What is the construction and purpose of engine cooling?

Engine cooling is a set of parts responsible for maintaining the proper operating temperature of the powertrain. A typical system consists of a radiator, water pump, thermostat, hoses, fan, sensors, and an expansion tank. These elements are located mainly in the engine compartment and connected by a coolant circuit.

What is engine cooling used for?

Engine cooling is used to absorb excess heat from the block and cylinder head and to stabilize the operating temperature during driving and when stationary. An efficient system limits the risk of overheating and also affects the proper operation of the heater, fan, and control sensors. Without proper cooling, engine performance may drop, and cooperating components may fail.

What role does the expansion tank play in the cooling system?

The expansion tank is a cooling system element that absorbs fluid volume changes resulting from temperature increases and decreases. It is used to maintain the correct fluid level and works with a pressure cap that stabilizes the system's operating conditions. Fluid levels and the condition of return hoses are often checked within its vicinity.

How to choose a cooling system part for a specific car version?

It is safest to compare the OEM number, engine version, body type, and mounting location. It is also worth checking the number of pins in the plug, pipe diameter, mounting type, and the presence of additional sensors. For parts such as a fan or auxiliary pump, the control method also matters.

What symptoms indicate cooling system problems?

Typical symptoms include rising engine temperature, fluid leaks, the fan not turning on, steam from under the hood, or the unit taking too long to warm up. In some cars, temperature sensor errors or weaker interior heating also appear. Symptoms should be analyzed in conjunction with the operation of the thermostat, water pump, and hose tightness.

What to pay attention to when installing engine cooling parts?

After installation, you must check the tightness of connections, correct seating of mounts, and the condition of seals. It is also important to top up with the correct fluid and bleed the system according to the manufacturer's procedure. In the case of electrical parts, you should additionally verify the plugs, wiring harness, and fan control operation.

Engine cooling

At the Global Parts automotive store, we offer a wide selection of original used car parts, including engine cooling components, for many popular car brands such as BMW, Mini, Mercedes, Audi, Volkswagen, and others. Each of our car parts undergoes quality control to ensure you receive a top-quality product.

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Audi A4 B8 A5 8T Coolant Pipe Water Cooling Line 2.0 TDI 03L122157Q

€23.95

Free delivery: Sep 21 – 24

If paid before 14:00

Part no. 6R0122051BP

Audi Seat Skoda VW Radiator Coolant Hose Pipe Line 2.0 TFSI 6R0122051BP

€23.95

Free delivery: Sep 21 – 24

If paid before 14:00

Part no. 079131605BB

Audi S6 C7 S7 4G Secondary Air Pump Connecting Pipe Line Hose 079131605BB

€28.95

Free delivery: Sep 21 – 24

If paid before 14:00

Part no. 06H121026AG

Audi A3 8P VW Passat B7 Water Pump Thermostat Coolant Regulator 06H121026AG

€51.95

Free delivery: Sep 21 – 24

If paid before 14:00

Part no. 8E0265381

Audi A3 8V 35 TDI Water Coolant Pipe Hose Line 8E0265381

€23.95

Free delivery: Sep 21 – 24

If paid before 14:00

Part no. 059121398B

Audi A4 B8 A5 8T Q7 4L Coolant Hose Line Pipe Tube 3.0 TDI Diesel 059121398B

€28.95

Free delivery: Sep 21 – 24

If paid before 14:00

Part no. 8K0959455F

Engine Cooling Radiator Audi A4 B8 Q5 8R Coolant Fan Motor 200W 8K0959455F

€56.95

Free delivery: Sep 21 – 24

If paid before 14:00

Part no. 06L145735H

Audi Q5 FY Oil Return Hose Pipe Line 2.0 TFSI 06L145735H

€23.95

Free delivery: Sep 21 – 24

If paid before 14:00

Part no. 06E121044D

Audi S4 B8 Engine Coolant Pipe Water Hose Line 3.0 TFSI CAKA 06E121044D

€23.95

Free delivery: Sep 21 – 24

If paid before 14:00

Part no. 8P0122051

Audi RSQ3 8U Cooling System Water Coolant Hose Pipe Line 2.5 TFSI 8P0122051

€70.95

Free delivery: Sep 21 – 24

If paid before 14:00

Part no. 06J121132G

Audi TT 8J A4 B8 Water Coolant Flange Pipe Hose Line 06J121132G

€28.95

Free delivery: Sep 21 – 24

If paid before 14:00

Part no. 06L121111M

Audi Q5 FY Water Pump Thermostat Coolant Regulator 2.0 TFSI 06L121111M

€66.95

Free delivery: Sep 21 – 24

If paid before 14:00

Part no. 04L122157BJ

Audi A5 S5 8T A6 S6 4G Engine Coolant Hose Tube Line Pipe 2.0 TDI 04L122157BJ

€23.95

Free delivery: Sep 21 – 24

If paid before 14:00

Part no. 059122445F

Audi Q7 Q8 4M 3.0 TDI Engine Coolant Hose Line Tube Pipe 059122445F

€23.95

Free delivery: Sep 21 – 24

If paid before 14:00

Part no. 8W0121674B

Audi A4 B9 Radiator Air Guide Duct Channel Cover Panel Right O/S 8W0121674B

€23.95

Free delivery: Sep 21 – 24

If paid before 14:00

Part no. 6R0959455D-1

Audi A1 8X VW Polo 6R Radiator Fan Engine CAXA Blades Fan Motor 6R0959455D

€94.95

Free delivery: Sep 21 – 24

If paid before 14:00

Part no. 7L0965561L-1

Audi A4 B7 2.0 TDI Quattro Auxiliary Additional Water Pump 7L0965561L

€23.95

Free delivery: Sep 21 – 24

If paid before 14:00

Part no. 8K0145919C

Audi A4 B8 2.0 TDI CNHC Engine Water Coolant Hose Pipe Line 8K0145919C

€56.95

Free delivery: Sep 21 – 24

If paid before 14:00

Part no. 06F129101R

Audi A3 8P TT 8J VW Golf GTI 2.0 TFSI Breather Valve Oil Separator 06F129101R

€23.95

Free delivery: Sep 21 – 24

If paid before 14:00

Part no. 3C0122101BM

Audi A3 8P Water Coolant Pipe Line Hose Cooling Unit 2.0 TDI 3C0122101BM

€23.95

Free delivery: Sep 21 – 24

If paid before 14:00

Part no. 8K0121081P

Audi A4 B8 2.0 TDI CAGA Radiator Water Coolant Pipe Hose Tube Line 8K0121081P

€23.95

Free delivery: Sep 21 – 24

If paid before 14:00

Part no. 06J121075F

Audi TT 8J A3 8P Petrol Coolant Hose Diesel Water Pipe Line Tube 06J121075F

€28.95

Free delivery: Sep 21 – 24

If paid before 14:00

Part no. 06K121059K

Audi Q3 8U VW Beetle 5C Water Coolant Hose Pipe Line 06K121059K

€28.95

Free delivery: Sep 21 – 24

If paid before 14:00

Part no. 8W0121448H

Audi A5 F5 2.0 TDI DEZE Water Coolant Hose Line Pipe Tube 8W0121448H

€23.95

Free delivery: Sep 21 – 24

If paid before 14:00

Part no. 059121064D-1

Audi A5 8T Water Hose Cooling Coolant Radiator Pipe Line 3.0 TDI 059121070J

€23.95

Free delivery: Sep 21 – 24

If paid before 14:00

Part no. 03L121031B

Audi A3 8P 2.0 TDI CFFB Diesel Coolant Water Pump 03L121031B

€23.95

Free delivery: Sep 21 – 24

If paid before 14:00

Part no. 8K0819334BB

Audi A4 B8 2.0 TDI CNHC Water Coolant Hose Line Pipe 8K0819334BB

€23.95

Free delivery: Sep 21 – 24

If paid before 14:00

Part no. 6R0122073H

Audi A1 S1 8X VW Polo 6R Seat Ibiza 6P Engine Water Coolant Hose 6R0122073H

€51.95

Free delivery: Sep 21 – 24

If paid before 14:00

Part no. 06D121082B

Audi A4 B7 2.0 TFSI BGB Coolant Hose Line Tube Pipe 06D121082B

€23.95

Free delivery: Sep 21 – 24

If paid before 14:00

Part no. 8K0121055N

Audi A4 B8 A5 8T 1.8 2.0 TFSI Petrol Engine Water Coolant Pipe Hose 8K0121055N

€32.95

Free delivery: Sep 21 – 24

If paid before 14:00

Part no. 83A816738

Audi Q3 RSQ3 F3 Petrol Hose Air Con A/C Intercooler Pipe Line 83A816738

€56.95

Free delivery: Sep 21 – 24

If paid before 14:00

Part no. 06J133781BE

Audi TT 8J Water Hose Cooling Radiator Coolant Pipe Line 06J133781BE

€23.95

Free delivery: Sep 21 – 24

If paid before 14:00

Part no. 03G906088AT

Audi A3 8P Exhaust Gas Temperature Sensor 03G906088AT

€23.95

Free delivery: Sep 21 – 24

If paid before 14:00

Part no. 03L121157AQ

Audi A4 B8 A5 8T 2.0 TDI Water Hose Cooling Radiator Pipe Line 03L121157AQ

€23.95

Free delivery: Sep 21 – 24

If paid before 14:00

Part no. 04L121157

Audi A4 B8 A6 C7 Water Coolant Pipe Hose Line Tube Right O/S 2.0 TDI 04L121157

€23.95

Free delivery: Sep 21 – 24

If paid before 14:00

Part no. 6C0122109E

Audi A1 8X 1.6 TDI Diesel Engine Water Coolant Pipe Hose Line Tube 6C0122109E

€23.95

Free delivery: Sep 21 – 24

If paid before 14:00

Part no. 1K0145832AH

Audi A3 8P 2.0 TDI Convertible Intercooler Air Pipe Hose Left N/S 1K0145832AH

€56.95

Free delivery: Sep 21 – 24

If paid before 14:00

Part no. 4G0121485BE

Audi A6 C7 A7 4G8 Water Radiator Coolant Pipe Hose Tube Line Diesel 4G0121485BE

€32.95

Free delivery: Sep 21 – 24

If paid before 14:00

Part no. 5Q0121599AA

Audi A3 S3 8V Auxiliary Water Pump Coolant Circulation Cooling Unit 5Q0121599AA

€66.95

Free delivery: Sep 21 – 24

If paid before 14:00

Part no. 04L121065AN

Audi A5 8T Water Coolant Pipe Hose Line Tube 04L121065AN

€23.95

Free delivery: Sep 21 – 24

If paid before 14:00

Part no. 8T0941717D

Audi A4 RS4 B8 Headlight Lamp Drain Hose Pipe Line Tube Left N/S 8T0941717D

€23.95

Free delivery: Sep 21 – 24

If paid before 14:00

Part no. 07K121115D

Audi RSQ3 8U Thermostat Housing Coolant Unit 2.5 TFSI Petrol 07K121115D

€142.95

Free delivery: Sep 21 – 24

If paid before 14:00

Part no. 8W0819350G

Audi A4 B9 A5 F5 Water Coolant Heater Hose Pipe 2.0 TDI 8W0819350G

€23.95

Free delivery: Sep 21 – 24

If paid before 14:00

Part no. 06L121012L

Audi A4 B9 Volkswagen Golf 8 2.0 TFSI Thermostat Coolant Water Pump 06L121012L

€75.95

Free delivery: Sep 21 – 24

If paid before 14:00

Part no. 04L121111H-1

Audi A4 B8 A5 F5 TT FV Thermostat Coolant Housing Valve 2.0 TDI 04L121111H

€23.95

Free delivery: Sep 21 – 24

If paid before 14:00

Part no. 4N0820541

Audi A7 C8 Q7 4M Temperature Sensor Interior Sensor 4N0820541

€23.95

Free delivery: Sep 21 – 24

If paid before 14:00

Part no. 4G0121481AL

Audi A6 Avant A7 Sportback Water Coolant Hose Pipe 4G0121481AL

€37.95

Free delivery: Sep 21 – 24

If paid before 14:00

Part no. 079121013

Audi S7 4G Water Pump Coolant Cooling Unit 079121013

€89.95

Free delivery: Sep 21 – 24

If paid before 14:00

Part no. 04L121026AF

Audi Q2 GA Diesel Thermostat Coolant Regulator Connector Pipe Hose 04L121026AF

€28.95

Free delivery: Sep 21 – 24

If paid before 14:00

Part no. 8K0122293B

Audi A4 B8 Q5 8R Water Cooling Coolant Flange Pipe Hose 2.0 TDI 8K0122293B

€23.95

Free delivery: Sep 21 – 24

If paid before 14:00

Part no. 03G145771Q

Audi A3 8P Diesel Engine Supply Feed Oil Hose Line Tube Pipe 03G145771Q

€37.95

Free delivery: Sep 21 – 24

If paid before 14:00

Part no. 80A145926BP

Audi Q5 FY Coolant Hose Tube Line Pipe 2.0 Diesel 80A145926BP

€23.95

Free delivery: Sep 21 – 24

If paid before 14:00

Part no. 7L8121051G

Audi Q7 Engine Cooling Radiator Coolant Hose Pipe 3.0 TDI 7L8121051G

€47.95

Free delivery: Sep 21 – 24

If paid before 14:00

Part no. 4F0121403C

Audi A6 C6 A6 S6 4F Coolant Header Tank Reservoir Expansion Bottle 4F0121403C

€23.95

Free delivery: Sep 21 – 24

If paid before 14:00

Part no. 04E121600AR

Audi A1 8X Skoda Octavia Mk3 Coolant Cooling Water Pump 1.0 TSI TFSI 04E121600AR

€42.95

Free delivery: Sep 21 – 24

If paid before 14:00

Part no. 079121678K

Audi S6 C7 S7 4G Engine Coolant Thermostat Resonator Valve 4.0 TFSI 079121678K

€146.95

Free delivery: Sep 21 – 24

If paid before 14:00

Part no. 8W0819334AE

Audi A5 F5 Coolant Water Quick Connect Heater Pipe Hose 8W0819334AE

€23.95

Free delivery: Sep 21 – 24

If paid before 14:00

Part no. 5Q0121070BQ

Audi S3 8V Water Hose Engine Coolant Cooling Pipe Line 5Q0121070BQ

€23.95

Free delivery: Sep 21 – 24

If paid before 14:00

Part no. 04L121026Q

Audi TT FV A3 8V Water Pump Thermostat Housing Pipe Connector 04L121026Q

€23.95

Free delivery: Sep 21 – 24

If paid before 14:00

Part no. 3C0122073EG

Audi TT Mk2 8J Water Coolant Pipe Hose Line 2.0 TFSI 3C0122073EG

€23.95

Free delivery: Sep 21 – 24

If paid before 14:00

Part no. 8W0122055BD

Audi A4 B9 A5 F5 Water Coolant Radiator Pipe Hose Line 3.0 TDI 8W0122055BD

€23.95

Free delivery: Sep 21 – 24

If paid before 14:00

Part no. 04L121065AK

Audi A5 8T Heater Water Cooling Coolant Pipe Hose Line 04L121065AK

€23.95

Free delivery: Sep 21 – 24

If paid before 14:00

Part no. 07K121055A

Audi RS3 8P RSQ3 8U Engine Cooling System Coolant Hose Pipe 2.5 TFSI 07K121055A

€42.95

Free delivery: Sep 21 – 24

If paid before 14:00

Part no. 1K0121063J

Audi TT 8J Water Coolant Hose Pipe Line Tube 1K0121063J

€23.95

Free delivery: Sep 21 – 24

If paid before 14:00

Part no. 079121014M

Audi A7 S7 4G 4.0 TFSI Water Pump Coolant Cooling Unit 079121014M

€89.95

Free delivery: Sep 21 – 24

If paid before 14:00

Part no. 1K0122447HC

Volkswagen Audi Seat Skoda Water Hose Radiator Coolant Pipe Line 1K0122447HC

€23.95

Free delivery: Sep 21 – 24

If paid before 14:00

Part no. 4G0317818AF

Audi RS6 C7 Oil Pipe Line Tube Hose Automatic Gearbox Transmission 4G0317818AF

€32.95

Free delivery: Sep 21 – 24

If paid before 14:00

Part no. 8K0121003AD

Audi A7 4G8 Engine Cooling Radiator Twin Coolant Fan Diesel 8K0121003AD

€42.95

Free delivery: Sep 21 – 24

If paid before 14:00

Part no. 4G0145919AC

Water Pipe Audi A6 C7 A7 4G 2.0 TDI Hose Engine Cooling Coolant Line 4G0145919AC

€47.95

Free delivery: Sep 21 – 24

If paid before 14:00

Part no. 8R0121101J

Audi Q5 8R 2.0 TDI Coolant Water Hose Line Tube Pipe 8R0121101J

€23.95

Free delivery: Sep 21 – 24

If paid before 14:00

Part no. 8K0121207B-3

Audi A5 8T Engine Cooling Radiator Coolant Fan Air Flap Ring AD1261 993332N

€32.95

Free delivery: Sep 21 – 24

If paid before 14:00

Part no. 04L121111H

Audi A4 B8 TT FV Thermostat Coolant Housing Valve 2.0 TDI 04L121111H

€23.95

Free delivery: Sep 21 – 24

If paid before 14:00

Part no. 1K0122051AE

Audi A4 B7 Water Hose Cooling Coolant Radiator Pipe Line 1K0122051AE

€23.95

Free delivery: Sep 21 – 24

If paid before 14:00

Part no. 1K0122051FE

Audi TT 8J MK2 Water Hose Cooling Coolant Radiator Pipe Line 1K0122051FE

€23.95

Free delivery: Sep 21 – 24

If paid before 14:00

Part no. 8K0122101B

Audi A4 B8 A5 8T Heater Water Cooling Coolant Pipe Hose Line 3.0 TDI 8K0122101B

€37.95

Free delivery: Sep 21 – 24

If paid before 14:00

Part no. 4G0121049AG

Audi A6 C7 2.0 TDI CGLC Water Radiator Coolant Pipe Hose Tube Line 4G0121049AG

€23.95

Free delivery: Sep 21 – 24

If paid before 14:00

Part no. 06F121065H

Audi A3 8P TT 8J VW Golf GTI 2.0 TFSI Coolant Water Pipe Hose Line 06F121065H

€42.95

Free delivery: Sep 21 – 24

If paid before 14:00

Part no. 06K121075P

Audi A3 S3 8V Water Hose Radiator Coolant Pipe Line 2.0 Petrol 06K121075P

€32.95

Free delivery: Sep 21 – 24

If paid before 14:00

Part no. 06K103495BL

Audi A3 8V A4 B9 Engine Oil Separator Breather Petrol 2.0 TFSI DNUE 06K103495BL

€37.95

Free delivery: Sep 21 – 24

If paid before 14:00

Part no. 079121010B-1

Audi S6 C7 S7 4G S8 D4 Water Coolant Pump Cover Lid 4.0 TFSI Petrol 079121010B

€56.95

Free delivery: Sep 21 – 24

If paid before 14:00

Part no. 5N0122109AE

Audi Q3 8U Coolant Hose Radiator Cooling Water Pipe Line 5N0122109AE

€23.95

Free delivery: Sep 21 – 24

If paid before 14:00

Part no. 8V0121109

Audi A3 RS3 8V 8Y Water Coolant Hose Pipe Hose Line 2.5 TFSI 8V0121109

€23.95

Free delivery: Sep 21 – 24

If paid before 14:00

Part no. 06D121497A

Audi A4 B7 Turbocharger Water Coolant Pipe Hose Line 2.0 TFSI 06D121497A

€28.95

Free delivery: Sep 21 – 24

If paid before 14:00

Part no. 8K0121403Q

Audi A4 B8 8K A5 8T Water Coolant Expansion Reservoir Tank 8K0121403Q

€23.95

Free delivery: Sep 21 – 24

If paid before 14:00

Part no. 5Q0122157AB

Coolant Pipe Audi S1 8X S3 8V VW Golf R Mk7 2.0 TSI TFSI Water Hose 5Q0122157AB

€23.95

Free delivery: Sep 21 – 24

If paid before 14:00

Part no. 8W0819011A

Audi A6 C8 Additional Radiator Auxiliary Heater Element 8W0819011A

€23.95

Free delivery: Sep 21 – 24

If paid before 14:00

Part no. 059121111L

Audi A4 B7 2.7 TDI BPP Diesel Engine Thermostat Housing 059121111L

€23.95

Free delivery: Sep 21 – 24

If paid before 14:00

Part no. 079121071BN

Audi A5 S5 8T 4.2 V8 FSI Solid Coolant Pipe Water Hose Line 079121071BN

€28.95

Free delivery: Sep 21 – 24

If paid before 14:00

Part no. 4G0122101AE

Water Hose Audi A4 B8 A6 C7 2.0 TDI Cooling Radiator Pipe Line 4G0122101AE

€23.95

Free delivery: Sep 21 – 24

If paid before 14:00

Part no. 06H145771

Audi A4 B8 Turbocharger Oil Feed Tube Pipe Line Hose 1.8 TFSI Petrol 06H145771

€32.95

Free delivery: Sep 21 – 24

If paid before 14:00

Part no. 04L121071E

Audi A3 8V VW Golf Mk7 Thermostat Housing Coupling 2.0 TDI 04L121071E

€23.95

Free delivery: Sep 21 – 24

If paid before 14:00

Part no. 1J0959481A

Audi TT 8N Radiator Fan Switch Temperature Sensor 1J0959481A

€23.95

Free delivery: Sep 21 – 24

If paid before 14:00

Part no. 5N0121447Q

Audi Q3 8U Water Coolant Pipe Hose Line 2.0 TDI 5N0121447Q

€23.95

Free delivery: Sep 21 – 24

If paid before 14:00

Part no. 7L6121212B

Audi Q7 4L 4.2 TDI Diesel Additional Radiator Right O/S Auxiliary 7L6121212B

€37.95

Free delivery: Sep 21 – 24

If paid before 14:00

Part no. 05L121011D

Audi A4 B9 Volkswagen Arteon 3H Engine Coolant Water Pump 2.0 TDI 05L121011D

€142.95

Free delivery: Sep 21 – 24

If paid before 14:00

Part no. 4G0317021M

Audi A7 A6 4G Gearbox Oil Cooler 3.0 Diesel 4G0317021M Automatic Transmission

€23.95

Free delivery: Sep 21 – 24

If paid before 14:00

Part no. 8K0121049AF

Audi A4 B8 2.0 TDI Water Coolant Hose Tube Line Pipe 8K0121049AF

€23.95

Free delivery: Sep 21 – 24

If paid before 14:00

Part no. 5N0122051BL

Audi Q3 8U Water Hose Cooling Radiator Coolant Pipe Line 5N0122051BL

€23.95

Free delivery: Sep 21 – 24

If paid before 14:00

Part no. 06J133781BD

Audi TT 8J Water Hose Cooling Radiator Coolant Pipe Line 06J133781BD

€23.95

Free delivery: Sep 21 – 24

If paid before 14:00

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