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 A7 S7 4G 4.0 TFSI Water Pump Coolant Cooling Unit 079121014M

€89.95

Free delivery: Sep 23 – 24

If paid before 14:00

Part no. 5Q0121599AA

Audi A3 S3 8V Auxiliary Water Pump Coolant Circulation Cooling Unit 5Q0121599AA

€66.95

Free delivery: Sep 23 – 24

If paid before 14:00

Part no. 8V0121109

Audi A3 RS3 8V 8Y Water Coolant Hose Pipe Hose Line 2.5 TFSI 8V0121109

€23.95

Free delivery: Sep 23 – 24

If paid before 14:00

Part no. 5Q0122051EG

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

€47.95

Free delivery: Sep 23 – 24

If paid before 14:00

Part no. 4F0121251Q

Audi A6 C6 2.0 TDI Engine Cooling Radiator For Manual Gearbox 4F0121251Q

€47.95

Free delivery: Sep 22 – 24

If paid before 14:00

Part no. 06D121497A

Audi A4 B7 Turbocharger Water Coolant Pipe Hose Line 2.0 TFSI 06D121497A

€28.95

Free delivery: Sep 23 – 24

If paid before 14:00

Part no. 5N0121064H

Audi Q3 8U Volkswagen Tiguan 5N Coolant Hose Metal Pipe Radiator 5N0121064H

€37.95

Free delivery: Sep 23 – 24

If paid before 14:00

Part no. 4G0317021M

Audi A7 A6 4G Gearbox Oil Cooler 3.0 Diesel 4G0317021M Automatic Transmission

€23.95

Free delivery: Sep 23 – 24

If paid before 14:00

Part no. 5Q0121109S

Audi A3 8V Water Coolant Engine Cooling Flange Pipe Hose Line 5Q0121109S

€23.95

Free delivery: Sep 23 – 24

If paid before 14:00

Part no. 4G0122101AE

Water Hose Audi A4 B8 A6 C7 2.0 TDI Cooling Radiator Pipe Line 4G0122101AE

€23.95

Free delivery: Sep 23 – 24

If paid before 14:00

Part no. 5N0121447Q

Audi Q3 8U Water Coolant Pipe Hose Line 2.0 TDI 5N0121447Q

€23.95

Free delivery: Sep 23 – 24

If paid before 14:00

Part no. 059906088A

Audi A5 8T 3.0 TDI CCWA Diesel Exhaust Gas Temperature Sensor 059906088A

€28.95

Free delivery: Sep 23 – 24

If paid before 14:00

Part no. 06H145771

Audi A4 B8 Turbocharger Oil Feed Tube Pipe Line Hose 1.8 TFSI Petrol 06H145771

€32.95

Free delivery: Sep 23 – 24

If paid before 14:00

Part no. 04L121071E

Audi A3 8V VW Golf Mk7 Thermostat Housing Coupling 2.0 TDI 04L121071E

€23.95

Free delivery: Sep 23 – 24

If paid before 14:00

Part no. 05L121011D

Audi A4 B9 Volkswagen Arteon 3H Engine Coolant Water Pump 2.0 TDI 05L121011D

€142.95

Free delivery: Sep 23 – 24

If paid before 14:00

Part no. 4H0121207C-1

Audi S6 C7 S7 4G Engine Cooling Radiator Fan 4.0 TFSI 4H0121207C

€289.95

Free delivery: Sep 23 – 24

If paid before 14:00

Part no. 5Q0121070BR-1

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

€42.95

Free delivery: Sep 23 – 24

If paid before 14:00

Part no. 4F0121403N

Audi A6 C6 Coolant Expansion Tank Reservoir Bottle Fluid Tank 4F0121403N

€23.95

Free delivery: Sep 23 – 24

If paid before 14:00

Part no. 06K115243R

Audi S1 8X A3 8Y Oil Pressure Control Valve 2.0 TFSI CWZA 06K115243R

€23.95

Free delivery: Sep 23 – 24

If paid before 14:00

Part no. 06A121065AP

Audi A3 8P Coolant Hose Water Pump Pipe Cooling Line 1.6 Petrol 06A121065AP

€23.95

Free delivery: Sep 23 – 24

If paid before 14:00

Part no. 059145771AC

Audi A5 8T 3.0 TDI CCWA Turbo Oil Feed Pipe Line Hose Tube 059145771AC

€23.95

Free delivery: Sep 23 – 24

If paid before 14:00

Part no. 4E0907658

Audi Q7 4L A8 D3 Air Moisture Humidity Sensor Control Unit 4E0907658

€23.95

Free delivery: Sep 23 – 24

If paid before 14:00

Part no. 8W0819342L-1

Audi A5 F5 Water Return Coolant Pipe Hose Flow Line 8W0819342L

€32.95

Free delivery: Sep 23 – 24

If paid before 14:00

Part no. 4K0145910G

Audi A6 C8 Water Hose Coolant Cooling Pipe Line 4K0145910G

€23.95

Free delivery: Sep 23 – 24

If paid before 14:00

Part no. 1K0122101DK

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

€28.95

Free delivery: Sep 23 – 24

If paid before 14:00

Part no. 8W0819885B

Audi A5 S5 F5 Water Hose Cooling Coolant Radiator Pipe Line 3.0 TDI 8W0819885B

€32.95

Free delivery: Sep 23 – 24

If paid before 14:00

Part no. 079121036D

Audi RS4 B8 Engine Cooling Coolant Water Hose Pipe Line 079121036D

€32.95

Free delivery: Sep 23 – 24

If paid before 14:00

Part no. 079121055AC

Audi RS4 B8 Engine Cooling Coolant Hose Pipe Line Front Left N/S 079121055AC

€37.95

Free delivery: Sep 23 – 24

If paid before 14:00

Part no. 06E121044L-1

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

€23.95

Free delivery: Sep 23 – 24

If paid before 14:00

Part no. 4G0121263

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

€23.95

Free delivery: Sep 23 – 24

If paid before 14:00

Part no. 1K0122101JQ

Audi A3 8P VW Golf Mk6 2.0 TDI CFFB Coolant Water Hose Pipe Line 1K0122101JQ

€85.95

Free delivery: Sep 23 – 24

If paid before 14:00

Part no. 079121081

Audi S7 4G 4.0 TFSI Coolant Hose Engine Water Pipe Front Upper 079121081

€28.95

Free delivery: Sep 23 – 24

If paid before 14:00

Part no. 079121065BR

Audi RS4 B8 RS5 8T Engine Cooling Pipe Water Coolant Hose 4.2 Petrol 079121065BR

€23.95

Free delivery: Sep 23 – 24

If paid before 14:00

Part no. 06D121065L

Audi A4 B7 Water Coolant Pipe Hose Line 2.0 TFSI 06D121065L

€23.95

Free delivery: Sep 23 – 24

If paid before 14:00

Part no. 06E121031E

Audi A4 S4 B8 Coolant Pump Pulley Water Pump Wheel 3.0 Petrol Engine 06E121031E

€32.95

Free delivery: Sep 23 – 24

If paid before 14:00

Part no. 2Q0121321A-1

SEAT Audi Volkswagen Skoda Water Coolant Expansion Tank Cap Cover 3C0121321

€23.95

Free delivery: Sep 23 – 24

If paid before 14:00

Part no. 079121071CJ

Audi RS4 B8 RS5 8T Engine Cooling Pipe Water Hose Line 4.2 V8 FSI 079121071CJ

€189.95

Free delivery: Sep 23 – 24

If paid before 14:00

Part no. 4G0819374G

Audi A6 C7 A7 4G Water Coolant Pipe Hose Line 3.0 TDI 4G0819374G

€23.95

Free delivery: Sep 23 – 24

If paid before 14:00

Part no. 06E121005F

Coolant Water Pump Audi A4 B7 B8 S4 B8 Additional Pump 06E121005F

€23.95

Free delivery: Sep 23 – 24

If paid before 14:00

Part no. 8R0121055H-1

Audi Q5 8R Water Cooling Pipe Coolant Hose Tube Line 8R0121055H 4F0122293A

€28.95

Free delivery: Sep 23 – 24

If paid before 14:00

Part no. 5N0122073AC

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

€23.95

Free delivery: Sep 23 – 24

If paid before 14:00

Part no. 8W0145925P

Audi A4 B9 A5 F5 Water Coolant Pipe Hose 2.0 TDI 8W0145925P

€32.95

Free delivery: Sep 23 – 24

If paid before 14:00

Part no. 4H0959455AE

Audi A5 8T A6 C7 A7 4G Radiator Fan Motor Right O/S 3.0 TDI 4H0959455AE

€156.95

Free delivery: Sep 22 – 24

If paid before 14:00

Part no. 8W0121487Q

Audi A4 B9 A5 F5 Q5 FY Water Coolant Hose Pipe Line 3.0 TDI 8W0121487Q

€23.95

Free delivery: Sep 23 – 24

If paid before 14:00

Part no. 8K1819376L

Audi A4 B8 8K A5 8T Engine Water Coolant Pipe Hose Line Diesel 8K1819376L

€23.95

Free delivery: Sep 23 – 24

If paid before 14:00

Part no. 079121071CM

Audi RS6 C7 RS7 4G Engine Coolant Pipe Rear Left N/S 4.0 TFSI 079121071CM

€23.95

Free delivery: Sep 23 – 24

If paid before 14:00

Part no. 8K0121049M

Water Pipe Audi A4 B8 A5 8T 2.0 TFSI Coolant Hose Line 8K0121049M

€23.95

Free delivery: Sep 23 – 24

If paid before 14:00

Part no. 8W0145920M

Audi A5 F5 Water Hose Cooling Radiator Coolant Pipe Line 2.0 TDI 8W0145920M

€47.95

Free delivery: Sep 23 – 24

If paid before 14:00

Part no. 022121011

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

€42.95

Free delivery: Sep 23 – 24

If paid before 14:00

Part no. 8E0819376C

Audi RS4 B7 Engine Water Coolant Pipe Hose Line 4.2 V8 BNS 8E0819376C

€51.95

Free delivery: Sep 23 – 24

If paid before 14:00

Part no. 06E121044L-2

Audi S5 8T A4 S4 B8 A6 C7 Water Coolant Pipe Hose Line 3.0 TFSI 06E121044L

€23.95

Free delivery: Sep 23 – 24

If paid before 14:00

Part no. 4F0121284AS

Audi A6 C6 3.0 TDI Front Right O/S Radiator Air Duct Guide Channel 4F0121284AS

€23.95

Free delivery: Sep 23 – 24

If paid before 14:00

Part no. 4G0145931G

Audi A4 B8 A5 8T 2.0 TDI Water Coolant Pipe Hose Line 4G0145931G

€23.95

Free delivery: Sep 23 – 24

If paid before 14:00

Part no. 03G145771J

Audi A3 8P 1.9 TDI BLS Diesel Turbo Feed Oil Pipe Line Inlet Hose 03G145771J

€23.95

Free delivery: Sep 23 – 24

If paid before 14:00

Part no. 06D121132A

Audi A4 B7 Water Coolant Flange Pipe Hose Line 2.0 TFSI 06D121133C

€23.95

Free delivery: Sep 23 – 24

If paid before 14:00

Part no. 5Q0121407G

Audi A3 8V Expansion Tank Header Coolant Reservoir Bottle 5Q0121407G

€23.95

Free delivery: Sep 23 – 24

If paid before 14:00

Part no. 4G0145909B

Audi A4 B8 A5 8T 2.0 TDI Water Coolant Pipe Hose Line 4G0145909B

€23.95

Free delivery: Sep 23 – 24

If paid before 14:00

Part no. 80A121400B

Audi Q5 FY Water Hose Cooling Coolant Radiator Pipe Line 80A121400B

€47.95

Free delivery: Sep 23 – 24

If paid before 14:00

Part no. 03L121157Q

Audi Q3 SE Water Hose Cooling Coolant Radiator Pipe Line Hose 03L121157Q

€23.95

Free delivery: Sep 23 – 24

If paid before 14:00

Part no. 1K0959455ES

Audi A3 8P Radiator Fan Engine Cooling Cooler Blower Unit 1K0959455ES

€23.95

Free delivery: Sep 23 – 24

If paid before 14:00

Part no. 4G0145910B

Audi A4 B8 A5 8T 2.0 TDI Water Coolant Pipe Hose Line 4G0145910B

€23.95

Free delivery: Sep 23 – 24

If paid before 14:00

Part no. 04E122447M

Audi Q3 8U Coolant Hose Tube Line Pipe 04E122447M

€32.95

Free delivery: Sep 23 – 24

If paid before 14:00

Part no. 079121036C

Audi RS4 RS5 B8 8T Engine Coolant Hose Pipe 4.2 V8 CFSA 079121036C

€37.95

Free delivery: Sep 23 – 24

If paid before 14:00

Part no. 4G2819350K

Audi A7 4G Heater Radiator Hose Line Pipe 4G2819350K

€32.95

Free delivery: Sep 23 – 24

If paid before 14:00

Part no. 8K1819376D

Audi A4 B8 8K A5 8T Petrol Engine Water Coolant Pipe Hose Line 8K1819376D

€23.95

Free delivery: Sep 23 – 24

If paid before 14:00

Part no. 079121081B

Audi S7 4G 4.0 TFSI Coolant Hose Engine Water Pipe Front Upper 079121081B

€28.95

Free delivery: Sep 23 – 24

If paid before 14:00

Part no. 1K0122109

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

€23.95

Free delivery: Sep 23 – 24

If paid before 14:00

Part no. 5N0122051BG

Audi Q3 8U Coolant Hose Tube Pipe Line 5N0122051BG

€23.95

Free delivery: Sep 23 – 24

If paid before 14:00

Part no. 06K121075Q

Audi S3 8V Water Hose Cooling Coolant Radiator Pipe Line 06K121075Q

€23.95

Free delivery: Sep 23 – 24

If paid before 14:00

Part no. 5N0122157BE

Audi Q3 8U Coolant Hose Tube Line Pipe Quick Release Coupling 5N0122157BE

€23.95

Free delivery: Sep 23 – 24

If paid before 14:00

Part no. 079121096T

Audi A5 S5 8T Oil Cooler Coolant Pipe Hose Tube Line 079121096T

€23.95

Free delivery: Sep 23 – 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 23 – 24

If paid before 14:00

Part no. 5N0122101AP

Audi Q3 8U Coolant Hose Tube Line Pipe 5N0122101AP

€56.95

Free delivery: Sep 23 – 24

If paid before 14:00

Part no. 4N0820541

Audi A7 C8 Q7 4M Temperature Sensor Interior Sensor 4N0820541

€23.95

Free delivery: Sep 23 – 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 23 – 24

If paid before 14:00

Part no. 80A819350AP

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

€28.95

Free delivery: Sep 23 – 24

If paid before 14:00

Part no. 1J0959481A

Audi TT 8N Radiator Fan Switch Temperature Sensor 1J0959481A

€23.95

Free delivery: Sep 23 – 24

If paid before 14:00

Part no. 420121252AL

Audi R8 42 Additional Auxiliary Radiator Left N/S Cooling Unit 420121252AL

€237.95

Free delivery: Sep 22 – 24

If paid before 14:00

Part no. 022121117C

Audi A3 8P 3.2 BMJ Petrol Engine Water Thermostat Coolant Housing 022121117C

€28.95

Free delivery: Sep 23 – 24

If paid before 14:00

Part no. 07L121107C

Audi S8 D3 Radiator Coolant Water Hose Pipe Line 07L121107C

€23.95

Free delivery: Sep 23 – 24

If paid before 14:00

Part no. 04L121070AB

Audi Q3 8U 2.0 TDI DFUA Diesel Water Coolant Hose Pipe Tube Line 04L121070AB

€23.95

Free delivery: Sep 23 – 24

If paid before 14:00

Part no. 06M121481L

Audi A4 S4 B9 3.0 TFSI Petrol Water Coolant Pipe Hose Line 06M121481L

€70.95

Free delivery: Sep 23 – 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 23 – 24

If paid before 14:00

Part no. 03L117021C

Audi Volkswagen Seat Skoda Diesel Oil Filter Housing Oil Cooler 03L117021C

€23.95

Free delivery: Sep 23 – 24

If paid before 14:00

Part no. 06H906517Q

Audi A3 8V 2.0 TFSI CZPB Oil Separator Breather Valve 06H906517Q

€28.95

Free delivery: Sep 23 – 24

If paid before 14:00

Part no. 06F121056C

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

€47.95

Free delivery: Sep 23 – 24

If paid before 14:00

Part no. 8J0121073D

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

€32.95

Free delivery: Sep 23 – 24

If paid before 14:00

Part no. 06F129101R

Audi A3 8P TT 8J VW Golf GTI 2.0 TFSI Breather Valve Oil Separator 06F129101R

€23.95

Free delivery: Sep 23 – 24

If paid before 14:00

Part no. 059121008J

Audi A5 8T 3.0 TDI CDUC Coolant Water Pump 059121008J

€32.95

Free delivery: Sep 23 – 24

If paid before 14:00

Part no. 1K0122101JL

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

€23.95

Free delivery: Sep 23 – 24

If paid before 14:00

Part no. 06M117015M

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

€23.95

Free delivery: Sep 23 – 24

If paid before 14:00

Part no. 8R0145910B

Audi Q5 8R 2.0 TDI Quattro Water Hose Coolant Pipe Line 8R0145910B

€28.95

Free delivery: Sep 23 – 24

If paid before 14:00

Part no. 06E121044M

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

€28.95

Free delivery: Sep 23 – 24

If paid before 14:00

Part no. 4G0819374L

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

€23.95

Free delivery: Sep 23 – 24

If paid before 14:00

Part no. 4E0965559D

Audi S8 D3 Additional Water Coolant Pump 4E0965559D

€56.95

Free delivery: Sep 23 – 24

If paid before 14:00

Part no. 4F0121107AH

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

€23.95

Free delivery: Sep 23 – 24

If paid before 14:00

Part no. 05L122157AS

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

€28.95

Free delivery: Sep 23 – 24

If paid before 14:00

Part no. 4F0145738F

Audi A6 C6 3.0 TDI Diesel Turbo Charger Intercooler Pipe Hose Duct 4F0145738F

€23.95

Free delivery: Sep 23 – 24

If paid before 14:00

Part no. 04L121065AK

Audi A5 8T Heater Water Cooling Coolant Pipe Hose Line 04L121065AK

€23.95

Free delivery: Sep 23 – 24

If paid before 14:00

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