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 Transporter T6 Coolant Liquid Overflow Tank Reservoir 2.0 Diesel 7E0121407D

€28.95

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Part no. 5N0971349BQ

Volkswagen Sharan 7N Alternator Generator Wiring Harness Cable 5N0971349BQ

€23.95

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Part no. 03F121065A

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

€23.95

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Part no. 1K0121101CP

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

€23.95

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Part no. 2E0122101F-1

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

€28.95

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Part no. 06D121521C

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

€23.95

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Part no. 1K0121284F

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

€23.95

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Part no. 04L121065BH

Volkswagen Tiguan 5n Water Coolant Pipe Hose Tube Line 2.0 TDI CUVC 04L121065BH

€23.95

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Part no. 5Q0121447G

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

€23.95

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Part no. 03L906088HC

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

€23.95

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Part no. 03G121065H

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

€23.95

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Part no. 1K0121101CP-1

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

€23.95

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Part no. 5K0122051N

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

€28.95

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Part no. 5Q0907543A

Volkswagen VW Golf Mk8 Interior Temperature Sensor Unit 5Q0907543A

€23.95

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Part no. 7H0121407C

VW Transporter T5 Coolant Cooling Water Expansion Tank Bottle 7H0121407C

€23.95

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Part no. 1K0122109-1

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

€23.95

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Part no. 04L121101

Volkswagen Passat B8 Coolant Water Hose Pipe 2.0 TDI 04L121101

€23.95

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Part no. 6R0122109G

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

€23.95

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Part no. 1J0122051H

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

€23.95

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Part no. 5N0122101BB

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

€23.95

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Part no. 7E0121101B-1

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

€23.95

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Part no. 7N0820721

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

€28.95

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Part no. 04L121131AB-1

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

€23.95

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Part no. 03L201360G

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

€23.95

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Part no. 6Y0122157B

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

€23.95

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Part no. 1K0122447DD

VW Volkswagen Eos 1F Water Hose Radiator Coolant Pipe 2.0 Petrol 1K0122447DC

€23.95

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

€23.95

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Part no. 3C0121087A

Volkswagen Passat B7 Radiator Coolant Hose Pipe 2.0 TDI 3C0121087A

€23.95

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Part no. 6R0122101DD-1

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

€28.95

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Part no. 6Y0122073B

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

€23.95

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Part no. 6Y0121049H

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

€23.95

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Part no. 1K0907543G

Volkswagen Tiguan 5N Temparature Sensor Interior Temperature Sensor 1K0907543G

€23.95

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Part no. 5Q0122051BA

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

€23.95

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Part no. 3Q0121156D

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

€89.95

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Part no. 6Y0121086F

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

€23.95

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Part no. 03D121026F

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

€23.95

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Part no. 1K0820897A

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

€23.95

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Part no. 1K0122447GF

Volkswagen Passat B7 Coolant Pipe Hose Line 2.0 TDI 1K0122447GF

€23.95

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Part no. 1J0121156AT

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

€28.95

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Part no. 7P6122051D

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

€56.95

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Part no. 7L0815857C

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

€23.95

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Part no. 7P0121065M-1

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

€23.95

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Part no. 5Q0122101BJ

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

€23.95

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Part no. 1K0121058D

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

€23.95

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Part no. 5N0121086J

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

€23.95

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Part no. 06F121492B

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

€184.95

Free delivery: Sep 23 – 24

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Part no. 5Q0122051CM

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

€61.95

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Part no. 7C0121096

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

€32.95

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Part no. 6C0121407-1

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

€23.95

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Part no. 5WA121109F

Volkswagen Golf CD1 Engine Water Coolant Pipe Hose 5WA121109F

€23.95

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Part no. 03D103211C

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

€23.95

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Part no. 7C0121130C

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

€42.95

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Part no. 2E0121447C

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

€23.95

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Part no. 1K0121086AH

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

€28.95

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Part no. 04L121111-1

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

€23.95

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Part no. 7C0121445

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

€23.95

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Part no. A9068322123

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

€23.95

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Part no. 038121132G

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

€23.95

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Part no. 2E0122101F

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

€28.95

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Part no. 6R0122157AR

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

€23.95

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Part no. 04L121111A

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

€23.95

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Part no. 2E0122096J

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

€28.95

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Part no. 3C0122096G

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

€61.95

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Part no. 6R0122101G

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

€66.95

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Part no. 2E0121096A

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

€23.95

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Part no. 5Q0121049R

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

€51.95

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Part no. 03L121049G

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

€23.95

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Part no. 7H0121447D

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

€28.95

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Part no. 3C0122157DR

Volkswagen Passat CC Water Coolant Hose Pipe 3C0122157DR

€23.95

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Part no. 5WA121109D

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

€23.95

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Part no. 3C0122073EJ

Volkswagen Passat CC Skoda Superb Water Coolant Hose Pipe 3C0122073EJ

€23.95

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Part no. 7C0121082B

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

€23.95

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Part no. 5N0121070G

Volkswagen Tiguan 1 5N 2,0 TDi Diesel Coolant Pipe Water Line 5N0121070G

€23.95

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Part no. 03C121008E

Volkswagen VW Golf Mk5 Water Pump Coolant Unit Cooling 1.4 TSI Petrol 03C121008E

€47.95

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

€89.95

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VW Volkswagen Tiguan 5N Coolant Hose Feed Pipe Quick Release Coupling 5QF122101E

€23.95

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Part no. 06F121111G

VW Eos 1f Audi A3 8P Thermostat Housing Bracket Cover 2.0 FSI 06F121111G

€23.95

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VW Volkswagen Caddy 2k Coolant Pipe Hose Tube Engine Cooling System 03G121065AA

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

€23.95

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

€23.95

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Volkswagen Transporter T5 2.0 TDi Engine CAAA Water Pump 03L121011J

€37.95

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Part no. 06A121121C

Audi Seat Skoda VW Golf MKV Coolant Flange Thermostat Housing Flange 06A121121C

€23.95

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Part no. 1K0122063K

Seat Leon Volkswagen Golf Mk6 Audi A1 8X Water Coolant Pipe Hose Line 1K0122063K

€23.95

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VW Volkswagen Eos 1f Golf 1K Jetta 1K Coolant Hose Pipe Tube Line 1K0121157BP

€23.95

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

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Volkswagen Golf MK7 Audi A3 8V Water Coolant Hose 1.4 TSI 5Q0122157BP

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