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 Q5 FY Water Coolant Pipe Hose Line 2.0 TDI Diesel 80A819350AP

€28.95

Part no. 8K0121251Q

Audi A4 B8 A5 8T Q5 8R Coolant Radiator Engine Cooling Unit Radiator 8K0121251Q

€80.95

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Audi A3 8P Q3 8U Water Hose Cooling Radiator Coolant Pipe Line 5N0122073L

€23.95

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

€32.95

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Audi A1 8X A3 8P TT 8J VW Golf Mk5 Water Coolant Hose Pipe Line 06F121056C

€47.95

Part no. 7L0965561L

Audi A4 B7 2.0 TDI Quattro Auxiliary Additional Water Pump 7L0965561L

€23.95

Part no. 8K1819376J

Audi A5 8T 2.0 TFSI Water Hose Cooling Coolant Radiator Pipe Line 8K1819376J

€23.95

Part no. 059121512N

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

€23.95

Part no. 06E121111AL

Audi S4 B8 Engine Water Coolant Thermostat Housing 3.0 TFSI Petrol 06E121111AL

€23.95

Part no. 059121054C

Audi A8 D4 3.0 TDI Diesel Coolant Water Hose Line Tube Pipe Engine 059121054C

€23.95

Part no. 059121005TX-1

Audi A7 4G Water Pump Coolant Circulation Cooling Unit 059121005TX

€47.95

Part no. 1K0122109

Audi A3 8P Water Hose Cooling Coolant Pipe Line 1K0122109

€23.95

Part no. 4H0819334L

Audi A8 D4 3.0 TDI Heater Hose Cooling Coolant Radiator Pipe Line 4H0819334L

€23.95

Part no. 5Q0121064BB

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

€23.95

Part no. 8J0121073D

Audi TT 8J Water Coolant Cooling Pipe Hose Line 2.0 TFSI CCZA 8J0121073D

€32.95

Part no. 5N0122073AC

Audi Q3 8U Water Hose Cooling Radiator Coolant Pipe Line 5N0122073AC

€23.95

Part no. 06M117015M

Audi S5 F5 Q5 FY Engine Oil Cooler Heat Exchanger 3.0 TFSI 06M117015M

€23.95

Part no. 05L122157AS

Audi A4 B9 A5 F5 Water Cooling Coolant Pipe Hose Line 2.0 TDI 05L122157AS

€28.95

Part no. 06E121044M

Audi A6 C7 A4 B8 A7 4G A8 D3 Coolant Hose Line Tube Pipe 06E121044M

€28.95

Part no. 4G0819374L

Audi A6 C7 A7 4G Coolant Hose Pipe Line 3.0 TDI CVUA 4G0819374L

€23.95

Part no. 06K121075BF

Engine Coolant Pipe Audi A3 S3 8V 2.0 TFSI Water Cooling Hose Line 06K121075BF

€28.95

Part no. 1K0121207AA

Engine Cooling Radiator Audi A3 8P Diesel Radiator Coolant Fan 1K0121207AA

€113.95

Part no. 4F0121107AH

Audi A6 C6 Water Coolant Pipe Hose Line 2.0 TFSI 4F0121107AH

€23.95

Part no. 05L122157CG

Audi A4 B9 A5 F5 Engine Cooling Coolant Pipe Line Hose 2.0 TDI 05L122157CG

€23.95

Part no. 8W0906088F

Audi A4 B9 2.0 TDI DETA Diesel Exhaust Gas Temperature Sensor 8W0906088F

€23.95

Part no. 1K0122101JL

Audi TT UJ Upper Radiator Coolant Cooling Pipe Line Hose 2.0 Petrol 1K0122101JL

€23.95

Part no. 8K0121036E

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

€23.95

Part no. 059145771AQ

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

€28.95

Part no. 04L121064AC

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

€28.95

Part no. 1K0122157DT

Audi A3 8P VW Golf Mk5 Mk6 Coolant Hose Water Pipe Line 1K0122157DT

€37.95

Part no. 1T0820036D

AUDI Q7 4L 3.0 TDI Quattro Coolant Electro Magnetic Valve Water Line 1T0820036D

€32.95

Part no. 06M121115K

Thermostat Housing Audi A4 B9 A5 F5 Petrol Engine Water Coolant 06M121115K

€37.95

Part no. 5Q0122101BP

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

€23.95

Part no. 8R0121081M

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

€23.95

Part no. 5Q0121070BR-2

Audi A3 8V 2.0 TFSI Water Hose Engine Coolant Cooling Pipe Line 5Q0121070BR

€37.95

Part no. 4G0121403C

Audi RS6 C7 Expansion Overflow Coolant Reservoir Bottle Tank 4G0121403C

€23.95

Part no. 5N0122101AT

Audi Q3 8U 2.0 TDI DFTA Engine Radiator Upper Water Coolant Hose 5N0122101AT

€28.95

Part no. 06J145771D

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

€23.95

Part no. 4G0121448BN

Audi A6 C7 A7 4G Coolant Hose Pipe Line 3.0 TDI CVUA 4G0121448BN

€23.95

Part no. 059121051H

Audi A5 F5 Engine Coolant Water Pipe Hose Line 3.0 TDI Diesel Engine 059121051H

€23.95

Part no. 8K1819371AB

Audi A4 B8 A5 8T Coolant Pipe Hose Line Heat Exchanger 1.8 TFSI 8K1819371AB

€28.95

Part no. 059121102C

Audi A4 B8 A5 8T A6 C6 Coolant Hose Line Tube Pipe 3.0 TDI 059121102C

€23.95

Part no. 4G0122056B

Audi A6 C7 A7 4G Coolant Hose Pipe Line 3.0 TDI CVUA 4G0121448BN

€32.95

Part no. 8K0133889B

Audi RS4 B8 4.0 FSI CFSA Petrol Coolant Hose Upper Top Left O/S 8K0133889B

€23.95

Part no. 07K121029

Audi RSQ3 8U Engine Coolant Water Pump Pulley 2.5 TFSI 07K121029

€23.95

Part no. 3Q0121070R

VW Tiguan AD1 2.0 TDI Water Hose Cooling Radiator Coolant Pipe Line 3Q0121070R

€28.95

Part no. 6C0122157N

Audi A1 8X Engine Coolant Pipe Hose Tube Line 1.6 TDI Diesel CXMA 6C0122157N

€23.95

Part no. 1K0122073B

Audi Seat Skoda Volkswagen Water Return Coolant Pipe Hose Line 1K0122073B

€23.95

Part no. 1K0121049CB

Audi A3 8P Water Coolant Pipe Hose Line Tube 1.2 TFSI 1K0121049CB

€42.95

Part no. 8K0121081BA

Audi RS4 B8 Radiator Water Coolant Pipe Hose Line 4.2 FSI QUATTRO 8K0121081BJ

€32.95

Part no. 7L8121157D

Audi Q7 4L Water Coolant Pipe Hose 3.0 TDI V6 Diesel CRC 7L8121157D

€32.95

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Audi S4 B8 S5 8T 3.0 TFSI CRE Supercharger Coolant Hose Pipe Line 06E121083M

€32.95

Part no. 04L122157BA

Audi A5 8T Heater Water Cooling Coolant Pipe Hose Line 04L122157BA

€23.95

Part no. 5Q0121049AD

Volkswagen Audi A3 8V Seat Petrol Water Coolant Pipe Hose Line 5Q0121049AD

€23.95

Part no. 022121011

Audi A3 8P 3.2 BMJ Petrol Engine Water Coolant Pump 022121011

€42.95

Part no. 3Q0963231F

Volkswagen Golf MK7 Passat B8 Audi A6 C8 Water Coolant Heater Module 3Q0963231F

€85.95

Part no. 06H121026CC

Audi A3 8P A4 S4 B8 Water Pump Coolant Regulator Thermostat 1.8 TFSI 06H121026DC

€85.95

Part no. 06Q145778D

Audi S3 8Y 2.0 TFSI Turbocharger Oil Feed Pipe Hose Line 06Q145778D

€42.95

Part no. 6C0122447K-1

Audi A1 8X VW Polo Mk5 Water Coolant Pipe Hose Line 1.4 TSI 6C0122447K

€37.95

Part no. 06E121044L

Audi S5 8T A4 S4 B8 A6 C7 Engine Water Coolant Pipe Hose Tube Line 06E121044L

€23.95

Part no. 05L919501B

Audi A4 B9 Q5 FY A6 C8 A7 C8 Water Coolant Temperature Sensor 2.0 TDI 05L919501B

€23.95

Part no. 03L121157AE-1

Audi A6 C7 Q5 8R Water Coolant Pipe Hose Tube 2.0 TDi 03L121157AE

€28.95

Part no. 06H121026BA

Audi A4 B8 Water Pump 2.0 TFSI Petrol Engine Coolant Unit 06H121026BA

€94.95

Part no. 4H0121081AB

Audi A8L 4H Expansion Bottle Tank Radiator Hose Line Tube Pipe 4H0121081AB

€23.95

Part no. 8J0121051P

Audi TT 8J Engine Water Coolant Pipe Hose Line 2.0 TDI Diesel Engine 8J0121051P

€32.95

Part no. 7H0819617

Audi Q7 4L Webasto Auxiliary Water Heater Air Filter Unit Pipe 7H0819617

€23.95

Part no. 5Q0122101CK

Audi A3 8V 1.6 Diesel Engine Coolant Hose Line Tube Pipe Right O/S 5Q0122101CK

€23.95

Part no. 07L121070Q

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

€23.95

Part no. 045115389H-1

Audi A5 8T A3 8P A6 C6 A4 B8 Diesel Engine Oil Filter Housing Cooler 045115389H

€32.95

Part no. 06E121018E

Audi A6 C7 A7 4G A8 D3 Petrol Engine Cooling Fluid Coolant Pump 06E121016

€28.95

Part no. 04L122157BC

Audi A5 8T Heater Water Cooling Coolant Pipe Hose Line 04L122157BC

€32.95

Part no. 06N121085D

Audi A4 B9 A5 F5 A6 A7 C8 Radiator Water Coolant Hose Pipe Line Left 06N121085D

€66.95

Part no. 059121075DK

Audi A8 D4 Coolant Cooling Hose Pipe Line Tube 059121075DK

€28.95

Part no. 06L121081AF

Audi A4 B9 A5 F5 A6 A7 C8 A8 D5 Q5 F8 Engine Coolant Hose Pipe Line 06L121081AF

€37.95

Part no. 83A819371

Audi RSQ3 F3 Engine Cooling Coolant Hose Line Tube Pipe 83A819371

€70.95

Part no. 8K0121251K

Audi A4 B8 Coolant Radiator Engine Cooling Unit Radiator 8K0121251K

€80.95

Part no. 4G0122445L

Audi A6 C7 A7 4G Coolant Cooling Pipe Hose Line Petrol Engine 4G0122445L

€23.95

Part no. 420121030A

Audi R8 42 Engine Coolant Pipe Water Hose Cooling Line Tube 420121030A

€56.95

Part no. 8E0121044K

Audi A4 B7 Radiator Coolant Hose Line Pipe Tube Water Cooler 8E0121044K

€56.95

Part no. 4G0121263

Audi RS6 RS7 Additional Water Coolant Radiator Support Carrier Mount 4G0121263

€23.95

Part no. 059121111N

Audi Q7 4L Diesel Engine Thermostat Housing 3.0 TDI 059121111N

€28.95

Part no. 6R0121051L

Audi A1 8X Seat Toledo KG Skoda Rapid NH Coolant Hose Pipe Line 6R0121051L

€23.95

Part no. 7L0959455D

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

€47.95

Part no. 059117021E

Audi A8 D3 3.0 TDI Quattro ASB Engine Oil Cooler 059117021E

€32.95

Part no. 6R0122101AQ

Audi A1 8X Coolant Cooling Engine Pipe Hose Line Radiator 6R0122101AQ

€23.95

Part no. 079121481R

Audi RS4 B7 Engine Lower Coolant Pipe Hose Line 4.2 FSI 079121481R

€32.95

Part no. 420121082B

Audi R8 42 Engine Coolant Pipe Water Hose Cooling Line Tube 420121082B

€42.95

Part no. 04L121131AD

Audi A5 8T Water Coolant Flange Pipe Hose Line 04L121131AD

€23.95

Part no. 04L121064F

Audi A1 8X Q3 8U Engine Coolant Hose Pipe Line Tube 1.6 TDi Diesel 04L121064F

€28.95

Part no. 04L121064AE

Volkswagen Seat Skoda Audi 2.0 TDI Water Coolant Pipe Hose Line 04L121064AE

€23.95

Part no. 5Q0122101CM-1

Audi A3 8V 35 TDI DFGA Water Coolant Hose Line Pipe Tube 5Q0122101CM

€23.95

Part no. 8K0819334BC

Audi A4 B8 A5 8T Water Coolant Hose Line Pipe 3.0 TFSI Petrol 8K0819334BC

€23.95

Part no. 05L121011D-2

VW Volkswagen Golf CD1 Engine Coolant Water Pump DTSB 2.0 TDI Diesel 01Q220802RT

€165.95

Part no. 8E0965559

Audi RS4 B7 Additional Water Pump Coolant Cooling Unit A8E0965559

€37.95

Part no. 8K0965567B

Audi A6 C8 Water Electric Pump Auxiliary Coolant Circulation 8K0965567B

€113.95

Part no. 8K0907659

Audi A4 B8 A5 8T AUC Sensor Interior Air Quality Unit 8K0907659

€23.95

Part no. 1K0122101KR

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

€23.95

Part no. 04L122157BE

Audi A5 8T 2.0 TDI CNHA Water Coolant Pipe Tube Line Hose 04L122157BE

€23.95

Part no. 04L121065AJ

Volkswagen Seat Skoda Audi 2.0 TDI Water Coolant Pipe Hose Line 04L121065AJ

€23.95

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