2018 BMW X3 Engine Cooling Parts
Keep Your 2018 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 2018 BMW X3 looking sharp and performing at its best. At Advance Auto Parts we carry a wide selection of dependable options, including Radiators, Coolant Reservoir Caps, and Coolant Temperature Sensors. 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 2018 BMW X3 Engine Cooling Part at Advance Auto Parts is around $160.89, with a range that starts at $24.99 and goes up to $548.99. With 10 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 and Heating Parts. At Advance Auto Parts, we’re here to help you keep your 2018 BMW X3 in peak condition, inside and out.
Find Your Specific 2018 BMW X3 Engine Cooling Parts
Looking for the perfect Engine Cooling Part for your 2018 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 2018 model or another popular model year like
2014,
2015,
2016,
2017,
2019,
2020,
2021,
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 2018 BMW X3 Engine Cooling Parts
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
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.
Product Features:
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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.
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
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 Coolant Hose Flange: With Seal (Part No.CH7113)
from
$26.99
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:
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Product Features:
- Helps manage temps by routing coolant to multiple locations
- Easy, one step fit and installation
- No special tools required
- Meets or exceeds all OEM standards
URO Parts – Water Pump (Part No.11517527799)
from
$32.99
For European vehicles, A.P.A. manufactures the URO Parts brand of quality replacement parts, which meet or exceed OEM specifications. URO Parts components are ideal for both professional and DIY vehicle repair, and are often the exclusive aftermarket alternative to overpriced ¿Genuine¿ components. By reducing deferred maintenance with URO Parts, you will increase the bottom line of your business. With its URO Premium line, A.P.A. offers problem-solving upgraded components that are superior to failure-prone OEM parts in design and/or materials. A.P.A. is so confident in the longevity and reliability of URO Premium products. URO Parts also specializes in accurate reproduction parts for classic vehicles, including a huge variety of items that are no longer available from the dealer.
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Rein – Electric Water Pump (Part No.WPR0046)
from
$848.99
Rein Automotive OE water pumps are designed to be direct replacements for OE water pumps and water pump assembles. Rein water pumps are made to original casting specifications to ensure proper fitments for easy installation, proper water flow and maximum cooling. Pumps include the necessary OE style gaskets and/or O-rings to replace the old worn out parts. Seals are made from a high quality silicate carbide compound. Bearings of OE design and materials are also used to meet or exceed OEM standards and ensure long service life. Our quality water pumps aim to provide the professional repair technician and vehicle owner the peace of mind and trust that is expected from an OE quality component. Please read and follow all enclosed instructions to maximize pump life and validate warranty.
Product Features:
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Product Features:
- OE high performance motor
- Pump uses OE designed bearings by ensuring to extend pumps service life
- Includes replacement seals, if applicable
- Read and follow all enclosed instructions to maximize pump life and to qualify for extended warranty
Carquest Premium – Engine Water Pump: New, Gasket/Seals Included (Part No.T1169)
from
$74.99
Carquest Premium water pumps are 100% new, high-quality parts that meet or exceed original equipment (O.E.) specifications. All components, including the housing, hub, bearings, gaskets and seals are designed for long-lasting service life. These water pumps are supplied with the gaskets or seals necessary for installation. Our Carquest Premium water pumps undergo stringent testing to ensure superior performance that we stand behind with an industry-leading warranty.
Product Features:
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Product Features:
- 100% tested for reliable performance
- Durable housing features precisely machined mounting surface for proper sealing and fitment
- Equipped with weep chamber or similar feature to help prevent unnecessary replacement
- Included heavy-duty unitized bearings, pressed-on hubs and optimal impeller clearance for a long-lasting water pump
- All gaskets or seals necessary for water pump are included
- This pump is driven by the accessory belt and we recommend replacement if nearing service recommendation
- This pump is driven by the timing chain; see vehicle manufacturer recommendation for replacement of timing components
- This pump is driven by the timing belt; see vehicle manufacturer recommendation for replacement of timing components
Carquest Premium – Engine Auxiliary Water Pump (Part No.T7080)
from
$548.99
This new pump is 100% tested to ensure the highest quality. Each unit is built to meet or exceed all OE specifications and is validated for fit, form, and function. Application specific design to ensure a perfect fit and correct operation for unsurpassed quality.
Product Features:
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Product Features:
- All components necessary for installation are supplied with pump
- Follow all enclosed instructions to maximize pump life and validate warranty
- Specialized for vehicles using supplemented cooling for the engine or components
- Plastic housing
Dorman – Electric Engine Water Pump (Part No.599-978)
from
$479.99
This engine water pump is designed to match the fit and function of the original pump on specified applications, and is engineered for reliable performance and durability.
Product Features:
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Product Features:
- Direct replacement – this engine water pump is designed to match the fit and function of the original pump on specified applications
- Restores functionality – reliable replacement for an original part that has failed due to worn bearings or contaminated electronics
- 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
Rein – Electric Water Pump (Part No.WPR0049)
from
$872.99
Rein Automotive OE water pumps are designed to be direct replacements for OE water pumps and water pump assembles. Rein water pumps are made to original casting specifications to ensure proper fitments for easy installation, proper water flow and maximum cooling. Pumps include the necessary OE style gaskets and/or O-rings to replace the old worn out parts. Seals are made from a high quality silicate carbide compound. Bearings of OE design and materials are also used to meet or exceed OEM standards and ensure long service life. Our quality water pumps aim to provide the professional repair technician and vehicle owner the peace of mind and trust that is expected from an OE quality component. Please read and follow all enclosed instructions to maximize pump life and validate warranty.
Product Features:
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Product Features:
- OE high performance motor
- Pump uses OE designed bearings by ensuring to extend pumps service life
- Includes replacement seals, if applicable
- Read and follow all enclosed instructions to maximize pump life and to qualify for extended warranty
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
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.
Product Features:
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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 – 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
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.
Product Features:
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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 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:
KAI – Coolant Reservoir (Part No.BM3014102)
from
$66.99
New Platinum Pro Coolant Recovery Tank, Models With 6 Cylinder Engine
Product Features:
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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
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.
Product Features:
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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
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.
Product Features:
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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
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.
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
URO Parts – Expansion Tank (Part No.17137787039)
from
$34.99
For European vehicles, A.P.A. manufactures the URO Parts brand of quality replacement parts, which meet or exceed OEM specifications. URO Parts components are ideal for both professional and DIY vehicle repair, and are often the exclusive aftermarket alternative to overpriced ¿Genuine¿ components. By reducing deferred maintenance with URO Parts, you will increase the bottom line of your business. With its URO Premium line, A.P.A. offers problem-solving upgraded components that are superior to failure-prone OEM parts in design and/or materials. A.P.A. is so confident in the longevity and reliability of URO Premium products. URO Parts also specializes in accurate reproduction parts for classic vehicles, including a huge variety of items that are no longer available from the dealer.
See More
Rein – Expansion Tank (Part No.EPT0018)
from
$64.99
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:
See More
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
Popular 2018 BMW X3 Engine Cooling Parts Categories
Most Popular Radiators for 2018 BMW X3s
Enhance your 2018 BMW X3 with one of the 2 Radiators we have in stock, starting at just $279.99.
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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Carquest Premium – Radiator (Part No.4113903)
from
$279.99
A global leader in the manufacture and distribution of aftermarket cooling products for automotive, heavy truck, and industrial applications. Specialized in the production of OE-quality Radiators, Condensers, and Charge Air Coolers for US and international markets, covering over 10,000 part numbers worldwide.
Product Features:
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Product Features:
- We design and manufacture all our radiators to meet or even exceed Original Equipment specifications. We take pride in producing the most reliable replacement parts in the market.
- Thermal expansion cuts allow for longer life and reduced failure rates by allowing improved core expansion and contraction during normal heat cycles.
- Our B-Type tubes feature central reinforcement to provide greater tolerance to pressure. Stronger tube design means drastically reduced probability of tube failure.
- We use longer header tabs for increased pressure resistance. This reduces the potential for tank to header leaks.
- Our deep extrusion header provides a stronger tube to header joint which is more resistant to the effects of vibration and thermal tube expansion, virtually eliminating tube to header leaks.
- Our fin edges are folded for increased stability and heat disbursement properties.
- Our included “multi-fit” attachments allow one radiator to cover multiple vehicle applications without sacrificing OE fit. This results in wider vehicle coverage with substantially less inventory.
Best-Selling 2018 BMW X3 Coolant Reservoir Caps
Upgrade your X3 with one of our 3 best-selling Coolant Reservoir Caps.
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:
See More
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:
See More
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:
See More
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.
Top-Quality Coolant Temperature Sensors for 2018 BMW X3s
Choose a high-quality OEM or aftermarket Coolant Temperature Sensor for BMW X3s and enjoy top-notch performance from $96.99.
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:
See More
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
Our Top Pick for a 2018 BMW X3 Coolant Reservoir
Invest in a
durable Coolant Reservoir for your 2018 BMW, knowing you’re getting trusted brands and expert craftsmanship.
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:
See More
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.
Our Water Pumps for 2018 BMW X3s
Make a smart move for your 2018 BMW X3 with our Water Pump for $548.99.
Carquest Premium – Engine Auxiliary Water Pump (Part No.T7080)
from
$548.99
This new pump is 100% tested to ensure the highest quality. Each unit is built to meet or exceed all OE specifications and is validated for fit, form, and function. Application specific design to ensure a perfect fit and correct operation for unsurpassed quality.
Product Features:
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Product Features:
- All components necessary for installation are supplied with pump
- Follow all enclosed instructions to maximize pump life and validate warranty
- Specialized for vehicles using supplemented cooling for the engine or components
- Plastic housing
FAQs for 2018 BMW X3 Engine Cooling Parts
What are the best-selling Engine Cooling Parts for 2018 BMW X3s?
Out of 10 Engine Cooling Parts that fit 2018 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 2018 BMW X3 Engine Cooling Parts?
The prices of Engine Cooling Parts for the 2018 BMW X3 range from $24.99 up to $548.99 for the most premium parts.
What is the average price of an Engine Cooling Part for a 2018 BMW X3?
The average price for Engine Cooling Parts for the 2018 BMW X3 is $160.89. 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 2018 BMW X3?
The cheapest 2018 BMW X3 Engine Cooling Parts we carry are:
- Cap-Expansion Tank (11324354) – $24.99
- Radiator Cap: 20 PSI (11357603) – $26.99
- Radiator Coolant Hose Flange: With Seal (50234168) – $26.99
- Radiator Cap: 20 PSI (50040425) – $27.99
- Engine Coolant Temperature Sensor (50047111) – $96.99
Does Advance Auto Parts sell Engine Cooling Parts for any other 2018 BMW models?
Yes. We stock Engine Cooling Parts for 52 other popular 2018 BMW models. Some of the most popular are 2018 M3 Engine Cooling Parts, 2018 530i Engine Cooling Parts, 2018 330i Engine Cooling Parts, 2018 X5 Engine Cooling Parts, and 2018 M5 Engine Cooling Parts.
What types of Engine Cooling Parts do you sell for my 2018 BMW X3?
As of 11/2/25, these are some of the most in-demand types of Engine Cooling Parts for a 2018 BMW X3:
Can I get help with 2018 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.