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 S4 8K A5 S5 8F Auxiliary Coolant Water Pump Bracket Mount 03L121093F

€42.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 059121075FH

Audi A6 C8 Engine Cooling Coolant Pipe Hose Tube Line 3.0 TDI DDVB 059121075FH

€75.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 5Q0122101BL

Audi A3 8V 2.0 TDI Water Hose Radiator Coolant Pipe Line Diesel 5Q0122101BL

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 6R0122101CA

Audi A1 8X Coolant Hose Water Pump Pipe Cooling Line 1.4 Petrol 6R0122101CA

€32.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 8N0121070B

Audi TT 8N Radiator Coolant Hose Pipe Tube Line 1.8 Petrol BAM 8N0121070B

€132.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 079121013P

Audi S5 8T Coolant Water Pump Thermostat Assembly 079121013P

€237.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 1K0121205AC

Audi A3 8P 1.6 TDI Radiator Fan Motor Engine Cooling Fan 1K0121205AC

€47.95

Free delivery: Nov 10 – 13

If paid before 14:00

Part no. 06L145778H

Audi A5 8T Oil Feed Hose Pipe Line 2.0 TFSI Petrol Engine 06L145778H

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 8V0121030B

Audi RS3 8V RSQ3 F3 Water Coolant Hose Pipe Line 2.5 TFSI 8V0121030B

€37.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 1K0959455ET

Audi S3 8P 2.0 TFSI CDLA Cooling Radiator Fan Shroud Right O/S 1K0959455ET

€32.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 06E121065Q

Audi A4 B8 A6 C7 A7 4G A8 D3 Coolant Flange Pipe Hose Line Tube 06E121065Q

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 2Q0122109E

Audi A1 GB Water Coolant Cooling Pipe Hose Line 1.0 TFSI Petrol 2Q0122109E

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 06D121065J

Audi A4 B7 A6 C6 Coolant Hose Line Tube Pipe 2.0 TFSI 06D121065J

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 06K103495AG

Audi A3 8V Q3 8U Engine Oil Separator Breather Petrol 2.0 TFSI CULB 06K103495AG

€28.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 2Q0122101BP-1

Audi A1 Coolant Cooling Hose Pipe Line 1.0 TFSI Petrol 2Q0122101BP

€56.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 8K0121405E

Audi A5 8T Expansion Tank Header Coolant Reservoir Bottle 8K0121405E

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 8K0819342P

Audi A4 B8 A5 S5 8T Coolant Hose Pipe Tube Line 3.0 TFSI Petrol 8K0819342P

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 8K0819377C-1

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

€28.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 2Q0122157B

Audi A1 GB Coolant Cooling Hose Pipe Line 1.0 TSI Petrol 2Q0122157B

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 04L121113D

Audi A4 B9 Thermostat Housing Coolant Regulator 2.0 TDI DEUA 04L121113D

€70.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 83A121101A

Audi RSQ3 F3 Engine Coolant Hose Tube Line Pipe 2.5 TFSI QUATTRO DNWA 83A121101A

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 06M121137AH

Audi A4 B9 A5 F5 Water Coolant Pipe Hose Cooling Line 06M121137AH

€28.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 04E121600BE

Audi A3 8V Seat Ateca Kh7 Coolant Pump D Water Pump 04E121600BE

€28.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 079121102F

Audi S5 8T Engine Water Coolant Rubber Pipe Hose 4.2 FSI 079121102F

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 06L121085K

Audi A4 B8 A5 8T Water Coolant Pipe Hose 2.0 TFSI Petrol Engine 06L121085K

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 1K0121251AT

Volkswagen Jetta Golf 1K Audi A3 S3 Engine Radiator Water Cooler 1K0121251AT

€42.95

Free delivery: Nov 10 – 13

If paid before 14:00

Part no. 8K0121276A

Audi A4 B8 A5 8T Q5 8R Coolant Radiator Mount Holder Bracket Rubber 8K0121276A

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 7L8121073A

Audi Q7 4L Engine Coolant Hose Tube Line Pipe 7L8121073A

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 4G0122101G

Audi A6 C7 2.0 TDI CGLC Water Coolant Hose Line Tube Pipe 4G0122101G

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 06J117021J

Audi A3 8P TT 8J A4 B7 Oil Cooler 1.8 2.0 TFSI Petrol Engine 06J117021J

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 07K121063D

Audi RSQ3 8U RS3 8P Water Coolant Pipe Hose Line Tube Petrol Engine 07K121063F

€61.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 059121399B

Audi A4 B8 A5 8T Q7 4L Coolant Pipe Hose Engine Cooling Line 3.0 TDI 059121399B

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 1K0133366BK

Audi A3 8P FL TT 8J 1.8 Petrol CDAA Water Coolant Connection Hose 1K0133366BK

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 03G906088AP

Audi A4 B7 Exhaust Gas Temperature Sensor Unit Diesel Engine 03G906088AP

€28.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 5Q0122157CK

Audi A3 8V Water Hose Cooling Radiator Coolant Pipe Line 2.0 TDI 5Q0122157CK

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 7L8122096A

Audi Q7 4L Water Coolant Pipe Hose Line 3.0 TDI 7L8122096A

€51.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 079121065BJ

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

€32.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 1K0121063AA

Audi A3 8P VW Golf Mk6 Seat Altea Engine Coolant Hose 1.4 Petrol 1K0121063AA

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 6R0122101DJ-1

Audi A1 S1 8X Water Coolant Pipe Hose Line 2.0 TFSI 6R0122101DJ

€32.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 8P0820741A

Audi RS3 8P Refrigerant Hose Cooling Radiator Coolant Pipe Line 8P0820741A

€47.95

Free delivery: Nov 10 – 13

If paid before 14:00

Part no. 03L121111AD

Audi A4 B8 A5 8T Q5 8RB 2.0 TDI Diesel Thermostat Coolant 03L121111AD

€28.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 8J0121447F

Audi TT 8J 1.8 Petrol CDAA Engine Coolant Vent Hose Pipe 8J0121447F

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 8K0121055L-1

Audi A4 B8 Water Hose Cooling Coolant Radiator Pipe Line Diesel 8K0121055L

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 8K0819334AD

Audi A4 B8 Heating Auxiliary Heater Pipe Hose Line 8K0819334AB

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 8K0145879D

Audi A4 S4 8K A5 S5 8F 8T Additional Coolant Pump Bracket Mount 8K0145879D

€75.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 8E0965557A

Audi A4 S4 RS4 B7 Coolant Pump Bracket Mount Holder Support 8E0965557A

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 04E121064E

Audi A3 8V Q3 8U VW Golf 5G Scirocco Mk3 Coolant Pipe Hose Tube Line 04E121064E

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 4G0121447AL

Audi A7 4G Coolant Cooling Water Pipe Hose Line 3.0 TDI 4G0121447AL

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 4G0121403G

Audi A6 C7 Expansion Overflow Coolant Reservoir Bottle Tank 4G0121403G

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 03G121065R

Audi A4 B7 2.0 TDI BRE Water Coolant Pipe Hose Line 03G121071A

€132.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 8K0121207A-4

Audi A4 B8 Diesel Engine Cooling Radiator Double Coolant Fan Motor 8K0121207A

€56.95

Free delivery: Nov 10 – 13

If paid before 14:00

Part no. 8K0122055B-1

Audi A4 B8 Water Return Coolant Pipe Hose Line 2.0 TDI Diesel Engine 8K0122055B

€37.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 06J133781BE

Audi TT 8J Water Hose Cooling Radiator Coolant Pipe Line 06J133781BE

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 8E0121058B

Audi RS4 B7 Water Coolant Cooling Pipe Hose Line 4.2 FSI Petrol 8E0121058B

€28.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 079121085Q

Audi S6 C7 S7 4G Water Coolant Pipe Hose 4.0 TFSI Petrol 079121085Q

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 032121142

Audi A3 8P A4 B7 VW Golf MK5 Passat B6 Coolant Temperature Sensor Clip 032121142

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 7L8121058C

Audi Q7 4L 4.2 TDI Water Coolant Pipe Hose Line 7L8121058C

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 420260712B

Audi R8 42 Air Conditioning A/C Pipe Hose Cooling Line Tube 420260712B

€37.95

Free delivery: Nov 10 – 13

If paid before 14:00

Part no. 5Q0959455AM-1

Audi S3 8V Radiator Fan Engine Motor Cooling 5Q0959455AM

€142.95

Free delivery: Nov 10 – 13

If paid before 14:00

Part no. 06D121111G

Audi A4 B7 Coolant Regulator Thermostat Housing Pipe 2.0 TFSI BWE 06D121111G

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 6R0122109L

Audi S1 8X VW Polo GTI Mk5 Water Coolant Pipe Hose Line 2.0 TFSI 6R0122109L

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 079115201C

Audi RS4 B8 RS5 8T Oil Cooler Line Thermostat 4.2 FSI 079115201C

€56.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 1K0122291H

Audi A3 8P VW Golf MK5 Caddy 2K Water Coolant Hose Pipe Line 2.0 TDi 1K0122291H

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 6R0121217

Audi A1 S1 8X GB VW Polo 6R Skoda Fabia 5J Radiator Cooling Fan Ring 6R0121217

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 8E0121251L

Audi A4 B6 B7 Coolant Radiator Rad Cooling Unit 1.9 TDi 8E0121251L

€32.95

Free delivery: Nov 10 – 13

If paid before 14:00

Part no. 059121008

Audi A6 C7 A7 4G SQ5 8R 3.0 TDI CGQB Coolant Water Pump Unit 059121008

€32.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 079131605BB

Audi S6 C7 S7 4G Secondary Air Pump Connecting Pipe Line Hose 079131605BB

€28.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 4G0121403AG

Audi A6 C7 A8 D4 Coolant Expansion Header Tank Reservoir 4G0121403AG

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 1K0122051FE

Audi TT 8J MK2 Water Hose Cooling Coolant Radiator Pipe Line 1K0122051FE

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 057121057

Audi Q7 4L 4.2 TDI Water Coolant Pipe Hose Line 057121057

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 8K0121207A-5

Audi A4 B8 Diesel Engine Cooling Radiator Double Coolant Fan Motor 8K0121207A

€28.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 1K0121251AB

Audi TT 8N Coolant Radiator Engine Cooling Unit Radiator Cooler 1K0121251AB

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 06A121065CQ

Audi A3 8P VW Golf Mk5 Coolant Hose Water Pipe Cooling 1.6 Petrol 06A121065CQ

€56.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 8K0819332M

Audi A4 B8 Water Coolant Pipe Hose Line Tube 2.0 TDI CNHC 8K0819332M

€37.95

Free delivery: Nov 12 – 13

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: Nov 12 – 13

If paid before 14:00

Part no. 03L906088BT

Audi A4 B8 Temperature Sensor Diesel Engine Exhaust Gas Sensor Probe 03L906088BT

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 5Q0122101DQ

VW Golf Mk7 Audi A3 8V Seat Leon Radiator Water Coolant Pipe Hose 5Q0122101DQ

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 8R0121283L

Audi A4 B8 A5 8T Q5 8R Radiator Air Guide Channel Left N/S 8R0121283L

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 8K0959455M

Audi A4 B8 Radiator Fan Engine Cooling Cooler Blower Unit 8K0959455M

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 8P0122051

Audi RSQ3 8U Cooling System Water Coolant Hose Pipe Line 2.5 TFSI 8P0122051

€70.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 8K0121405N

Audi A5 S5 8T Expansion Tank Header Coolant Reservoir Bottle 8K0121405N

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 06H121026AG

Audi A3 8P VW Passat B7 Water Pump Thermostat Coolant Regulator 06H121026AG

€51.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 045121011H

Volkswagen Golf Mk5 Audi A3 8P 1.9 TDI Diesel Engine Water Pump 03C121019D

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 8W0121674B

Audi A4 B9 Radiator Air Guide Duct Channel Cover Panel Right O/S 8W0121674B

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 06K121059K

Audi Q3 8U VW Beetle 5C Water Coolant Hose Pipe Line 06K121059K

€28.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 8T0941717D-1

Audi A4 RS4 B8 Headlight Lamp Drain Hose Pipe Line Tube Left N/S 8T0941717D

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 06K121132

Audi S3 8V Water Coolant Engine Cooling Flange Pipe Hose Line Petrol 06K121132

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 06E121044D

Audi S4 B8 Engine Coolant Pipe Water Hose Line 3.0 TFSI CAKA 06E121044D

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 06D121085

Audi A4 B7 2.0 TFSI BGB Turbo Water Coolant Hose Line Tube Pipe 06D121085

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 8K0145919C

Audi A4 B8 2.0 TDI CNHC Engine Water Coolant Hose Pipe Line 8K0145919C

€56.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 1J0121321B

Audi TT 8N Radiator Water Coolant Expansion Tank Cap Cover 1J0121321B

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 059122445F

Audi Q7 Q8 4M 3.0 TDI Engine Coolant Hose Line Tube Pipe 059122445F

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 8K0121051F

Audi A4 B8 A5 8T Radiator Water Coolant Pipe Hose Line Petrol 8K0121051F

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 06E121018A

Audi Q5 8R Auxiliary Water Pump Coolant Circulation Cooling Unit 06E121018A

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 059121064D-1

Audi A5 8T Water Hose Cooling Coolant Radiator Pipe Line 3.0 TDI 059121070J

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 6R0122073H

Audi A1 S1 8X VW Polo 6R Seat Ibiza 6P Engine Water Coolant Hose 6R0122073H

€51.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 6R0122101AQ

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

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 06M121085H

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

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 8K0121030K

Audi A4 B8 Water Hose Radiator Coolant Pipe Line 1.8 2.0 Petrol 8K0121030K

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

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