2021 BMW X3 Engine Cooling Parts
Keep Your 2021 BMW X3 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 BMW X3 looking sharp and performing at its best. At Advance Auto Parts we carry a wide selection of dependable options, including Thermostat and Water Outlet Assemblies, Coolant Reservoirs, 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.
Competitive Prices and Extensive Inventory
The average price for a 2021 BMW X3 Engine Cooling Part at Advance Auto Parts is around $290.37, with a range that starts at $24.99 and goes up to $1,570.00. With 8 options in stock from 3 trusted brands, finding the right fit is easy. Popular picks like Radiator Cap: 20 PSI, Cap-Expansion Tank, and Radiator Cap: 20 PSI start at just $24.99 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. At Advance Auto Parts, we’re here to help you keep your 2021 BMW X3 in peak condition, inside and out.
Find Your Specific 2021 BMW X3 Engine Cooling Parts
Looking for the perfect Engine Cooling Part for your 2021 BMW X3? You’re in the right place. Below, you’ll find links to various types of Engine Cooling Parts that fit your vehicle. At Advance Auto Parts, we offer only the highest quality OEM and aftermarket Engine Cooling Parts, ensuring durability and a precise fit for your BMW X3. Whether you’re driving a 2021 model or another popular model year like
2014,
2015,
2016,
2017,
2018,
2019,
2020,
2022, and
2023, we’ve got you covered. Purchasing Engine Cooling Parts from Advance Auto Parts is a smart choice, giving you access to trusted brands and parts built to perform. Below, you’ll find links to various types of Engine Cooling Parts that fit your vehicle.
Essential 2021 BMW X3 Engine Cooling Parts
Dorman – Pressurized Coolant Reservoir: Black, Plastic, Original Equipment Replacement (Part No.603-535)
from
$86.99
Engine coolant reservoirs can crack and leak when they become brittle over time. This replacement reservoir is designed to match the fit, function, and performance of an original reservoir on specified BMW vehicles. This reservoir includes a thermostat, mounting clip, reservoir cap, and coolant level sensor for a complete repair.
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Product Features:
- Direct replacement – this engine coolant reservoir is made to match the fit and performance of the original equipment on specified BMW vehicles and designed to help restore cooling system function
- Complete solution – this reservoir includes a thermostat, mounting clip, reservoir cap, and coolant level sensor to help ensure a professional and predictable repair
- 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
Dorman – Pressurized Coolant Reservoir: Black, Plastic, Original Equipment Replacement (Part No.603-765)
from
$117.99
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.
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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
Rein – Expansion Tank Kit (Part No.EPK0018)
from
$87.99
Rein Automotive OE quality expansion tank kits, install, fit and perform the way the original manufacturer intended. These tanks are designed to match or exceed the OE materials used and are produced from virgin plastic with no regrind to prevent cracking from heat cycles and ensure the plastic is durable and will have a long service life
Product Features:
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Product Features:
- Includes sensor (if applicable) and Cap
- Produced from virgin plastic meeting/exceeding OE specifications and ensuring long life
- Resistant to cracking and wear from heat cycles preventing coolant loss
- Direct fitment allows easy installation
Rein – Expansion Tank (Part No.EPT0125)
from
$85.99
Rein Automotive OE quality expansion tanks, install, fit and perform the way the original manufacturer intended. These tanks are designed to match or exceed the OE materials used and are produced from virgin plastic with no regrind to prevent cracking from heat cycles and ensure the plastic is durable and will have a long service life.
Product Features:
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Product Features:
- Produced from virgin plastic meeting/exceeding OE specifications and ensuring long life
- Resistant to cracking and wear from heat cycles preventing coolant loss
- Direct fitment allows easy installation
- Manufactured to strict engineering standards/specifications in materials and tolerances
KAI – Coolant Reservoir (Part No.BM3014102)
from
$66.99
New Platinum Pro Coolant Recovery Tank, Models With 6 Cylinder Engine
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Product Features:
- Models With 6 Cylinder Engine, 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
Carquest Premium – Coolant Temperature Sensor 1TS1493 (Part No.WTA2355)
from
$137.99
Carquest Premium coolant temperature sensors and switches are designed to perform in harsh engine environments and meet or exceed original equipment (O.E.) specifications. Built by manufacturers that meet IATF 16949 certified framework, an internationally recognized proof of quality in the automotive industry, Carquest Premium coolant temperature sensors and switches undergo extensive validation testing to ensure long-lasting performance and reliability. Carquest Premium coolant temperature sensors and switches are part of our Carquest Vehicle Solutions, which is a full line of engine management and electronics products that help control ignition, fuel delivery and emission systems. Carquest Vehicle Solutions are OE-quality parts designed, engineered and tested by world-class manufacturers to ensure a reliable and long-lasting repair.
Product Features:
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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
Product Features:
Delphi – Engine Coolant Temperature Sensor (Part No.TS10270)
from
$25.99
Delphi’s history is one of OE heritage and quality. Our global technical requirements include design specifications and validation testing based on over 100 years of OE experience. Our material selections, material thickness, and material types are built from OE specifications to exceed aftermarket expectations. We put in place strict manufacturing processes to ensure quality control in every part we make. Delphi’s pioneering spirit delivers innovative solutions designed to support the aftermarket in servicing the vehicles of today, and tomorrow.
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Product Features:
- Delphi temperature sensors deliver accurate readings and optimal performance
- Delphi’s one-piece design and automated production process eliminates internal connectors and failure points
- Each sensor is electrically insulated to eliminate interference from other components in the vehicle
- Delphi temperature sensors are impervious to electrical noise and interference
Carquest Premium – Engine Coolant Temperature Sensor (Part No.WTA2276)
from
$96.99
Carquest Premium coolant temperature sensors and switches are designed to perform in harsh engine environments and meet or exceed original equipment (O.E.) specifications. Built by manufacturers that meet IATF 16949 certified framework, an internationally recognized proof of quality in the automotive industry, Carquest Premium coolant temperature sensors and switches undergo extensive validation testing to ensure long-lasting performance and reliability. Carquest Premium coolant temperature sensors and switches are part of our Carquest Vehicle Solutions, which is a full line of engine management and electronics products that help control ignition, fuel delivery and emission systems. Carquest Vehicle Solutions are OE-quality parts designed, engineered and tested by world-class manufacturers to ensure a reliable and long-lasting repair.
Product Features:
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Product Features:
- Designed to meet or exceed OE specifications for fit, form and function
- 100% factory resistance calibrated to ensure extremely accurate temperature readings for optimal performance
- O-rings, seals or thread sealant are included if required
- Wires, clips and probe length match OE (where applicable)
- 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
NTK – Engine Coolant Temperature Sensor (Part No.EF0086)
from
$32.99
The Engine Coolant Temperature Sensor determines the exact temperature of the engine coolant by sending an analog signal to the ECM to ensure proper air/fuel ratio along with proper operation of the cooling fans and temperature gauge. The Engine Coolant Temperature Sensor may be located on the cylinder head, engine block, thermostat housing or intake manifold. Reasons for replacement include, check engine light illumination, erratic or no temperature gauge operation, erratic or no cooling fan operation, and engine overheating.
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Product Features:
- OE MATCHED: Wires and probe length match OE. Mounting clips included where applicable
- FASTER RESPONSE TIME: Thermal conductive grease inside brass housing increases sensor response time
- THE DIFFERENCE: Thread sealant/o-ring installed where applicable. Thermistor placement within the housing matches OE to ensure proper output. Proper thermal conductive grease to provide accurate temperature transfer to the thermistor
Carquest Premium – Coolant Temperature Sensor (Part No.WTC2193)
from
$49.99
Carquest Premium coolant temperature sensors and switches are designed to perform in harsh engine environments and meet or exceed original equipment (O.E.) specifications. Built by manufacturers that meet IATF 16949 certified framework, an internationally recognized proof of quality in the automotive industry, Carquest Premium coolant temperature sensors and switches undergo extensive validation testing to ensure long-lasting performance and reliability. Carquest Premium coolant temperature sensors and switches are part of our Carquest Vehicle Solutions, which is a full line of engine management and electronics products that help control ignition, fuel delivery and emission systems. Carquest Vehicle Solutions are OE-quality parts designed, engineered and tested by world-class manufacturers to ensure a reliable and long-lasting repair.
Product Features:
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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 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
Carquest Premium – Radiator (Part No.813371)
from
$274.99
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:
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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)
KAI – Radiator (Part No.RAD13371)
from
$165.99
New Platinum Pro Radiator
Product Features:
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Product Features:
- Made Of Plastic and Aluminum
- 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
- Radiator Cap Not Included
- Check Out The Large Selection Of Parts Available For Your Vehicle
Carquest Premium – Radiator (Part No.813277)
from
$191.99
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:
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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
Carquest Premium – Radiator (Part No.438150)
from
$333.99
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:
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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
Carquest Premium – Radiator (Part No.813370)
from
$235.99
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:
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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
Behr – Radiator (Part No.G1000458078BEH)
from
$586.45
Aluminum Core Radiator The Behr replacement radiator guarantees the same quality fit and performance as the OE radiator it replaces. The Behr radiator core is manufactured using high quality anti corrosive aluminum and fiber glass-reinforced polyamide coolant tanks that are highly resistant to cracking and deformation.
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Product Features:
- OE-Equivalent
- Direct fit for easy installation.
- High quality corrosion resistant materials.
- OE Style mounting brackets and hose connections.
- Mechanically bonded aluminum core.
- Integrated transmission oil cooler when applicable.
Rein – Cap-Expansion Tank (Part No.CPE0035)
from
$24.99
Rein Automotive OE Quality expansion tank caps are designed to be direct replacements for OE caps. Rein caps are designed to match or exceed the OE materials used and are produced to the highest standards to ensure long service life. Rein Automotive OE quality expansion tank caps keep the coolant system at the proper pressure just like the OE cap.
Product Features:
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Product Features:
- Manufactured to strict engineering standards/specifications in materials and tolerances.
- Direct fit.
- Meets or exceeds pressure specifications demanded by the OE manufacturer.
- Produced by an original equipment supplier.
Carquest Premium – Radiator Cap: 20 PSI (Part No.T64)
from
$27.99
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:
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Product Features:
- Maintains proper cooling system pressure
- Easy installation and removal
- 100% tested to ensure proper pressure and longevity
- Meets all OEM specifications
Product Features:
Rein – Cap-Expansion Tank (Part No.CPE0030P)
from
$20.99
Rein Automotive OE Quality expansion tank caps are designed to be direct replacements for OE caps. Rein caps are designed to match or exceed the OE materials used and are produced to the highest standards to ensure long service life. Rein Automotive OE quality expansion tank caps keep the coolant system at the proper pressure just like the OE cap.
Product Features:
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Product Features:
- Manufactured to strict engineering standards/specifications in materials and tolerances.
- Direct fit.
- Meets or exceeds pressure specifications demanded by the OE manufacturer.
- Produced by an original equipment supplier.
Carquest Premium – Radiator Cap: 30 PSI (Part No.10247)
from
$25.99
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:
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Product Features:
- Maintains proper cooling system pressure
- Easy installation and removal
- 100% tested to ensure proper pressure and longevity
- Meets all OEM specifications
Motorad – Radiator Cap: 20 PSI (Part No.T-64)
from
$26.99
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:
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Product Features:
- Maintains proper cooling system pressure
- Easy installation and removal
- 100% tested to ensure proper pressure and longevity
- Meets all OEM specifications
Beck/Arnley – Thermostat (Part No.143-0825)
from
$126.99
Beck/Arnley parts meet foreign nameplate OE specifications for form, fit and function. Our product specialists work with a network of global sourcing partners so you can install the right part with confidence.
Product Features:
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Product Features:
- Matches OE form, fit and function
- Premium materials to withstand extreme temperatures and long stroke for maximum cooling
- Quality construction for durability
- Be sure to use the proper coolant to maximize cooling system components. See Beck/Arnley catalog for the coolant for this application.
- Application specific for this vehicle
Motorad – Integrated Thermostat Housing: With Sensor, 226 Degrees (Part No.822-226)
from
$146.99
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. Offset design, air relief valve, and OEM style seals included where applicable
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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
Product Features:
Motorad – Integrated Thermostat Housing: With Sensor, 207 Degrees (Part No.955-207)
from
$126.99
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:
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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
Dorman – Thermostat Assembly: Includes Sensor, Housing, and Thermostat, 217 Degrees (Part No.902-5161)
from
$137.99
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.
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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
Dorman – Thermostat Assembly: Includes Housing, Thermostat, and Gasket, 206 Degrees (Part No.902-813)
from
$98.99
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. Every Dorman part is backed by over 100 years of experience, along with a dedicated team of product experts, automotive engineers and technical support specialists based in the United States. We are passionate about giving repair professionals and vehicle owners greater freedom to fix cars and trucks, which is why we have more than 100,000 parts in our catalog today and promise to never stop driving new solutions.
Product Features:
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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
Carquest Premium – Integrated Thermostat Housing: With Sensor, With Seal, 207 Degrees (Part No.14602)
from
$83.99
Carquest Premium Integrated Housing Thermostats are manufactured with OEM quality materials and safety standards by an OE Supplier. This integrated thermostat 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 as well as the design and function of the housing. Offset design, air relief valve, and OEM style seals included where applicable.
Product Features:
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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
Motorad – Integrated Thermostat Housing: With Sensor, 217 Degrees (Part No.947-217)
from
$192.99
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:
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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
Popular 2021 BMW X3 Engine Cooling Parts Categories
Most Popular Thermostat and Water Outlet Assembly for 2021 BMW X3s
Enhance your 2021 BMW X3 with this popular Thermostat and Water Outlet Assembly we have in stock, for $1,570.00.
Motorad – Engine Coolant Control Valve: Includes Thermostat, Housing, Seals (Part No.TA9251)
from
$1570.00
MotoRad Coolant Control Valves are designed and tested to provide precise and quick coolant redirection for every application. Manufactured using the finest OEM approved materials and electrical isolation features for increased durability and safety in the most extreme temperatures and conditions. All MotoRad Coolant Control Valves are designed to meet or exceed OEM specifications at our ISO TS16949 manufacturing facilities.
Product Features:
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Product Features:
- An efficient Coolant Control Valve is critical to cooling the engine and other components by ensuring the coolant is directed to the proper channel where needed
- Designed to meet or exceed OE in fit, form and function
- 100% factory tested to ensure proper signal response and isolation providing unmatched performance and quality
- 100% factory tested to ensure proper signal response and isolation providing unmatched performance and qualityá
- Manufactured using the highest quality materials for increased durability in even the most extreme environments.
- Extensive product testing includes high/low temperature impact, thermal vibration, durability, static electricity, and micro tension, among other tests, to ensure all Coolant Control Valves meet or exceed OEM specifications
Best-Selling 2021 BMW X3 Coolant Reservoir
Upgrade your X3 with our best-selling Coolant Reservoir.
Rein – Expansion Tank (Part No.EPT0262)
from
$117.99
Rein Automotive OE quality expansion tanks, install, fit and perform the way the original manufacturer intended. These tanks are designed to match or exceed the OE materials used and are produced from virgin plastic with no regrind to prevent cracking from heat cycles and ensure the plastic is durable and will have a long service life.
Product Features:
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Product Features:
- Produced from virgin plastic meeting/exceeding OE specifications and ensuring long life.
- Resistant to cracking and wear from heat cycles preventing coolant loss.
- Direct fitment allows easy installation.
Top-Quality Radiators for 2021 BMW X3s
Choose a high-quality OEM or aftermarket Radiator for BMW X3s and enjoy top-notch performance from $319.99.
Carquest Premium – RADIATOR (Part No.4113910)
from
$319.99
Reach Radiators offer one of the largest product ranges in the aftermarket, covering more than 95% of the popular automotive and light truck applications. Reach 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.
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Top Picks for 2021 BMW X3 Coolant Temperature Sensors
Invest in one of our 2 durable Coolant Temperature Sensors for your 2021 BMW, knowing you’re getting trusted brands and expert craftsmanship.
Carquest Premium – Coolant Temperature Sensor 1TS1493 (Part No.WTA2355)
from
$137.99
Carquest Premium coolant temperature sensors and switches are designed to perform in harsh engine environments and meet or exceed original equipment (O.E.) specifications. Built by manufacturers that meet IATF 16949 certified framework, an internationally recognized proof of quality in the automotive industry, Carquest Premium coolant temperature sensors and switches undergo extensive validation testing to ensure long-lasting performance and reliability. Carquest Premium coolant temperature sensors and switches are part of our Carquest Vehicle Solutions, which is a full line of engine management and electronics products that help control ignition, fuel delivery and emission systems. Carquest Vehicle Solutions are OE-quality parts designed, engineered and tested by world-class manufacturers to ensure a reliable and long-lasting repair.
Product Features:
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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
Carquest Premium – Engine Coolant Temperature Sensor (Part No.WTA2276)
from
$96.99
Carquest Premium coolant temperature sensors and switches are designed to perform in harsh engine environments and meet or exceed original equipment (O.E.) specifications. Built by manufacturers that meet IATF 16949 certified framework, an internationally recognized proof of quality in the automotive industry, Carquest Premium coolant temperature sensors and switches undergo extensive validation testing to ensure long-lasting performance and reliability. Carquest Premium coolant temperature sensors and switches are part of our Carquest Vehicle Solutions, which is a full line of engine management and electronics products that help control ignition, fuel delivery and emission systems. Carquest Vehicle Solutions are OE-quality parts designed, engineered and tested by world-class manufacturers to ensure a reliable and long-lasting repair.
Product Features:
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Product Features:
- Designed to meet or exceed OE specifications for fit, form and function
- 100% factory resistance calibrated to ensure extremely accurate temperature readings for optimal performance
- O-rings, seals or thread sealant are included if required
- Wires, clips and probe length match OE (where applicable)
- 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
Coolant Reservoir Caps for 2021 BMW X3s
Make a smart move for your 2021 BMW X3 with products all priced from $24.99 to $27.99.
Motorad – Radiator Cap: 20 PSI (Part No.T-64)
from
$26.99
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:
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Product Features:
- Maintains proper cooling system pressure
- Easy installation and removal
- 100% tested to ensure proper pressure and longevity
- Meets all OEM specifications
Carquest Premium – Radiator Cap: 20 PSI (Part No.T64)
from
$27.99
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:
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Product Features:
- Maintains proper cooling system pressure
- Easy installation and removal
- 100% tested to ensure proper pressure and longevity
- Meets all OEM specifications
Rein – Cap-Expansion Tank (Part No.CPE0035)
from
$24.99
Rein Automotive OE Quality expansion tank caps are designed to be direct replacements for OE caps. Rein caps are designed to match or exceed the OE materials used and are produced to the highest standards to ensure long service life. Rein Automotive OE quality expansion tank caps keep the coolant system at the proper pressure just like the OE cap.
Product Features:
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Product Features:
- Manufactured to strict engineering standards/specifications in materials and tolerances.
- Direct fit.
- Meets or exceeds pressure specifications demanded by the OE manufacturer.
- Produced by an original equipment supplier.
FAQs for 2021 BMW X3 Engine Cooling Parts
What are the best-selling Engine Cooling Parts for 2021 BMW X3s?
Out of 8 Engine Cooling Parts that fit 2021 BMW X3s, the following parts are the top sellers:
- Radiator Cap: 20 PSI (11357603) – $26.99
- Cap-Expansion Tank (11324354) – $24.99
- Radiator Cap: 20 PSI (50040425) – $27.99
What’s the price range for 2021 BMW X3 Engine Cooling Parts?
The prices of Engine Cooling Parts for the 2021 BMW X3 range from $24.99 up to $1,570.00 for the most premium parts.
What is the average price of an Engine Cooling Part for a 2021 BMW X3?
The average price for Engine Cooling Parts for the 2021 BMW X3 is $290.37. 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 BMW X3 model years?
What are the cheapest Engine Cooling Parts for my 2021 BMW X3?
The cheapest 2021 BMW X3 Engine Cooling Parts we carry are:
- Cap-Expansion Tank (11324354) – $24.99
- Radiator Cap: 20 PSI (11357603) – $26.99
- Radiator Cap: 20 PSI (50040425) – $27.99
- Engine Coolant Temperature Sensor (50047111) – $96.99
- Expansion Tank (50257782) – $117.99
Does Advance Auto Parts sell Engine Cooling Parts for any other 2021 BMW models?
Yes. We stock Engine Cooling Parts for 26 other popular 2021 BMW models. Some of the most popular are 2021 M3 Engine Cooling Parts, 2021 530i Engine Cooling Parts, 2021 X5 Engine Cooling Parts, 2021 M5 Engine Cooling Parts, and 2021 X1 Engine Cooling Parts.
What types of Engine Cooling Parts do you sell for my 2021 BMW X3?
As of 11/2/25, these are some of the most in-demand types of Engine Cooling Parts for a 2021 BMW X3:
Can I get help with 2021 BMW X3 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 BMW Engine Cooling Parts and more.
What is your return policy for BMW X3 Engine Cooling Parts?
Advance Auto Parts keeps returns simple. For new BMW X3 Engine Cooling Parts and accessories, your online orders can be returned, in their original condition, within 45 days. For requirements, see the returns page.