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 Touareg 7L Audi A4 B7 Water Cooling Coolant Pipe Hose 3.0 TDI 059121065AK

€23.95

Free delivery: Sep 17 – 22

If paid before 14:00

Part no. 04B121064

Volkswagen VW Polo 6C Water Coolant Pipe Hose Line 1.4 TDI Diesel 04B121064

€47.95

Free delivery: Sep 17 – 22

If paid before 14:00

Part no. 1K0122101JQ-1

VW Volkswagen Touran 1T Audi A3 8P Coolant Water Hose Pipe Tube Line 1K0122101JQ

€47.95

Free delivery: Sep 17 – 22

If paid before 14:00

Part no. 7P6121070AK

VW Volkswagen Touareg 7P Gearbox Coolant Pipe Hose Tube 3.0 Diesel 7P6121070AK

€32.95

Free delivery: Sep 17 – 22

If paid before 14:00

Part no. 6R0121070G

VW Volkswagen Polo GTI 6R 1.4 Petrol Engine Coolant Pipe Hose Line 6R0121070G

€23.95

Free delivery: Sep 17 – 22

If paid before 14:00

Part no. 5Q0121096

Volkswagen Golf R 5G Engine Water Coolant Hose Tube Line 2.0 Petrol 5Q0121096

€23.95

Free delivery: Sep 17 – 22

If paid before 14:00

Part no. 5Q0121064AR

Volkswagen VW Golf Mk7 Audi A3 8V Engine Coolant Pipe Hose Line 5Q0121064AR

€23.95

Free delivery: Sep 17 – 22

If paid before 14:00

Part no. 03C121111B-1

Volkswagen VW Polo Mk5 6R Water Coolant Thermostat Housing 03C121111B

€23.95

Free delivery: Sep 17 – 22

If paid before 14:00

Part no. 1K0122101KN-3

Volkswagen VW Scirocco Mk3 Engine Radiator Coolant Hose Pipe Line 1K0122101KN

€23.95

Free delivery: Sep 17 – 22

If paid before 14:00

Part no. 04L122157S

Volkswagen Tiguan 5N Passat Audi Q2 Q3 Water Coolant Hose Pipe Line 04L122157S

€23.95

Free delivery: Sep 17 – 22

If paid before 14:00

Part no. 1K0122109CD

Volkswagen VW Golf Mk6 Water Hose Coolant Pipe Line 1.4 TSI 1K0122109CD

€28.95

Free delivery: Sep 17 – 22

If paid before 14:00

Part no. 03C121008E

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

€47.95

Free delivery: Sep 17 – 22

If paid before 14:00

Part no. 1K0122447DK

VW Golf Mk5 Audi A3 8P Water Hose Radiator Coolant Pipe 1.6 Petrol 1K0122447DC

€23.95

Free delivery: Sep 17 – 22

If paid before 14:00

Part no. 5K0122101N

Volkswagen Scirocco III 2.0 TDI Coolant Hose Radiator Water Pipe Line 5K0122101N

€32.95

Free delivery: Sep 17 – 22

If paid before 14:00

Part no. 5WA121049J

Volkswagen Caddy SB Water Coolant Hose Pipe Line 5WA121049J

€70.95

Free delivery: Sep 17 – 22

If paid before 14:00

Part no. 1K0122063K

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

€23.95

Free delivery: Sep 17 – 22

If paid before 14:00

Part no. 5K0121283E

VW Volkswagen Golf Mk6 GTI Radiator Air Duct Guide Panel Left N/S 5K0121283E

€23.95

Free delivery: Sep 17 – 22

If paid before 14:00

Part no. 03F133514F

Volkswagen Polo 6R Water Radiator Pipe Hose Coolant Cooling Line 03F133514F

€23.95

Free delivery: Sep 17 – 22

If paid before 14:00

Part no. 5Q0122101CL

Skoda Octavia Mk3 Water Hose Radiator Coolant Pipe Line 2.0 TDI 5Q0122101CL

€23.95

Free delivery: Sep 17 – 22

If paid before 14:00

Part no. 04E121600CB

VW Volkswagen Golf 5G 1.0 1.2 1.4 TSI Engine Coolant Water Pump 04E121600CB

€23.95

Free delivery: Sep 17 – 22

If paid before 14:00

Part no. 1K0121407F

Volkswagen Golf Mk6 Expansion Tank Header Coolant Reservoir Bottle 1K0121407F

€23.95

Free delivery: Sep 17 – 22

If paid before 14:00

Part no. 1K0121251DM

VW Volkswagen Golf 6 Radiator Engine Cooling Coolant Water Unit 1K0121251DM

€42.95

Free delivery: Sep 17 – 22

If paid before 14:00

Part no. 022121111G

Volkswagen Touareg 7L Coolant Thermostat Housing Assembly 022121111G

€23.95

Free delivery: Sep 17 – 22

If paid before 14:00

Part no. 2K5122157

Volkswagen Caddy 2k Engine Coolant Water Pipe Hose Line 2K5122157

€23.95

Free delivery: Sep 17 – 22

If paid before 14:00

Part no. 1K0121058P

Audi A6 C6 Oil Cooler Hose Pipe Line Tube 2.0 TDI Diesel Engine 1K0121058P

€23.95

Free delivery: Sep 17 – 22

If paid before 14:00

Part no. 5Q0121070BT

VW Volkswagen Polo AW Mk6 Water Hose Engine Coolant Pipe 2.0 TFSI 5Q0121070BT

€37.95

Free delivery: Sep 17 – 22

If paid before 14:00

Part no. 5Q0121058AC

VW Polo GTI AW Audi A3 8V Water Hose Cooling Coolant Pipe 2.0 TFSI 5Q0121058AC

€23.95

Free delivery: Sep 17 – 22

If paid before 14:00

Part no. 03C133514BN

VW Volkswagen Touran 1T 1.4 TSI CAVC Connecting Hose Pipe Line Tube 03C133514BN

€23.95

Free delivery: Sep 17 – 22

If paid before 14:00

Part no. 5Q0121070AP-2

Volkswagen Golf R Mk7 Audi S3 8V Coolant Pipe Hose Line 2.0 TFSI 5Q0121070AP

€23.95

Free delivery: Sep 17 – 22

If paid before 14:00

Part no. 5Q0122051EG-1

Volkswagen Golf R Mk7 Audi S3 8V Coolant Pipe Hose Line 2.0 TFSI DJH 5Q0122051EG

€56.95

Free delivery: Sep 17 – 22

If paid before 14:00

Part no. 5Q0122058Q

Volkswagen Golf 5G Water Hose Cooling Coolant Pipe Line 5Q0122058Q

€51.95

Free delivery: Sep 17 – 22

If paid before 14:00

Part no. 03C121121C

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

€23.95

Free delivery: Sep 17 – 22

If paid before 14:00

Part no. 2Q0121321A-2

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

€23.95

Free delivery: Sep 17 – 22

If paid before 14:00

Part no. 3AA122101G

Volkswagen Passat CC Water Coolant Hose Pipe 2.0 TDI 3AA122101G

€37.95

Free delivery: Sep 17 – 22

If paid before 14:00

Part no. 1K0122447FB

Volkswagen Golf Mk5 Touran Mk1 Radiator Coolant Water Hose Pipe 1K0122447FB

€23.95

Free delivery: Sep 17 – 22

If paid before 14:00

Part no. 06E121018D

Volkswagen Touareg 7L 3.0 TDI Engine Coolant Water Pump Unit 06E121005

€23.95

Free delivery: Sep 17 – 22

If paid before 14:00

Part no. 6R0121157

Volkswagen Polo 6R Water Hose Radiator Coolant Pipe Line 6R0121157

€23.95

Free delivery: Sep 17 – 22

If paid before 14:00

Part no. 5N0122109D

VW Volkswagen Sharan 7n Tiguan 5N Coolant Hose Tube Line Pipe 5N0122109D

€23.95

Free delivery: Sep 17 – 22

If paid before 14:00

Part no. 7L6121253B

VW Volkswagen Touareg 7L 3.0TDI Radiator Engine Cooling Coolant Unit 7L6121253B

€28.95

Free delivery: Sep 17 – 22

If paid before 14:00

Part no. 6R0122101P

Volkswagen 6R Coolant Water Hose Pipe Line Radiator Cooler 6R0122101P

€23.95

Free delivery: Sep 17 – 22

If paid before 14:00

Part no. 1K0965561F

VW Passat B7 Auxiliary Water Pump Coolant Unit Cooling Heating Valve 1K0965561F

€23.95

Free delivery: Sep 17 – 22

If paid before 14:00

Part no. 6Q0121407B-1

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

€23.95

Free delivery: Sep 17 – 22

If paid before 14:00

Part no. 5Q0122157AK

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

€23.95

Free delivery: Sep 17 – 22

If paid before 14:00

Part no. 059117021J

Volkswagen Touareg 7L Audi Q7 4L A6 C6 Engine Oil Cooler 3.0 TDI 059117021J

€23.95

Free delivery: Sep 17 – 22

If paid before 14:00

Part no. 03C121065F

Volkswagen VW Touran 1T Petrol Engine Coolant Pipe Hose Vent 03C121065F

€23.95

Free delivery: Sep 17 – 22

If paid before 14:00

Part no. 6R0121101K

VW Volkswagen Polo 6R 5 Water Hose Radiator Coolant Cooling Pipe Line 6R0121101K

€23.95

Free delivery: Sep 17 – 22

If paid before 14:00

Part no. 1K0122073FR

VW Volkswagen Golf Mk6 Water Coolant Hose Pipe Line Petrol Engine 1K0122073FR

€23.95

Free delivery: Sep 17 – 22

If paid before 14:00

Part no. 7L6122447BD

VW Volkswagen Touareg 7L Audi Q7 4L Coolant Hose Pipe Line Tube 7L6122447BD

€23.95

Free delivery: Sep 17 – 22

If paid before 14:00

Part no. 06F122101A-1

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. 5K0121251S

VW Jetta Mk4 Additional Coolant Radiator Engine Cooling Unit 1.4 TSI 5K0121251S

€156.95

Free delivery: Sep 17 – 22

If paid before 14:00

Part no. 5QF122157AB

VW Volkswagen Tiguan AX1 1.5 Petrol Engine Coolant Hose Line Tube 5QF122157AB

€42.95

Free delivery: Sep 17 – 22

If paid before 14:00

Part no. 2E0122096E-1

VW Volkswagen Crafter 2E Coolant Hoses Water Cooling Pipe 2E0122096E

€23.95

Free delivery: Sep 17 – 22

If paid before 14:00

Part no. 06K103199A

Volkswagen Golf R Mk7 Audi A3 8V Engine Crankcase Pipe Line 2.0 TFSI 06K103199A

€89.95

Free delivery: Sep 17 – 22

If paid before 14:00

Part no. 5C0971230J

Volkswagen New Beetle Alternator Generator Wiring Harness Cable 5C0971230J

€28.95

Free delivery: Sep 17 – 22

If paid before 14:00

Part no. 022121121D

Volkswagen Touareg 7L Thermostat Housing 3.2 V6 Petrol 022121121D

€28.95

Free delivery: Sep 17 – 22

If paid before 14:00

Part no. 03N121070K

VW Volkswagen Tiguan AD1 Water Coolant Hose Pipe Line 2.0 TDI 03N121070K

€28.95

Free delivery: Sep 17 – 22

If paid before 14:00

Part no. N90693001

Volkswagen Passat B6 Engine Coolant System T-Piece Line Hose Tube Pipe N90693001

€23.95

Free delivery: Sep 17 – 22

If paid before 14:00

Part no. 03C121469C

Volkswagen Golf Mk5 Engine Cooling Coolant Water Pipe Line 1.4 TSI 03C121469C

€23.95

Free delivery: Sep 17 – 22

If paid before 14:00

Part no. 05E121497A

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

€23.95

Free delivery: Sep 17 – 22

If paid before 14:00

Part no. 2H0121805-1

Volkswagen Crafter 2E Engine Cooling Vacuum Valve Heating Pipe 2.0 TDI 2H0121805

€37.95

Free delivery: Sep 17 – 22

If paid before 14:00

Part no. 3D0965561D

Volkswagen LT Auxiliary Electric Water Pump Coolant Circulation 3D0965561D

€23.95

Free delivery: Sep 17 – 22

If paid before 14:00

Part no. 2K0122051

Volkswagen Caddy Mk3 Engine Water Coolant Pipe Hose 1.9 TDI 2K0122051

€23.95

Free delivery: Sep 17 – 22

If paid before 14:00

Part no. 5C0965567

VW Scirocco Mk3 Audi A1 8X Auxiliary Water Pump 1.4 Petrol 5C0965567

€23.95

Free delivery: Sep 17 – 22

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: Sep 17 – 22

If paid before 14:00

Part no. 03L121064F

Volkswagen Transporter T5 Engine Coolant Pipe Hose Line 2.0 TDI 03L121064F

€47.95

Free delivery: Sep 17 – 22

If paid before 14:00

Part no. 7N0122073M

VW Volkswagen Sharan 7N Water Coolant Hose Pipe Line Tube 7N0122073M

€28.95

Free delivery: Sep 17 – 22

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: Sep 17 – 22

If paid before 14:00

Part no. 6Q0122051BP

Volkswagen VW Polo 9N 1.2 Water Hose Radiator Coolant Pipe Line 6Q0122051BP

€32.95

Free delivery: Sep 17 – 22

If paid before 14:00

Part no. 5Q0122073AN

Volkswagen Golf Mk7 Water Coolant Pipe Hose Line 1.4 TSI 5Q0122073AN

€23.95

Free delivery: Sep 17 – 22

If paid before 14:00

Part no. 7E0963417B

Volkswagen Transporter T6 Camper T5 Additional Water Pump 7E0965561C

€42.95

Free delivery: Sep 17 – 22

If paid before 14:00

Part no. 03L906088BN

Volkswagen Transporter T5 T6 Exhaust Gas Temperature Sensor TDI 03L906088BN

€23.95

Free delivery: Sep 17 – 22

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: Sep 17 – 22

If paid before 14:00

Part no. MB3G-8C351-PB

VW Volkswagen Amarok Mk2 Engine Coolant Pipe Hose Line Diesel MB3G-8C351-PB

€28.95

Free delivery: Sep 17 – 22

If paid before 14:00

Part no. 2K0422371A

Volkswagen VW Caddy 2K Power Steering Fluid Expansion Tank Reservoir 2K0422371A

€28.95

Free delivery: Sep 17 – 22

If paid before 14:00

Part no. 2N0122073H

Volkswagen Crafter Mk2 Water Coolant Pipe Hose Line 2.0 TDi Diesel 2N0122073H

€42.95

Free delivery: Sep 17 – 22

If paid before 14:00

Part no. 7E0122051M

Volkswagen Transporter T5 T6 Water Coolant Pipe Hose Tube 2.0 TDI 7E0122051M

€23.95

Free delivery: Sep 17 – 22

If paid before 14:00

Part no. 1K0121070CM

Volkswagen Golf Mk6 Scirocco Mk3 Audi A3 8P Water Coolant Pipe 1K0121070CM

€23.95

Free delivery: Sep 17 – 22

If paid before 14:00

Part no. 6Q0122101AP-1

Skoda Fabia Mk1 6Y Water Hose Cooling Coolant Pipe Line 1.9 Diesel 6Q0122101AP

€23.95

Free delivery: Sep 17 – 22

If paid before 14:00

Part no. 1K0122109CM

Volkswagen Golf Mk6 Scirocco Mk3 Water Coolant Pipe Hose 1.6 TDI 1K0122109CM

€23.95

Free delivery: Sep 17 – 22

If paid before 14:00

Part no. 03L906088FC

VW Transporter T6 Camper T5 Exhaust Temperature Sensor Diesel 03L906088FC

€61.95

Free delivery: Sep 17 – 22

If paid before 14:00

Part no. 7H0121276C

VW Transporter T5 T6 Radiator Mount Carrier Bracket Left Right N/O/S 7H0121276C

€23.95

Free delivery: Sep 17 – 22

If paid before 14:00

Part no. 7P0121065AC-1

Volkswagen Touareg 7P Preheater Pipe Hose Line 3.0 TDI 7P0121065AC

€28.95

Free delivery: Sep 17 – 22

If paid before 14:00

Part no. 6C0122157A

Volkswagen Polo 6R Water Pipes Hoses Coolant Cooling Line 6C0122157A

€23.95

Free delivery: Sep 17 – 22

If paid before 14:00

Part no. 5QF122051BB

Volkswagen Tiguan AX1 1.5 Petrol Engine Coolant Hose Line Tube Pipe 5QF122051BB

€42.95

Free delivery: Sep 17 – 22

If paid before 14:00

Part no. 5Q0121070AG

VW Scirocco Mk3 Golf 5g Jetta A6 Water Coolant Pipe Hose Line Tube 5Q0121070AG

€28.95

Free delivery: Sep 17 – 22

If paid before 14:00

Part no. 5Q0121407F

AudVolkswagen Seat Skoda Expansion Tank Coolant Reservoir Bottle 5Q0121407F

€23.95

Free delivery: Sep 17 – 22

If paid before 14:00

Part no. 038906081B-1

Volkswagen Touran Audi A4 B7 A6 C6 Fuel Temperature Sensor 2.0 TDI 038906081B

€23.95

Free delivery: Sep 17 – 22

If paid before 14:00

Part no. 3Q0121064AM

VW Volkswagen Golf Cd1 Coolant Pipe Hose Tube Line 2.0 Diesel 3Q0121064AM

€28.95

Free delivery: Sep 17 – 22

If paid before 14:00

Part no. 7E0965551

VW Volkswagen Transporter T5 Coolant Water Pump Bracket Mount Holder 7E0965551

€23.95

Free delivery: Sep 17 – 22

If paid before 14:00

Part no. 03F919501B

Volkswagen Golf SV Jetta 16 Coolant Temperature Sender 1.5 TSI 03F919501B

€23.95

Free delivery: Sep 17 – 22

If paid before 14:00

Part no. 1K0965561G

Volkswagen Golf 1K 2.0 TFSI Additional Water Pump Engine Coolant Unit 1K0965561G

€23.95

Free delivery: Sep 17 – 22

If paid before 14:00

Part no. 7C0121444A

Volkswagen Crafter SY 2.0 TDI Engine Water Coolant Pipe Hose Line 7C0121444A

€32.95

Free delivery: Sep 17 – 22

If paid before 14:00

Part no. 7N0122101F

Volkswagen Sharan 7N Engine Cooling Water Pipes Hoses 1.4 TSI 7N0122101F

€42.95

Free delivery: Sep 17 – 22

If paid before 14:00

Part no. 06K121051P

Volkswagen Scirocco Mk3 Audi A3 8P Coolant Pipe Hose Line Tube 06K121051P

€23.95

Free delivery: Sep 17 – 22

If paid before 14:00

Part no. 5Q0121051D

Volkswagen Golf Mk7 Audi A3 8V Water Coolant Hose Pipe 2.0 TSI 5Q0121051D

€23.95

Free delivery: Sep 17 – 22

If paid before 14:00

Part no. 04L121011L

Volkswagen Tiguan Ad1 5N Coolant Water Pump 2.0 TDI Diesel CUAA 04L121011L

€56.95

Free delivery: Sep 17 – 22

If paid before 14:00

Part no. 5K0121064J

VW Scirocco Mk3 Jetta A6 Water Coolant Pipe Hose Line 2.0 TDI 5K0121064J

€23.95

Free delivery: Sep 17 – 22

If paid before 14:00

Part no. 5Q0122101CJ

Volkswagen Golf R Mk7 Coolant Hose Tube Quick Coupling 2.0 TFSI 5Q0122101CJ

€56.95

Free delivery: Sep 17 – 22

If paid before 14:00

Part no. 2E0122101G

Volkswagen Crafter 2E Metal Water Hose Cooling Coolant Pipe Line 2E0122101G

€56.95

Free delivery: Sep 17 – 22

If paid before 14:00

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