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 S5 8T Petrol 4.2 FSI V8 Coolant Hose Rear Engine Water Pipe 079121071CF

€56.95

Free delivery: Sep 21 – 24

If paid before 14:00

Part no. 5C0965567A

Audi A3 8V Additional Water Pump 1.4 Petrol CXSA 5C0965567A

€23.95

Free delivery: Sep 21 – 24

If paid before 14:00

Part no. 079121013P

Audi S5 8T Coolant Water Pump Thermostat Assembly 079121013P

€237.95

Free delivery: Sep 21 – 24

If paid before 14:00

Part no. 8K0121049L

Audi A4 B8 Water Hose Radiator Coolant Pipe Line 2.0 TDI 8K0121049L

€23.95

Free delivery: Sep 21 – 24

If paid before 14:00

Part no. 059121075FH

Audi A6 C8 Engine Cooling Coolant Pipe Hose Tube Line 3.0 TDI DDVB 059121075FH

€75.95

Free delivery: Sep 21 – 24

If paid before 14:00

Part no. 5Q0121070AF

Audi A3 8V Water Hose Cooling Coolant Radiator Pipe Line 5Q0121070AF

€23.95

Free delivery: Sep 21 – 24

If paid before 14:00

Part no. 06L145778H

Audi A5 8T Oil Feed Hose Pipe Line 2.0 TFSI Petrol Engine 06L145778H

€23.95

Free delivery: Sep 21 – 24

If paid before 14:00

Part no. 8E0121101AA

Audi A4 B7 2.0 TDI Water Hose Cooling Coolant Radiator Pipe Line 8E0121101AA

€23.95

Free delivery: Sep 21 – 24

If paid before 14:00

Part no. 8V0121030B

Audi RS3 8V RSQ3 F3 Water Coolant Hose Pipe Line 2.5 TFSI 8V0121030B

€37.95

Free delivery: Sep 21 – 24

If paid before 14:00

Part no. 06D121085C

Audi A4 B7 A6 C6 Water Coolant Hose Line Tube Pipe 2.0 TFSI BWE 06D121085C

€23.95

Free delivery: Sep 21 – 24

If paid before 14:00

Part no. 5Q0122073R

Audi A3 8V Water Hose Coolant Pipe Line Tube 5Q0122073R

€23.95

Free delivery: Sep 21 – 24

If paid before 14:00

Part no. 06E121065N

Audi Q5 8R 3.0 TFSI Water Hose Cooling Coolant Pipe Line 06E121065N

€23.95

Free delivery: Sep 21 – 24

If paid before 14:00

Part no. 06D121065J

Audi A4 B7 A6 C6 Coolant Hose Line Tube Pipe 2.0 TFSI 06D121065J

€23.95

Free delivery: Sep 21 – 24

If paid before 14:00

Part no. 06K103495AG

Audi A3 8V Q3 8U Engine Oil Separator Breather Petrol 2.0 TFSI CULB 06K103495AG

€28.95

Free delivery: Sep 21 – 24

If paid before 14:00

Part no. 5Q0121619D

Audi A3 8V Water Hose Cooling Coolant Radiator Pipe Line 5Q0121619D

€66.95

Free delivery: Sep 21 – 24

If paid before 14:00

Part no. 06E121065Q

Audi A4 B8 A6 C7 A7 4G A8 D3 Coolant Flange Pipe Hose Line Tube 06E121065Q

€23.95

Free delivery: Sep 21 – 24

If paid before 14:00

Part no. 2Q0122109E

Audi A1 GB Water Coolant Cooling Pipe Hose Line 1.0 TFSI Petrol 2Q0122109E

€23.95

Free delivery: Sep 21 – 24

If paid before 14:00

Part no. 8K0121207A-4

Audi A4 B8 Diesel Engine Cooling Radiator Double Coolant Fan Motor 8K0121207A

€56.95

Free delivery: Sep 21 – 24

If paid before 14:00

Part no. 8K0819377C-1

Audi A5 8T Radiator Water Cooling Coolant Pipe Hose Line Diesel 8K0819377C

€28.95

Free delivery: Sep 21 – 24

If paid before 14:00

Part no. 2Q0122101BP-1

Audi A1 Coolant Cooling Hose Pipe Line 1.0 TFSI Petrol 2Q0122101BP

€56.95

Free delivery: Sep 21 – 24

If paid before 14:00

Part no. 5Q0122073AE

Audi Q3 8U Water Coolant Hose Tube Line Pipe 2.0 TDI DFTA Diesel 5Q0122073AE

€23.95

Free delivery: Sep 21 – 24

If paid before 14:00

Part no. 2Q0122157B

Audi A1 GB Coolant Cooling Hose Pipe Line 1.0 TSI Petrol 2Q0122157B

€23.95

Free delivery: Sep 21 – 24

If paid before 14:00

Part no. 3C0122101EN

Audi A3 8P 2.0 TDI Water Hose Radiator Coolant Pipe Line 3C0122101EN

€37.95

Free delivery: Sep 21 – 24

If paid before 14:00

Part no. 06H121085H

Audi A5 8T 2.0 TFSI Water Hose Cooling Radiator Coolant Pipe Line 06H121085H

€28.95

Free delivery: Sep 21 – 24

If paid before 14:00

Part no. 06H121026N-1

Audi A3 8P VW Golf MK6 Engine Coolant Water Pump 1.8 TFSI Petrol 06H121026N

€56.95

Free delivery: Sep 21 – 24

If paid before 14:00

Part no. 83A121101A

Audi RSQ3 F3 Engine Coolant Hose Tube Line Pipe 2.5 TFSI QUATTRO DNWA 83A121101A

€23.95

Free delivery: Sep 21 – 24

If paid before 14:00

Part no. 04L121113D

Audi A4 B9 Thermostat Housing Coolant Regulator 2.0 TDI DEUA 04L121113D

€70.95

Free delivery: Sep 21 – 24

If paid before 14:00

Part no. 06M121137AH

Audi A4 B9 A5 F5 Water Coolant Pipe Hose Cooling Line 06M121137AH

€28.95

Free delivery: Sep 21 – 24

If paid before 14:00

Part no. 5G0965561

Audi A3 8V 1.4 TFSI CXSA Additional Auxiliary Water Pump 5G0965561

€28.95

Free delivery: Sep 21 – 24

If paid before 14:00

Part no. 06M121071E

Audi SQ5 FY 3.0 TFSI Water Hose Cooling Radiator Coolant Pipe Line 06M121071E

€28.95

Free delivery: Sep 21 – 24

If paid before 14:00

Part no. 1K0121251AT

Volkswagen Jetta Golf 1K Audi A3 S3 Engine Radiator Water Cooler 1K0121251AT

€42.95

Free delivery: Sep 21 – 24

If paid before 14:00

Part no. 8K0121276A

Audi A4 B8 A5 8T Q5 8R Coolant Radiator Mount Holder Bracket Rubber 8K0121276A

€23.95

Free delivery: Sep 21 – 24

If paid before 14:00

Part no. 04L121064T

Audi A3 8V Engine Coolant Pipe Hose Line 04L121064T

€28.95

Free delivery: Sep 21 – 24

If paid before 14:00

Part no. 8W0122291AK

Audi A4 B9 35 TFSI DMSB Petrol Water Coolant Hose Line Tube Pipe 8W0122291AK

€37.95

Free delivery: Sep 21 – 24

If paid before 14:00

Part no. 8W0122448S

Audi A5 F5 Water Coolant Hose Line Pipe Tube 8W0122448S

€23.95

Free delivery: Sep 21 – 24

If paid before 14:00

Part no. 04E121600BE

Audi A3 8V Seat Ateca Kh7 Coolant Pump D Water Pump 04E121600BE

€28.95

Free delivery: Sep 21 – 24

If paid before 14:00

Part no. 079121102F

Audi S5 8T Engine Water Coolant Rubber Pipe Hose 4.2 FSI 079121102F

€23.95

Free delivery: Sep 21 – 24

If paid before 14:00

Part no. 06L121085K

Audi A4 B8 A5 8T Water Coolant Pipe Hose 2.0 TFSI Petrol Engine 06L121085K

€23.95

Free delivery: Sep 21 – 24

If paid before 14:00

Part no. 7L8121073A

Audi Q7 4L Engine Coolant Hose Tube Line Pipe 7L8121073A

€23.95

Free delivery: Sep 21 – 24

If paid before 14:00

Part no. 04L122157BF

Audi A4 B8 2.0 TDI CNHC Diesel Engine Water Coolant Pipe Hose Line 04L122157BF

€23.95

Free delivery: Sep 21 – 24

If paid before 14:00

Part no. 03L121132AC

Audi A4 B8 A5 8T 2.0 TDI Water Coolant Thermostat Housing 03L121132AC

€23.95

Free delivery: Sep 21 – 24

If paid before 14:00

Part no. 5Q0122157CK

Audi A3 8V Water Hose Cooling Radiator Coolant Pipe Line 2.0 TDI 5Q0122157CK

€23.95

Free delivery: Sep 21 – 24

If paid before 14:00

Part no. 4G0317818S

Audi A7 4G Oil Pipe Line Tube Hose Automatic Gearbox Transmission 4G0317818S

€23.95

Free delivery: Sep 21 – 24

If paid before 14:00

Part no. 03L121065T

Audi A3 8P 2.0 TDI Hose Thermostat Coolant Pipe Line 03L121065T

€23.95

Free delivery: Sep 21 – 24

If paid before 14:00

Part no. 8K0121081CM

Audi A4 Avant B8 S5 8T A5 S5 Engine Coolant Hose Tube Pipe Line 8K0121081CM

€51.95

Free delivery: Sep 21 – 24

If paid before 14:00

Part no. 4F0145738F

Audi A6 C6 3.0 TDI Diesel Turbo Charger Intercooler Pipe Hose Duct 4F0145738F

€23.95

Free delivery: Sep 21 – 24

If paid before 14:00

Part no. 07K121063D

Audi RSQ3 8U RS3 8P Water Coolant Pipe Hose Line Tube Petrol Engine 07K121063F

€61.95

Free delivery: Sep 21 – 24

If paid before 14:00

Part no. 8P0820741A

Audi RS3 8P Refrigerant Hose Cooling Radiator Coolant Pipe Line 8P0820741A

€47.95

Free delivery: Sep 21 – 24

If paid before 14:00

Part no. 4H0121403G

Audi A8L 4H 3.0 TDI CDTA Coolant Overflow Reservoir Expansion Tank 4H0121403G

€28.95

Free delivery: Sep 21 – 24

If paid before 14:00

Part no. 06E121065S

Audi A4 B8 A5 S5 8T Water Hose Cooling Coolant Pipe Line 3.0 TFSI 06E121065S

€23.95

Free delivery: Sep 21 – 24

If paid before 14:00

Part no. 079121065BJ

Audi S5 8T Coolant Pipe Cooler Water Hose Left N/S 4.2 Petrol CAUA 079121065BJ

€32.95

Free delivery: Sep 21 – 24

If paid before 14:00

Part no. 3C0121157AA

Audi A3 8P Engine Water Coolant Pipe Hose Line 1.9 TDI 3C0121157AA

€23.95

Free delivery: Sep 21 – 24

If paid before 14:00

Part no. 1K0121063AA

Audi A3 8P VW Golf Mk6 Seat Altea Engine Coolant Hose 1.4 Petrol 1K0121063AA

€23.95

Free delivery: Sep 21 – 24

If paid before 14:00

Part no. 8W0121207

Audi A4 B9 35 TFSI DMSB Motor Radiator Fan Engine Cooling Motor 8W0121207

€237.95

Free delivery: Sep 21 – 24

If paid before 14:00

Part no. 03G906088AP

Audi A4 B7 Exhaust Gas Temperature Sensor Unit Diesel Engine 03G906088AP

€28.95

Free delivery: Sep 21 – 24

If paid before 14:00

Part no. 059121399B

Audi A4 B8 A5 8T Q7 4L Coolant Pipe Hose Engine Cooling Line 3.0 TDI 059121399B

€23.95

Free delivery: Sep 21 – 24

If paid before 14:00

Part no. 03L121111AC

Audi A3 8P 2.0 TDI Diesel Thermostat Coolant Housing 03L121111AC

€23.95

Free delivery: Sep 21 – 24

If paid before 14:00

Part no. 8K0819334AD

Audi A4 B8 Heating Auxiliary Heater Pipe Hose Line 8K0819334AB

€23.95

Free delivery: Sep 21 – 24

If paid before 14:00

Part no. 6R0121207F

Audi A1 8X Engine Cooling Radiator Fan Shroud Panel 6R0121207F

€218.95

Free delivery: Sep 21 – 24

If paid before 14:00

Part no. 6R0122101DJ-1

Audi A1 S1 8X Water Coolant Pipe Hose Line 2.0 TFSI 6R0122101DJ

€32.95

Free delivery: Sep 21 – 24

If paid before 14:00

Part no. 7L8122096A

Audi Q7 4L Water Coolant Pipe Hose Line 3.0 TDI 7L8122096A

€51.95

Free delivery: Sep 21 – 24

If paid before 14:00

Part no. 4G0121447AL

Audi A7 4G Coolant Cooling Water Pipe Hose Line 3.0 TDI 4G0121447AL

€23.95

Free delivery: Sep 21 – 24

If paid before 14:00

Part no. 8K0145879D

Audi A4 S4 8K A5 S5 8F 8T Additional Coolant Pump Bracket Mount 8K0145879D

€75.95

Free delivery: Sep 21 – 24

If paid before 14:00

Part no. 8R0145910B

Audi Q5 8R 2.0 TDI Quattro Water Hose Coolant Pipe Line 8R0145910B

€28.95

Free delivery: Sep 21 – 24

If paid before 14:00

Part no. 8E0965557A

Audi A4 S4 RS4 B7 Coolant Pump Bracket Mount Holder Support 8E0965557A

€23.95

Free delivery: Sep 21 – 24

If paid before 14:00

Part no. 420260712B

Audi R8 42 Air Conditioning A/C Pipe Hose Cooling Line Tube 420260712B

€37.95

Free delivery: Sep 21 – 24

If paid before 14:00

Part no. 4G0122101AJ

Water Hose Audi A6 C7 A7 4G Diesel Cooling Radiator Pipe Line 4G0122101AJ

€23.95

Free delivery: Sep 21 – 24

If paid before 14:00

Part no. 059121065DT

Audi SQ5 8R 3.0 TDI CGQB Radiator Water Hose Line Tube Pipe 059121065DT

€28.95

Free delivery: Sep 21 – 24

If paid before 14:00

Part no. 8K0122055B-1

Audi A4 B8 Water Return Coolant Pipe Hose Line 2.0 TDI Diesel Engine 8K0122055B

€37.95

Free delivery: Sep 21 – 24

If paid before 14:00

Part no. 06D121111G

Audi A4 B7 Coolant Regulator Thermostat Housing Pipe 2.0 TFSI BWE 06D121111G

€23.95

Free delivery: Sep 21 – 24

If paid before 14:00

Part no. 04E121064E

Audi A3 8V Q3 8U VW Golf 5G Scirocco Mk3 Coolant Pipe Hose Tube Line 04E121064E

€23.95

Free delivery: Sep 21 – 24

If paid before 14:00

Part no. 06K109121E

Audi S3 8Y 2.0 TFSI Volkswagen Golf 8 Petrol Water Pump Cover 06K109121E

€23.95

Free delivery: Sep 21 – 24

If paid before 14:00

Part no. 8E0121058B

Audi RS4 B7 Water Coolant Cooling Pipe Hose Line 4.2 FSI Petrol 8E0121058B

€28.95

Free delivery: Sep 21 – 24

If paid before 14:00

Part no. 5Q012210GJ

Audi A3 8V Water Hose Cooling Radiator Coolant Pipe Line 5Q012210GJ

€28.95

Free delivery: Sep 21 – 24

If paid before 14:00

Part no. 05L965567A

Audi A5 F5 Electric Coolant Fluid Water Auxiliary Pump 05L965567A

€37.95

Free delivery: Sep 21 – 24

If paid before 14:00

Part no. 057121057C

Audi RSQ3 F3 2.5 TFSI Quattro Water Coolant Pipe Hose Line 057121057C

€23.95

Free delivery: Sep 21 – 24

If paid before 14:00

Part no. 06J121497J

Audi TT 8J Turbine Lubrication Inlet Oil Feed Line Pipe 06J121497J

€23.95

Free delivery: Sep 21 – 24

If paid before 14:00

Part no. 8W0122101AA

Audi S4 B9 3.0 TFSI Petrol Coolant Water Hose Line Tube Pipe 8W0122101AA

€28.95

Free delivery: Sep 21 – 24

If paid before 14:00

Part no. 07K121057A

Coolant Hose Audi RS3 8V TTRS 8S 2.5 TFSI Cooling Pipe Line 07K121057A

€23.95

Free delivery: Sep 21 – 24

If paid before 14:00

Part no. 8K0121164E

Audi A4 B8 Water Pipe Hose Line Engine Cooling Coolant Unit Hose 8K0121164E

€23.95

Free delivery: Sep 21 – 24

If paid before 14:00

Part no. 03L121157AP

Coolant Pipe Audi A4 B8 A5 8T 2.0 TDI Water Cooling Line 03L121157AP

€23.95

Free delivery: Sep 21 – 24

If paid before 14:00

Part no. 6R0122109L

Audi S1 8X VW Polo GTI Mk5 Water Coolant Pipe Hose Line 2.0 TFSI 6R0122109L

€23.95

Free delivery: Sep 21 – 24

If paid before 14:00

Part no. 06J121065F

Audi TT 8J A3 8P A4 8K Water Hose Cooling Coolant Radiator Pipe Line 06J121065F

€32.95

Free delivery: Sep 21 – 24

If paid before 14:00

Part no. 079121085Q

Audi S6 C7 S7 4G Water Coolant Pipe Hose 4.0 TFSI Petrol 079121085Q

€23.95

Free delivery: Sep 21 – 24

If paid before 14:00

Part no. 059121103H

Audi SQ5 8R 3.0 TDI CGQB Coolant Hose Line Tube Pipe 059121103H

€23.95

Free delivery: Sep 21 – 24

If paid before 14:00

Part no. 6R0121217

Audi A1 S1 8X GB VW Polo 6R Skoda Fabia 5J Radiator Cooling Fan Ring 6R0121217

€23.95

Free delivery: Sep 21 – 24

If paid before 14:00

Part no. 8E0121251L

Audi A4 B6 B7 Coolant Radiator Rad Cooling Unit 1.9 TDi 8E0121251L

€32.95

Free delivery: Sep 21 – 24

If paid before 14:00

Part no. 079115201C

Audi RS4 B8 RS5 8T Oil Cooler Line Thermostat 4.2 FSI 079115201C

€56.95

Free delivery: Sep 21 – 24

If paid before 14:00

Part no. 1K0122291H

Audi A3 8P VW Golf MK5 Caddy 2K Water Coolant Hose Pipe Line 2.0 TDi 1K0122291H

€23.95

Free delivery: Sep 21 – 24

If paid before 14:00

Part no. 4H0906088AA

Audi A8 D4 Temperature Sensor Diesel Engine Exhaust Gas Sensor Probe 4H0906088AA

€37.95

Free delivery: Sep 21 – 24

If paid before 14:00

Part no. 06A121065CQ

Audi A3 8P VW Golf Mk5 Coolant Hose Water Pipe Cooling 1.6 Petrol 06A121065CQ

€56.95

Free delivery: Sep 21 – 24

If paid before 14:00

Part no. 06L145778M

Audi Q5 FY Oil Feed Hose Pipe Line 2.0 TFSI Petrol Engine 06L145778M

€23.95

Free delivery: Sep 21 – 24

If paid before 14:00

Part no. 5N0121064H

Audi Q3 8U Volkswagen Tiguan 5N Coolant Hose Metal Pipe Radiator 5N0121064H

€37.95

Free delivery: Sep 21 – 24

If paid before 14:00

Part no. 8E0121101C

Audi A4 B7 1.9 TDI Water Pipe Engine Cooling Radiator Coolant Hose 8E0121101C

€23.95

Free delivery: Sep 21 – 24

If paid before 14:00

Part no. 8K0121207A-5

Audi A4 B8 Diesel Engine Cooling Radiator Double Coolant Fan Motor 8K0121207A

€28.95

Free delivery: Sep 21 – 24

If paid before 14:00

Part no. 1K0121096BH

Audi A3 8P Water Hose Cooling Radiator Coolant Pipe Line 1K0121096BH

€23.95

Free delivery: Sep 21 – 24

If paid before 14:00

Part no. 8K0819332M

Audi A4 B8 Water Coolant Pipe Hose Line Tube 2.0 TDI CNHC 8K0819332M

€37.95

Free delivery: Sep 21 – 24

If paid before 14:00

Part no. 4H0906088AB

Audi A8 D4 Temperature Sensor Diesel Engine Exhaust Gas Sensor Probe 4H0906088AB

€23.95

Free delivery: Sep 21 – 24

If paid before 14:00

Part no. 06J117021J

Audi A3 8P TT 8J A4 B7 Oil Cooler 1.8 2.0 TFSI Petrol Engine 06J117021J

€23.95

Free delivery: Sep 21 – 24

If paid before 14:00

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