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 5G Radiator Fan Engine Cooling Blower 5Q0121205S 5Q0121203CN

€113.95

Free delivery: Aug 5 – 10

If paid before 14:00

Part no. 06H121010L

Audi A4 B8 A5 8T VW Scirocco Mk3 Engine Water Pump 2.0 TFSI Petrol 06H121010L

€142.95

Free delivery: Aug 5 – 10

If paid before 14:00

Part no. 1K0965561J-1

VW Golf MK6 Audi A3 8P Auxiliary Water Pump Coolant Unit Cooling 1K0965561J

€23.95

Free delivery: Aug 5 – 10

If paid before 14:00

Part no. 7LA121086D

Volkswagen Transporter T6 Water Coolant Pipe Hose Line 2.0 TDI 7LA121086D

€42.95

Free delivery: Aug 5 – 10

If paid before 14:00

Part no. 03L121011J-1

Volkswagen Transporter T5 2.0 TDi Engine CAAA Water Pump 03L121011J

€28.95

Free delivery: Aug 5 – 10

If paid before 14:00

Part no. 5QF122157AJ

Audi Q3 F3 Engine Coolant Hose Line Tube 2.0 TDI 5QF122157AJ

€23.95

Free delivery: Aug 5 – 10

If paid before 14:00

Part no. 06Q121085B

VW Golf Mk8 Skoda Octavia Mk4 Audi S3 8Y 2.0 TSI Water Coolant Hose 06Q121085B

€32.95

Free delivery: Aug 5 – 10

If paid before 14:00

Part no. 7LA121096S

VW Volkswagen Transporter T6 Water Coolant Hose Pipe Line 2.0 TDI 7LA121096S

€42.95

Free delivery: Aug 5 – 10

If paid before 14:00

Part no. 06J121075B

Audi A3 8P VW Scirocco Mk3 Coolant Hose Water Pipe Line Tube Petrol 06J121075B

€32.95

Free delivery: Aug 5 – 10

If paid before 14:00

Part no. 5N0121065-1

Volkswagen Tiguan 5N Water Pipe Hose Coolant Cooling Line 5N0121065

€23.95

Free delivery: Aug 5 – 10

If paid before 14:00

Part no. 3Q0122051CC

Volkswagen Caddy SB Engine Coolant Radiator Coolant Pipe Hose Line 3Q0122051CC

€37.95

Free delivery: Aug 5 – 10

If paid before 14:00

Part no. 6X0959455C

VW Volkswagen New Beetle Fan Blower Radiator Cooling 250/60W 345mm 6X0959455C

€42.95

Free delivery: Aug 5 – 10

If paid before 14:00

Part no. 1K0122063K-1

Seat Leon Volkswagen Golf 6 Audi A1 8X Water Coolant Pipe Hose Line 1K0122063K

€23.95

Free delivery: Aug 5 – 10

If paid before 14:00

Part no. 7E0122051E-2

VW Volkswagen Transporter T5 Radiator Coolant Hose Water Pipe Line 7E0122051E

€23.95

Free delivery: Aug 5 – 10

If paid before 14:00

Part no. 06F121133H

Volkswagen Golf Mk5 Audi TT 8J Water Thermostat Housing 2.0 TFSI 06F121133H

€28.95

Free delivery: Aug 5 – 10

If paid before 14:00

Part no. 1K0121051T

Volkswagen Eos Audi A3 8P Coolant Water Pipe Hose Line Tube 1K0122051AP

€23.95

Free delivery: Aug 5 – 10

If paid before 14:00

Part no. 03L121065AJ

Volkswagen Goif Caddy 1.6 TDI Diesel Water Coolant Pipe Hose Line 03L121065AJ

€23.95

Free delivery: Aug 5 – 10

If paid before 14:00

Part no. 2E0121096

VW Volkswagen Crafter 2E 2.0 Diesel Water Coolant Pipe Line Tube Hose 2E0121096

€23.95

Free delivery: Aug 5 – 10

If paid before 14:00

Part no. 7N0122073T

Volkswagen VW Tiguan 5N Water Hose Coolant Cooling Tube Pipe Line 7N0122073T

€23.95

Free delivery: Aug 5 – 10

If paid before 14:00

Part no. 7LA965567B

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

€56.95

Free delivery: Aug 5 – 10

If paid before 14:00

Part no. 7N0121064L

VW Volkswagen Sharan 7N Breather Pipe Hose Line 2.0 TDI 7N0121064L

€32.95

Free delivery: Aug 5 – 10

If paid before 14:00

Part no. 03L115310

Volkswagen Crafter Oil Filler Pipe Hose Line 03L115310

€23.95

Free delivery: Aug 5 – 10

If paid before 14:00

Part no. 1K0122101KP

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

€28.95

Free delivery: Aug 5 – 10

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: Aug 5 – 10

If paid before 14:00

Part no. 03L121111AB

Volkswagen Crafter Water Thermostat Cooling Hoses Pipe 03L121111AB

€23.95

Free delivery: Aug 5 – 10

If paid before 14:00

Part no. 7L6121109D

VW Volkswagen Touareg 7L Water Pipe Hose Coolant Cooling Line 7L6121109D

€32.95

Free delivery: Aug 5 – 10

If paid before 14:00

Part no. 03L121301

Volkswagen VW Crafter Radiator Cooling Fan Shroud 03L121301

€94.95

Free delivery: Aug 5 – 10

If paid before 14:00

Part no. 1K0121051AH

Volkswagen VW Golf Mk5 Water Hose Radiator Coolant Pipe Line 1K0121051AH

€23.95

Free delivery: Aug 5 – 10

If paid before 14:00

Part no. 06K121085A

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

€23.95

Free delivery: Aug 5 – 10

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: Aug 5 – 10

If paid before 14:00

Part no. 3AA122101F

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

€23.95

Free delivery: Aug 5 – 10

If paid before 14:00

Part no. 7H0815801

Volkswagen Transporter T5 Water Coolant Pipe Hose 2.5 TDI 7H0815801

€28.95

Free delivery: Aug 5 – 10

If paid before 14:00

Part no. 5WA121109F

Volkswagen Golf CD1 Engine Water Coolant Pipe Hose 5WA121109F

€23.95

Free delivery: Aug 5 – 10

If paid before 14:00

Part no. 1K0121070BR

Volkswagen VW Golf Mk5 Water Hose Radiator Coolant Pipe Line 1K0121070BR

€23.95

Free delivery: Aug 5 – 10

If paid before 14:00

Part no. 7H0422371A-1

Volkswagen Transporter T5 Power Steering Fluid Expansion Tank 7H0422371A

€23.95

Free delivery: Aug 5 – 10

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: Aug 5 – 10

If paid before 14:00

Part no. 2K0122101C

Volkswagen Caddy 2K Radiator Coolant Water Pipe Hose 2K0122101C

€23.95

Free delivery: Aug 5 – 10

If paid before 14:00

Part no. 7H0819320A

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

€23.95

Free delivery: Aug 5 – 10

If paid before 14:00

Part no. 7L6121253C

Volkswagen VW Touareg 7L Radiator Engine Cooling Coolant Unit 7L6121253C

€56.95

Free delivery: Aug 5 – 10

If paid before 14:00

Part no. 5Q0122157AK-1

Volkswagen Golf Mk7 2.0 TFSI CHHA Water Hose Radiator Coolant Pipe 5Q0122157AK

€23.95

Free delivery: Aug 5 – 10

If paid before 14:00

Part no. 03L121011J

Volkswagen Transporter T5 2.0 TDi Engine CAAA Water Pump 03L121011J

€37.95

Free delivery: Aug 5 – 10

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: Aug 5 – 10

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: Aug 5 – 10

If paid before 14:00

Part no. 6R0959455C

Radiator Fan VW Polo 6R Seat Ibiza 4 Engine CGPB 1.2 Blades Fan Motor 6R0959455C

€23.95

Free delivery: Aug 5 – 10

If paid before 14:00

Part no. 03L121121A

VW Volkswagen Touran 1T1 Passat 2.0 TDI BKD BMP Coolant Flange Pipe 03L121121A

€23.95

Free delivery: Aug 5 – 10

If paid before 14:00

Part no. 1K0121156DG

Volkswagen VW Golf Mk6 Water Hose Coolant Pipe Line 1.4 TSI 1K0121156DG

€28.95

Free delivery: Aug 5 – 10

If paid before 14:00

Part no. 03L121131P

VW Crafter 2.0 Tdi CKTB Water Flange Coolant Temperature Sensor 03L121131P

€23.95

Free delivery: Aug 5 – 10

If paid before 14:00

Part no. 7H0121065C

Volkswagen T5 7H 7J Transporter Coolant Pipe Hose Tube Line Diesel 7H0121065C

€23.95

Free delivery: Aug 5 – 10

If paid before 14:00

Part no. 03C103493AG

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

€23.95

Free delivery: Aug 5 – 10

If paid before 14:00

Part no. 03G906088D

Volkswagen Tiguan 5N Audi A3 8P Exhaust Gas Temperature Sensor 03G906088D

€23.95

Free delivery: Aug 5 – 10

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: Aug 5 – 10

If paid before 14:00

Part no. 7H0819318A

Volkswagen Transporter T5 Webasto Heater Water Coolant Hose 7H0819318A

€23.95

Free delivery: Aug 5 – 10

If paid before 14:00

Part no. 1K0122101HR

Volkswagen Golf Mk6 Water Hose Coolant Radiator Pipe Line 1.4 TSI 1K0122101HR

€32.95

Free delivery: Aug 5 – 10

If paid before 14:00

Part no. 7H0122058C

Volkswagen Transporter Camper T5 Coolant Water Hose Pipe Line 7H0122058C

€23.95

Free delivery: Aug 5 – 10

If paid before 14:00

Part no. 03F121004E

Water Pump Volkswagen Polo 6R Audi A3 8P 1.2 Petrol Engine Coolant 03F121004E

€23.95

Free delivery: Aug 5 – 10

If paid before 14:00

Part no. 5N0122447AE

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

€23.95

Free delivery: Aug 5 – 10

If paid before 14:00

Part no. 5Q0122291CT

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

€23.95

Free delivery: Aug 5 – 10

If paid before 14:00

Part no. 7E0121407D

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

€28.95

Free delivery: Aug 5 – 10

If paid before 14:00

Part no. 058121301B

Volkswagen VW Passat B6 Radiator Fan Blade Cooling Shroud Holder 058121301B

€23.95

Free delivery: Aug 5 – 10

If paid before 14:00

Part no. 03C121050E

Audi A3 8P Volkswagen Golf Mk5 Heater Water Cooling Pipe Hose Line 03C121050E

€23.95

Free delivery: Aug 5 – 10

If paid before 14:00

Part no. 7L0121253A

Volkswagen Touareg 7L Water Cooling Coolant Radiator 7L0121253A

€28.95

Free delivery: Aug 5 – 10

If paid before 14:00

Part no. 2Q0121321A

SEAT Audi Volkswagen Skoda Water Coolant Expansion Tank Cap Cover 2Q0121321A

€23.95

Free delivery: Aug 5 – 10

If paid before 14:00

Part no. 06K121051M

Volkswagen Golf R Mk7 Audi A3 8V Coolant Pipe Hose 2.0 TSI 06K121051M

€23.95

Free delivery: Aug 5 – 10

If paid before 14:00

Part no. 1K0121058BS

Audi A3 8P Golf Mk6 Water Hose Radiator Coolant Pipe Line 2.0 TDI 1K0121058BS

€23.95

Free delivery: Aug 5 – 10

If paid before 14:00

Part no. 1T0122073BC

VW Volkswagen Caddy 2K Water Coolant Cooling Hose Pipe Diesel Engine 1T0122073BC

€42.95

Free delivery: Aug 5 – 10

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: Aug 5 – 10

If paid before 14:00

Part no. 1K0122101KN

VW Volkswagen Caddy Maxi Engine Radiator Coolant Hose Pipe Line 1K0122101KN

€23.95

Free delivery: Aug 5 – 10

If paid before 14:00

Part no. 2E0122101F-1

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

€28.95

Free delivery: Aug 5 – 10

If paid before 14:00

Part no. 03L121131AA

Volkswagen Golf Mk6 Caddy 1.6 TDI Engine Water Coolant Pipe Hose 03L121131AA

€23.95

Free delivery: Aug 5 – 10

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: Aug 5 – 10

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: Aug 5 – 10

If paid before 14:00

Part no. 03L906088HB

VW Crafter 35 Temperature Sensor Exhaust Gas Sensor Probe 2.0 TDI 03L906088HB

€23.95

Free delivery: Aug 5 – 10

If paid before 14:00

Part no. 1K0122063D

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

€23.95

Free delivery: Aug 5 – 10

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: Aug 5 – 10

If paid before 14:00

Part no. 1K0121070F

VW Volkswagen Touran 2.0 TDI BKD Water Hose Coolant Pipe Line 1K0121070F

€23.95

Free delivery: Aug 5 – 10

If paid before 14:00

Part no. 06A121132R

VW Volkswagen New Beetle 1.6 BFS Water Coolant Flange 06A121133AC

€23.95

Free delivery: Aug 5 – 10

If paid before 14:00

Part no. 03G906262B

Volkswagen VW Passat B6 Exhaust Gas Temperature Sensor Wiring 03G906262B

€23.95

Free delivery: Aug 5 – 10

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: Aug 5 – 10

If paid before 14:00

Part no. 7H0121407C

VW Transporter T5 Coolant Cooling Water Expansion Tank Bottle 7H0121407C

€23.95

Free delivery: Aug 5 – 10

If paid before 14:00

Part no. 5WA121407F

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

€23.95

Free delivery: Aug 5 – 10

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: Aug 5 – 10

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: Aug 5 – 10

If paid before 14:00

Part no. 059121075FE

Audi A7 4G Water Coolant Cooling Hose Pipe 3.0 TDI Diesel Engine 059121075FE

€23.95

Free delivery: Aug 5 – 10

If paid before 14:00

Part no. 1K0122073R

VW Volkswagen Golf Mk5 V Water Coolant Hose Pipe Line 1K0122073R

€23.95

Free delivery: Aug 5 – 10

If paid before 14:00

Part no. 04L121101

Volkswagen Passat B8 Coolant Water Hose Pipe 2.0 TDI 04L121101

€23.95

Free delivery: Aug 5 – 10

If paid before 14:00

Part no. 06F122101A

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

€23.95

Free delivery: Aug 5 – 10

If paid before 14:00

Part no. 03G906088K

Volkswagen VW Passat B6 Exhaust Gas Temperature Sensor Wiring 03G906088K

€23.95

Free delivery: Aug 5 – 10

If paid before 14:00

Part no. 04L121049H

VW Volkswagen Crafter SY Water Coolant Pipe Hose Tube Line 04L121049H

€42.95

Free delivery: Aug 5 – 10

If paid before 14:00

Part no. 1J0122051H

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

€23.95

Free delivery: Aug 5 – 10

If paid before 14:00

Part no. 5N0122101BB

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

€23.95

Free delivery: Aug 5 – 10

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: Aug 5 – 10

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: Aug 5 – 10

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: Aug 5 – 10

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: Aug 5 – 10

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: Aug 5 – 10

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: Aug 5 – 10

If paid before 14:00

Part no. 03L121111R

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

€28.95

Free delivery: Aug 5 – 10

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: Aug 5 – 10

If paid before 14:00

Part no. 3C0121087A

Volkswagen Passat B7 Radiator Coolant Hose Pipe 2.0 TDI 3C0121087A

€23.95

Free delivery: Aug 5 – 10

If paid before 14:00

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