What is the construction and purpose of heat exchangers?

Heat exchangers are components of the cooling, heating, or lubrication system whose task is to transfer thermal energy between two media. A typical element consists of a working core, flow channels, connections, and a housing or mounting points. In a car, they can be mounted near the engine, gearbox, or inside the heater housing.

What are heat exchangers used for?

Heat exchangers are used to stabilize the operating temperature of the vehicle's most important systems. Thanks to them, oil, coolant, and cabin air reach the parameters needed for the proper operation of the engine, gearbox, and interior heating. Their operation also affects the effectiveness of window defrosting and driving comfort.

What is the construction and function of a heat exchanger core?

The heat exchanger core is the essential working part where heat transfer occurs. It consists of channels, thin heat-conducting walls, and connectors supplying the medium. Its design affects flow efficiency, system tightness, and fitment to the housing or connection hoses.

How to choose a heat exchanger for a specific car version?

It is safest to compare the OEM number, engine version, fuel type, gearbox type, and mounting location. In many models, the same production year may come with different variants of connectors, housings, and mounts. Checking interchangeable numbers and VIN compatibility is also helpful.

What symptoms indicate wear or malfunction of a heat exchanger?

Most often, these are weaker cabin heating, unstable engine operating temperature, coolant or oil leaks, and a decrease in heat exchange effectiveness. Symptoms may also include fogged windows and uneven heating system operation. It is then worth checking the exchanger itself as well as hoses, seals, and flow control elements.

What data in the product offer helps check heat exchanger compatibility?

Information about the brand, condition, OEM part number, interchangeable numbers, location on the vehicle, fuel type, and gearbox type is most useful. Such data makes it easier to compare the part with the removed element. During installation, the layout of connections and compatibility with the housing and hoses also matter.

Heat exchangers

At Global Parts, we offer a wide selection of original used car parts, including heat exchangers for many popular car brands such as BMW, Mini, Mercedes, Audi, Volkswagen, and others. Our heat exchangers undergo quality control to ensure you receive a top-quality product.

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Matrix Heater Radiator BMW E81 X1 E84 E87 E90 E91 Heater Exchanger 9123506

£18.95

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BMW E81 E84 E87 E90 E91 Denso Heater Radiator Heating Part

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£13.95

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£13.95

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Audi Q7 4L Heater Matrix Element Unit Heat Exchanger Radiator 7H1819121

£23.95

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BMW F10 F11 Electric Auxiliary Heating Heater Unit 3296700 9163371

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AUDI Q7 4L 3.0 TDI Parking Auxiliary Heater Diesel Webasto C 4L0815071H

£108.95

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Audi A4 B8 Heater Matrix Element Unit Heat Exchanger Radiator 8K0898037A

£28.95

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BMW F45 B38X Hybrid Auxiliary Electrical Coolant Water Heater 9371799

£94.95

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£13.95

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Volkswagen Touareg 7L Webasto Additional Auxiliary Heater 3.0 TDI 7L6815071G

£42.95

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Mercedes W211 Diesel Heater Matrix Heat Exchanger Radiator A2118300461

£23.95

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Mercedes W907 W910 Heater Matrix Core Mk3 A0008355600

£56.95

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Volkswagen Seat Audi A3 8P Heater Matrix Unit Heat Exchanger 1K0819031D

£13.95

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BMW Z4 E85 E86 1 Air Conditioning Heater Evaporator 6927613

£13.95

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VW Volkswagen Touareg 7P Heat Exchanger Heater Matrix Unit 7P0819031A

£56.95

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Part no. 1K0819031B

Volkswagen Golf 1K Heater Matrix Element Unit Heat Exchanger Radiator 1K0819031B

£18.95

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Mercedes W204 Heating Element Rod Windscreen Washer Fluid Tank A2108690308

£32.95

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Heating Element Mercedes W211 C219 Heater Matrix Heating Pad A2118300861

£13.95

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Heat Exchanger Mercedes W177 W118 W247 Heater Radiator Matrix A2478304502

£42.95

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Mercedes Vito W639 Air Conditioning Panel Climate Control Heater A6394461229

£18.95

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Heat Exchanger Mercedes W205 Air Conditioner Heater Radiator A/C A0998300061

£37.95

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Audi A1 8X Heater Matrix Core Radiator Heat Heating Exchanger 6R0819031

£13.95

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Heat Exchanger Mercedes W205 Air Conditioner Heater Radiator A0998300061

£37.95

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Part no. RHD-8E2820031A

Audi A4 B7 Air Conditioning Heater Matrix Heat Exchanger Unit 8E2820031A

£23.95

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Heater Mercedes W205 Booster Heater Additional Auxiliary Heater A2058308600

£13.95

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Part no. 4H0819011

Audi A8 D4 4H Electric Heater Matrix Auxiliary Heating Element Unit 4H0819011

£13.95

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Mercedes-Benz A B Class W169 W245 Heater Radiator Matrix A1698300661

£28.95

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Part no. 4H2898037

Audi A8 D4 4H Heat Exchanger Heater Matrix Element Unit 4H0898037

£18.95

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Part no. AV6N-19B634-AA

Ford Transit Mk8 Heater Blower Fan Motor Unit Actuator AV6N-19B634-AA

£13.95

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Ford Transit Connect Fresh Air Electric Preheater System BK21-18K463-CB

£28.95

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Porsche Cayenne 9PA 957 Webasto Auxiliary Heater Pump unit 3.0 Diesel 7L5815071

£180.95

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Part no. 7E0815071A

VW Volkswagen Transporter T5 T6 Diesel Webasto Heater Auxiliary 7E0815071A

£284.95

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Part no. A2028300461

Heat Exchanger Mercedes SLK R170 W202 Heater Radiator A2028300461

£23.95

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Part no. 1718213

Ford Ranger Mk3 Heater Regulator Motor Unit AB39-19E616-AA

£28.95

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Part no. XH42-9J294-CB

Land Rover Range Rover L322 Webasto Auxiliary Pre Heater XH42-9J294-CB

£113.95

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Part no. 7P0963235

Volkswagen Touareg 7P Electric Heater Radiator Matrix Auxiliary 7P0963235

£18.95

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Mercedes W639 Air Conditioning Heating Evaporator A0018305858

£37.95

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Part no. 7H0815071F

Volkswagen Transporter T5 Webasto Auxiliary Heater Diesel 7H0815071F

£142.95

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Auxliary Heater BMW X5 E70 F15 Electric Right O/S Air Duct Vent Blower 6954488

£13.95

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Porsche Cayenne 92A Auxiliary Heater Pump Heating Unit 4.8 V8 7P0815008A

£189.95

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Part no. A2118300458

Mercedes CLS C219 Air Conditioning Heater Matrix Evaporator Diesel A2118300458

£28.95

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Part no. A1698300261-1

Mercedes W169 W245 Heater Booster Matrix Electric Auxiliary A1698300861

£13.95

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Part no. A4518350101

Smart Fortwo C451 Heater Matrix Heat Exchanger Radiator A4518350101

£47.95

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Part no. 3M51-18K463-FD

Ford Kuga C394 Heater Matrix Preheater Radiator Auxiliary Heater 3M51-18K463-FD

£13.95

Free delivery: Jul 02

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Part no. LR036381

Range Rover Discovery Sport L494 Heater Radiator Resistor PTC Unit LR036381

£94.95

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Part no. JEP500090

Land Rover Discovery 4 L319 Heater Matrix Core 3.0 V6 5H2218D557BB

£80.95

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Part no. rhd-6992608

Heater Matrix BMW G11 G30 Air Conditioning Blower Unit Housing Diesel 6992608

£75.95

Free delivery: Jul 02

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Part no. RHD-A2218302061

Mercedes W221 OM642 Heat Exchanger Diesel A2218302000

£156.95

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Part no. 5A0DB46

BMW F70 F74 F78 Gran Coupé MINI F66 F65 Condensation Water Drain Cap 5A0DB46

£13.95

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Part no. K9873007

Range Rover Evoque L538 Interior Heater Matrix Radiator Core BEHR K9873007

£18.95

Free delivery: Jul 02

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Part no. 420898037A-1

Audi R8 42 RS6 C6 Air Conditioning Heat Exchanger Hose 420898037A

£47.95

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Part no. 9178047

BMW X5 E70 Webasto Auxiliary Heater Thermo Top V M57 M57N 3.0d Diesel 9178047

£284.95

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Part no. rhd-97191-2B000

Hyundai H - 1 Santa Fe IV Heat Exchanger Heater Ptc Radiator 97191-2B000

£23.95

Free delivery: Jul 02

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Part no. RHD-4M5H-19860-BE

Ford Focus Mk2 Air Conditioning Heater Matrix Core 4M5H-19860-BE

£23.95

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Part no. LR002632

Land Rover Freelander 2 L359 Front Dash Matrix Heater Interior LR002632

£32.95

Free delivery: Jul 02

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Part no. BG9N-18D612-AA

Range Rover Evoque L538 Heater Matrix Core 2.2 TDCI BG9N-18D612-AA

£13.95

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Part no. A1698300261

Mercedes W169 W245 Heater Booster Matrix Electric Auxiliary A1698300261

£13.95

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Part no. 420898037A

Audi A6 C6 4F Air Conditioning Heat Exchanger Hose 420898037A

£37.95

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Part no. RHD-BK21-18D361-B

Ford Transit Custom Heater Matrix Unit 2.2 TDCi BK21-18D361-B

£85.95

Free delivery: Jul 02

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Part no. RHD-2Q2819031

Audi A1 GB Interior Heater Radiator Auxiliary Matrix 2Q2819031

£28.95

Free delivery: Jul 02

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Part no. A0038357601

Mercedes Vito W639 Heat Exchanger Heater Matrix Unit A0038357501

£18.95

Free delivery: Jul 02

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Part no. 5B51867

BMW U06 X1 U11 Electric Auxiliary Heater Heating Module 5B51867

£284.95

Free delivery: Jul 3 – 10

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Part no. A2108300561

Mercedes-Benz E-Class W210 Heater Matrix Heat Exchanger Radiator A2108300561

£37.95

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Part no. A2438301500

Heat Exchanger Mercedes H243 Air Conditioning Heater Unit A/C A2438301500

£161.95

Free delivery: Jul 3 – 10

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Part no. A2058308600-1

Heater Mercedes W205 Booster Heater Additional Auxiliary Heater A2058308600

£13.95

Free delivery: Jul 02

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BMW F20 F20 LCI F21 F30 F31 F32 F33 Electric Auxiliary Heater Matrix 9230594

£13.95

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Mercedes W415 Heat Exchanger Heater Blower Radiator A4158304800

£13.95

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Air Duct BMW X5 E70 X6 E71 Electric Heater Floor Vent Front Left N/S 6954487

£13.95

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Ford Focus Mk2 Kuga Mk1 Heater Matrix Radiator 3M5H-18B539-DB

£37.95

Free delivery: Jul 02

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Audi A6 C6 Electric Additional Auxiliary Heater Booster 4F0819011

£18.95

Free delivery: Jul 02

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Volkswagen Golf Passat Tiguan Interior Heater Electric Matrix 1K0963235H

£18.95

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Part no. A1698300261-2

Mercedes W169 W245 Heater Booster Matrix Electric Auxiliary A1698300861

£13.95

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Part no. RHD-1J2819031B

Audi TT 8N Heat Exchanger Heater Matrix Cooling Element Unit 1J2819031B

£28.95

Free delivery: Jul 02

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BMW Mini Cooper One D R55 R56 R57 R58 R59 R60 R61 Auxiliary Heater 3422661

£13.95

Free delivery: Jul 02

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Part no. 4L0815071G

Audi Q7 4L Webasto Auxiliary Additional Pre Heater Diesel 4L0815071G

£94.95

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Part no. 5Q0963235C

Skoda Octavia 5E Heater Matrix Element Heating Unit 5Q0963235C

£18.95

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Audi A6 C7 2.0 TDI Electric Core Heater Matrix Auxiliary Element 4G0819011A

£18.95

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Audi A5 8T Electric Auxiliary Heater Hybrid Heater Element 8K0819011

£13.95

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Audi A5 8T Heater Matrix Connecting Pipe Trim Upper Cover 8K0971824AD

£13.95

Free delivery: Jul 02

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Volkswagen Golf Tiguan Beetle Heater Matrix Unit Heat Exchanger 1K0819031E

£32.95

Free delivery: Jul 02

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Land Rover Range Rover Sport L494 Heater Core Matrix CPLA-18476-AA

£156.95

Free delivery: Jul 02

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Mercedes-Benz A B Class W169 W245 Heater Radiator Matrix Petrol A1698300661

£18.95

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Mini R50 R52 R53 Heater Matrix Radiator Heat Exchanger 1497527

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Showing 1-99 of 141 products

Heat exchangers for efficient vehicle heating and cooling

Airflow sensors for proper ventilation

Heat exchangers are key components in cooling, heating, and air conditioning systems, responsible for transferring heat between different fluids or gases. Their primary task is to ensure the correct operating temperature of the engine, air conditioning, or other thermal systems, which directly affects the vehicle's efficiency and durability. In the Global Parts automotive store, you will find a wide selection of used car parts, including heat exchangers, perfectly matched to brands such as BMW, Audi, Mercedes, Volkswagen, Mini, and others.

Construction and operating principle of a car heat exchanger

A car heat exchanger is a structural component that enables controlled thermal energy transfer between two media, most commonly coolant, engine oil, transmission oil, or air. In practice, this means stabilizing the operating temperature of key systems, cabin heating, or air conditioning. A typical heat exchanger operates in a temperature range of 80 to 110°C in the engine cooling system or 70–120°C in the engine and transmission oil circuit. An example is the BMW E60 heat exchanger, used in versions such as the 530d, where it is responsible for stabilizing oil temperature in the drivetrain and working with the radiator and lubrication system.

What functions do heat exchangers perform?

Heat exchangers play a key role in temperature management in vehicles:

Heat absorption and transfer – they move heat from one medium to another, allowing for effective cooling or heating.
Maintaining optimal operating temperature – they ensure the proper functioning of the engine, gearbox, air conditioning, or heating system.
Increasing thermal system efficiency – they improve cooling or heating effectiveness, minimizing energy loss.
Component protection – they prevent overheating and excessive wear of key vehicle elements.

Function of heat exchangers in cabin heating and fluid circuits

Heat exchangers are used to capture thermal energy from one circuit and transfer it to another without mixing the working media. In the cabin heating system, such a component transfers heat from the coolant to the air pushed by the blower, and in the oil system, it stabilizes the lubricant temperature. For parts such as an Audi A6 C6 heater core, it is particularly important to compare the OEM number, the layout of the connectors, and compatibility with the air conditioning version and heater housing.

Comparison of heat exchanger types used in cars

Exchanger type	Main application	Working media	What to check before purchase
Oil-to-liquid exchanger	Engine oil temperature stabilization	Engine oil and coolant	OEM number, connection diameters, mounting type, housing tightness
Air-to-liquid exchanger	Vehicle interior heating	Coolant and air	Core dimensions, connector layout, compatibility with air vent housing
Transmission oil exchanger	Transmission oil cooling	Transmission oil and coolant	Gearbox type, mounting points, connection hoses

Heat exchanger in the BMW E60 – application and compatibility

In BMW 5 Series E60 models, the heat exchanger plays a particularly important role in vehicles with diesel engines, such as the BMW E60 530d, where there is increased thermal load on the oil system. The BMW E60 530d heat exchanger works directly with the lubrication and cooling system, stabilizing oil temperature even during prolonged highway driving. In versions with an automatic transmission, a BMW E60 automatic transmission heat exchanger is also used, which helps maintain the correct transmission oil temperature, translating into smoother gear changes and efficient operation of the entire drivetrain. These types of exchangers are designed for specific engine and gearbox generations, which is why matching the model, capacity, and drive type is crucial.

Why is it worth taking care of heat exchangers?

Damage or malfunction of a heat exchanger can lead to problems with the vehicle's thermal systems. Typical symptoms of failure include:

Engine overheating – an ineffective heat exchanger can cause the coolant temperature to rise.
Lack of cabin heating – the exchanger may inefficiently transfer heat to the heating system.
Coolant or oil leaks – mechanical damage to the exchanger can lead to leaks.
Irregular air conditioning operation – reduced cooling efficiency may indicate a problem with the exchanger. If a replacement is needed, at Global Parts you will find suitable used car parts that will restore full functionality to your thermal systems.

Core construction and components working with the heat exchanger

The heat exchanger core is the working part with channels and thin walls through which the fluid or oil flows, transferring temperature to the second medium. This element usually works with hoses, seals, the air vent housing, and, depending on the system, also with heater control valves and temperature sensors. When choosing an element like a BMW E60 heater core, it is worth checking the pipe layout, mounting location, and compatibility with the engine version and interior equipment type.

How to choose the right heat exchangers?

When choosing heat exchangers, several key aspects should be considered:

Matching the vehicle model – every thermal system has its specific technical requirements. In the Global Parts automotive store, you will find heat exchangers perfectly matched to BMW, Audi, Mercedes, Volkswagen, Mini, and others.
Technical condition – used exchangers should be fully functional, free from mechanical damage and corrosion.
Exchanger type – choose the appropriate type of exchanger depending on its application.

Matching a heat exchanger by VIN, OEM, and vehicle system

Matching a heat exchanger is based primarily on the engine configuration and drivetrain type, not just the vehicle brand. In practice, it is worth comparing the OEM part number, interchangeable numbers, location on the vehicle, fuel type, and gearbox type. If a component such as an E90 heater core is sought, the housing version, connector position, and compatibility with adjacent elements, such as blowers and fans or cabin and pollen filters, must be verified.

Why choose used heat exchangers?

Used car parts, such as used heat exchangers, are an economical solution that allows for savings while maintaining high quality. By choosing used thermal system components, you gain:

Lower costs – used exchangers are significantly cheaper than new ones but offer high quality.
Ecology – recycling parts supports environmental protection and reduces waste.
Wide offer – in our store, you will find heat exchangers for many car brands.

How to maintain heat exchangers?

To ensure heat exchangers work reliably for a long time, it is worth following a few rules:

Regular inspection – check the condition of the exchanger during cooling and heating system maintenance.
Keep operating fluids clean – contaminants in the coolant or oil can reduce the exchanger's efficiency.
Remove external dirt – regular cleaning of the exchanger prevents the accumulation of dust and debris that can disrupt airflow.
Replace on time – worn or damaged exchangers should be replaced to avoid more serious problems with thermal systems. When servicing the system, it is also worth checking the condition of elements from the Air conditioning and heating systems section, as the efficiency of the entire circuit depends on the cooperation of several components.

FAQ

Question	Answer
What is the construction and purpose of heat exchangers?	Heat exchangers are components of the cooling, heating, or lubrication system whose task is to transfer thermal energy between two media. A typical element consists of a working core, flow channels, connections, and a housing or mounting points. In a car, they can be mounted near the engine, gearbox, or inside the heater housing.
What are heat exchangers used for?	Heat exchangers are used to stabilize the operating temperature of the vehicle's most important systems. Thanks to them, oil, coolant, and cabin air reach the parameters needed for the proper operation of the engine, gearbox, and interior heating. Their operation also affects the effectiveness of window defrosting and driving comfort.
What is the construction and function of a heat exchanger core?	The heat exchanger core is the essential working part where heat transfer occurs. It consists of channels, thin heat-conducting walls, and connectors supplying the medium. Its design affects flow efficiency, system tightness, and fitment to the housing or connection hoses.
How to choose a heat exchanger for a specific car version?	It is safest to compare the OEM number, engine version, fuel type, gearbox type, and mounting location. In many models, the same production year may come with different variants of connectors, housings, and mounts. Checking interchangeable numbers and VIN compatibility is also helpful.
What symptoms indicate wear or malfunction of a heat exchanger?	Most often, these are weaker cabin heating, unstable engine operating temperature, coolant or oil leaks, and a decrease in heat exchange effectiveness. Symptoms may also include fogged windows and uneven heating system operation. It is then worth checking the exchanger itself as well as hoses, seals, and flow control elements.
What data in the product offer helps check heat exchanger compatibility?	Information about the brand, condition, OEM part number, interchangeable numbers, location on the vehicle, fuel type, and gearbox type is most useful. Such data makes it easier to compare the part with the removed element. During installation, the layout of connections and compatibility with the housing and hoses also matter.

Summary: heat exchangers in the Global Parts automotive store

Heat exchangers are essential elements of cooling, heating, and air conditioning systems that support vehicle efficiency and reliability. The Global Parts offer includes solutions matched to many brands, including Mercedes, Unbranded, Audi, as well as BMW and others. When choosing, it is worth considering the OEM number, interchangeable numbers, mounting location, and engine and gearbox version so that the part works correctly with the entire thermal system. We invite you to contact us – we are here to help you! For more information and interesting facts, we also invite you to visit our automotive blog.

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