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 S4 B8 Engine Coolant Pipe Hose Line Left N/S Outer 3.0 TFSI 8K0145922A

€23.95

Free delivery: Sep 23 – 24

If paid before 14:00

Part no. 8K0965567

Audi A6 C6 Q7 4L Water Electric Pump Auxiliary Coolant Circulation 8K0965567

€66.95

Free delivery: Sep 23 – 24

If paid before 14:00

Part no. 06E121083N

Audi A4 S4 B8 3.0 TFSI Water Hose Coolant Pipe Line Tube 06E121083N

€37.95

Free delivery: Sep 23 – 24

If paid before 14:00

Part no. 8R0121101G

Audi A4 B8 A5 Water Coolant Hose Pipe Line 8R0121101G

€23.95

Free delivery: Sep 23 – 24

If paid before 14:00

Part no. 059121507AB

Audi A5 8T Engine Coolant Cooling Hose Pipe Line 3.0 TDI Diesel 059121507AB

€23.95

Free delivery: Sep 23 – 24

If paid before 14:00

Part no. 06D121492J

Audi A4 B7 A6 C6 Engine Coolant Pipe Hose Tube Line 2.0 BWE Petrol 06D121492J

€28.95

Free delivery: Sep 23 – 24

If paid before 14:00

Part no. 8J0121051Q

Audi TT Mk2 8J 2.0 TDI Engine Water Coolant Pipe Hose Line 8J0121051Q

€32.95

Free delivery: Sep 23 – 24

If paid before 14:00

Part no. 079121070T

Audi A4 B7 4.2 V8 Coolant Pipe Hose Line Tube Cooling 079121070T

€32.95

Free delivery: Sep 23 – 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 23 – 24

If paid before 14:00

Part no. 4F0121081G

Audi A6 C6 Water Hose Coolant Cooling Tube Pipe Line 2.7 Diesel 4F0121081G

€23.95

Free delivery: Sep 23 – 24

If paid before 14:00

Part no. 4K2819347F

Audi A6 C8 Coolant Hose Line Pipe Tube Engine Cooling 4K2819347F

€32.95

Free delivery: Sep 23 – 24

If paid before 14:00

Part no. 1K0122051CM

Audi S3 8P Water Hose Cooling Coolant Radiator Pipe Line 1K0122051CM

€23.95

Free delivery: Sep 23 – 24

If paid before 14:00

Part no. 8K1819350AB

Audi A4 B8 A5 8T Heater Matrix Connecting Pipe Coolant Hose Tube 8K1819350AB

€23.95

Free delivery: Sep 23 – 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 23 – 24

If paid before 14:00

Part no. 8J0121157A

Audi TT TTS 8J Engine Coolant Hose Tube Line Quick Coupling 8J0121157A Automatic

€32.95

Free delivery: Sep 23 – 24

If paid before 14:00

Part no. 079121070BS

AUDI S5 8T 4.2 Petrol CAUA Coolant Pipe Right O/S Cooler Water Hose 079121070BS

€23.95

Free delivery: Sep 23 – 24

If paid before 14:00

Part no. 8W0959455L

Audi A6 C8 Engine Cooling Radiator Fan Shroud Motor Unit 8W0959455L

€66.95

Free delivery: Sep 22 – 24

If paid before 14:00

Part no. 079121065P

Audi A4 B7 4.2 V8 Petrol Coolant Pipe Cooler Water Hose 079121065P

€23.95

Free delivery: Sep 23 – 24

If paid before 14:00

Part no. 8K0819377C

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

€23.95

Free delivery: Sep 23 – 24

If paid before 14:00

Part no. 4K0122101AT

Audi A6 C8 Water Pipe Hose Line Cooling Coolant 4K0122101AT

€23.95

Free delivery: Sep 23 – 24

If paid before 14:00

Part no. 059121737AR

Audi A6 C8 A7 4G Q7 4M Coolant Control Regulating Valve 3.0 Diesel 059121737AR

€47.95

Free delivery: Sep 23 – 24

If paid before 14:00

Part no. 4H0959455AD-1

Audi A6 C7 Radiator Fan Shroud Coolant Unit Cover Left N/S 4H0959455AD

€42.95

Free delivery: Sep 23 – 24

If paid before 14:00

Part no. 1K0122073GF

Audi A3 8P Water Hose Cooling Coolant Radiator Pipe Line 1K0122073GF

€23.95

Free delivery: Sep 23 – 24

If paid before 14:00

Part no. 07K145735G

Audi RS3 8Y Turbocharger Turbo Oil Return Pipe Line 2.5 Petrol 07K145735G

€89.95

Free delivery: Sep 23 – 24

If paid before 14:00

Part no. 079115277AJ

Audi RS4 B8 Oil Pump Pickup Pipe 4.2 FSI Petrol 079115277AJ

€37.95

Free delivery: Sep 23 – 24

If paid before 14:00

Part no. 06A121133J

Audi TT Mk1 Engine Coolant Flange Water Housing 1.8T Petrol 06A121133J

€23.95

Free delivery: Sep 23 – 24

If paid before 14:00

Part no. 06H121026BF

Audi A3 8P A4 B8 A5 8T Water Coolant Pump 1.8 TFSI Petrol 06H121026DS

€51.95

Free delivery: Sep 23 – 24

If paid before 14:00

Part no. 7L8121070BG

Audi Q7 4L Water Coolant Pipe Hose Line 3.0 TDI 7L8121070BG

€47.95

Free delivery: Sep 22 – 24

If paid before 14:00

Part no. 059121064N

Audi A6 C8 Q5 FY Q7 4M Water Hose Coolant Pipe Line 3.0 TDI 059121064N

€32.95

Free delivery: Sep 23 – 24

If paid before 14:00

Part no. 06E121045AS

Audi A4 S4 B8 S5 8T Water Hose Radiator Coolant Pipe Line 3.0 TFSI 06E121045AS

€61.95

Free delivery: Sep 23 – 24

If paid before 14:00

Part no. 059122471AB

Audi Q7 4M Q8 Mk1 Engine Coolant Hose Line Tube Pipe Set 3.0 Diesel 059122471AB

€94.95

Free delivery: Sep 22 – 24

If paid before 14:00

Part no. 4K0819374Q

Audi A6 C8 Engine Coolant Pipe Water Hose Cooling Line Tube 4K0819374Q

€23.95

Free delivery: Sep 23 – 24

If paid before 14:00

Part no. 059131685D

Audi A6 A7 4G8 3.0 TDI Oil Cooler Radiator Bracket Mount 059131685D

€23.95

Free delivery: Sep 23 – 24

If paid before 14:00

Part no. 1K0998262AA

Audi A8 D3 A6 C6 Exhaust Gas Temperature NOX Lambda Probe Sensor 1K0998262AA

€42.95

Free delivery: Sep 23 – 24

If paid before 14:00

Part no. 079115289S

Audi A5 RS5 Oil Sump Separator Baffle Plate Panel 4.2 V8 Petrol 079115289S

€23.95

Free delivery: Sep 23 – 24

If paid before 14:00

Part no. 6C0122051AE

Audi A1 8X 1.4 TFSI CZCA Coolant Hose Line Tube Pipe 6C0122051AE

€23.95

Free delivery: Sep 23 – 24

If paid before 14:00

Part no. 03C121497D

Audi A3 8P Water Pipe Hose Line Engine Cooling Coolant Unit Hose 03C121497D

€23.95

Free delivery: Sep 23 – 24

If paid before 14:00

Part no. 059121004J

Audi A5 8T Additional Auxiliary Water Pump 059121004J

€28.95

Free delivery: Sep 23 – 24

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: Sep 23 – 24

If paid before 14:00

Part no. 8W0121673B

Audi A4 B9 Radiator Air Guide Duct Channel Cover Panel Left N/S 8W0121673B

€23.95

Free delivery: Sep 23 – 24

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: Sep 22 – 24

If paid before 14:00

Part no. 059121085Q

Audi A6 C8 Q7 4M Coolant Water Pipe Hose Line Tube 3.0 TDI 059121085Q

€32.95

Free delivery: Sep 23 – 24

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: Sep 23 – 24

If paid before 14:00

Part no. 04E121600BD

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

€23.95

Free delivery: Sep 23 – 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 23 – 24

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: Sep 23 – 24

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: Sep 23 – 24

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: Sep 23 – 24

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: Sep 23 – 24

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: Sep 23 – 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 23 – 24

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: Sep 23 – 24

If paid before 14:00

Part no. 6R0122447K-1

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

€23.95

Free delivery: Sep 23 – 24

If paid before 14:00

Part no. 8K0121251T

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

€85.95

Free delivery: Sep 22 – 24

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: Sep 23 – 24

If paid before 14:00

Part no. 059145771AQ

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

€37.95

Free delivery: Sep 23 – 24

If paid before 14:00

Part no. 06F145383N

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

€28.95

Free delivery: Sep 23 – 24

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: Sep 23 – 24

If paid before 14:00

Part no. 8W0122055CA

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

€37.95

Free delivery: Sep 23 – 24

If paid before 14:00

Part no. 8E0121321

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

€23.95

Free delivery: Sep 23 – 24

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: Sep 23 – 24

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: Sep 23 – 24

If paid before 14:00

Part no. 8W0122449BR

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

€37.95

Free delivery: Sep 23 – 24

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: Sep 23 – 24

If paid before 14:00

Part no. 8K0121207B

Audi A4 B8 Radiator Fan Engine Motor Cooling 8K0121207B

€75.95

Free delivery: Sep 22 – 24

If paid before 14:00

Part no. 06F121111H

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

€23.95

Free delivery: Sep 23 – 24

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: Sep 23 – 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 23 – 24

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: Sep 23 – 24

If paid before 14:00

Part no. 4K0122055AK

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

€23.95

Free delivery: Sep 23 – 24

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: Sep 23 – 24

If paid before 14:00

Part no. 5Q0122073R

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

€23.95

Free delivery: Sep 23 – 24

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: Sep 23 – 24

If paid before 14:00

Part no. 4H0121055AB

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

€37.95

Free delivery: Sep 23 – 24

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: Sep 23 – 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 23 – 24

If paid before 14:00

Part no. 07K121133E

Audi RS3 8V RSQ3 F3 Water Coolant Pump Regulator Flange 2.5 TFSI 07K121133E

€23.95

Free delivery: Sep 23 – 24

If paid before 14:00

Part no. 1K0121407A

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

€23.95

Free delivery: Sep 23 – 24

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: Sep 23 – 24

If paid before 14:00

Part no. 8W0145924P

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

€23.95

Free delivery: Sep 23 – 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 23 – 24

If paid before 14:00

Part no. 06H121601M

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

€23.95

Free delivery: Sep 23 – 24

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: Sep 23 – 24

If paid before 14:00

Part no. 8W0145919K

Audi A5 F5 Water Coolant Hose Line Pipe Tube 8W0145919K

€28.95

Free delivery: Sep 23 – 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 22 – 24

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: Sep 23 – 24

If paid before 14:00

Part no. 3C0122101FL

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

€32.95

Free delivery: Sep 23 – 24

If paid before 14:00

Part no. 06H121057E

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

€23.95

Free delivery: Sep 23 – 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 23 – 24

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: Sep 23 – 24

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: Sep 23 – 24

If paid before 14:00

Part no. 059121008G

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

€37.95

Free delivery: Sep 22 – 24

If paid before 14:00

Part no. 8W0122101AL

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

€28.95

Free delivery: Sep 23 – 24

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: Sep 23 – 24

If paid before 14:00

Part no. 1K0121093CJ

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

€23.95

Free delivery: Sep 23 – 24

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: Sep 23 – 24

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: Sep 23 – 24

If paid before 14:00

Part no. 6R0121093B

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

€23.95

Free delivery: Sep 23 – 24

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: Sep 23 – 24

If paid before 14:00

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