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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VW Volkswagen Mk5 V Mk6 VI 2.0 Petrol Water Coolant Pipe Hose Line 1K0122063D

€23.95

Free delivery: Sep 17 – 22

If paid before 14:00

Part no. 05C133352AF

VW Volkswagen Golf 8 CD1 1.0 TSI DLAA Oil Breather Pipe 05C133352AF

€23.95

Free delivery: Sep 17 – 22

If paid before 14:00

Part no. 5Q0121205

Volkswagen Golf 5G Radiator Fan Engine Cooling Cooler Blower Unit 5Q0121205

€32.95

Free delivery: Sep 17 – 22

If paid before 14:00

Part no. 06A121132R

VW Volkswagen New Beetle 1.6 BFS Water Coolant Flange 06A121133AC

€23.95

Free delivery: Sep 17 – 22

If paid before 14:00

Part no. 5K0122051N

Volkswagen Beetle Scirocco III 2.0 TDI Water Radiator Pipe Hose Line 5K0122051N

€28.95

Free delivery: Sep 17 – 22

If paid before 14:00

Part no. 7H0121407C

VW Transporter T5 Coolant Cooling Water Expansion Tank Bottle 7H0121407C

€23.95

Free delivery: Sep 17 – 22

If paid before 14:00

Part no. 5WA121407F

Volkswagen Golf VI Coolant Expansion Tank Reservoir Bottle Fluid Tank 5WA121407F

€23.95

Free delivery: Sep 17 – 22

If paid before 14:00

Part no. 1K0122109-1

VW Scirocco Mk3 Audi A3 8P Water Coolant Hose Pipe Line 2.0 TFSI 1K0122109CM

€23.95

Free delivery: Sep 17 – 22

If paid before 14:00

Part no. 1K0122157AN

VW Golf Mk5 V Mk6 VI Petrol Engine Water Coolant Pipe Hose Line 1K0122157AN

€23.95

Free delivery: Sep 17 – 22

If paid before 14:00

Part no. 04L121101

Volkswagen Passat B8 Coolant Water Hose Pipe 2.0 TDI 04L121101

€23.95

Free delivery: Sep 17 – 22

If paid before 14:00

Part no. 06F122101A

VW Volkswagen Golf Mk6 VI Coolant Water Pipe Hose Line 06F122101A

€23.95

Free delivery: Sep 17 – 22

If paid before 14:00

Part no. 1J0122051H

VW Volkswagen Golf Mk3 Radiator Coolant Hose Pipe Line Tube 1J0122051H

€23.95

Free delivery: Sep 17 – 22

If paid before 14:00

Part no. 5N0122101BB

VW Volkswagen Tiguan Mk1 2.0 TDI Water Coolant Pipe Hose 5N0122101BB

€23.95

Free delivery: Sep 17 – 22

If paid before 14:00

Part no. 7E0121101B-1

Volkswagen Transporter T5 Coolant Hoses Water Cooling Pipe 2.0 TDI 7E0121101B

€23.95

Free delivery: Sep 17 – 22

If paid before 14:00

Part no. 1K0122051HK

VW Volkswagen Golf 5 6 1.6 2.0 TDI Water Hose Coolant Pipe Line 1K0122051HK

€23.95

Free delivery: Sep 17 – 22

If paid before 14:00

Part no. 1K0121070CE

VW Volkswagen Golf 5 6 1.6 2.0 TDI Water Hose Coolant Pipe Line 1K0121070CE

€23.95

Free delivery: Sep 17 – 22

If paid before 14:00

Part no. 04L121131AB-1

VW Tiguan 5N Coolant Water Flange Housing Connector 2.0 TDI 04L121131AB

€23.95

Free delivery: Sep 17 – 22

If paid before 14:00

Part no. 7N0820721

Volkswagen Sharan 7N A/C Air Con Refrigerant Hose Pipe Line 7N0820721

€28.95

Free delivery: Sep 17 – 22

If paid before 14:00

Part no. 03L121131F

VW Volkswagen Golf 6 VI 1.6 TDI Thermostat Valve Thermostat Housing 03L121131F

€23.95

Free delivery: Sep 17 – 22

If paid before 14:00

Part no. 6Y0122157B

VW Volkswagen Polo 9N Coolant Hose Tube Line Pipe 1.2 Petrol BMM 6Y0122157B

€23.95

Free delivery: Sep 17 – 22

If paid before 14:00

Part no. 1K0122101JR

VW Golf 6 Audi A3 8P 1.6 TDI Water Hose Radiator Coolant Pipe Line 1K0122101JR

€23.95

Free delivery: Sep 17 – 22

If paid before 14:00

Part no. 03L121111R

Volkswagen Golf Caddy 1.6 TDI CAY Water Coolant Thermostat Housing 03L121111R

€28.95

Free delivery: Sep 17 – 22

If paid before 14:00

Part no. 1K0121070CA

VW Volkswagen Touran 1T 1.4 TSI CAVC Water Coolant Pipe Hose Line 1K0121070CA

€23.95

Free delivery: Sep 17 – 22

If paid before 14:00

Part no. 6Y0122073B

Volkswagen Polo 9N Mk4 Coolant Return Hose Pipe 1.2 Petrol 6Y0122073B

€23.95

Free delivery: Sep 17 – 22

If paid before 14:00

Part no. 044121113

Volkswagen Polo Mk4 Coolant Thermostat 044121113

€23.95

Free delivery: Sep 17 – 22

If paid before 14:00

Part no. 6Y0121049H

Volkswagen Polo 9N Engine Coolant Hose Tube Line Pipe 1.2 Petrol BMM 6Y0121049H

€23.95

Free delivery: Sep 17 – 22

If paid before 14:00

Part no. 03C121111B

Volkswagen Polo Mk5 6R Water Coolant Thermostat Housing 03C121111B

€23.95

Free delivery: Sep 17 – 22

If paid before 14:00

Part no. 1K0121070BB

Volkswagen Touran 1T Water Coolant Pipe Hose Line Tube 1.4 TSI 1K0121070BB

€23.95

Free delivery: Sep 17 – 22

If paid before 14:00

Part no. 5Q0122051BA

Volkswagen Golf Gtd 5G Audi A3 8V Water Coolant Pipe Hose Tube Line 5Q0122051BA

€23.95

Free delivery: Sep 17 – 22

If paid before 14:00

Part no. 059115389H

VW Touareg 7L Audi Q7 4L 3.0 TDI Oil Filter Housing Oil Cooler 059115389P

€89.95

Free delivery: Sep 17 – 22

If paid before 14:00

Part no. 038121031F

Mechanical Water Pump Volkswagen Golf V Diesel Engine Coolant Unit 038121031F

€23.95

Free delivery: Sep 17 – 22

If paid before 14:00

Part no. 1K0820897A

VW Volkswagen Scirocco Mk3 Heat Shield Air Con Condenser Radiator 1K0820897A

€23.95

Free delivery: Sep 17 – 22

If paid before 14:00

Part no. 3Q0121156D

Volkswagen Caddy SB Engine Cooling System Hose Pipe 2.0 TDI 3Q0121156D

€89.95

Free delivery: Sep 17 – 22

If paid before 14:00

Part no. 7P6122051D

Volkswagen VW Touareg 7P Coolant Hose Pipes Line 3.0 TDI Diesel 7P6122051D

€56.95

Free delivery: Sep 17 – 22

If paid before 14:00

Part no. 7L0815857C

VW Volkswagen Touareg 7L Water Heater Coolant Pipe Hose Line 7L0815857C

€23.95

Free delivery: Sep 17 – 22

If paid before 14:00

Part no. 6Y0121086F

Volkswagen Polo 9N Engine Coolant Hose Pipe Tube Line 1.2 Petrol BMM 6Y0121086F

€23.95

Free delivery: Sep 17 – 22

If paid before 14:00

Part no. 1K0122447GF

Volkswagen Passat B7 Coolant Pipe Hose Line 2.0 TDI 1K0122447GF

€23.95

Free delivery: Sep 17 – 22

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Part no. 1J0121156AT

Volkswagen Golf Mk4 Audi A3 TT Heater Matrix Coolant Pipe Hose Line 1J0121156AT

€28.95

Free delivery: Sep 17 – 22

If paid before 14:00

Part no. 7P0121065M-1

Volkswagen Touareg 7P Oil Cooler Cooling Tube Pipe Hose Line 3.0 TDI 7P0121065M

€23.95

Free delivery: Sep 17 – 22

If paid before 14:00

Part no. 5N0121086J

Volkswagen Tiguan 5N Audi Q3 8U Coolant Hose Pipe Line 2.0 TDI 5N0121086J

€23.95

Free delivery: Sep 17 – 22

If paid before 14:00

Part no. 1K0121058D

VW Volkswagen EOS 1F Golf Gti 1K Coolant Hose Tube Line Pipe 2.0 TDI 1K0121058D

€23.95

Free delivery: Sep 17 – 22

If paid before 14:00

Part no. 5Q0122051CM

Volkswagen Golf 5G 2.0 TDI Water Hose Radiator Coolant Pipe Line 5Q0122051CM

€61.95

Free delivery: Sep 17 – 22

If paid before 14:00

Part no. 5Q0122101BJ

Volkswagen Golf Gtd 5G Audi A3 8V Water Coolant Pipe Hose 2.0 TDI 5Q0122101BJ

€23.95

Free delivery: Sep 17 – 22

If paid before 14:00

Part no. 7C0121096

Volkswagen Crafter SY Engine Water Coolant Hose Pipe Line Hose Tube 7C0121096

€32.95

Free delivery: Sep 17 – 22

If paid before 14:00

Part no. 06F121492B

Volkswagen Golf GtI 1K Audi A3 8P Engine Coolant Hose Tube Line Pipe 06F121492B

€184.95

Free delivery: Sep 17 – 22

If paid before 14:00

Part no. 03E121065A

VW Volkswagen Polo 6R Solid Water Coolant Pipe Hose Line Tube 03E121065A

€23.95

Free delivery: Sep 17 – 22

If paid before 14:00

Part no. 6C0121407-1

Audi A1 8X VW Polo Mk5 Expansion Tank Water Coolant Bottle Reservoir 6C0121407

€23.95

Free delivery: Sep 17 – 22

If paid before 14:00

Part no. 7N0965561

Volkswagen Sharan 7N Auxiliary Water Pump 7N0965561

€23.95

Free delivery: Sep 17 – 22

If paid before 14:00

Part no. 5K0121070C

Volkswagen Golf Mk6 Water Hose Cooling Coolant Radiator Pipe Line 5K0121070C

€23.95

Free delivery: Sep 17 – 22

If paid before 14:00

Part no. 03L121131K

VW Transporter T5 2.0 TDI CAAA Sealing Flange Temperature Sender 03L121131K

€28.95

Free delivery: Sep 17 – 22

If paid before 14:00

Part no. 03C121019J

Volkswagen Golf Mk6 Audi A1 8X 1.4 Petrol Engine Water Pump 03C121019J

€23.95

Free delivery: Sep 17 – 22

If paid before 14:00

Part no. 1K0965561J

Volkswagen Golf MK6 Auxiliary Water Pump Coolant Unit Cooling 1K0965561J

€23.95

Free delivery: Sep 17 – 22

If paid before 14:00

Part no. 5Q0122051AT

Volkswagen Golf 5G Water Hose Radiator Coolant Pipe Line 5Q0122051AT

€23.95

Free delivery: Sep 17 – 22

If paid before 14:00

Part no. 1K0122447EQ

VW Volkswagen Golf VI Mk6 2.0 TDi Coolant Water Hose Line Tube Pipe 1K0122447EQ

€23.95

Free delivery: Sep 17 – 22

If paid before 14:00

Part no. 7C0121130C

VW Volkswagen Crafter Sy 2.0 TDi Engine Coolant Pipe Hose Tube Line 7C0121130C

€42.95

Free delivery: Sep 17 – 22

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Part no. 2E0121447C

VW Crafter 2E 35 Mercedes Sprinter W906 Coolant Hose Pipe Line 2E0121447C

€23.95

Free delivery: Sep 17 – 22

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Part no. 7C0121445

VW Volkswagen Crafter Sy Coolant Hose Pipe Tube Line 2.0 Diesel 7C0121445

€23.95

Free delivery: Sep 17 – 22

If paid before 14:00

Part no. 04L121064G

Volkswagen VW Golf Mk7 5G Water Hoses Radiator Coolant Pipes Lines 04L121064G

€28.95

Free delivery: Sep 17 – 22

If paid before 14:00

Part no. 06F121058D

VW Volkswagen Golf Mk6 VI 2.0 TDi Water Coolant Hose Pipe Line 06F121058D

€23.95

Free delivery: Sep 17 – 22

If paid before 14:00

Part no. A9068322123

Volkswagen Crafter 2E Mercedes Sprinter W906 Coolant Pipe Hose Line A9068322123

€23.95

Free delivery: Sep 17 – 22

If paid before 14:00

Part no. 03C121065B

Water Hose Volkswagen Golf 6 Audi A1 A3 8P Petrol Coolant Pipe 03C121065B

€23.95

Free delivery: Sep 17 – 22

If paid before 14:00

Part no. 5Q0122291K

VW Volkswagen Golf 5G 2.0 TFSI CHHA Coolant Flange 5Q0122291K

€32.95

Free delivery: Sep 17 – 22

If paid before 14:00

Part no. 5Q0121063Q

Volkswagen Golf CD1 Water Pipe Hose Coolant Cooling Line 5Q0121063Q

€23.95

Free delivery: Sep 17 – 22

If paid before 14:00

Part no. 6R0122157AR

VW Volkswagen Polo Gti 6c Coolant Hose Tube Line Pipe Quick Release 6R0122157AR

€23.95

Free delivery: Sep 17 – 22

If paid before 14:00

Part no. 2E0122101F

VW Crafter 2E Mercedes Sprinter W906 Coolant Hose Pipe Line 2E0122101F

€28.95

Free delivery: Sep 17 – 22

If paid before 14:00

Part no. 04L121111A

Volkswagen Audi Seat Skoda Coolant Thermostat Housing Pipe 2.0 TDI 04L121111A

€23.95

Free delivery: Sep 17 – 22

If paid before 14:00

Part no. 3C0122096G

Volkswagen Passat CC Water Coolant Pipe Hose Line 3.6 FSI 3C0122096G

€61.95

Free delivery: Sep 17 – 22

If paid before 14:00

Part no. 2E0122096J

Volkswagen Crafter 2E Mercedes Sprinter W906 Water Pipe Hose Line 2E0122096J

€28.95

Free delivery: Sep 17 – 22

If paid before 14:00

Part no. 6R0122101G

Volkswagen Polo GTI 6R Engine Water Coolant Hoses Pipes 1.4 TSI CAVE 6R0122101G

€66.95

Free delivery: Sep 17 – 22

If paid before 14:00

Part no. 05E145140N

VW Volkswagen Golf 8 1.5 eTSI DFYA Turbo Oil Pipe Feed Hose 05E145140N

€23.95

Free delivery: Sep 17 – 22

If paid before 14:00

Part no. 2E0121096A

Volkswagen Crafter 2E Mercedes Sprinter W906 Water Coolant Pipe Hose 2E0121096A

€23.95

Free delivery: Sep 17 – 22

If paid before 14:00

Part no. 5Q0121049R

VW Golf 5G Mk7 Audi A3 8V Water Pipe Hose Line Coolant 1.2 TSI 5Q0121049R

€51.95

Free delivery: Sep 17 – 22

If paid before 14:00

Part no. 3C0122157DR

Volkswagen Passat CC Water Coolant Hose Pipe 3C0122157DR

€23.95

Free delivery: Sep 17 – 22

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Part no. 03L121049G

Volkswagen VW Crafter 2E Engine Water Coolant Pipe 2.0 TDI Diesel 03L121049G

€23.95

Free delivery: Sep 17 – 22

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Part no. 5WA121109D

Volkswagen Polo Mk6 AW Water Reservoir Coolant Pipe Hose Line 5WA121109D

€23.95

Free delivery: Sep 17 – 22

If paid before 14:00

Part no. 7H0121447D

Volkswagen Transporter T5 Coolant Radiator Hose Pipe Line 2.5 TDI 7H0121447D

€28.95

Free delivery: Sep 17 – 22

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Part no. 3C0122073EJ

Volkswagen Passat CC Skoda Superb Water Coolant Hose Pipe 3C0122073EJ

€23.95

Free delivery: Sep 17 – 22

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Part no. 6R0121063A

VW Volkswagen Polo 6R 5 Water Hose Radiator Coolant Cooling Pipe Line 6R0121063A

€23.95

Free delivery: Sep 17 – 22

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Part no. 7C0121082B

Volkswagen VW Crafter SY Engine Coolant Hose Line Radiator Pipe 7C0121082B

€23.95

Free delivery: Sep 17 – 22

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Part no. 6Q0121407B

VW Volkswagen Polo 6R Coolant Reservoir Expansion Tank Fluid Bottle 6Q0121407B

€23.95

Free delivery: Sep 17 – 22

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Part no. A9065010103

Volkswagen VW Crafter Coolant Expansion Tank Balancing Tank A9065010103

€42.95

Free delivery: Sep 17 – 22

If paid before 14:00

Part no. 1K0121251L

Volkswagen VW Golf VI Petrol Radiator Engine Cooling Coolant Unit 1K0121251L

€32.95

Free delivery: Sep 17 – 22

If paid before 14:00

Part no. 03L122157R

Volkswagen Golf Mk6 Caddy 1.6 TDI Diesel Water Coolant Pipe Hose 03L122157R

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Part no. 1K0121070BJ

Volkswagen Golf Mk6 Water Coolant Pipe Hose Line Tube 1K0121070BJ

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Volkswagen VW Touran 1T Water Pump Coolant Unit 1.4 TSI Petrol 03C121004J

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Volkswagen Touareg 7L Water Flange For Cooling System 3.2 V6 Petrol 022121085A

Product currently unavailable

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Volkswagen Touareg 2.5 TDI Water Hose Radiator Coolant Tube Pipe Line 7L6122051H

Product currently unavailable

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VW Volkswagen Touareg 7L Water Pipe Hose Coolant Cooling Line 7L6122447BB

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Volkswagen Tiguan 5N Auxiliary Water Pump Coolant Circulation Bracket 5N0965561A

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Volkswagen New Beetle 1C 9C Radiator Fan Shroud Housing 1C0121207C

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VW Volkswagen Transporter T6 Auxiliary Water Pump Unit 2.0 Diesel 7LA965567B

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Volkswagen Golf 1K Water Hose Cooling Coolant Radiator Pipe Line 1K0122101KP

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VW Volkswagen Golf 8 Additional Auxiliary Water Pump 1.0 TSI DLAA 5Q0965567N

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Volkswagen Touareg 7L Expansion Tank Header Coolant Reservoir Bottle 7L0121407E

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Volkswagen LT 35 Coolant Expansion Tank Coolant Overflow Reservoir 2D0121403K

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VW Volkswagen Amarok NF Coolant Hose Line Tube Pipe MB3G-18D476-FF

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VW Volkswagen New Beetle 1.9 TDI BSW Diesel Water Coolant Pipe Hose 038121065BG

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VW Seat Skoda1.2 TDI CFWA Coolant Pipe Return Radiator Expansion Tank 6R0121070M

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Volkswagen Golf Mk6 Audi A3 8P Hose Thermostat Coolant Pipe 2.0 TDI 03L121065H

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