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

€23.95

Free delivery: Sep 21 – 24

If paid before 14:00

Part no. 3AA122073A

Audi TT 8J Engine Coolant Hose Pipe Line Tube Quick Release Coupling 3AA122073A

€23.95

Free delivery: Sep 21 – 24

If paid before 14:00

Part no. 1K0122073FS

Volkswagen Audi Seat Skoda Water Hose Radiator Coolant Pipe Line 1K0122073FS

€28.95

Free delivery: Sep 21 – 24

If paid before 14:00

Part no. 8J0121109A

Audi TT 8J 2.0 TFSI Water Hose Cooling Coolant Radiator Pipe Line 8J0121109A

€23.95

Free delivery: Sep 21 – 24

If paid before 14:00

Part no. 079121065M

Audi A4 B6 4.2 Petrol Coolant Pipe Cooler Water Hose 079121065M

€47.95

Free delivery: Sep 21 – 24

If paid before 14:00

Part no. 07L121107C

Audi S8 D3 Radiator Coolant Water Hose Pipe Line 07L121107C

€23.95

Free delivery: Sep 21 – 24

If paid before 14:00

Part no. 1K0122073GE

Audi A3 8P VW Golf Mk6 Water Hose Cooling Coolant Radiator Pipe Line 1K0122073GE

€32.95

Free delivery: Sep 21 – 24

If paid before 14:00

Part no. 4K0145920S

Audi A6 C8 Coolant Water Pipe Hose Line 50 TFSIe 4K0145920S

€23.95

Free delivery: Sep 21 – 24

If paid before 14:00

Part no. 4G0121071N

Audi A7 4G8 3.0 TDI CDUC Diesel Water Coolant Hose Line Tube Pipe 4G0121071N

€23.95

Free delivery: Sep 21 – 24

If paid before 14:00

Part no. 04L121026F

Audi A3 8V 2.0 TDI DGCA Diesel Engine Coolant Thermostat 04L121026F

€23.95

Free delivery: Sep 21 – 24

If paid before 14:00

Part no. 4K0121051L

Audi A6 C8 Water Coolant Pipe Hose Line 50 TFSIe 4K0121051L

€23.95

Free delivery: Sep 21 – 24

If paid before 14:00

Part no. 1K0122096J

Seat Leon II VW Golf MK5 Audi A3 8P Water Hose Coolant Pipe Petrol 1K0122096J

€23.95

Free delivery: Sep 21 – 24

If paid before 14:00

Part no. 1K0122109AS

Audi A3 8P Engine Water Coolant Pipe Hose Line 1.4 TFSI CAXC Petrol 1K0122109AS

€23.95

Free delivery: Sep 21 – 24

If paid before 14:00

Part no. 8W0906088E

Audi A4 B9 2.0 TDI Diesel Exhaust Gas Temperature Sensor 8W0906088E

€23.95

Free delivery: Sep 21 – 24

If paid before 14:00

Part no. 079121083H

Audi A7 4G 4.0 TFSI Coolant Hose Engine Water Pipe Front Left N/S 079121083H

€37.95

Free delivery: Sep 21 – 24

If paid before 14:00

Part no. 4K0145919P

Audi A6 C8 Expansion Tank Water Coolant Pipe Hose Line 50 TFSIe 4K0145919P

€23.95

Free delivery: Sep 21 – 24

If paid before 14:00

Part no. 8W0819332E

Audi A4 S4 B9 3.0 TFSI Water Hose Cooling Engine Coolant Pipe Line 8W0819332E

€23.95

Free delivery: Sep 21 – 24

If paid before 14:00

Part no. 4G0122101B

Audi A6 C7 3.0 TDI Diesel Radiator Upper Hose Line Pipe Left N/S 4G0122101B

€23.95

Free delivery: Sep 21 – 24

If paid before 14:00

Part no. 8W0819376E

Audi A4 B9 A5 F5 Water Hose Cooling Coolant Pipe Line 3.0 TFSI Petrol 8W0819376E

€23.95

Free delivery: Sep 21 – 24

If paid before 14:00

Part no. 057121083S

Audi A8 D4 Water Cooling Coolant Pipe Hose Line Tube 4.2 TDI Diesel 057121083S

€28.95

Free delivery: Sep 21 – 24

If paid before 14:00

Part no. 4G0819377K

Audi A6 A7 C7 3.0 TDI Coolant Water Hose Pipe Line Tube 4G0819377K

€23.95

Free delivery: Sep 21 – 24

If paid before 14:00

Part no. 059121131J

Audi A8 D4 Q7 4L Coolant Hose Line Tube Pipe 3.0 TDI 059121102C 059121053J

€23.95

Free delivery: Sep 21 – 24

If paid before 14:00

Part no. 4K0145934L

Audi A6 C8 Water Coolant Pipe Hose Line 50 TFSIe 4K0145934L

€23.95

Free delivery: Sep 21 – 24

If paid before 14:00

Part no. 05A906088

Audi A8 D4 Q7 4L Exhaust Gas Temperature Sensor Diesel Engine 05A906088

€23.95

Free delivery: Sep 21 – 24

If paid before 14:00

Part no. 4G0121049Q

Audi A6 C7 A7 4G Water Radiator Coolant Pipe Hose Tube Line 3.0 TFSI 4G0121049Q

€23.95

Free delivery: Sep 21 – 24

If paid before 14:00

Part no. 4G0819374R

Audi A6 Allroad A7 4G8 Sportback Heater Coolant Hose Pipe Line Tube 4G0819374R

€23.95

Free delivery: Sep 21 – 24

If paid before 14:00

Part no. 5Q0122101H

Audi A3 8V Water Coolant Hose Line Pipe Tube 1.4 TFSI Petrol CMBA 5Q0122101H

€28.95

Free delivery: Sep 21 – 24

If paid before 14:00

Part no. 06K121075AR

Audi Q3 8U VW Beetle Scirocco Mk3 Coolant Pipe Water Cooling Hose 06K121075AR

€23.95

Free delivery: Sep 21 – 24

If paid before 14:00

Audi Q5 8R Water Coolant Pipe Hose Line Connector 2.0 TDI 8R0121049P

-2%

Part no. 8R0121049P

Audi Q5 8R Water Coolant Pipe Hose Line Connector 2.0 TDI 8R0121049P

Promo price

€23.95

€23.45

Free delivery: Sep 21 – 24

If paid before 14:00

Part no. 1K0121207AT

Audi A3 8P Diesel Engine Cooling Shroud Blade Radiator Coolant Fan 1K0121207AT

€23.95

Free delivery: Sep 21 – 24

If paid before 14:00

Part no. 4K0819374AC

Audi A6 C8 Engine Water Coolant Pipe Hose Cooling Line Tube 50 TFSIe 4K0819374AC

€32.95

Free delivery: Sep 21 – 24

If paid before 14:00

Part no. 4E0965559D

Audi S8 D3 Additional Water Coolant Pump 4E0965559D

€56.95

Free delivery: Sep 21 – 24

If paid before 14:00

Part no. 4G0121214AC

Audi A6 A7 4G8 Radiator Coolant Reservoir Bracket Mount Upper Front 4G0121214AC

€23.95

Free delivery: Sep 21 – 24

If paid before 14:00

Part no. 4G0121214AF

Audi A6 C7 Radiator Coolant Reservoir Bracket Mount Lower Front 4G0121214AF

€23.95

Free delivery: Sep 21 – 24

If paid before 14:00

Part no. 8K1819376P

Audi A5 8T 2.0 TFSI Water Hose Cooling Coolant Radiator Pipe Line 8K1819376P

€23.95

Free delivery: Sep 21 – 24

If paid before 14:00

Part no. 6C0122447K

Audi A1 8X Polo 6C Water Coolant Hose Pipe 1.4 TSI TFSI 6C0122447K

€28.95

Free delivery: Sep 21 – 24

If paid before 14:00

Part no. 5Q0122073L

Audi A3 8V Engine Water Coolant Pipe Tube Line Hose 1.4 TFSI Petrol 5Q0122073L

€32.95

Free delivery: Sep 21 – 24

If paid before 14:00

Part no. 5N0122447BD

Audi Q3 8U Water Coolant Cooling Pipe Hose Line 2.0 TDI Diesel 5N0122447BD

€23.95

Free delivery: Sep 21 – 24

If paid before 14:00

Part no. 8K0121403G

Audi A4 B8 A5 8T Q5 2.0TDI Coolant Reservoir Expansion Tank Bottle 8K0121403G

€23.95

Free delivery: Sep 21 – 24

If paid before 14:00

Part no. 4G0816743AP

Audi S6 C7 A7 Refrigerant Hose Pipe Line 4G0816743AP

€66.95

Free delivery: Sep 21 – 24

If paid before 14:00

Part no. 4G0121214AE

Audi A6 C7 Radiator Coolant Reservoir Bracket Mount Upper Front 4G0121214AC

€23.95

Free delivery: Sep 21 – 24

If paid before 14:00

Part no. 06K103495AS

Audi A4 B9 A5 F5 Engine Oil Separator Breather Petrol 2.0 TFSI DDWA 06K103495AS

€32.95

Free delivery: Sep 21 – 24

If paid before 14:00

Part no. 07K965561B-1

Audi RS Q3 8U Engine Auxiliary Water Coolant Pump 2.5 TFSI 07K965561B

€66.95

Free delivery: Sep 21 – 24

If paid before 14:00

Part no. 06M121085H

Audi A4 S4 B9 VW Touareg Water Coolant Pipe Hose Line 06M121085H

€23.95

Free delivery: Sep 21 – 24

If paid before 14:00

Part no. 7L6422376

Audi Q7 4L VW Volkswagen Touareg 7P Steering Tank End Cap Cover 7L6422376

€23.95

Free delivery: Sep 21 – 24

If paid before 14:00

Part no. 5Q0122051EG

Audi A3 8V Water Coolant Pipe Radiator Hose Cooling Fluid Line 5Q0122051EG

€32.95

Free delivery: Sep 21 – 24

If paid before 14:00

Part no. 8K0819350D

Audi A4 B8 A5 8T Coolant Cooling Hose Pipe Line Tube 2.0 TDI 8K0819350D

€23.95

Free delivery: Sep 21 – 24

If paid before 14:00

Part no. 5Q0122157AT

Audi A3 8V VW Golf 5G Engine Water Coolant Tube Pipe 1.4 TFSI Petrol 5Q0122157AT

€37.95

Free delivery: Sep 21 – 24

If paid before 14:00

Part no. 03L121071

Audi A4 B8 A5 8T A6 C6 Water Coolant Cooling Pipe Hose Line 2.0 TDI 03L121071

€23.95

Free delivery: Sep 21 – 24

If paid before 14:00

Part no. 8K0959455K

Audi A5 S5 8T Engine Cooling Radiator Fan Shroud Panel 8K0959455K

€28.95

Free delivery: Sep 21 – 24

If paid before 14:00

Part no. 8K0121101M

Water Pipe Audi A4 B8 A5 8T Q5 8R 2.0 TFSI Coolant Hose Line 8K0121101M

€23.95

Free delivery: Sep 21 – 24

If paid before 14:00

Part no. 059121111AA

Audi A5 8T Q5 8R 3.0 TDI Diesel Thermostat Coolant 059121111AA

€23.95

Free delivery: Sep 21 – 24

If paid before 14:00

Part no. 8R0121284H

Audi Q5 8R Cooling Radiator Guide Mount Bracket Right O/S 8R0121284H

€23.95

Free delivery: Sep 21 – 24

If paid before 14:00

Part no. 04L122157BQ

Audi A5 8T 2.0 TDI CNHA Water Coolant Pipe Line Hose Tube 04L122157BQ

€23.95

Free delivery: Sep 21 – 24

If paid before 14:00

Part no. 8W0122055CA-1

Audi A4 B9 A5 F5 Engine Water Coolant Pipe Hose Line 2.0 TDI 8W0122055CA

€51.95

Free delivery: Sep 21 – 24

If paid before 14:00

Part no. 8K0121207A-3

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. 4G0819374M

Audi A6 C7 A7 4G Heater Coolant Cooling Hose Pipe Line 4G0819374M

€28.95

Free delivery: Sep 21 – 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 21 – 24

If paid before 14:00

Part no. 8K0819374S

Audi A4 B8 A5 8T 2.0 TDI Heater Valve Coolant Pipe Hose 8K0819374S

€23.95

Free delivery: Sep 21 – 24

If paid before 14:00

Part no. 4H0959455AD

Audi A6 C7 Radiator Fan Engine Cooling Motor Left N/S 400W 4H0959455AD

€85.95

Free delivery: Sep 21 – 24

If paid before 14:00

Part no. 03L121157AH

Audi A5 S5 8F 2.0 TDI Water Hose Cooling Radiator Coolant Pipe Line 03L121157AH

€23.95

Free delivery: Sep 21 – 24

If paid before 14:00

Part no. 4G1819350AT

Audi A6 C7 A7 4G Heater Coolant Cooling Hose Pipe Line 4G1819350AT

€23.95

Free delivery: Sep 21 – 24

If paid before 14:00

Part no. 1K0133366BB

Audi A3 8P A4 B7 Golf Mk6 Water Coolant Pipe Hose Line 2.0 TSI 1K0133366BB

€23.95

Free delivery: Sep 21 – 24

If paid before 14:00

Part no. 06L145735J

Audi A4 B8 A5 F5 Turbine Lubrication Oil Return Pipe 2.0 TFSI 06L145735J

€42.95

Free delivery: Sep 21 – 24

If paid before 14:00

Part no. 5Q0122101BP-1

Audi A3 8V Water Coolant Radiator Pipe Hose Line 2.0 TDI 5Q0122101BP

€37.95

Free delivery: Sep 21 – 24

If paid before 14:00

Part no. 8J0121124A

Audi RS3 8P Gearbox Oil Cooler Coolant Pipe Hose Line 2.5 TFSI CEPA 8J0121124A

€66.95

Free delivery: Sep 21 – 24

If paid before 14:00

Part no. 059121598AB

Audi A8 D4 Engine Water Coolant Pipe Hose Line Feed 3.0 TDI 059121598AB

€37.95

Free delivery: Sep 21 – 24

If paid before 14:00

Part no. 8N0422891E

Audi TT 8N Power Steering Rack Return Oil Hose Pipe Line 3.2 Quattro 8N0422891E

€85.95

Free delivery: Sep 21 – 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 21 – 24

If paid before 14:00

Part no. 8J0121447E

Audi TT 8J Engine Coolant Vent Hose Pipe 2.0 TDI Diesel CBBB 8J0121447E

€23.95

Free delivery: Sep 21 – 24

If paid before 14:00

Part no. 8K0819337A

Audi A4 B7 2.0 TDI BRE Diesel Water Coolant Pipe Hose Line Tube 8K0819337A

€28.95

Free delivery: Sep 21 – 24

If paid before 14:00

Part no. 8U0121485

Audi RSQ3 8U Front Water Coolant Pipe Hose Line Tube 2.5 TFSI 8U0121485

€51.95

Free delivery: Sep 21 – 24

If paid before 14:00

Part no. 4G0819337

Audi A6 C7 3.0 TFSI Water Coolant Pipe Hose Line 4G0819337

€23.95

Free delivery: Sep 21 – 24

If paid before 14:00

Part no. 04L121131AB

Audi A3 8V 2.0 TDI DGCA Coolant Water Flange Housing Hose Line 04L121131AB

€28.95

Free delivery: Sep 21 – 24

If paid before 14:00

Part no. 1K0122051HD-1

Audi A3 8P VW Scirocco Mk3 2.0 TDI Diesel Radiator Coolant Hose 1K0122051HD

€32.95

Free delivery: Sep 21 – 24

If paid before 14:00

Part no. 059121507M

Audi A4 S4 8K A5 S5 8T Engine Coolant Pipe Hose Tube Line 059121507M

€23.95

Free delivery: Sep 21 – 24

If paid before 14:00

Part no. 5WA907527A

Audi A3 8Y Volkswagen VW Golf Mk8 Interior Temperature Sensor Unit 5WA907527A

€23.95

Free delivery: Sep 21 – 24

If paid before 14:00

Part no. 1J0121403B

Audi TT 8N Coolant Expansion Header Tank Bottle Reservoir Cap 1J0121403B

€23.95

Free delivery: Sep 21 – 24

If paid before 14:00

Part no. 06H121497F

Audi A4 B8 A5 8T Turbocharger Coolant Feed Pipe Hose Line 1.8 TFSI 06H121497F

€28.95

Free delivery: Sep 21 – 24

If paid before 14:00

Part no. 06F121057C

Audi A1 8X S3 8P VW Golf R Mk5 Water Coolant Pipe Hose Line 2.0 TSI 06F121057C

€47.95

Free delivery: Sep 21 – 24

If paid before 14:00

Part no. 4G0121292E

Audi A7 4G Engine Radiator Coolant Upper Centre Cover Panel 4G0121292E

€23.95

Free delivery: Sep 21 – 24

If paid before 14:00

Part no. 059121465B-1

Audi A4 B8 A5 8T A6 C7 Q7 4L Coolant Pipe Water Hose 3.0 TDI 059121465B

€56.95

Free delivery: Sep 21 – 24

If paid before 14:00

Part no. 6R0121070N

Audi A1 8X Engine Coolant Water Pipe Hose Line 1.6 TDI CAYC 6R0121070N

€51.95

Free delivery: Sep 21 – 24

If paid before 14:00

Part no. 059117015K

Audi Q7 4M Engine Oil Cooler Radiator 3.0 TDI 059117015K

€32.95

Free delivery: Sep 21 – 24

If paid before 14:00

Part no. 1K0122291BM

Audi A3 8P 2.0 TDI Water Hose Radiator Coolant Pipe Line 1K0122291BM

€23.95

Free delivery: Sep 21 – 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 21 – 24

If paid before 14:00

Part no. 8W0122101B

Water Hose Audi A4 B9 A5 F5 Cooling Coolant Radiator Pipe Line 8W0122101B

€23.95

Free delivery: Sep 21 – 24

If paid before 14:00

Part no. 7L0819857C

Audi Q7 4L Coolant Pipe Hose Line Duct Tube 3.0 TDI 7L0819857C

€23.95

Free delivery: Sep 21 – 24

If paid before 14:00

Part no. 8J0121109E

Audi TT Mk2 8J Water Coolant Pipe Hose 1.8 2.0 TFSI CDAA CESA Petrol 8J0121109E

€23.95

Free delivery: Sep 21 – 24

If paid before 14:00

Part no. 03L121157AE-2

Audi A6 S6 4G 4F Q5 8R Engine Coolant Pipe Hose Tube Line 2.0TDi 03L121157AE

€23.95

Free delivery: Sep 21 – 24

If paid before 14:00

Part no. 059121016C

Audi A4 B9 A6 C7 A7 4G Q7 4M Engine Water Coolant Pump 3.0 TDI 059121016C

€66.95

Free delivery: Sep 21 – 24

If paid before 14:00

Part no. 8K0145923F

Audi A4 S4 B8 S5 8T Radiator Coolant Hose Tube Pipe Line 8K0145923F

€23.95

Free delivery: Sep 21 – 24

If paid before 14:00

Part no. 8W0122055BN

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

€28.95

Free delivery: Sep 21 – 24

If paid before 14:00

Part no. 03L121011G

Audi A3 8P TT 8J VW Golf Mk5 Mk6 Water Coolant Pump 2.0 TDI 03L121011G

€23.95

Free delivery: Sep 21 – 24

If paid before 14:00

Part no. 03L121157AD

Audi A4 B8 A5 8T Coolant Pipe Hose 2.0 TDi Diesel EGR 03L121157AD

€23.95

Free delivery: Sep 21 – 24

If paid before 14:00

Part no. 6R0129637E

Audi A1 8X Air Filter Box Pipe Pipe Line Hose 1.6 TDI CAYC 6R0129637E

€23.95

Free delivery: Sep 21 – 24

If paid before 14:00

Part no. 1K0122101CK

Audi Q3 8U Water Hose Cooling Radiator Coolant Pipe Line 1K0122101CK

€23.95

Free delivery: Sep 21 – 24

If paid before 14:00

Part no. 4K2819377E-2

Audi A6 C8 Engine Cooling Water Pipe Coolant Hose Line Tube 4K2819377E

€28.95

Free delivery: Sep 21 – 24

If paid before 14:00

Part no. 8W0122449BC

Audi A4 B9 A5 F5 Engine Water Pipe Line Water Coolant 8W0122449BC

€32.95

Free delivery: Sep 21 – 24

If paid before 14:00

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