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 B9 A5 F5 A6 A7 C8 A8 D5 Q5 F8 Radiator Water Hose Pipe Line 06N121075C

€47.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 03L121093A

Audi A4 B8 A5 8T A6 C6 Auxiliary Coolant Water Pump 2.0 TDI Diesel 03L121093A

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 06K115243B

VW Golf Mk7 Audi A3 8V Oil Pressure Control Valve 2.0 TFSI CJXC 06K115243B

€28.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 1K0122101AF

Audi A3 8P Engine Coolant Hose Pipe Tube Line 2.0 Petrol AXW 1K0122101AF

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 059121004J

Audi A5 8T Additional Auxiliary Water Pump 059121004J

€28.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 03G121473

Audi A4 S4 Avant 8E Water Coolant Pipe Hose 2.0 Diesel Engine Vent 03G121473

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 8W0122055BN-2

Audi A4 B9 A5 F5 Coolant Pipe Radiator Hose Line Tube 2.0 Petrol 8W0122055BN

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 4M0819927CP

Audi Q7 4M Water Coolant Hose Tube Line Pipe 3.0 TDI Diesel Set 4M0819927CP

€56.95

Free delivery: Nov 10 – 13

If paid before 14:00

Part no. 059121512N

Audi A6 4G Q5 8R 2.0 TDI Diesel Water Hose Line Tube Pipe 1K0121096R 059121512N

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 06L121075A

Audi A5 8T A4 B8 Engine Coolant Pipe Hose Line Tube 06L121075A

€37.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 04E121600BD

Audi A1 8X 1.4 TFSI CZCA Petrol Engine Water Pump 04E121600BD

€23.95

Free delivery: Nov 12 – 13

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: Nov 12 – 13

If paid before 14:00

Part no. 8K0145673AM

Audi A5 8T 2.0 CNCD Petrol Intercooler Pipe Hose Line Tube 8K0145673AM

€47.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 04L121111

Audi A3 8V Thermostat Coolant Housing Valve 04L121111

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 06H121057G

Audi A4 B8 A5 8T Water Hose Cooling Coolant Radiator Pipe Line 06H121057G

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 1K0122101DK-1

Audi TT 8J Upper Radiator Coolant Hose Pipe 2.0 TFSI BWA 1K0122101DK

€32.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 8W2819350L

Audi A4 S4 B9 A5 F5 Engine Water Coolant Hose Pipe Line 2.0 TFSI 8W2819350L

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 04L122157CC

Audi A4 B9 2.0 TDI Diesel Engine Coolant Hose Line Pipe Tube 04L122157CC

€28.95

Free delivery: Nov 12 – 13

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: Nov 12 – 13

If paid before 14:00

Part no. 5Q0121619A

Audi A3 8V TT FV VW Golf Mk7 Water Coolant Connector Flange Diesel 5Q0121619A

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 6R0122447K-1

Audi A1 8X Coolant Water Pipe Hose Line Engine Cooling 6R0122447K

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 06N145778

Audi A4 B9 A5 F5 A6 A7 C8 A8 D5 Q5 FY Turbocharger Oil Pipe Hose Line 06N145778

€51.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 8K0121251T

Audi A4 B8 2.0 TDI Diesel Motor Engine Coolant Radiator Intercooler 8K0121251T

€42.95

Free delivery: Nov 10 – 13

If paid before 14:00

Part no. 07L121481H

Audi A6 C6 S8 D3 Engine Water Coolant Pipe Line Tube Hose 07L121481H

€66.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 059145771AQ

Oil Hose Audi A6 C7 Q5 8R Turbine Cooling Pipe Line 059145771AQ

€28.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 06F145383N

Audi TTS 8J Turbocharger Coolant Pipe Hose Line 2.0 TFSI 06F145383N

€28.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 420121233

Audi R8 42 Radiator Support Mount Bracket Left N/S Side 4.2L Petrol 420121233

€28.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 04L121131J

Audi A3 8V Skoda Octavia Mk3 Water Coolant Flange Pipe Hose Line 04L121131J

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 8K0121036E-1

Audi A4 B8 A5 8T A5 S5 Radiator Coolant Hose Tube Line Pipe 8K0121036E

€37.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 8W0122055CA

Audi A5 F5 Engine Water Coolant Hose Pipe Line Water Coolant 8W0122055CA

€37.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 8E0121321

Audi A6 C6 Radiator Water Coolant Expansion Tank Cap Cover Lid 8E0121321

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 8K0819147

Audi A4 A5 8T Auxiliary Water Pump 2.0 TDI TFSI Diesel Petrol 8K0819147

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 06F121011

Audi A4 B7 Water Coolant Pump Engine Cooling Unit 2.0 Petrol 06F121011

€66.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 8W0122449BR

Audi A5 F5 Engine Water Coolant Hose Pipe Line Water Coolant 8W0122449BR

€37.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 05L121111Q

Audi Q2 GA 3.0 TDI DTTC Diesel Engine Coolant Thermostat Housing 05L121111Q

€75.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 6R0122157L

Audi A1 8X Volkswagen Polo 6R Engine Coolant Hose Tube Line Pipe 6R0122157L

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 8K0121207B

Audi A4 B8 Radiator Fan Engine Motor Cooling 8K0121207B

€75.95

Free delivery: Nov 10 – 13

If paid before 14:00

Part no. 06F121111H

Audi A3 S3 8P 2.0 TFSI Coolant Thermostat Housing Unit 06F121111H

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 1K0122101GG

Audi A3 8P Water Coolant Pipe Hose Line 1.8 FSI BZB Petrol Engine 1K0122101GQ

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 8E0265381

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

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 059145736G

Audi A7 4G Turbocharger Lubrication Inlet Oil Feed Line Pipe 3.0 TDI 059145736G

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 4K0122055AK

Audi A6 C8 Water Coolant Pipe Hose Line 3.0 TDI 4K0122055AK

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 059121511CT-1

Audi Q7 4M Q8 Mk2 Water Coolant Hose Line Tube Pipe 3.0 Diesel 059121511CT

€42.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 5Q0122073R

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

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 8K0122293AE

Porsche Macan 95 Audi A4 S4 8K A5 S5 8F Thermostat Quick Coupling 8K0122293AE

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 4H0121055AB

Audi A8 D4 3.0 Diesel Coolant Return Line Tube Pipe Hose Right O/S 4H0121055AB

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 06H121026N

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

€56.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 04L121064C

Audi A3 8V Q3 8U Engine Water Coolant Pipe Cooling Hose Line 2.0 TDI 04L121064C

€28.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 8K0121003AD

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

€42.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 1K0121407A

Audi A3 8P Expansion Tank Header Coolant Reservoir Bottle 1K0121407A

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 7L0965561-1

Audi Q7 4L VW Touareg Additional Auxiliary Water Coolant Pump 3.0 TDI 7L0965561

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 6R0121109AA

Audi A1 8X Volkswagen Polo 6R Water Coolant Pipe Hose Tube Line 6R0121109AA

€28.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 8W0145924P

Audi A4 B9 Water Hose Cooling Radiator Coolant Pipe Line 8W0145924P

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 04L121026Q

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

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 5Q0121051L

Audi A3 S3 8V Water Pipes Hoses Coolant Cooling Lines Set 5Q0121051L 5Q0121101P

€51.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 06H121601M

Audi A5 8T Additional Water Pump Engine Coolant Unit 06H121601M

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 03L906088EP

Audi Q5 8R A4 B8 A5 8T Exhaust Gas Temperature Sensor 2.0 TDI 03L906088EP

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 8W0145919K

Audi A5 F5 Water Coolant Hose Line Pipe Tube 8W0145919K

€28.95

Free delivery: Nov 12 – 13

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: Nov 10 – 13

If paid before 14:00

Part no. 8V0121124-1

Audi RS3 8V Engine Oil Coolant Hose Pipe 2.5 TFSI 8V0121124

€56.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 3C0122101FL

Volkswagen Seat Skoda Audi Water Coolant Pipe Line Hose 2.0 TDI 3C0122101FL

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 06H121057E

Audi A5 8T Water Hose Cooling Coolant Radiator Pipe Line 06H121057E

€23.95

Free delivery: Nov 12 – 13

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: Nov 12 – 13

If paid before 14:00

Part no. 8E0121070B-1

Audi A4 S4 B7 Upper Coolant Radiator Hose Line Pipe 8E0121070B

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 059121465B

Coolant Pipe Audi A6 C7 Q7 4L 3.0 TDI Water Hose Line Tube 059121465B

€32.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 059121075DJ

Audi Q7 4L Quattro Diesel 3.0 V6 TDI Engine Cooling Coolant Pipe 059121075DJ

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 059121008G

Audi A7 4G A4 B9 A6 C7 Water Coolant Pump 059121008G

€37.95

Free delivery: Nov 10 – 13

If paid before 14:00

Part no. 8W0122101AL

Audi A5 8T Coolant Water Hose Line Tube Pipe 2.0 TDI Diesel 8W0122101AL

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 4H0122101D

Audi A8 D4 Water Pipe Engine Cooling Coolant Hose Line 3.0 TDI Diesel 4H0122101D

€32.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 1K0121093CJ

Audi Q3 8U VW Beetle Additional Coolant Pump Bracket Mount Carrier 1K0121093CJ

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 1K0998262S

Audi A8 D3 A6 C6 Exhaust Gas Temperature NOX Lambda Probe Sensor 1K0998262S

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 4G0145804D

Audi S5 8T Coolant Radiator Air Intake Intercooler 3.0 TFSI Quattro 4G0145804D

€42.95

Free delivery: Nov 10 – 13

If paid before 14:00

Part no. 04L121071G

Audi A4 B9 2.0 TDI DETA Diesel Water Coolant Hose Pipe Tube Line 04L121071G

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 6R0121093B

Audi A1 8X Additional Coolant Pump Bracket Mount Support Holder 6R0121093B

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 4G0121081EL

Audi A6 C7 Rear Breather Line Hose Pipe 4G0121081EL

€37.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 5N0122157AM

Audi Q3 8U Water Pipe Hose Coolant Cooling Line 2.0 TDI Diesel 5N0122157AM

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 4F0121283AR

Audi A6 C6 Front Radiator Air Duct Guide Channel Left N/S 4F0121283AR

€23.95

Free delivery: Nov 12 – 13

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: Nov 12 – 13

If paid before 14:00

Part no. 8K0121207B-2

Audi A4 B8 Radiator Fan Engine Motor Cooling Coolant Unit 993454J-D

€28.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 8W0122293AE

Audi A4 B9 2.0 TDI DETA Water Coolant Hose Line Tube Pipe 8W0122293AE

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 5N0121086D

Audi Q3 8U Coolant Cooling Hose Pipe Line 2.0 TDI Diesel Engine 5N0121086D

€28.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 07K121061B

Audi RSQ3 F3 Water Coolant Hose Pipe Line 2.5 TFSI 07K121061B

€32.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 4G0317818S

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

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 03L121031B

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

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 8J0121283A

Audi TT 8J Radiator Air Guide Duct Trim Left N/S 8J0121283A

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 06L121085AF

Audi Q5 FY A4 B9 8W 2.0 TFSI Petrol Engine Water Coolant Pipe Hose 06L121085AF

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 1K0122101KR

Audi TT 8J MK2 Water Hose Cooling Coolant Radiator Pipe Line 1K0122101KR

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 5N0122109AH

Audi Q3 8U Coolant Hose Radiator Cooling Water Pipe Line 5N0122109AH

€32.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 4G0121055M

Audi A6 C7 Coolant Hose Flange Coupler Water Pipe 2.0 TDI Diesel CNHA 8K0122293F

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 07K121111C

Audi RS3 8V Engine Coolant Thermostat Housing 2.5 TFSI DAZA 07K121111C

€332.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 1K0133366K

Skoda Octavia 1Z Mk2 Water Coolant Pipe Hose Line 2.0 FSI Petrol 1K0133366BB

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 1K0121101CR

Audi A3 8P Engine Water Coolant Pipe Hose Tube Line 1.4 Petrol 1K0122101GQ

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 04E121070AC

Audi A1 8X 1.4 TFSI CZCA Radiator Coolant Hose Line Tube Pipe 04E121070AC

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 1K0122063J

Audi TT 8J A3 8P Skoda Octavia II 2.0 TFSI Water Coolant Pipe Hose 1K0122063J

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 8K0122101J

Audi A4 B8 A5 8T Heater Water Cooling Coolant Pipe Hose Line 3.0 TFSI 8K0122101G

€28.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 4F0819378F

Audi A6 C6 2.0 TFSI Coolant Water Heater Pipe Hose Line 4F0819378F

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 8R0121081M

Audi Q5 8R Expansion Bottle Tank Radiator Hose Line Tube Pipe 8R0121081M

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 04L122157BT

Audi A4 B9 A5 F5 Water Coolant Cooling Hose Pipe 2.0 TDI 04L122157BT

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 06H121601K

Audi A4 B8 A5 8T Additional Water Pump Coolant Cooling Unit 06H121601K

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

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