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 Radiator Support Mount Holder Left Right N/O/S 8K0805201

€23.95

Free delivery: Sep 23 – 24

If paid before 14:00

Part no. 8W0819334F

Audi A4 B9 35 TFSI Water Hose Cooling Radiator Coolant Pipe Line 8W0819334F

€23.95

Free delivery: Sep 23 – 24

If paid before 14:00

Part no. 8E0121207F

Audi A4 B7 Seat Exeo Radiator Engine Coolant Fan Shroud Housing 8E0121207F

€75.95

Free delivery: Sep 22 – 24

If paid before 14:00

Part no. 04L121026R-1

Audi A5 8T 2.0 TDI CNHA Thermostat Housing Pipe Hose Line Tube 04L121026R

€23.95

Free delivery: Sep 23 – 24

If paid before 14:00

Part no. 8K0819350A

Audi RS4 B8 4.2 FSI CFSA Coolant Hose Pipe Line Tube 8K0819350A

€23.95

Free delivery: Sep 23 – 24

If paid before 14:00

Part no. 5Q0906457C

Audi A3 8V A3 8Y A5 B10 A6 C8 A7 4K Water Cooler Pump Control Valve 5Q0906457C

€23.95

Free delivery: Sep 23 – 24

If paid before 14:00

Part no. 5Q0121205AL

Radiator Fan Shroud Audi A3 8V Q2 GA Engine Cooling Fan Motor 400W 5Q0121205AL

€80.95

Free delivery: Sep 22 – 24

If paid before 14:00

Part no. 05E919501

Seat Ibiza Mk5 Audi A3 8Y Water Coolant Temperature Sensor Control 05E919501

€23.95

Free delivery: Sep 23 – 24

If paid before 14:00

Part no. 07K121109A

Audi RS Q3 8U Engine Water Coolant Pipe Hose Line Tube 2.5 TFSI 07K121109A

€70.95

Free delivery: Sep 23 – 24

If paid before 14:00

Part no. 05L122157CP

Audi A5 F5 Engine Coolant Pipe Hose Tube Line 2.0 TDI Diesel 05L122157CP

€37.95

Free delivery: Sep 23 – 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 23 – 24

If paid before 14:00

Part no. 059121511G

Audi A5 8T Coolant Pipe Water Hose Cooling Line 2.7 TDI Diesel 059121511G

€23.95

Free delivery: Sep 23 – 24

If paid before 14:00

Part no. 8W0906088AE

Audi Q7 4M Exhaust Gas Temperature Sensor 3.0 TDI Diesel 8W0906088AE

€23.95

Free delivery: Sep 23 – 24

If paid before 14:00

Part no. 8J0121447D

Audi TT 8J 2.0 Petrol Engine Coolant Pipe Hose Line Tube 8J0121447D

€23.95

Free delivery: Sep 23 – 24

If paid before 14:00

Part no. 8K0121403C

Audi Q5 8R Coolant Expansion Overflow Tank Bottle Reservoir Container 8K0121403C

€23.95

Free delivery: Sep 23 – 24

If paid before 14:00

Part no. 8W0122101H

Audi A4 B9 2.0 TDI Diesel Coolant Water Hose Line Tube Pipe 8W0122101H

€23.95

Free delivery: Sep 23 – 24

If paid before 14:00

Part no. 06J145771D

Audi TT 8J 1.8 TFSI CDAA High Pressure Oil Feed Pipe Hose Line Tube 06J145771D

€23.95

Free delivery: Sep 23 – 24

If paid before 14:00

Part no. 5Q0121251EC

Audi Q2 GA Coolant Radiator Engine Cooling Unit Radiator 1.6 TDI 5Q0121251EC

€75.95

Free delivery: Sep 22 – 24

If paid before 14:00

Part no. 8W0819370C

Audi A4 B9 Water Hose Cooling Coolant Radiator Pipe Line 2.0 Petrol 8W0819370C

€23.95

Free delivery: Sep 23 – 24

If paid before 14:00

Part no. 04L121065

Audi A3 8V Engine Water Coolant Pipe Cooling Hose Line 04L121065

€23.95

Free delivery: Sep 23 – 24

If paid before 14:00

Part no. 8K0145921Q

Audi S5 8T 3.0 TFSI Radiator Upper Hose Line Pipe Left N/S 8K0145921Q

€23.95

Free delivery: Sep 23 – 24

If paid before 14:00

Part no. 8K0819374Q-1

Audi A5 8T Water Hose Cooling Radiator Coolant Pipe Line 8K0819374Q

€32.95

Free delivery: Sep 23 – 24

If paid before 14:00

Part no. 06H115243F

Audi A5 8T 2.0 TFSI CDNB Oil Pressure Control Valve Adjuster Unit 06H115243F

€51.95

Free delivery: Sep 23 – 24

If paid before 14:00

Part no. 2Q0121407

Audi A1 GB Coolant Header Expansion Tank Reservoir Bottle 2Q0121407

€23.95

Free delivery: Sep 23 – 24

If paid before 14:00

Part no. 8J0121101C-1

Audi TT 8J 2.0 TFSI Water Hose Cooling Coolant Radiator Pipe Line 8J0121101C

€42.95

Free delivery: Sep 23 – 24

If paid before 14:00

Part no. 8N0121051E

Audi TT 8N S3 8L Water Hose Coolant Radiator Pipe Line 1.8 Petrol 8N0121051E

€23.95

Free delivery: Sep 23 – 24

If paid before 14:00

Part no. 4K0121405N

Audi A6 C8 Coolant Expansion Reservoir D Cooling Agent Tank Radiator 4K0121403

€28.95

Free delivery: Sep 23 – 24

If paid before 14:00

Part no. 5N0129637D

Audi A3 8P Q3 8U Air Filter Box Water Coolant Drain Pipe Hose Line 5N0129637D

€23.95

Free delivery: Sep 23 – 24

If paid before 14:00

Part no. 06E121161BB

Audi A5 8T 3.0 TFSI V6 Engine Coolant Flange Housing Cover Trim 06E121161BB

€23.95

Free delivery: Sep 23 – 24

If paid before 14:00

Part no. 7L0959455D

Audi Q7 Volkswagen Touareg 7L Radiator Fan Blade Motor 7L0959455D

€47.95

Free delivery: Sep 23 – 24

If paid before 14:00

Part no. 059103688A

Audi Q7 4L VW Touareg 7P Engine Oil Return Pipe 3.0 TDI Diesel 059103688A

€28.95

Free delivery: Sep 23 – 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 23 – 24

If paid before 14:00

Part no. 059121598L

Audi A7 4G Twin Turbo Coolant Feed Pipe Hose Line 3.0 TDI CGQB 059121598R

€42.95

Free delivery: Sep 23 – 24

If paid before 14:00

Part no. 04L906051C

Audi A5 8T Exhaust Gas Pressure Sensor Unit 2.0 TDI CNHA Diesel 04L131552DP

€23.95

Free delivery: Sep 23 – 24

If paid before 14:00

Part no. 079121065BN-1

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

€28.95

Free delivery: Sep 23 – 24

If paid before 14:00

Part no. 8K0819342L

Audi S5 8T 3.0 TFSI Coolant Water Hose Line Cooling Tube Pipe 8K0819342L

€23.95

Free delivery: Sep 23 – 24

If paid before 14:00

Part no. 04E121070L

Volkswagen Audi Seat Skoda Engine Plastic Water Coolant Pipe Hose 04E121070L

€23.95

Free delivery: Sep 23 – 24

If paid before 14:00

Part no. 7L8122096F

Audi Q7 4L Engine Coolant Hose Pipe Line Tube 7L8122096F

€37.95

Free delivery: Sep 23 – 24

If paid before 14:00

Part no. 83A121102A

Audi RSQ3 F3 Engine Cooling Coolant Hose Tube Line Pipe 83A121102A

€23.95

Free delivery: Sep 23 – 24

If paid before 14:00

Part no. 8K0121036F-1

Audi A4 B8 Water Hose Radiator Coolant Pipe 1.8 2.0 Petrol 8K0121036F

€23.95

Free delivery: Sep 23 – 24

If paid before 14:00

Part no. 5Q0122058K

Audi S3 8V TT 8S Q3 Mk2 2.0 Petrol Engine Coolant Hose Line Tube Pipe 5Q0122058K

€37.95

Free delivery: Sep 23 – 24

If paid before 14:00

Part no. 8K0819334AP

Audi S5 8T 3.0 TFSI Coolant Water Hose Line Tube Pipe 8K0819334AP

€23.95

Free delivery: Sep 23 – 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 23 – 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 23 – 24

If paid before 14:00

Part no. 06H121601P-1

Audi A6 C8 A7 4G Electric Auxiliary Water Pump With Bracket Petrol 4G0820195E

€51.95

Free delivery: Sep 23 – 24

If paid before 14:00

Part no. 06H133514K

Audi A5 8T 2.0 TFSI CDNB Vacuum Solenoid Coolant Line Tube Hose Pipe 06H133514K

€32.95

Free delivery: Sep 23 – 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 23 – 24

If paid before 14:00

Part no. 8E0121331

Audi A4 S4 RS4 B7 Upper Coolant Radiator Seal Gasket Rubber 8E0121331

€23.95

Free delivery: Sep 23 – 24

If paid before 14:00

Part no. 5Q0121064BB

Audi A3 8V Water Pipe Hose Engine Cooling Coolant Unit Line 5Q0121064BB

€23.95

Free delivery: Sep 23 – 24

If paid before 14:00

Part no. 8K0819332B

Water Pipe Audi A5 S5 8T S4 B8 8K 3.0 TFSI V6 Coolant Hose Line 8K0819332B

€23.95

Free delivery: Sep 23 – 24

If paid before 14:00

Part no. 4K0819342J

Audi A6 C8 Engine Coolant Pipe Line Heating Hose 2.0 TFSI Hybrid 4K0819342J

€66.95

Free delivery: Sep 23 – 24

If paid before 14:00

Part no. 06K121492F

Audi S3 8V VW Golf Mk7 Cooling Water Hose Coolant Pipe Line 2.0 TFSI 06K121492F

€23.95

Free delivery: Sep 23 – 24

If paid before 14:00

Part no. 059121064D

Audi A5 8T Water Hose Cooling Coolant Radiator Pipe Line 059121070E

€28.95

Free delivery: Sep 23 – 24

If paid before 14:00

Part no. 4G0819377Q

Audi A6 C7 4.0 TFSI CRDB Coolant Hose Pipe Tube 4G0819377Q

€23.95

Free delivery: Sep 23 – 24

If paid before 14:00

Part no. 5N0122157BG

Audi Q3 SE Mk1 Water Coolant Pipe Hose Line Tube 5N0122157BG

€23.95

Free delivery: Sep 23 – 24

If paid before 14:00

Part no. 1K0959455DH

Audi A3 8P Air Con Radiator Motor Cooling Fan 1K0959455DH

€23.95

Free delivery: Sep 23 – 24

If paid before 14:00

Part no. 04L121064AC

Audi A3 8V Engine Water Coolant Pipe Cooling Hose Line 04L121064AC

€28.95

Free delivery: Sep 23 – 24

If paid before 14:00

Part no. 03N117021A

Audi A4 B8 Oil Cooler Cooling Unit 2.0 TDI Diesel Engine 03N117021A

€23.95

Free delivery: Sep 23 – 24

If paid before 14:00

Part no. 5N0122086F

Audi Q3 SE Coolant Hose Engine Cooling System Hose Line Tube Pipe 5N0122086F

€51.95

Free delivery: Sep 23 – 24

If paid before 14:00

Part no. 1K0122073DD

VW Volkswagen Eos 1F Water Hose Cooling Coolant Radiator Pipe Line 1K0122073DD

€23.95

Free delivery: Sep 23 – 24

If paid before 14:00

Part no. 5Q0122073AL

Volkswagen Passat B8 Water Coolant Hose Tube Line Pipe 2.0 TDI 5Q0122073AL

€23.95

Free delivery: Sep 23 – 24

If paid before 14:00

Part no. 7L0121207D

Audi Q7 4L 3.0 TDI BUG Diesel A/C Air Condition Radiator Fan Shroud 7L0121207D

€104.95

Free delivery: Sep 22 – 24

If paid before 14:00

Part no. 83A121332A

Audi Q3 F3 Additional Cooler Sealing Strip Right O/S 83A121332A

€23.95

Free delivery: Sep 23 – 24

If paid before 14:00

Part no. 03L122157AA

Audi A4 B8 Water Hose Radiator Coolant Pipe Line 2.0 TDI Diesel 03L122157AA

€23.95

Free delivery: Sep 23 – 24

If paid before 14:00

Part no. 5N0121070M

Audi A3 8P Water Hose Cooling Radiator Coolant Pipe Line 5N0121070M

€23.95

Free delivery: Sep 23 – 24

If paid before 14:00

Part no. 4K0819460

Audi A6 C8 Engine Coolant Pipe Line Heating Hose 2.0 TFSI Hybrid 4K0819460

€47.95

Free delivery: Sep 23 – 24

If paid before 14:00

Part no. 5N0122073AH

Audi Q3 SE Mk1 2.0 TDI Water Coolant Pipe Hose Line Tube 5N0122073AH

€42.95

Free delivery: Sep 23 – 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 23 – 24

If paid before 14:00

Part no. 8W0819332D

Audi A4 B9 A5 F5 Water Hose Engine Cooling Coolant Pipe Line Diesel 8W0819332D

€23.95

Free delivery: Sep 23 – 24

If paid before 14:00

Part no. 8K0121101P

Audi A4 B8 2.0 TDI Diesel Water Pipe Engine Cooling Coolant Hose Line 8K0121101P

€23.95

Free delivery: Sep 23 – 24

If paid before 14:00

Part no. 8W0122291AH

Audi A4 B9 A5 F5 Coolant Water Pipe Grommet 2.0 TDI Diesel 8W0122291AH

€23.95

Free delivery: Sep 23 – 24

If paid before 14:00

Part no. 5N0122101AS

Audi Q3 SE Coolant Hose With Quick Release Coupling Upper 5N0122101AS

€85.95

Free delivery: Sep 23 – 24

If paid before 14:00

Part no. 06H121057H

Audi A4 S4 B8 8K A5 S5 8F 8T Thermostat Coolant Hose Pipe Line 06H121057H

€23.95

Free delivery: Sep 23 – 24

If paid before 14:00

Part no. 8E0317826T

Audi A4 B7 Gearbox Oil Cooler Pressure Line Pipe Hose 2.0 TFSI Petrol 8E0317826T

€56.95

Free delivery: Sep 23 – 24

If paid before 14:00

Part no. 079121071CF-1

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

€56.95

Free delivery: Sep 23 – 24

If paid before 14:00

Part no. 4G0121081EJ

Audi A7 Sportback 4G Coolant Hose Pipe 3.0 TDI Diesel 4G0121081EJ

€23.95

Free delivery: Sep 23 – 24

If paid before 14:00

Part no. 4K0121052H

Audi A6 C8 Engine Coolant Pipe Line Heating Hose 2.0 TFSI Hybrid 4K0121052H

€23.95

Free delivery: Sep 23 – 24

If paid before 14:00

Part no. 6R0122051BR

Water Hose Audi A1 S1 8X 2.0 Cooling Radiator Coolant Pipe Line 6R0122051BR

€66.95

Free delivery: Sep 23 – 24

If paid before 14:00

Part no. 5Q0121113F

Audi Q7 4M Water Coolant Thermosat Regulator Valve 5Q0121113F

€70.95

Free delivery: Sep 23 – 24

If paid before 14:00

Part no. 04E103474G

Audi A3 8V Tank Crankcase Breather Vent Pipe Line 04E103474G

€23.95

Free delivery: Sep 23 – 24

If paid before 14:00

Part no. 03L906088D

Audi A4 B8 Temperature Sensor Diesel Engine Exhaust Gas Sensor Probe 03L906088D

€23.95

Free delivery: Sep 23 – 24

If paid before 14:00

Part no. 057121073C

Audi Q7 4L 4.2 TDI Coolant Hose Pipe Hose Line 057121073C

€23.95

Free delivery: Sep 23 – 24

If paid before 14:00

Part no. 03N117021

Audi A3 8V A4 B8 Oil Cooler Cooling Unit 1.6 TDI Diesel Engine 03N117021

€23.95

Free delivery: Sep 23 – 24

If paid before 14:00

Part no. 8K1819350AQ

Audi A4 S4 B8 Water Hoses Cooling Coolant Radiator Pipes 3.0 TFSI 8K1819350AQ

€23.95

Free delivery: Sep 23 – 24

If paid before 14:00

Part no. 3Q0121205

Audi A3 S3 8V VW Volkswagen Golf MK7 Radiator Fan Engine Motor Cooling 3Q0121205

€170.95

Free delivery: Sep 22 – 24

If paid before 14:00

Part no. 03L121157AA

Audi A4 B8 A5 8T Water Hose Cooling Radiator Pipe Line 2.0 TDI 03L121157AA

€23.95

Free delivery: Sep 23 – 24

If paid before 14:00

Part no. 06E121045E

Audi A4 B7 Water Hose Radiator Coolant Pipe Line Tube 3.2 TFSI 06E121045E

€23.95

Free delivery: Sep 23 – 24

If paid before 14:00

Part no. 03L121071B

Coolant Pipe Audi A4 B8 A5 8T 2.0 TDI Water Cooling Line 03L121071B

€23.95

Free delivery: Sep 23 – 24

If paid before 14:00

Part no. 07L121070Q

Audi S8 D3 Quattro 5.2 FSI V10 BSM Coolant Pipe Right Water Line 07L121070Q

€23.95

Free delivery: Sep 23 – 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 23 – 24

If paid before 14:00

Part no. 03N115389H-1

Audi A4 B8 A5 8T Q5 8R Oil Filter Housing Cover 2.0 TDI 03N115389H

€32.95

Free delivery: Sep 23 – 24

If paid before 14:00

Part no. 1K0122109AL

Audi A5 8T Engine Water Coolant Pipe Cooling Hose Line 2.0 Petrol 1K0122109AL

€23.95

Free delivery: Sep 23 – 24

If paid before 14:00

Part no. 4H0121251C

Audi A8 D4 Coolant Water Radiator Cooler 4H0121251C

€137.95

Free delivery: Sep 22 – 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 23 – 24

If paid before 14:00

Part no. 8J0121051Q-1

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

€23.95

Free delivery: Sep 23 – 24

If paid before 14:00

Part no. 07K145778F

Audi RS3 8V 8Y Turbocharger Turbo Oil Feed Pipe Line Tube 2.5 TFSI 07K145778F

€80.95

Free delivery: Sep 23 – 24

If paid before 14:00

Part no. 7L0815987E

Audi Q7 4L Auxiliary Water Heater Feed Coolant Pipe Hose Diesel 7L0815987E

€23.95

Free delivery: Sep 23 – 24

If paid before 14:00

Part no. 8J0121156A

Audi TTS 8J Radiator Coolant Hose Pipe Tube Line 2.0 TFSI Petrol 8J0121156A

€32.95

Free delivery: Sep 23 – 24

If paid before 14:00

Part no. 03C121070M

Audi A1 8X Water Pipe Hose Line Engine Cooling Coolant Unit Hose 03C121070M

€23.95

Free delivery: Sep 23 – 24

If paid before 14:00

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