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 Transporter T5 Coolant Hose Radiator Water Pipe 2.0 TDI 7E0122051E

€23.95

Free delivery: Aug 10 – 11

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: Aug 10 – 11

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: Aug 10 – 11

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: Aug 10 – 11

If paid before 14:00

Part no. 04B145735C

VW Volkswagen Polo Mk5 Turbocharger Oil Return Pipe Line 1.4 Diesel 04B145771L

€23.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. 5Q0122101S

VW Golf Mk7 Audi A3 8V Water Hose Radiator Coolant Pipe Line Diesel 5Q0122101S

€23.95

Free delivery: Aug 10 – 11

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: Aug 10 – 11

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: Aug 10 – 11

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: Aug 10 – 11

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: Aug 10 – 11

If paid before 14:00

Part no. 1K0122101KN-3

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

€23.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. 3AA122109B

Volkswagen Passat B7 Water Coolant Cooling Pipe Hose Line Diesel 3AA122109B

€28.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. 5WA121049J

Volkswagen Caddy SB Water Coolant Hose Pipe Line 5WA121049J

€70.95

Free delivery: Aug 10 – 11

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: Aug 10 – 11

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: Aug 10 – 11

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: Aug 10 – 11

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 10 – 11

If paid before 14:00

Part no. 6R0122101N

Volkswagen Polo 6R 1.2 Petrol Coolant Water Hose Pipe Line Radiator 6R0122101N

€23.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. 5Q0121407AA-1

Volkswagen Golf Mk7 Engine Coolant Water Expansion Tank Bottle 5Q0121407AA

€23.95

Free delivery: Aug 10 – 11

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 10 – 11

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: Aug 10 – 11

If paid before 14:00

Part no. 06F121133G

VW Volkswagen Golf 5 2.0 TSI BWA Petrol Engine Coolant Flange Hose 06F121133G

€23.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. 1K0121407F

Volkswagen Golf Mk6 Expansion Tank Header Coolant Reservoir Bottle 1K0121407F

€23.95

Free delivery: Aug 10 – 11

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: Aug 10 – 11

If paid before 14:00

Part no. 06A919501A

VW Volkswagen Transporter T5 Water Coolant Temperature Sensor Control 06A919501A

€23.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. 022121111G

Volkswagen Touareg 7L Coolant Thermostat Housing Assembly 022121111G

€23.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. 06A121132R

VW Volkswagen New Beetle 1.6 BFS Water Coolant Flange 06A121133AC

€23.95

Free delivery: Aug 10 – 11

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: Aug 10 – 11

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: Aug 10 – 11

If paid before 14:00

Part no. 2Q0121321A-2

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

€23.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. 3AA122101G

Volkswagen Passat CC Water Coolant Hose Pipe 2.0 TDI 3AA122101G

€37.95

Free delivery: Aug 10 – 11

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 10 – 11

If paid before 14:00

Part no. 06E121018D

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

€23.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. 1K0121096AT

VW Volkswagen Touran 1T 1.4 TSI Radiator Coolant Hose Line Tube Pipe 1K0121096AT

€23.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. 5N0122109D

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

€23.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. 7L6121253B

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

€28.95

Free delivery: Aug 7 – 11

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: Aug 10 – 11

If paid before 14:00

Part no. 1K0122073FR

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

€23.95

Free delivery: Aug 10 – 11

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: Aug 7 – 11

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: Aug 10 – 11

If paid before 14:00

Part no. 06F122101A-1

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

€23.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. 2K0122101F

VW Volkswagen Caddy Maxi 2k Engine Coolant Hose Engine Tube Line 2K0122101F

€51.95

Free delivery: Aug 10 – 11

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: Aug 10 – 11

If paid before 14:00

Part no. 5Q0122291K

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

€32.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. 022121121D

Volkswagen Touareg 7L Thermostat Housing 3.2 V6 Petrol 022121121D

€28.95

Free delivery: Aug 10 – 11

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: Aug 10 – 11

If paid before 14:00

Part no. 2K0122157BD

VW Volkswagen Caddy Maxi 2k Water Coolant Pipe Hose Tube Line 2K0122157BD

€23.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. 7L0121253A

Volkswagen Touareg 7L Water Cooling Coolant Radiator 7L0121253A

€28.95

Free delivery: Aug 7 – 11

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: Aug 10 – 11

If paid before 14:00

Part no. 2K0122051

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

€23.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. 7N0122073M

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

€28.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. 7E0963417B

Volkswagen Transporter T6 Camper T5 Additional Water Pump 7E0965561C

€42.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. 03E121065A

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

€23.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. 5C0971230J

Volkswagen New Beetle Alternator Generator Wiring Harness Cable 5C0971230J

€28.95

Free delivery: Aug 10 – 11

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: Aug 10 – 11

If paid before 14:00

Part no. 1K0965561G

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

€28.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. A9065010103

Volkswagen VW Crafter Coolant Expansion Tank Balancing Tank A9065010103

€47.95

Free delivery: Aug 10 – 11

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 10 – 11

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: Aug 10 – 11

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: Aug 10 – 11

If paid before 14:00

Part no. 1K0121070CM

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

€23.95

Free delivery: Aug 10 – 11

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: Aug 10 – 11

If paid before 14:00

Part no. 5Q0122291BG

VW Volkswagen Golf R MK7 Engine Water Coolant Pipe Hose Coupling 5Q0122291BG

€28.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. 03L906088FC

VW Transporter T6 Camper T5 Exhaust Temperature Sensor Diesel 03L906088FC

€61.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. 03L121131K

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

€28.95

Free delivery: Aug 10 – 11

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: Aug 10 – 11

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: Aug 10 – 11

If paid before 14:00

Part no. 7P0121065AC-1

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

€28.95

Free delivery: Aug 10 – 11

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: Aug 10 – 11

If paid before 14:00

Part no. 03G906088D

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

€23.95

Free delivery: Aug 10 – 11

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: Aug 10 – 11

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: Aug 10 – 11

If paid before 14:00

Part no. 7E0965551

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

€23.95

Free delivery: Aug 10 – 11

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 10 – 11

If paid before 14:00

Part no. 03F919501B

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

€23.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. 3D0907543A

Volkswagen VW Touran 1T Temperature Sensor Air Conditioning Heater 3D0907543A

€23.95

Free delivery: Aug 10 – 11

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: Aug 10 – 11

If paid before 14:00

Part no. 7N0122101F

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

€42.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. 06K121051P

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

€23.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. 5Q0122101CJ

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

€56.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. 6R0121447E

Volkswagen Polo 6R Water Hose Radiator Coolant Cooling Pipe Line 6R0121447E

€32.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. 5Q0122051AN

Volkswagen Golf Mk7 Audi A3 8V Coolant Hose Pipe 2.0 TSI TFSI 5Q0122051AN

€75.95

Free delivery: Aug 10 – 11

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: Aug 10 – 11

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 10 – 11

If paid before 14:00

Part no. 5K0122051AA

VW Volkswagen Caddy Maxi 2K Engine Cooling Hose Tube Pipe Line 5K0122051AA

€56.95

Free delivery: Aug 10 – 11

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 10 – 11

If paid before 14:00

Part no. 04E122447BG

Volkswagen Golf Mk7 5G Water Coolant Pipe Hose Line 1.5 TSI Petrol 04E122447BG

€23.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. 6R0121109K

Seat Ibiza 6j Mk4 Radiator Coolant Water Hose Pipe Line 1.4 TSI 6R0121109K

€23.95

Free delivery: Aug 10 – 11

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: Aug 10 – 11

If paid before 14:00

Part no. 2N0965567B

VW Crafter SY Additional Water Pump Engine Coolant Unit 2.0 TDI 2N0965567B

€94.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. 06F122101A

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

€23.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. 1K0122073ER

VW Golf Mk5 Audi A3 8P Water Hose Cooling Coolant Radiator Pipe Line 1K0122073ER

€23.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. 5Q0122051AT

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

€23.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. 2Q0121321A

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

€23.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. 06F121111F

VW Volkswagen Golf 5 2.0 TFSI BWA Coolant Thermostat Housing 06F121111F

€23.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. 1K0122157KD

VW Golf Mk5 Audi A3 8P Radiator Water Coolant Pipe Hose 1K0122157KD

€42.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. 6Q0122101AP

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

€23.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. 5Q0122051EN-1

VW Golf Sportsvan Seat Leon Mk3 5F Water Coolant Pipe Hose 1.5 TSI 5Q0122051EN

€37.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. 1K0121251DD

VW Volkswagen Golf MK6 Radiator Engine Cooling Coolant Water Unit 1K0121251DD

€37.95

Free delivery: Aug 7 – 11

If paid before 14:00

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