2021 GMC Terrain Engine Cooling Parts

Keep Your 2021 GMC Terrain 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 2021 GMC Terrain looking sharp and performing at its best. At Advance Auto Parts we carry a wide selection of dependable options, including Radiator Caps, Coolant Reservoir Caps, and Radiators. 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 Dorman and Carquest Premium. For example, Dorman Engine Cooling Parts start at just $8.49 with an average 4.2 star rating. Carquest Premium offer similar pricing and quality, backed by strong customer feedback. With over 56 reviews and a solid 5 star average, you can shop with confidence knowing other GMC Terrain owners approve.

Explore Related Parts

While you’re upgrading or replacing your Engine Cooling Part, don’t forget to check out other key components like Blend Doors and Blower Motor and Related Products. At Advance Auto Parts, we’re here to help you keep your 2021 GMC Terrain in peak condition, inside and out.

Essential 2021 GMC Terrain Engine Cooling Parts

Carquest Premium – Radiator: With Transmission Oil Cooler (Part No.813103)

Radiator: With Transmission Oil Cooler

from

$218.99
Carquest Premium radiators are designed and engineered for maximum performance, using the highest-grade materials to ensure all radiators meet or exceed original equipment (O.E.) fit, form and function. Carquest Premium radiators are built by manufacturers that meet IATF 16949 certified framework, an internationally recognized proof of quality in the automotive industry. Most modern vehicles use radiators with plastic tanks and our parts are engineered with integrated ribbing to prevent damage during thermal cycling. Carquest Premium radiators are also 100% tested to ensure a durable, leak-free cooling system repair.

Product Features:
  • Thermal tested under real-life temperature simulations
  • High tensile strength aluminum for maximum crimp strength
  • Plastic tanks are engineered with integrated ribbing for added strength to withstand cracks, bowing and distortion during thermal cycles
  • Thermal expansion slots extend core life and reduce failure rates by allowing improved core expansion and contraction during systematic heat cycles
  • Oil cooler designs meet or exceed OE standards, keeping the vehicle¿s engine and transmission performing at optimal conditions
  • OEM grade, premium fittings for transmission or engine oil coolers (where applicable)
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Carquest Premium – Radiator (Part No.4113682)

Radiator

from

$282.99
Carquest Premium radiators are designed and engineered for maximum performance, using the highest-grade materials to ensure all radiators meet or exceed original equipment (O.E.) fit, form and function. Carquest Premium radiators are built by manufacturers that meet IATF 16949 certified framework, an internationally recognized proof of quality in the automotive industry. Most modern vehicles use radiators with plastic tanks and our parts are engineered with integrated ribbing to prevent damage during thermal cycling. Carquest Premium radiators are also 100% tested to ensure a durable, leak-free cooling system repair.

Product Features:
  • Thermal tested under real-life temperature simulations
  • High tensile strength aluminum for maximum crimp strength
  • Plastic tanks are engineeredáwith integrated ribbingáfor addedástrength to withstand cracks, bowing and distortion during thermal cycles
  • Thermal expansion slots extend core life and reduce failure rates by allowing improved core expansion and contraction during systematic heat cycles
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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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KAI – Coolant Reservoir (Part No.GM3014117)

Coolant Reservoir

from

$34.99
New Platinum Pro Coolant Recovery Tank, With Cap

Product Features:
  • With Cap, Made Of Plastic
  • Meets All Federal Motor Safety Standards
  • No Drilling Needed For Installation
  • No Modifications Needed For Installation
  • Direct Fit Replacement For Your Vehicle
  • Same Form Fit And Function As OE
  • Check Out The Large Selection Of Parts Available For Your Vehicle
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KAI – Coolant Reservoir (Part No.GM3014116)

Coolant Reservoir

from

$24.99
New Platinum Pro Coolant Recovery Tank, Without Cap

Product Features:
  • Without Cap, Made Of Plastic
  • Meets All Federal Motor Safety Standards
  • No Drilling Needed For Installation
  • No Modifications Needed For Installation
  • Direct Fit Replacement For Your Vehicle
  • Same Form Fit And Function As OE
  • Check Out The Large Selection Of Parts Available For Your Vehicle
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Carquest Premium – Thermostat Housing: Gasket Included (Part No.86164)

Thermostat Housing: Gasket Included

from

$95.99
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% virgin resin material to insure durability
  • 100% leak tested
  • Direct-fit replacement for ease of installation
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Motorad – Integrated Thermostat Housing: With Seal, 195 Degrees (Part No.922-195)

Integrated Thermostat Housing: With Seal, 195 Degrees

from

$109.99
Manufactured with OEM quality materials and safety standards by an OE Supplier. 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.

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
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Dorman – Active Grille Shutter (Part No.601-513)

Active Grille Shutter

from

$236.99
This radiator shutter assembly matches the fit and function of the original equipment shutter to restore function to the vehicle’s active grille shutter system. This assembly features a factory-style connector for a plug-and-play installation.

Product Features:
  • Ideal replacement – this active grille shutter and motor assembly precisely matches the original equipment assembly on specific makes and models
  • Plug & play installation – this grille shutter assembly is made with a factory-style electrical connector for a trouble-free installation
  • Cost-effective solution – offers original equipment quality at competitive price
  • Quality tested – this part has undergone extensive testing to ensure a quality fit and reliable performance
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Dorman – Active Grille Shutter (Part No.601-444)

Active Grille Shutter

from

$111.99
This radiator shutter assembly matches the fit and function of the original equipment shutter to restore function to the vehicle’s active grille shutter system. This assembly features a factory-style connector for a plug-and-play installation.

Product Features:
  • Ideal replacement – this active grille shutter and motor assembly precisely matches the original equipment assembly on specific makes and models
  • Plug & play installation – this grille shutter assembly is made with a factory-style electrical connector for a trouble-free installation
  • Cost-effective solution – offers original equipment quality at competitive price
  • Quality tested – this part has undergone extensive testing to ensure a quality fit and reliable performance
See More

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

Radiator Cap: 20 PSI

from

$21.99
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 – Engine Coolant Water Outlet with Sensor (Part No.902-2132)

Engine Coolant Water Outlet with Sensor

from

$65.99
This replacement engine coolant water outlet is engineered to match the fit and durability of the stock engine coolant water outlet on specified vehicles. It is designed to withstand extreme temperature changes to extend service life.

Product Features:
  • Ideal replacement – this engine coolant water outlet directly replaces the original water outlet 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 water outlets
See More

Dorman – Engine Coolant Water Outlet (Part No.902-2087)

Engine Coolant Water Outlet

from

$114.99
This replacement engine coolant water outlet is engineered to match the fit and durability of the stock outlet on specific General Motors vehicles. It is rigorously tested for reliability, and has convenient features to simplify installation.

Product Features:
  • Ideal replacement – this engine coolant water outlet directly replaces the original water outlet on specific Buick, Chevrolet and GMC vehicles
  • Convenient features – includes sensor, bolts and quick-release clip to easily connect hose using constant-force clamp
  • Rigorous testing – design underwent as many as 16 functional tests to ensure performance and reliability
  • Restores operation – fully fixes a cracked or worn original equipment housing that is causing leaks or overheating
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Carquest Premium – Coolant Housing/Water Outlet (Part No.CH2009)

Coolant Housing/Water Outlet

from

$129.99
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.

Product Features:
  • Easy, one step fit and installation
  • No special tools required
  • Meets or exceeds all OEM standards
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GM Genuine Parts – Engine Coolant Temperature Sensor (Part No.213-4232)

Engine Coolant Temperature Sensor

from

$29.99
ACDelco GM Original Equipment Engine Coolant Temperature Sensors monitor engine temperature, and are GM-recommended replacements for your vehicle’s original components. The engine temperature signal is used by the engine control module to adjust the air/fuel mixture and ignition timing. These original equipment engine coolant temperature sensors have been manufactured to fit your GM vehicle, providing the same performance, durability, and service life you expect from General Motors.

Product Features:
  • Helps keep engine running at proper temperature
  • Alerts vehicle operator of high engine temperature conditions
  • GM-recommended replacement part for your GM vehicle’s original factory component
  • Offering the quality, reliability, and durability of GM OE
  • Manufactured to GM OE specification for fit, form, and function
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Carquest Premium – Coolant Temperature Sensor 1TS1170 (Part No.WTC1413)

Coolant Temperature Sensor 1TS1170

from

$9.99
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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Carquest Premium – Coolant Temperature Sensor 1TS1001 (Part No.WTC1002)

Coolant Temperature Sensor 1TS1001

from

$19.99
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
See More

Imperial – Electric Fan, 16" Diameter (Part No.226116)

Electric Fan, 16" Diameter

from

$92.99
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 Imperial.

Product Features:
  • Rapid-Cool Thin-Line electric fans
  • 16″ diameter
  • 1,400 CFM
  • Use as a pusher or puller fan
  • Motors built and tested to quality specifications
  • 16 in. universal fit reversible fan
  • 1400 CFM
  • UNIVERSAL fan, NOT a direct OE replacement. Measure core and verify space.
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Imperial – Electric Fan, 14" Diameter (Part No.226114)

Electric Fan, 14" Diameter

from

$99.99
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 Imperial.

Product Features:
  • Motors built and tested to quality specifications
  • 14 in. universal fit reversible fan
  • 1250 CFM
  • UNIVERSAL fan, NOT a direct OE replacement. Measure core and verify space.
  • Motors built and tested to quality specifications
  • 14 in. universal fit reversible fan
  • 1250 CFM
  • UNIVERSAL fan, NOT a direct OE replacement. Measure core and verify space.
See More

Imperial – Electric Fan, 12" Diameter (Part No.226112)

Electric Fan, 12" Diameter

from

$108.99
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 Imperial.

Product Features:
  • Rapid-Cool Thin-Line electric fans
  • 12″ Diameter
  • 800 CFM
  • Use as a pusher or puller fan
  • Motors built and tested to quality specifications
  • 12 in. universal fit reversible fan
  • 800 CFM
  • UNIVERSAL fan, NOT a direct OE replacement. Measure core and verify space.
See More

Dorman – Radiator Fan Assembly (Part No.621-985)

Radiator Fan Assembly

from

$487.99
This engine cooling fan assembly is precision-engineered to match the fit and performance of the stock radiator fan on specific vehicle years, makes and models. It has been rigorously tested to ensure it cools as effectively as the original part.

Product Features:
  • Ideal replacement – this engine cooling fan assembly was precision-engineered to match the fit and performance of the stock radiator fan assembly on specific vehicles
  • Complete package – assembly is designed with the same materials and components as the original part
  • Quality assured – motors are tested in laboratory settings to ensure performance
  • Cost effective and reliable – trustworthy manufacturing for far less than same part at the dealership
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Dorman – Help – Radiator Drain Cocks (Part No.61134)

Radiator Drain Cocks

from

$8.49
This radiator drain petcock is a direct replacement for the original equipment plug that may have deteriorated or corroded. Made of quality materials, this petcock is engineered to strict standards for durable use over time.

Product Features:
  • Direct replacement – this radiator drain petcock matches the fit and function of the original equipment part
  • Durable construction – this part is made of quality materials for a long service life
  • Saves money – offers original equipment quality at a competitive price
  • Quality assured – this petcock has undergone virtual testing to assure proper fit and function
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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

Dorman – Help – Engine Coolant Reservoir Cap: Flip Top, Plastic, 1 Pack (Part No.82724)

Engine Coolant Reservoir Cap: Flip Top, Plastic, 1 Pack

from

$15.99
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.82597)

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

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
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 – HD Solutions – Engine Coolant Reservoir Cap: Twist, Plastic, 1 Pack (Part No.902-5601)

Engine Coolant Reservoir Cap: Twist, Plastic, 1 Pack

from

$23.79
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

Most Popular Radiator Cap for 2021 GMC Terrains

Enhance your 2021 GMC Terrain with this popular Radiator Cap we have in stock, for $21.99.

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

Radiator Cap: 20 PSI

from

$21.99
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

Best-Selling 2021 GMC Terrain Coolant Reservoir Caps

Upgrade your Terrain with one of our 2 best-selling Coolant Reservoir Caps, earning an average 5 stars rating across 1 reviews.

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

Top-Quality Radiators for 2021 GMC Terrains

Choose a high-quality OEM or aftermarket Radiator for GMC Terrains and enjoy top-notch performance from $209.99.

Carquest Premium – Radiator (Part No.4113682)

Radiator

from

$282.99
Carquest Premium radiators are designed and engineered for maximum performance, using the highest-grade materials to ensure all radiators meet or exceed original equipment (O.E.) fit, form and function. Carquest Premium radiators are built by manufacturers that meet IATF 16949 certified framework, an internationally recognized proof of quality in the automotive industry. Most modern vehicles use radiators with plastic tanks and our parts are engineered with integrated ribbing to prevent damage during thermal cycling. Carquest Premium radiators are also 100% tested to ensure a durable, leak-free cooling system repair.

Product Features:
  • Thermal tested under real-life temperature simulations
  • High tensile strength aluminum for maximum crimp strength
  • Plastic tanks are engineeredáwith integrated ribbingáfor addedástrength to withstand cracks, bowing and distortion during thermal cycles
  • Thermal expansion slots extend core life and reduce failure rates by allowing improved core expansion and contraction during systematic heat cycles
See More

CSF Cooling – 26-13/16"L X 21-11/16"W X 7/8"D Core, Crossflow 1Row, Aluminum Core/Plastic Tank (Part No.3866)

26-13/16"L X 21-11/16"W X 7/8"D Core, Crossflow 1Row, Aluminum Core/Plastic Tank

from

$209.99
CSF offers the widest variety of automotive radiator models servicing over 3,200 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 our state-of-the-art testing lab.

Product Features:
  • CNC Machined Brackets And Fittings
  • B Tube Technology
  • High Performance Multi-Louvered Fin
  • Racing Style Aluminum Drain Plug
  • OE Radial And Deep Drawn Aluminum End Tanks
  • Wind Tunnel, Burst Pressure, And Vibration Testing
  • Drop In Fitment Requiring No Modifications
  • 1 Hour Hand Polish Mirror Finish
  • Wind Tunnel Tested For Optimal Radiator Core Cooling Efficiency. Burst Pressure And Impulse Cycle Tested For Strength. Salt Spray Tested For Corrosion Protection
See More

Top Picks for 2021 GMC Terrain Thermostat and Water Outlet Assemblies

Invest in one of our 2 durable Thermostat and Water Outlet Assemblies for your 2021 GMC, knowing you’re getting trusted brands and expert craftsmanship.

Dorman – Thermostat Assembly: Includes Housing and Thermostat, 176 Degrees (Part No.902-2124)

Thermostat Assembly: Includes Housing and Thermostat, 176 Degrees

from

$121.99
This replacement engine coolant thermostat housing assembly is engineered to match the fit and durability of the stock housing assembly on specified vehicles. It is designed to withstand extreme temperature changes to extend service life.

Product Features:
  • Ideal replacement – this engine coolant thermostat housing assembly directly replaces the original water outlet 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 housing assemblies
See More

Motorad – Integrated Thermostat Housing: 176 Degrees (Part No.993-176)

Integrated Thermostat Housing: 176 Degrees

from

$118.99
Manufactured with OEM quality materials and safety standards by an OE Supplier. 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.

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

Our Coolant Reservoirs for 2021 GMC Terrains

Make a smart move for your 2021 GMC Terrain with our Coolant Reservoir for $74.99.

Dorman – Pressurized Coolant Reservoir: White, Plastic, Original Equipment Replacement (Part No.603-861)

Pressurized Coolant Reservoir: White, Plastic, Original Equipment Replacement

from

$74.99
This replacement engine coolant reservoir is manufactured from quality materials to withstand the stresses of underhood heat and engine vibration. It is engineered and manufactured to match the fit and function of the original part.

Product Features:
  • Direct replacement – this engine coolant reservoir matches the fit and function of the original part
  • Ideal solution – engineered for a seamless installation
  • Durable construction – manufactured from quality materials to withstand underhood heat and vibration
  • Trustworthy design – backed by 100 years of automotive aftermarket experience
See More

Top-Rated Engine Cooling Part Brands For Your 2021 GMC Terrain

When it comes to finding the perfect Engine Cooling Part for your 2021 GMC Terrain, Advance Auto Parts has you covered with a wide selection of high-quality OEM and aftermarket options from 5 trusted brands. We carry the most popular Engine Cooling Part brands including Carquest Premium and Dorman, and more, all known for their exceptional customer ratings (average brand rating of 4.4 stars) and competitive prices, as low as $8.49. Purchasing a Engine Cooling Part from us here at Advance Auto Parts is a smart move for both you and your 2021 GMC Terrain, providing peace of mind with parts that meet or exceed OEM standards.

Popular Carquest Premium 2021 GMC Terrain Engine Cooling Parts

If you’re looking for a top-quality Engine Cooling Part for your 2021 GMC Terrain, Advance Auto Parts has exactly what you need with our selection of Carquest Premium Engine Cooling Parts. We have 1 Carquest Premium Engine Cooling Parts in stock for this fitment, all known for their durability and precision fit. With prices starting at just $21.99, you’ll find the perfect Engine Cooling Part for your needs and budget. Carquest Premium Engine Cooling Parts for the 2021 GMC Terrain come highly rated, with over 6 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 $21.99
(6)
Radiator Cap: 20 PSI
“Easy to deal with and great products”

Top-Quality Dorman 2021 GMC Terrain Engine Cooling Parts

For those in search of a high-quality Engine Cooling Part for their 2021 GMC Terrain, Advance Auto Parts offers a great selection of Dorman Engine Cooling Parts. With 2 Dorman 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 $8.49, with an average price of $13.24, giving you a range of options to suit your budget. Backed by over 8 customer ratings and an average rating of 4.2 stars, Dorman Engine Cooling Parts provide both reliability and excellent performance. Choosing a Dorman Engine Cooling Part from Advance Auto Parts is a smart investment in your vehicle’s performance and longevity.
Engine Coolant Reservoir Cap: Twist, Plastic, 1 Pack
from $17.99
(1)
Engine Coolant Reservoir Cap: Twist, Plastic, 1 Pack
“Fits perfect”
Radiator Drain Cocks
from $8.49
(7)
Radiator Drain Cocks
“was right”

FAQs for 2021 GMC Terrain Engine Cooling Parts

What are the best-selling Engine Cooling Parts for 2021 GMC Terrains?

Out of 16 Engine Cooling Parts that fit 2021 GMC Terrains, the following parts are the top sellers:

What’s the price range for 2021 GMC Terrain Engine Cooling Parts?

The prices of Engine Cooling Parts for the 2021 GMC Terrain range from $8.49 up to $487.99 for the most premium parts.

What is the average price of an Engine Cooling Part for a 2021 GMC Terrain?

The average price for Engine Cooling Parts for the 2021 GMC Terrain is $119.02. 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 Terrain model years?

Yes, we carry Engine Cooling Parts for 14 model years of GMC Terrains between 2010 and 2026. The following model years are the most popular for Engine Cooling Part purchases: 2023, 2022, 2020, 2019, 2018, 2017, 2016, 2015, and 2014.

What are the cheapest Engine Cooling Parts for my 2021 GMC Terrain?

The cheapest 2021 GMC Terrain Engine Cooling Parts we carry are:

Does Advance Auto Parts sell Engine Cooling Parts for any other 2021 GMC models?

What are the top-rated Engine Cooling Parts that fit the 2021 GMC Terrain?

The one 2021 GMC Terrain Engine Cooling Part we have in stock is the Radiator Drain Cocks. It is rated 4.5 stars and costs $8.49.

What types of Engine Cooling Parts do you sell for my 2021 GMC Terrain?

As of 11/2/25, these are some of the most in-demand types of Engine Cooling Parts for a 2021 GMC Terrain:

Can I get help with 2021 GMC Terrain 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 Terrain Engine Cooling Parts?

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