2021 Subaru WRX STI Cooling and Climate Controls

Essential Cooling and Climate Controls for 2021 Subaru WRX STIs

Felpro – O-RING (Part No.35524)

O-RING

from

$7.79
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
  • Each Fel-Pro gasket, no matter how small, is engineered to exacting standards with proprietary design, engineering and manufacturing processes
See More

Imperial – Electric Fan – 14" Diameter (Part No.226114)

Electric Fan - 14" Diameter

from

$99.99
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.
See More

NPW – Water Pump (Part No.G3000161186NPW)

Water Pump

from

$103.20
The NPW water pump is a 100% new replacement and contains no remanufactured components, assuring original equipment performance, quality and fit.

Product Features:
  • OE-Equivalent and direct fit application.
  • 100% new with no remanufactured parts.
  • Advanced impeller design.
  • Quality cast housing.
  • Precision bearings.
  • Resistant to corrosion.
  • Unitized bearing assembly.
See More

Carquest Premium – Coolant Temperature Sensor (Part No.WTC1315)

Coolant Temperature Sensor

from

$13.99
Approved materials for increased durability in even the most extreme temperatures. All MotoRad Coolant Temperature Sensors are designed to meet or exceed OEM specifications at our ISO TS16949 manufacturing facilities.

Product Features:
  • 100% factory resistance calibrated to ensure precision tolerances, resulting in extremely accurate temperature for optimal performance
  • Thread Sealant and/or O-ring pre-installed on applicable sensors to ensure leak free performance
  • Brass sensor housing precision machined to meet or exceed OE thermal conductivity
  • OE precision matched thermistor position for correct output parameters
  • Extensive product testing includes salt spray, high/low temperature impact, thermal vibration, durability, static electricity, and micro tension, among other tests, to ensure all sensors meet or exceed OEM specifications.
See More

Carquest Premium – Radiator Cap: 16 PSI (Part No.10333)

Radiator Cap: 16 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:
  • Safety lever to vent coolant pressure before removal
  • Maintains proper cooling system pressure
  • Easy installation and removal
  • 100% tested to ensure proper pressure and longevity
  • Meets all OEM specifications
See More

Carquest Premium – A/C Evaporator Parallel Flow (Part No.T64018)

A/C Evaporator Parallel Flow

from

$112.99
Carquest Evaporators are designed to remove heat from the air inside the passenger compartment of a vehicle resulting in cooler air temperatures. They are manufactured to meet or exceed original equipment specifications and are designed to easily fit into the engine compartment.

Product Features:
  • The design and manufacture of the evaporators result in uniform refrigerant distribution with optimal flow for improved performance and maximum heat transfer.
  • The evaporators are constructed to offer a lightweight, compact design that will fit easily within the engine compartment.
  • The surface treatment on each part ensures optimum water drainage to prevent mold and odors in the system.
  • The evaporators are 100% tested to meet or exceed original equipment specifications. Each part is helium tested to ensure no leaks.
  • O-Rings and gaskets necessary for installation are included.
See More

Imperial – Adjustable Thermostatic Fan Control (Part No.226203)

Adjustable Thermostatic Fan Control

from

$22.99
Adjustable Thermostatic Fan Control; Economy Model; 32-248°F. Controls the operating temperature of Imperial electric fans

Product Features:
  • Economy adjustable thermostatic fan control
  • Economy Model; 32-248°F
  • For use with Imperial electric fans
  • Probe installs into radiator fins
See More

Imperial – Thermostatic Fan Control – Adjustable (Part No.226208)

Thermostatic Fan Control - Adjustable

from

$62.99
Controls the operating temperature of Imperial electric fans. Operates up to 2 fans.

Product Features:
  • Adjustable thermostatic fan control
  • 160°F – 210°F thread-in probe
  • For use with Imperial electric fans
  • Thread-in probe for installation in water jacket or radiator
See More

Carquest Premium – Blower Motor: With Wheel (Part No.75081)

Blower Motor: With Wheel

from

$70.99
Carquest Premium Blower Motors 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 Premium Blower Motors. Meets or exceeds OE design. Magnetic size and properties compare or exceed OEM. Windings meet or exceed OEM Specifications. Motor RPM equivalent to or exceeds OEM motor.

Product Features:
  • Meets or exceeds OE design and performance
  • Magnetic size and properties compare or exceed OEM
  • Windings meet or exceed OEM specifications
  • Motor RPM equivalent to or exceeds OEM motor
See More

Beck/Arnley – Thermostat (Part No.143-0710)

Thermostat

from

$34.49
Temperature-controlled valve located in the hot leg between the engine and radiator. Often mounted on the cylinder head. Controls the flow of coolant through the radiator and regulates heat dissipation. The thermostat allows the engine to reach its operating temperature as quickly as possible to reduce oil dilution, cylinder bore wear, fuel consumption, exhaust emissions and improve the efficiency of the heating system. Self-cleaning design. Includes a long stroke for maximum cooling performance..
See More

Kuzeh – Thermostat (Part No.G400038694KUZ)

Thermostat

from

$27.40
Kuzeh offers a full line of thermostats to replace your original equipment thermostat. This includes a wide variety of temperature ranges all designed to operate within OEM specifications.

Product Features:
  • Strict quality control, and functional testing
  • Self-cleaning and self-aligning thermostat valve
  • Original equipment design provides exact fit and performance
  • Precise sealing edges reduce leakage and premature cooling
  • Temperature sensitive heat motor provides consistent valve response for smooth performance and precise engine cooling
  • Stainless steel assembly and springs are engineered for long life
See More

Victor Reinz – Engine Coolant Thermostat Housing Gasket (Part No.41-73300-00)

Engine Coolant Thermostat Housing Gasket

from

$5.79
With Victor Reinz gaskets, you can be sure you are getting sealing solutions that deliver OE quality gasket technology and engineering. That is because Victor Reinz is an original equipment supplier and the trusted choice of manufacturers the world over, offering broad coverage for foreign and domestic cars and trucks. In Victor Reinz gasket sets, you get the right combination of components needed for fast, long-lasting repairs.

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.
See More

Mahle – Thermostat Gasket (Part No.G40311700786MAH)

Thermostat Gasket

from

$4.66
The Mahle Engine Coolant Thermostat Gasket is a high quality Original Equipment replacement that is manufactured to meet or exceed OE specifications for fit, form, and function.

Product Features:
  • Seals the thermostat housing and helps prevent coolant from leaking from the engine for proper engine temperature
  • Premium Original Equipment replacement
  • Provides performance and dependability
  • Manufactured to meet OE specifications
See More

Felpro – Engine Water Pump Gasket (Part No.35747)

Engine Water Pump Gasket

from

$6.79
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
  • Manufactured for the sealing repair environment
  • Validated for fit, form, and function
  • Quality that you can trust
See More

Ishino – Water Pump Gasket (Part No.G3040161189ISH)

Water Pump Gasket

from

$2.22
Water Pump Gasket

Carquest Premium – Coolant Housing/Water Outlet: Gasket Included (Part No.85305)

Coolant Housing/Water Outlet: Gasket Included

from

$56.99
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)
  • Coated with corrosion and rust inhibitor
  • 100% leak tested
  • Direct-fit replacement for ease of installation
See More

Carquest Premium – Ambient Air Temperature Sensor (Part No.WTA1299)

Ambient Air Temperature Sensor

from

$51.99
CARQUEST premium engine management products provide the right products for a wide range of domestic and import applications. Delivering the highest performance and durability under demanding conditions.
See More

Carquest Premium – Heater Core (Part No.910537)

Heater Core

from

$209.99
Carquest Premium offers a complete line of automotive heater cores covering 94% of all North American vehicle applications. Carquest Premium provides value in several ways, including increased thermal performance and resistance to corrosion using enhanced design features, such as the latest fin and tube technology and design standardization for maximum availability. Carquest Premium offers certified heater cores that meet or exceed OE specifications and are all fitment checked in the actual vehicle’s HVAC heater module and are, thus, ready to be installed right out of the box for a “Drop-In Fit”. Carquest Premium heater cores are engineered and manufactured under ISO TS16949 quality systems and are 100% leak tested.

Product Features:
  • All heater cores are designed and tested to match or exceed OE specifications for form, fit and performance with a clear focus on obtaining the highest heat transfer performance possible through use of quality materials and manufacturing processes to ensu
  • Carquest Premium heater cores are engineered and manufactured under ISO TS16949 quality systems and are 100% leak tested.
  • Provides value in several ways, including increased thermal performance and resistance to corrosion using enhanced design features, such as the latest fin and tube technology and design standardization for maximum availability.
  • Carquest Premium offers a complete line of automotive heater cores covering 94% of all North American vehicle applications.
  • Our advanced engineering methods coupled with our innovative manufacturing technology provides products to the aftermarket that meet or exceed form, fit, and function of OEM Parts
See More

Felpro – Multi-Purpose O-Ring (Part No.36024)

Multi-Purpose O-Ring

from

$4.49
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
  • Manufactured for the sealing repair environment
  • Validated for fit, form, and function
  • Quality that you can trust
See More

Nippon Reinz – Engine Coolant Thermostat Gasket (Part No.G403138696NRZ)

Engine Coolant Thermostat Gasket

from

$2.88
The Nippon Reinz Engine Coolant Thermostat Gasket is a high quality Original Equipment replacement that is manufactured to meet or exceed OE specifications for fit, form, and function.

Product Features:
  • Seals the thermostat housing and helps prevent coolant from leaking from the engine for proper engine temperature
  • Premium Original Equipment replacement
  • Provides performance and dependability
  • Manufactured to meet OE specifications
See More

Dorman – Coolant Housing/Water Outlet: With Housing and Gasket, 180 Degree Neck Angle (Part No.902-5052)

Coolant Housing/Water Outlet: With Housing and Gasket, 180 Degree Neck Angle

from

$36.49
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
See More

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

Electric Fan - 12" Diameter

from

$94.99
Electric fan with 12″ diameter. Imperial electric fans are reversible for push or pull operation and are designed with a thin, aerodynamic profile for applications with limited space.

Product Features:
  • Rapid-Cool® Thin-Line electric fans
  • 12″ Diameter
  • 800 CFM
  • Use as a pusher or puller fan
See More

Upgrade your 2021 Subaru WRX STI with Top-Quality Cooling and Climate Controls

When it comes to maintaining or upgrading your 2021 Subaru WRX STI, nothing is more important than using high-quality OEM or aftermarket parts that you can trust. Whether you’re repairing damage to your Subaru or enhancing its overall performance, Cooling and Climate Controls are key to keeping your WRX STI functioning at its best. At Advance Auto Parts, we offer a wide selection of 27 Cooling and Climate Controls for the 2021 Subaru WRX STI, designed to meet your needs without breaking the bank. From Heating Part replacements to Blower Motor and Related Products upgrades, we’ve got you covered with parts that fit your vehicle perfectly and ensure long-lasting performance.

Affordable Prices and Wide Selection

Shopping for Cooling and Climate Controls for any vehicle can be a hassle, especially if you’re on a budget. But with Advance Auto Parts, you can find high-quality Cooling and Climate Controls for your 2021 Subaru WRX STI at great prices. Our Cooling and Climate Controls inventory for this model ranges from just $2.88 to $209.99, with an average price of $50.84. Our 27 Cooling and Climate Controls in stock come from 13 trusted brands, so you’re sure to find the right part for your 2021 Subaru WRX STI without overspending.

Top Brands and High Customer Satisfaction

Advance Auto Parts takes pride in offering only the best brands in the automotive industry. For your 2021 Subaru WRX STI, we stock popular OEM and aftermarket Cooling and Climate Controls from top names like FELPRO, Imperial, Carquest Premium, and more. FELPRO Cooling and Climate Controls start at just $4.49 and boast an impressive 5 stars average rating from customers. Imperial and Carquest Premium also bring quality to the table, with Cooling and Climate Controls available starting at $12.49, and at an average 4 stars rating. With 336 customer reviews and counting, our 2021 Subaru WRX STI Cooling and Climate Controls have a strong track record of reliability, ensuring you can trust your purchase.

Explore Related Parts and More

While you’re here, don’t forget to check out other essential categories that go hand in hand with Cooling and Climate Control upgrades. Explore related part types like Batteries and Chargers, Oil and Lubricants and more to make sure your 2021 Subaru WRX STI is always ready to roll. We’re committed to providing you with everything you need to keep your WRX STI in top shape, all in one place. Start shopping confidently below for your 2021 Subaru WRX STI!

Best-Selling Heating Parts for 2021 Subaru WRX STIs

Enhance the driving experience in your Subaru with 1 quality Heating Part components, starting at $209.99.

Carquest Premium – Heater Core (Part No.910537)

Heater Core

from

$209.99
Carquest Premium offers a complete line of automotive heater cores covering 94% of all North American vehicle applications. Carquest Premium provides value in several ways, including increased thermal performance and resistance to corrosion using enhanced design features, such as the latest fin and tube technology and design standardization for maximum availability. Carquest Premium offers certified heater cores that meet or exceed OE specifications and are all fitment checked in the actual vehicle’s HVAC heater module and are, thus, ready to be installed right out of the box for a “Drop-In Fit”. Carquest Premium heater cores are engineered and manufactured under ISO TS16949 quality systems and are 100% leak tested.

Product Features:
  • All heater cores are designed and tested to match or exceed OE specifications for form, fit and performance with a clear focus on obtaining the highest heat transfer performance possible through use of quality materials and manufacturing processes to ensu
  • Carquest Premium heater cores are engineered and manufactured under ISO TS16949 quality systems and are 100% leak tested.
  • Provides value in several ways, including increased thermal performance and resistance to corrosion using enhanced design features, such as the latest fin and tube technology and design standardization for maximum availability.
  • Carquest Premium offers a complete line of automotive heater cores covering 94% of all North American vehicle applications.
  • Our advanced engineering methods coupled with our innovative manufacturing technology provides products to the aftermarket that meet or exceed form, fit, and function of OEM Parts
See More

Most Popular 2021 Subaru WRX STI Blower Motor and Related Products

Customize your Subaru with 1 Blower Motor and Related Products products like Blower Motors, all priced under $70.99.

Carquest Premium – Blower Motor: With Wheel (Part No.75081)

Blower Motor: With Wheel

from

$70.99
Carquest Premium Blower Motors 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 Premium Blower Motors. Meets or exceeds OE design. Magnetic size and properties compare or exceed OEM. Windings meet or exceed OEM Specifications. Motor RPM equivalent to or exceeds OEM motor.

Product Features:
  • Meets or exceeds OE design and performance
  • Magnetic size and properties compare or exceed OEM
  • Windings meet or exceed OEM specifications
  • Motor RPM equivalent to or exceeds OEM motor
See More

Top Picks for 2021 Subaru WRX STI Engine Cooling Parts

Upgrade Subaru WRX STIs with top-quality Engine Cooling Parts parts, including 23 OEM and aftermarket selections for your 2021 model.

Imperial – Adjustable Thermostatic Fan Control (Part No.226203)

Adjustable Thermostatic Fan Control

from

$22.99
Adjustable Thermostatic Fan Control; Economy Model; 32-248°F. Controls the operating temperature of Imperial electric fans

Product Features:
  • Economy adjustable thermostatic fan control
  • Economy Model; 32-248°F
  • For use with Imperial electric fans
  • Probe installs into radiator fins
See More

Felpro – Engine Water Pump Gasket (Part No.35747)

Engine Water Pump Gasket

from

$6.79
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
  • Manufactured for the sealing repair environment
  • Validated for fit, form, and function
  • Quality that you can trust
See More

Felpro – O-RING (Part No.35524)

O-RING

from

$7.79
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
  • Each Fel-Pro gasket, no matter how small, is engineered to exacting standards with proprietary design, engineering and manufacturing processes
See More

Carquest Premium – Standard Thermostat: 170 Degrees (Part No.14147)

Standard Thermostat: 170 Degrees

from

$12.49
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

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

Electric Fan - 12" Diameter

from

$94.99
Electric fan with 12″ diameter. Imperial electric fans are reversible for push or pull operation and are designed with a thin, aerodynamic profile for applications with limited space.

Product Features:
  • Rapid-Cool® Thin-Line electric fans
  • 12″ Diameter
  • 800 CFM
  • Use as a pusher or puller fan
See More

Imperial – Adjustable Thermostatic Fan Control (Part No.226204)

Adjustable Thermostatic Fan Control

from

$55.99
Adjustable Thermostatic Fan Control. 160-210°F; push-in probe. Controls the operating temperature of Imperial electric fans. Operates up to 2 fans.

Product Features:
  • Adjustable thermostatic fan control
  • 160-210°F push-in probe
  • For use with Imperial electric fans
  • Probe installs into radiator fins
See More

Imperial – Electric Fan – 14" Diameter (Part No.226114)

Electric Fan - 14" Diameter

from

$99.99
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.
See More

Imperial – Thermostatic Fan Control – Preset (Part No.226206)

Thermostatic Fan Control - Preset

from

$38.49
Controls the operating temperature of Imperial electric fans. Operates up to 2 fans.

Product Features:
  • Preset thermostatic fan control
  • 185°F preset
  • For use with Imperial electric fans
  • Probe installs into radiator fins
See More

Imperial – Thermostatic Fan Control – Adjustable (Part No.226208)

Thermostatic Fan Control - Adjustable

from

$62.99
Controls the operating temperature of Imperial electric fans. Operates up to 2 fans.

Product Features:
  • Adjustable thermostatic fan control
  • 160°F – 210°F thread-in probe
  • For use with Imperial electric fans
  • Thread-in probe for installation in water jacket or radiator
See More

Original Equipment – Thermostat (Part No.G400038694OEA)

Thermostat

from

$20.84
The Original Equipment brand Thermostat is the same OEM quality and performance of the original equipment it replaces and is supplied in a plain box, with the car manufacturer’s logo on the part.

Product Features:
  • Original Equipment Supplier
  • Strict quality control, and functional testing
  • Self-cleaning and self-aligning thermostat valve
  • OES design provides exact fit and performance
  • Precise sealing edges reduce leakage and premature cooling
  • Temperature sensitive heat motor provides consistent valve response for smooth performance and precise engine cooling
  • Stainless steel assembly and springs are engineered for long life
See More

Felpro – Multi-Purpose O-Ring (Part No.36024)

Multi-Purpose O-Ring

from

$4.49
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
  • Manufactured for the sealing repair environment
  • Validated for fit, form, and function
  • Quality that you can trust
See More

Mahle – Thermostat Gasket (Part No.G40311700786MAH)

Thermostat Gasket

from

$4.66
The Mahle Engine Coolant Thermostat Gasket is a high quality Original Equipment replacement that is manufactured to meet or exceed OE specifications for fit, form, and function.

Product Features:
  • Seals the thermostat housing and helps prevent coolant from leaking from the engine for proper engine temperature
  • Premium Original Equipment replacement
  • Provides performance and dependability
  • Manufactured to meet OE specifications
See More

Kuzeh – Thermostat (Part No.G400038694KUZ)

Thermostat

from

$27.40
Kuzeh offers a full line of thermostats to replace your original equipment thermostat. This includes a wide variety of temperature ranges all designed to operate within OEM specifications.

Product Features:
  • Strict quality control, and functional testing
  • Self-cleaning and self-aligning thermostat valve
  • Original equipment design provides exact fit and performance
  • Precise sealing edges reduce leakage and premature cooling
  • Temperature sensitive heat motor provides consistent valve response for smooth performance and precise engine cooling
  • Stainless steel assembly and springs are engineered for long life
See More

Carquest Premium – Coolant Temperature Sensor (Part No.WTC1315)

Coolant Temperature Sensor

from

$13.99
Approved materials for increased durability in even the most extreme temperatures. All MotoRad Coolant Temperature Sensors are designed to meet or exceed OEM specifications at our ISO TS16949 manufacturing facilities.

Product Features:
  • 100% factory resistance calibrated to ensure precision tolerances, resulting in extremely accurate temperature for optimal performance
  • Thread Sealant and/or O-ring pre-installed on applicable sensors to ensure leak free performance
  • Brass sensor housing precision machined to meet or exceed OE thermal conductivity
  • OE precision matched thermistor position for correct output parameters
  • Extensive product testing includes salt spray, high/low temperature impact, thermal vibration, durability, static electricity, and micro tension, among other tests, to ensure all sensors meet or exceed OEM specifications.
See More

Carquest Premium – Coolant Housing/Water Outlet: Gasket Included (Part No.85305)

Coolant Housing/Water Outlet: Gasket Included

from

$56.99
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)
  • Coated with corrosion and rust inhibitor
  • 100% leak tested
  • Direct-fit replacement for ease of installation
See More

Aisan – Water Pump (Part No.G30002709660ASC)

Water Pump

from

$140.37
Water Pump

NPW – Water Pump (Part No.G3000161186NPW)

Water Pump

from

$103.20
The NPW water pump is a 100% new replacement and contains no remanufactured components, assuring original equipment performance, quality and fit.

Product Features:
  • OE-Equivalent and direct fit application.
  • 100% new with no remanufactured parts.
  • Advanced impeller design.
  • Quality cast housing.
  • Precision bearings.
  • Resistant to corrosion.
  • Unitized bearing assembly.
See More

Dorman – Coolant Housing/Water Outlet: With Housing and Gasket, 180 Degree Neck Angle (Part No.902-5052)

Coolant Housing/Water Outlet: With Housing and Gasket, 180 Degree Neck Angle

from

$36.49
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
See More

AISIN – Thermostat (Part No.G4000928144ASC)

Thermostat

from

$35.66
Thermostat

Dorman – Help – Radiator Cap (Part No.54237)

Radiator Cap

from

$22.99
This radiator cap is designed to match the fit and function of the original cap on specified vehicles, and is engineered for durability and reliable performance.

Product Features:
  • Direct replacement – this radiator cap is designed to match the fit and function of the original cap on specified vehicles.
  • Restores functionality – reliable replacement for an original cap that is missing, leaking or failed due to gasket fatigue and heat
  • Durable construction – this part is made from quality materials to ensure reliable performance and long service life
  • Trustworthy quality – backed by team of product experts in the United States and more than a century of automotive experience
See More

Autopart International Inc – Thermostat (Part No.G40002071380API)

Thermostat

from

$20.65
Thermostat

Autopart International Inc – Radiator Cap (Part No.G10101910064API)

Radiator Cap

from

$17.56
Radiator Cap

Nippon Reinz – Engine Coolant Thermostat Gasket (Part No.G403138696NRZ)

Engine Coolant Thermostat Gasket

from

$2.88
The Nippon Reinz Engine Coolant Thermostat Gasket is a high quality Original Equipment replacement that is manufactured to meet or exceed OE specifications for fit, form, and function.

Product Features:
  • Seals the thermostat housing and helps prevent coolant from leaking from the engine for proper engine temperature
  • Premium Original Equipment replacement
  • Provides performance and dependability
  • Manufactured to meet OE specifications
See More

In-Demand Air Conditioning Parts for 2021 Subaru WRX STIs

Select from 1 premium Air Conditioning Parts parts for your 2021 Subaru WRX STI.

TYC – A/C Evaporator (Part No.R11302376861TYC)

A/C Evaporator

from

$129.05
A/C Evaporator

Most Sold 2021 Subaru WRX STI HVAC Electrical Parts

Explore our best-selling Subaru parts for the 2021 WRX STI among 1 OEM and aftermarket options starting from $51.99.

Carquest Premium – Ambient Air Temperature Sensor (Part No.WTA1299)

Ambient Air Temperature Sensor

from

$51.99
CARQUEST premium engine management products provide the right products for a wide range of domestic and import applications. Delivering the highest performance and durability under demanding conditions.
See More

Top-Rated Cooling and Climate Controls Brands For Your 2021 Subaru WRX STI

Shop for the best-rated brands offering Cooling and Climate Controls and other products for your 2021 Subaru WRX STIs. Below you’ll find some of our best rated Cooling and Climate Controls from FELPRO, Imperial, and Carquest Premium, and more. Cooling and Climate Controls from these brands that fit a 2021 WRX STI start at just $4.49 and are rated as high as 5 stars. OEM and aftermarket Cooling and Climate Controls don’t get more top quality, durable, and affordable than from the brands below.

Popular FELPRO 2021 Subaru WRX STI Cooling and Climate Controls

When it comes to maintaining or upgrading your 2021 Subaru WRX STI, using quality Cooling and Climate Controls is essential to ensure durability and a perfect fit. FELPRO ticks all of those boxes. We offer a wide selection of FELPRO Cooling and Climate Controls, specifically designed for the 2021 Subaru WRX STI. With over 3 FELPRO brand Cooling and Climate Controls in stock, you’re sure to find what you need. The prices for these top-notch parts start as low as $4.49, with an average price of just $6.36. Plus, with over 9 customer reviews and an average rating of 5 stars, you can trust that our FELPRO Cooling and Climate Controls will get the job done right. Choose Advance Auto Parts for reliability, quality, and expert-approved parts that keep your vehicle running strong.

Engine Water Pump Gasket
from
$6.79

(2)

Engine Water Pump Gasket

“Works fine from what I can tell 1000 miles later”

O-RING
from
$7.79

(7)

O-RING

“Used with new thermostat 1999 Subaru”

Multi-Purpose O-Ring
from
$4.49
This product is not rated

Multi-Purpose O-Ring

“”

Popular Imperial 2021 Subaru WRX STI Cooling and Climate Controls

Imperial auto parts is one of the highest quality Cooling and Climate Control brands in the market. Any 2021 Subaru WRX STI owner should feel confident when installing genuine Imperial parts in their vehicle. To ensure the best fit and performance for your 2021 WRX STI, Advance Auto Parts carries a full inventory of 6 Imperial Cooling and Climate Controls. Plus you will be keeping your Subaru in peak condition while saving money because prices on these Imperial Cooling and Climate Controls range from $22.99 to $99.99, plus, with more than 130 customer reviews and an impressive 4 stars average rating, you can be confident the Fram Cooling and Climate Controls below will deliver on both quality and value.

Electric Fan - 12" Diameter
from
$94.99

(38)

Electric Fan – 12" Diameter

“good”

Adjustable Thermostatic Fan Control
from
$22.99

(35)

Adjustable Thermostatic Fan Control

“Advance kicks butt”

Adjustable Thermostatic Fan Control
from
$55.99

(33)

Adjustable Thermostatic Fan Control

“I used this fan control on my 2006 pt cruiser. It’s simple to install and works great. I’m going to get another one for my 1999 jeep Cherokee.”

FAQs for 2021 Subaru WRX STI Cooling and Climate Controls

Which Cooling and Climate Controls are best-sellers for 2021 Subaru WRX STIs?

Out of 27 Cooling and Climate Controls that fit 2021 Subaru WRX STIs, the following parts are the top sellers:

What’s the price range for 2021 Subaru WRX STI Cooling and Climate Controls?

Cooling and Climate Control prices for the 2021 Subaru WRX STI start at $2.88 and go up to $209.99 for the most premium parts.

What’s the average price of a Cooling and Climate Control for a 2021 Subaru WRX STI?

The average price for Cooling and Climate Controls for the 2021 Subaru WRX STI is $50.84. Keep in mind the variety of part types within our Cooling and Climate Control category so you are likely to find a wide range of prices across a variety of parts and components.

Does Advance Auto Parts sell Cooling and Climate Controls for other Subaru WRX STI model years?

Yes, we currently carry Cooling and Climate Controls for 6 model years of Subaru WRX STIs between 2015 and 2020. Cooling and Climate Controls are bought most frequently for the following model years: 2020, 2019, 2018, 2017, 2016, and 2015.

What are the cheapest Cooling and Climate Controls for my 2021 Subaru WRX STI?

The cheapest 2021 Subaru WRX STI Cooling and Climate Controls we carry in stock are:

What are the top-rated Cooling and Climate Controls that fit the 2021 Subaru WRX STI?

Out of 336 reviews by customers, our 2021 Subaru WRX STI Cooling and Climate Controls have an average customer rating of . These are some of the highest-rated Cooling and Climate Control types for the 2021 Subaru WRX STI and their top-rated products:

What types of Cooling and Climate Controls do you sell for my 2021 Subaru WRX STI?

As of 2/5/25, these are some of the most in-demand types of Cooling and Climate Controls for a 2021 Subaru WRX STI:

Can I get help with 2021 Subaru WRX STI Cooling and Climate Control orders?

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

What is your return policy for Subaru WRX STI Cooling and Climate Controls?

Advance Auto Parts keeps returns simple. For new Subaru WRX STI Cooling and Climate Controls and accessories, your online orders can be returned, in their original condition, within 45 days. For requirements, see the returns page.