

$54.99
High quality OE replacement part with all components needed to complete the job.

Product Features:
  • Meets and/or exceeds OEM standard
  • Includes quality gasket or O-ring  to ensure proper seal (where applicable)
  • Includes quality gasket or O-ringá to ensure proper seal (where applicable)
  • Coated with corrosion and rust inhibitor
  • 100% leak tested
  • Direct-fit replacement for ease of installation
  • Meets and/or exceeds OEM standard
  • Includes quality gasket or O-ring to ensure proper seal (where applicable)
  • Coated with corrosion and rust inhibitor
  • 100% leak tested
  • Direct-fit replacement for ease of installation
See More

Dorman – Coolant Housing/Water Outlet: with Water Outlet, 90 Degree Neck Angle (Part No.902-2127)

Coolant Housing/Water Outlet: with Water Outlet, 90 Degree Neck Angle

from

$111.99
This replacement engine coolant thermostat housing is engineered to match the fit and durability of the stock thermostat housing on specified vehicles. It is designed to withstand extreme temperature changes to extend service life.

Product Features:
  • Ideal replacement – this engine coolant thermostat housing directly replaces the original housing on specified vehicle years, makes and models
  • Durable construction – this part is specifically designed to withstand extreme temperature changes and resist cracking and leaking
  • Cost-effective and reliable – offers original manufacturer quality at lower cost than getting replacement at dealer
  • Industry-leading design – professionally engineered by the aftermarket leader in replacement thermostat housings
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Dorman – Coolant Housing/Water Outlet: with Housing and Gasket (Part No.902-2068)

Coolant Housing/Water Outlet: with Housing and Gasket

from

$40.99
This replacement engine coolant thermostat housing is engineered to match the fit and durability of the stock thermostat housing on specified vehicles. It is designed to withstand extreme temperature changes to extend service life.

Product Features:
  • Ideal replacement – this engine coolant thermostat housing directly replaces the original housing on specified vehicle years, makes and models
  • Durable construction – this part is specifically designed to withstand extreme temperature changes and resist cracking and leaking
  • Cost-effective and reliable – offers original manufacturer quality at lower cost than getting replacement at dealer
  • Industry-leading design – professionally engineered by the aftermarket leader in replacement thermostat housings
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Most Popular Radiator Fan Clutch for 2020 GMC Sierra 2500 HDs

Enhance your 2020 GMC Sierra 2500 HD with this popular Radiator Fan Clutch we have in stock, for $134.99.

Carquest Premium – Reverse Rotation Severe Duty Thermal Fan Clutch (Part No.46145)

Reverse Rotation Severe Duty Thermal Fan Clutch

from

$134.99
Our products are engineered and tested to provide years of trouble free operation. Backed by over 50 years of mobile a/c experience, fix it once and fix it right with Carquest.

Product Features:
  • Designed, tested, and built by application
  • OE performance, fit, and appearance
  • Precision machined
  • Out of box installation
  • Designed, tested, and built by application
  • OE performance, fit, and appearance
  • Precision machined
  • Out of box installation
See More

Best-Selling 2020 GMC Sierra 2500 HD Coolant Reservoir Caps

Upgrade your Sierra 2500 HD with one of our 4 best-selling Coolant Reservoir Caps, earning an average 5 stars rating across 7 reviews.

Carquest Premium – Radiator Cap: 20 PSI (Part No.10271)

Radiator Cap: 20 PSI

from

$22.99
Crafted to meet the exact specifications set by Original Equipment Manufacturers (OEM), these products are engineered for effortless installation and removal. Constructed from premium-grade components, incorporating proper relief and vacuum valves, they ensure optimal performance even in the most demanding automotive cooling systems. Rigorously quality-tested, these components provide exceptional, out-of-the-box performance and superior durability to meet or exceed the highest standards of today’s vehicles.

Product Features:
  • Maintains proper cooling system pressure
  • Easy installation and removal
  • 100% tested to ensure proper pressure and longevity
  • Meets all OEM specifications
See More

Dorman – Help – Engine Coolant Reservoir Cap: Twist, Plastic, 1 Pack (Part No.54218)

Engine Coolant Reservoir Cap: Twist, Plastic, 1 Pack

from

$17.99
Cracked or lost the original engine coolant reservoir cap- Replace it seamlessly and effectively with this precisely engineered, direct replacement cap.

Product Features:
  • Direct replacement – this engine coolant reservoir cap directly replaces a cracked or lost original cap
  • Application specific – made to match dimensions of reservoir cap on only certain vehicle years, makes and models
  • Seamless fit – reverse-engineered from the original equipment to fit perfectly
  • Excellent value – a quick, easy replacement that’s less expensive than going back to the dealership
See More

Dorman – Help – Engine Coolant Reservoir Cap: Twist, Plastic, 1 Pack (Part No.54218CD)

Engine Coolant Reservoir Cap: Twist, Plastic, 1 Pack

from

$17.99
Cracked or lost the original engine coolant reservoir cap? Replace it seamlessly and effectively with this precisely engineered, direct replacement cap.

Product Features:
  • Direct replacement – this engine coolant reservoir cap directly replaces a cracked or lost original cap
  • Application specific – made to match dimensions of reservoir cap on only certain vehicle years, makes and models
  • Seamless fit – reverse-engineered from the original equipment to fit perfectly
  • Excellent value – a quick, easy replacement that’s less expensive than going back to the dealership
See More

Autotecnica – Expansion Tank Cap (Part No.GM0714619)

Expansion Tank Cap

from

$4.99
Autotecnica offers high-quality aftermarket parts for a wide variety of Asian and North American passenger cars and trucks, include braking, cooling, driveline, electrical, engine, fuel, HVAC, steering, and suspension categories. Autotecnica is the smart choice. Whether you’re a DIY enthusiast or professional technician in need of replacement parts that meet OEM specifications, Autotecnica is an excellent alternative to expensive ¿Genuine¿ components.

Product Features:
  • Guaranteed fitment
  • Precision-molded to OE cap dimensions to ensure compatibility with original and aftermarket coolant recovery tanks
  • Quality cap and seal materials resist engine heat and harsh cooling system environment
  • Factory pressure-tested
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Top-Quality Thermostats for 2020 GMC Sierra 2500 HDs

Choose a high-quality OEM or aftermarket Thermostat for GMC Sierra 2500 HDs and enjoy top-notch performance from $34.99.

Motorad – Standard Thermostat: With Seal, 180 Degrees, 185 Degrees (Part No.447448)

Standard Thermostat: With Seal, 180 Degrees, 185 Degrees

from

$46.99
Manufactured with OEM quality materials and safety standards by an OE Supplier. This thermostat will meet and exceed the expectations of the OE thermostat to insure the best product for your cooling system. Stands up to even the most demanding automotive cooling systems. Manufactured with OEM specifications and processes. Copper case and wax compound assures rapid response to temperature changes in the coolant. Offset design, air relief valve, and OEM style seals included where applicable.

Product Features:
  • High grade stainless steel and copper construction
  • Meets or exceeds OEM standards
  • Consistent and precise response to cooling system needs
  • Original equipment design for worry-free direct fit replacement
  • 100% tested and calibrated
See More

Carquest Premium – Standard Thermostat: With Seal, 185 Degrees (Part No.14728)

Standard Thermostat: With Seal, 185 Degrees

from

$43.99
Carquest Premium Thermostats are manufactured with OEM quality materials and safety standards by an OE Supplier. This thermostat will meet and exceed the expectations of the OE thermostat to insure the best product for your cooling system. Stands up to even the most demanding automotive cooling systems. Manufactured with OEM specifications and processes. Copper case and wax compound assures rapid response to temperature changes in the coolant. Offset design, air relief valve, and OEM style seals included where applicable.

Product Features:
  • High grade stainless steel and copper construction
  • Meets or exceeds OEM standards
  • Consistent and precise response to cooling system needs
  • Original equipment design for worry-free direct fit replacement
  • 100% tested and calibrated
See More

Carquest Premium – Standard Thermostat: With Seal, 180 Degrees (Part No.14738)

Standard Thermostat: With Seal, 180 Degrees

from

$42.99
Carquest Premium Thermostats are manufactured with OEM quality materials and safety standards by an OE Supplier. This thermostat will meet and exceed the expectations of the OE thermostat to insure the best product for your cooling system. Stands up to even the most demanding automotive cooling systems. Manufactured with OEM specifications and processes. Copper case and wax compound assures rapid response to temperature changes in the coolant. Offset design, air relief valve, and OEM style seals included where applicable.

Product Features:
  • High grade stainless steel and copper construction
  • Meets or exceeds OEM standards
  • Consistent and precise response to cooling system needs
  • Original equipment design for worry-free direct fit replacement
  • 100% tested and calibrated
See More

Carquest Premium – Standard Thermostat: With Seal, 187 Degrees (Part No.15158)

Standard Thermostat: With Seal, 187 Degrees

from

$34.99
Carquest Premium Thermostats are manufactured with OEM quality materials and safety standards by an OE Supplier. This thermostat will meet and exceed the expectations of the OE thermostat to insure the best product for your cooling system. Stands up to even the most demanding automotive cooling systems. Manufactured with OEM specifications and processes. Copper case and wax compound assures rapid response to temperature changes in the coolant. Offset design, air relief valve, and OEM style seals included where applicable.

Product Features:
  • High grade stainless steel and copper construction
  • Meets or exceeds OEM standards
  • Consistent and precise response to cooling system needs
  • Original equipment design for worry-free direct fit replacement
  • 100% tested and calibrated
See More

Motorad UltraStats – UltraStat Thermostat – 160 Degrees (Part No.5523-160)

UltraStat Thermostat - 160 Degrees

from

$60.99
UltraStat Thermostats are the toughest thermostats on the market. All heavy gauge stainless steel construction provides long-life durability, as well as complete corrosion resitance. Exclusive BLVT Valve technology minimizes thermal shock to cooling system components.

Product Features:
  • Heavy gauge stainless steel components offer increased reliability and long-lasting durability
  • Exclusive BLVT Valve Technology minimizes thermal shock to cooling system components
  • Stainless steel thermal element for unmatched corrosion resistance and revolutionary REAX wax mixture provides quicker reaction time
  • AccuSpring Design for stable temperature control and increased cabin comfort
See More

Motorad UltraStats – UltraStat Thermostat – 187 Degrees (Part No.5523-187)

UltraStat Thermostat - 187 Degrees

from

$60.99
UltraStat Thermostats are the toughest thermostats on the market. All heavy gauge stainless steel construction provides long-life durability, as well as complete corrosion resitance. Exclusive BLVT Valve technology minimizes thermal shock to cooling system components.

Product Features:
  • Heavy gauge stainless steel components offer increased reliability and long-lasting durability
  • Exclusive BLVT Valve Technology minimizes thermal shock to cooling system components
  • Stainless steel thermal element for unmatched corrosion resistance and revolutionary REAX wax mixture provides quicker reaction time
  • AccuSpring Design for stable temperature control and increased cabin comfort
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Our Top Pick for a 2020 GMC Sierra 2500 HD Water Pump Gasket

Invest in a durable Water Pump Gasket for your 2020 GMC, knowing you’re getting trusted brands and expert craftsmanship.

Felpro – Engine Water Pump Gasket (Part No.36110)

Engine Water Pump Gasket

from

$9.49
Fel-Pro gaskets are specifically designed for the repair environment to deliver a reliable seal on even the most troublesome applications. Designed for imperfect sealing surfaces and manufactured with proprietary materials, you can count on Fel-Pro for innovative sealing solutions for the real-world repair environment.

Product Features:
  • Meets or exceeds all original equipment specifications
  • Application specific design
  • Manufactured for the sealing repair environment
  • Validated for fit, form, and function
  • Quality that you can trust
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Our Radiators for 2020 GMC Sierra 2500 HDs

Make a smart move for your 2020 GMC Sierra 2500 HD with our Radiator for $809.99.

Carquest Premium – Radiator (Part No.4113879)

Radiator

from

$809.99
Carquest Premium Radiators offer one of the largest product ranges in the aftermarket, covering more than 95% of the popular automotive and light truck applications. Carquest Premium Radiators meet or exceed original equipment specifications, ensuring that products fit and perform just as well or better than the original parts, providing you peace of mind.

Product Features:
  • Our B-type tubes feature central reinforcement to provide greater tolerance to pressure. Stronger tube design means drastically reduced probability of tube failure.
  • Our deep extrusion header provides a stronger tube to header joint which is more resistant to the effects of vibration and thermal tube expansion, virtually eliminating tube to header leaks.
  • Our fin edges are folded for increased stability and heat disbursement properties.
  • Our included “multi-fit” attachments allow one radiator to cover multiple vehicle applications without sacrificing OE fit. This results in wider vehicle coverage with substantially less inventory.
  • Thermal expansion cuts allow for longer life and reduce failure rates by allowing improved core expansion and contraction during normal heat cycles.
  • We design and manufacture all our radiators to meet or even exceed Original Equipment specifications. We take pride in producing the most reliable replacement parts in the market.
  • We use longer header tabs for increased pressure resistance. This reduces the potential for tank to header leaks.
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Top-Rated Engine Cooling Part Brands For Your 2020 GMC Sierra 2500 HD

When it comes to finding the perfect Engine Cooling Part for your 2020 GMC Sierra 2500 HD, Advance Auto Parts has you covered with a wide selection of high-quality OEM and aftermarket options from 8 trusted brands. We carry the most popular Engine Cooling Part brands including Carquest Premium, Motorad, and Dorman, and more, all known for their exceptional customer ratings (average brand rating of 4.4 stars) and competitive prices, as low as $17.99. Purchasing a Engine Cooling Part from us here at Advance Auto Parts is a smart move for both you and your 2020 GMC Sierra 2500 HD, providing peace of mind with parts that meet or exceed OEM standards.

Popular Carquest Premium 2020 GMC Sierra 2500 HD Engine Cooling Parts

If you’re looking for a top-quality Engine Cooling Part for your 2020 GMC Sierra 2500 HD, Advance Auto Parts has exactly what you need with our selection of Carquest Premium Engine Cooling Parts. We have 3 Carquest Premium Engine Cooling Parts in stock for this fitment, all known for their durability and precision fit. With prices starting at just $22.99 and an average cost of $36.66, you’ll find the perfect Engine Cooling Part for your needs and budget. Carquest Premium Engine Cooling Parts for the 2020 GMC Sierra 2500 HD come highly rated, with over 20 customer reviews and an impressive average rating of 4.4 stars. Choosing a Carquest Premium Engine Cooling Part from Advance Auto Parts is a smart move to ensure quality and value for your vehicle.
Radiator Cap: 20 PSI
from $22.99
(6)
Radiator Cap: 20 PSI
“Easy to deal with and great products”
Standard Thermostat: With Seal, 180 Degrees
from $42.99
(7)
Standard Thermostat: With Seal, 180 Degrees
“Put in top block”
Standard Thermostat: With Seal, 185 Degrees
from $43.99
(7)
Standard Thermostat: With Seal, 185 Degrees
“Online purchase is great”

Top-Quality Motorad 2020 GMC Sierra 2500 HD Engine Cooling Parts

For those in search of a high-quality Engine Cooling Part for their 2020 GMC Sierra 2500 HD, Advance Auto Parts offers a great selection of Motorad Engine Cooling Parts. With 1 Motorad Engine Cooling Parts in stock, you can trust you’re getting top-tier parts designed for durability and a perfect fit. Prices for these Engine Cooling Parts start at just $46.99, giving you a range of options to suit your budget. Backed by over 3 customer ratings and an average rating of 4.3 stars, Motorad Engine Cooling Parts provide both reliability and excellent performance. Choosing a Motorad Engine Cooling Part from Advance Auto Parts is a smart investment in your vehicle’s performance and longevity.
Standard Thermostat: With Seal, 180 Degrees, 185 Degrees
from $46.99
(3)
Standard Thermostat: With Seal, 180 Degrees, 185 Degrees
“Product was correct! Repair went well”

FAQs for 2020 GMC Sierra 2500 HD Engine Cooling Parts

What are the best-selling Engine Cooling Parts for 2020 GMC Sierra 2500 HDs?

Out of 24 Engine Cooling Parts that fit 2020 GMC Sierra 2500 HDs, the following parts are the top sellers:

What’s the price range for 2020 GMC Sierra 2500 HD Engine Cooling Parts?

The prices of Engine Cooling Parts for the 2020 GMC Sierra 2500 HD range from $4.99 up to $809.99 for the most premium parts.

What is the average price of an Engine Cooling Part for a 2020 GMC Sierra 2500 HD?

The average price for Engine Cooling Parts for the 2020 GMC Sierra 2500 HD is $63.44. Keep in mind the variety of part types within our Engine Cooling Part category, where you are likely to find a wide range of prices across a variety of parts and components.

Does Advance Auto Parts sell Engine Cooling Parts for other GMC Sierra 2500 HD model years?

Yes, we carry Engine Cooling Parts for 24 model years of GMC Sierra 2500 HDs between 2001 and 2026. The following model years are the most popular for Engine Cooling Part purchases: 2023, 2022, 2021, 2019, 2018, 2017, 2016, 2015, and 2014.

What are the cheapest Engine Cooling Parts for my 2020 GMC Sierra 2500 HD?

The cheapest 2020 GMC Sierra 2500 HD Engine Cooling Parts we carry are:

Does Advance Auto Parts sell Engine Cooling Parts for any other 2020 GMC models?

What are the top-rated Engine Cooling Parts that fit the 2020 GMC Sierra 2500 HD?

The one 2020 GMC Sierra 2500 HD Engine Cooling Part we have in stock is the Expansion Tank Cap. It costs $4.99.

What types of Engine Cooling Parts do you sell for my 2020 GMC Sierra 2500 HD?

As of 3/1/26, these are some of the most in-demand types of Engine Cooling Parts for a 2020 GMC Sierra 2500 HD:

Can I get help with 2020 GMC Sierra 2500 HD Engine Cooling Part orders?

Contact our customer support team by chat or phone, through the help desk page, where you can find instant answers about GMC Engine Cooling Parts and more.

What is your return policy for GMC Sierra 2500 HD Engine Cooling Parts?

Advance Auto Parts keeps returns simple. For new GMC Sierra 2500 HD Engine Cooling Parts and accessories, your online orders can be returned, in their original condition, within 45 days. For requirements, see the returns page.