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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Volkswagen Golf R Mk7 Coolant Water Pipe Hose 2.0 TFSI 06K121085A

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 3AA122101F

Volkswagen Passat B7 Radiator Upper Coolant Hose Pipe 2.0 TDI 3AA122101F

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 1K0121064D

Audi A3 8P Seat Altea 5P Audi TT 8J Mk2 Cooling Coolant Pipe Hose 1K0121064D

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 1K0121049DJ-1

Volkswagen Touran 1T Water Coolant Hose Pipe Line 1.4 TSI 1K0121049DJ

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 5N0121051J

Water Hoses Volkswagen Tiguan 5N 1.6 TDI Radiator Coolant Pipe Line 5N0121051J

€28.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 1K0121447BG

Volkswagen Golf Mk5 2.0 FSI Petrol Water Coolant Pipe Hose 1K0121447BG

€32.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 7H0815801

Volkswagen Transporter T5 Water Coolant Pipe Hose 2.5 TDI 7H0815801

€28.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 7P6121396

Volkswagen Touareg 7P Mk2 Air Intake Duct Guide Channel Right O/S 7P6121396

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 03C121121C

VW Polo 6R 1.2 CGPB Water Pump Thermostat Cover Housing 03C121121C

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 2K0122157AH

Volkswagen Caddy C20 2K Maxi 2K Engine Coolant Hose Tube Line Pipe 2K0122157AH

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 7C0121487E

VW Volkswagen Crafter SY Water Hose Cooling Coolant Pipe Line 2.0 TDI 7C0121487E

€23.95

Free delivery: Nov 12 – 13

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: Nov 12 – 13

If paid before 14:00

Part no. 05E121497A

Volkswagen Golf CD1 Coolant Pipe Turbocharger Flow Line Hose Pipe 05E121497A

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 03C121111B

Volkswagen Polo Mk5 6R Water Coolant Thermostat Housing 03C121111B

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 06A103217G

VW Golf Mk5 Audi A3 8P Engine Breather Line Cylinder Head Hose 06A103217G

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 7H0819320A

Volkswagen Transporter T5 Cooling Water Hose Coolant Pipe 2.5 TDI 7H0819320A

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 5Q0121049CL-2

Volkswagen Golf Mk7 Audi A3 8V Water Hose Coolant Radiator Pipe Line 5Q0121049CL

€51.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 6X0959455F

Volkswagen VW Golf Mk4 A3 8L TT 8N Radiator Cooling Fan Motor Petrol 6X0959455F

€37.95

Free delivery: Nov 10 – 13

If paid before 14:00

Part no. 2H6145708A

Volkswagen Amarok 2H Intercooler Pressure Pipe Hose Line 3.0 TDI V6 2H6145708A

€70.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 5K0121064J-1

VW Caddy 2k Passat A3 Water Coolant Pipe Hose Tube Line 2.0 TDI 5K0121064J

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 038121132C

Volkswagen Transporter T5 Engine Coolant Flange Hose 1.9 TDI 038121132C

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 5Q0965561B-1

Volkswagen Golf Mk7 Audi A3 8V Auxiliary Water Pump 2.0 TDI TFSI 5Q0965561B

€23.95

Free delivery: Nov 12 – 13

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: Nov 12 – 13

If paid before 14:00

Part no. 5Q0121063Q

Volkswagen Golf CD1 Water Pipe Hose Coolant Cooling Line 5Q0121063Q

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 03C103493AG

VW Volkswagen Golf Mk6 Audi A3 8P Coolant Pipe Hose Genuine 03C103493AG

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 038121121D

Volkswagen Transporter T5 Coolant Thermostat Housing Pipe 1.9 TDI 038121121D

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 03H121058B

Volkswagen Passat CC Engine Coolant Hose Water Pipe Line 03H121058B

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 2K5122157D

Volkswagen Caddy 2K Engine Cooling Coolant Water Pipe 2.0 TDI 2K5122157D

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 7P0121203K

Volkswagen Touareg 7P Radiator Fan Cowling Mount Housing Surround 7P0121203K

€189.95

Free delivery: Nov 10 – 13

If paid before 14:00

Part no. 7H0122058C

Volkswagen Transporter Camper T5 Coolant Water Hose Pipe Line 7H0122058C

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 5N0122447AE

Volkswagen Tiguan 5N Mk1 Water Coolant Pipe 2.0 TDI 5N0122447AE

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 1K0122101KN-4

VW Caddy Mk2 Golf Mk6 Radiator Water Coolant Hose Pipe Line Diesel 1K0122101KN

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 05E121070

VW Volkswagen Golf 8 1.5 eTSI DFYA Water Coolant Pipe Hose Line Tube 05E121070

€32.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 038121031F

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

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 5Q0122291CT

Volkswagen Golf Mk7 R Engine Water Radiator Pipe 2.0 TSI 5Q0122291CT

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 1K0121283F

Volkswagen Golf Gti 1k Radiator Air Duct Deflector Guide Left N/S 1K0121283F

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 7E0121407D

VW Transporter T6 Coolant Liquid Overflow Tank Reservoir 2.0 Diesel 7E0121407D

€28.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 5N0971349BQ

Volkswagen Sharan 7N Alternator Generator Wiring Harness Cable 5N0971349BQ

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 03F121065A

Volkswagen VW Polo 6R Engine Water Coolant Pipe Hose 1.2 TSI 03F121065A

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 1K0121101CP

Volkswagen Golf 1K 1.6 TDI Water Hose Cooling Coolant Pipe Line 1K0121101CP

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 2E0122101F-1

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

€28.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 06D121521C

Volkswagen Golf Gti 1K Engine Oil Cooler Bracket Mount Holder Support 06D121521C

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 04E121070AJ

Volkswagen Golf Sportsvan 1.5 TSI Water Coolant Pipe Hose Line 04E121070AJ

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 1K0121284F

Volkswagen Golf Gti 1k Radiator Air Duct Deflector Guide Right O/S 1K0121284F

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 5Q0121447G

Audi A3 8V VW Golf Mk7 Engine Coolant Pipe Water Hose Line 5Q012144

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 3AA122101E

Volkswagen Passat CC Engine Water Coolant Pipe Hose Tube Line 2.0 TDI 3AA122101E

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 03L906088HC

VW Crafter 35 Temperature Sensor Exhaust Gas Sensor Probe 2.0 TDI 03L906088HC

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 03G121065H

Volkswagen Golf MK5 Audi A3 8P Seat Skoda Diesel Engine Coolant Pipe 503G121065H

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 1K0121101CP-1

Volkswagen Golf Mk6 1.6 TDI Water Hose Cooling Coolant Pipe Line 1K0121101CP

€23.95

Free delivery: Nov 12 – 13

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: Nov 12 – 13

If paid before 14:00

Part no. 5Q0907543A

Volkswagen VW Golf Mk8 Interior Temperature Sensor Unit 5Q0907543A

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 7H0121407C

VW Transporter T5 Coolant Cooling Water Expansion Tank Bottle 7H0121407C

€23.95

Free delivery: Nov 12 – 13

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: Nov 12 – 13

If paid before 14:00

Part no. 7H0121051G

VW Transporter T5 1.9 TDI Coolant Radiator Bottom Hose Pipe Line 7H0121051G

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 04L121101

Volkswagen Passat B8 Coolant Water Hose Pipe 2.0 TDI 04L121101

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 6R0122109G

Coolant Hose VW Polo 6R Seat Ibiza 6J 1.2 TSI Petrol CBZB Water Line 6R0122109G

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 1J0122051H

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

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 5N0122101BB

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

€23.95

Free delivery: Nov 12 – 13

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: Nov 12 – 13

If paid before 14:00

Part no. 7N0820721

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

€28.95

Free delivery: Nov 12 – 13

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: Nov 12 – 13

If paid before 14:00

Part no. 03L201360G

Volkswagen Tiguan 5N Fuel Injection Line Pressure Pipe Rail Injector 03L201360G

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 03C121050G

Audi A3 8P Volkswagen Golf Mk 7 Heater Water Cooling Pipe Hose Line 03C121050G

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 3C0121087A

Volkswagen Passat B7 Radiator Coolant Hose Pipe 2.0 TDI 3C0121087A

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 6R0122101DD-1

Coolant Hose VW Polo 6R Seat Ibiza 6J 1.2 TSI CBZB Radiator Line 6R0122101DD

€28.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 6Y0122073B

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

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 7P0819926B

VW Volkswagen Touareg 7P 3.0 TDI Coolant Water Pipe Hose Line 7P0819926B

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 1K0907543G

Volkswagen Tiguan 5N Temparature Sensor Interior Temperature Sensor 1K0907543G

€23.95

Free delivery: Nov 12 – 13

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: Nov 12 – 13

If paid before 14:00

Part no. 3Q0121156D

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

€89.95

Free delivery: Nov 12 – 13

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: Nov 12 – 13

If paid before 14:00

Part no. 03D121026F

VW Volkswagen Fox 5Z 1.2 CHFB Petrol Water Pipe Thermostat Housing 03D121026F

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 1K0820897A

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

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 1K0122447GF

Volkswagen Passat B7 Coolant Pipe Hose Line 2.0 TDI 1K0122447GF

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 1J0121156AT

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

€28.95

Free delivery: Nov 12 – 13

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: Nov 12 – 13

If paid before 14:00

Part no. 7L0815857C

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

€23.95

Free delivery: Nov 12 – 13

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: Nov 12 – 13

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: Nov 12 – 13

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: Nov 12 – 13

If paid before 14:00

Part no. 7C0121096

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

€32.95

Free delivery: Nov 12 – 13

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: Nov 12 – 13

If paid before 14:00

Part no. 5WA121109F

Volkswagen Golf CD1 Engine Water Coolant Pipe Hose 5WA121109F

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 03D103211C

VW Volkswagen Fox 5Z 1.2 CHFB Engine Coolant Radiator Pipe Vent 03D103211C

€23.95

Free delivery: Nov 12 – 13

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: Nov 12 – 13

If paid before 14:00

Part no. 1K0121086AH

Audi A3 8P VW Golf 5 Seat Leon 1P1 Coolant Hose Pipe Diesel 2.0 TDI 1K0121086AH

€28.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 04L121111-1

Volkswagen Tiguan 5N Thermostat Coolant Housing Valve 2.0 TDI Diesel 04L121111

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 7C0121445

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

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. A9068322123

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

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 5G0965567-2

VW Golf Mk7 Passat B8 Audi A1 8X Auxiliary Water Coolant Pump 2.0 TDI 5G0965567

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 03H131561B

Volkswagen Passat CC Skoda Superb Coolant Hose Pipe Line 03H131561B

€70.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 038121132G

Audi Seat Skoda VW Golf MKV Coolant Flange Thermostat Housing Flange 038121132G

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 2E0122101F

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

€28.95

Free delivery: Nov 12 – 13

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: Nov 12 – 13

If paid before 14:00

Part no. 04L121111A

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

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 8K0121081BF

Audi A4 S4 B8 A5 8T 8F Radiator Coolant Hose Pipe Line 8K0121081BF

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 3C0122096G

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

€61.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 6R0122101G

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

€51.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 2E0121096A

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

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

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