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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Audi Q3 8U Water Cooling Coolant Pipe Hose Line 2.0 TDI Diesel 5N0122157BN

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 04E122157H

Turbocharger Cooling Line VW Golf MK7 Audi A3 8V 1.4 TSI Water Pipe 04E122157H

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 8K0819374S

Audi A4 B8 A5 8T 2.0 TDI Heater Valve Coolant Pipe Hose 8K0819374S

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 03L121157AJ

Audi A4 B8 A5 8T Q5 8R Water Coolant Pipe To EGR Cooler 2.0 TDi 03L121157AJ

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 7L0121276A

Audi Q7 4L VW Touareg 7L Upper Radiator Rubber Mount Bush Grommet 7L0121276A

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 059121065EA

Audi A4 B9 A5 F5 Water Hose Cooling Coolant Radiator Pipe 3.0 TDI 059121065EA

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 059121071DE

Audi A4 B9 A5 8T Radiator Coolant Water Hose Line Tube Pipe 3.0 TDI 059121071DE

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 06E121031F

Audi A4 Avant A5 S5 A6 C7 A7 S4 Mk4 Q7 4L Water Pump V-Belt Pulley 06E121031F

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 06D121082B

Audi A4 B7 2.0 TFSI BGB Coolant Hose Line Tube Pipe 06D121082B

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 06K121075P

Audi A3 S3 8V Water Hose Radiator Coolant Pipe Line 2.0 Petrol 06K121075P

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 4G0121049L

Audi A7 4G 3.0 TDI CDUD Water Radiator Coolant Pipe Hose Tube Line 4G0121049L

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 4G0121403J

Audi A7 4G8 3.0 TDI CZVA Coolant Overflow Expansion Tank Bottle 4G0121403J

€32.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 1K0122447HC

Volkswagen Audi Seat Skoda Water Hose Radiator Coolant Pipe Line 1K0122447HC

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 06H121065D

Audi A5 8T 2.0 TFSI Water Hose Cooling Radiator Coolant Pipe Line 06H121065D

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 8K0121251R

Audi A4 B8 Coolant Radiator Engine Cooling Unit Radiator 8K0121251R

€37.95

Free delivery: Nov 10 – 13

If paid before 14:00

Part no. 059121071BJ

Audi A5 8T Radiator Coolant Water Hose Line Tube Pipe Diesel Engine 059121071BJ

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 8K0121403H

Audi A5 8T 2.0 TDI Coolant Expansion Overflow Reservoir Bottle Tank 8K0121403H

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 5Q0122051EJ

Audi A3 S3 8V 2.0 TFSI Engine Water Cooling Pipe Hose Line 5Q0122051EJ

€37.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 6R0121070L

Audi A1 8X 1.4 TSI Petrol Engine Water Hose Coolant Pipe Line 6R0121070L

€28.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 7L0121207D

Audi Q7 4L 3.0 TDI BUG Diesel A/C Air Condition Radiator Fan Shroud 7L0121207D

€104.95

Free delivery: Nov 10 – 13

If paid before 14:00

Part no. 5Q0965561B

Audi A3 8V 2.0 TDI Auxiliary Water Pump 5Q0965561B

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 4H0121081AB

Audi A8L 4H Expansion Bottle Tank Radiator Hose Line Tube Pipe 4H0121081AB

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 8K0959455P

Audi Q3 8U Radiator Fan Engine Cooling Cooler Blower Unit 8K0959455P

€28.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 06E121065N

Audi Q5 8R 3.0 TFSI Water Hose Cooling Coolant Pipe Line 06E121065N

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 03L121157AK

Audi A4 S4 8K A5 S5 8F Engine Water Coolant Hose Tube Pipe Line 03L121157AK

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 1K0122073GF

Audi A3 8P Water Hose Cooling Coolant Radiator Pipe Line 1K0122073GF

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 03L121157AP

Coolant Pipe Audi A4 B8 A5 8T 2.0 TDI Water Cooling Line 03L121157AP

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 03L906088BE

Audi Q5 8R 2.0 TDI CJCA Diesel Engine Exhaust Temperature Sensor 03L906088BE

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 03L122157Q

Audi A4 B8 A5 8T Coolant Pipe Water Cooling Line 2.0 TDI 03L122157Q

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 059121085Q

Audi A6 C8 Q7 4M Coolant Water Pipe Hose Line Tube 3.0 TDI 059121085Q

€32.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 06H121601P

Audi A6 C8 A5 F5 Q7 4M Electric Additional Auxiliary Water Pump 06H121601P

€42.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 8K0122101G

Audi A5 8T Heater Water Cooling Coolant Pipe Hose Line 8K0122101G

€32.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 07K121133E

Audi RS3 8V RSQ3 F3 Water Coolant Pump Regulator Flange 2.5 TFSI 07K121133E

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 1K0121063R

Audi A3 8P 1.4 TFSI CAXC Coolant Hose Line Tube Pipe 1K0121063R

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 1K0121207AA

Engine Cooling Radiator Audi A3 8P Diesel Radiator Coolant Fan 1K0121207AA

€113.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 06F115397H

Audi A4 B7 VW Golf Mk6 Oil Filter Housing Oil Cooler 2.0 Petrol 06F115397H

€32.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 7L6121212B

Audi Q7 4L 4.2 TDI Diesel Additional Radiator Right O/S Auxiliary 7L6121212B

€37.95

Free delivery: Nov 10 – 13

If paid before 14:00

Part no. 021121031D

Audi TT 8J 3.2 V6 BUB Water Pump Pulley Water Wheel Guide 021121031D

€37.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 8K0121003AG-1

Audi A6 C7 Radiator Cooling Fan Shroud Housing 1.8 TFSI Petrol 8K0121003AG

€156.95

Free delivery: Nov 10 – 13

If paid before 14:00

Part no. 8K0121003P

Audi A4 B8 Q5 8R Engine Cooling Radiator Fan Shroud Coolant Panel 8K0121003P

€94.95

Free delivery: Nov 10 – 13

If paid before 14:00

Part no. 5Q0122096G

Audi A3 8V VW Golf MK7 Auxiliary Electric Additional Water Pump 5Q0122096G

€42.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 04L121064E

Audi A3 8V VW Golf Mk7 Engine Water Coolant Pipe Hose Line Diesel 04L121064E

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 6C0122051F

Audi A1 8X 1.6 TDI Diesel Water Coolant Pipes Hoses Cooling Line 6C0122051F

€85.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 8W0906088E

Audi A4 B9 2.0 TDI Diesel Exhaust Gas Temperature Sensor 8W0906088E

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 03L121157AC

Audi A4 B8 A5 8T Water Coolant Pipe Hose Line 2.0 TDI 03L121157AC

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 8R0121049J

Audi Q5 8R 2.0 TDI Coolant Water Hose Cooling Unit Line Tube Pipe 8R0121049J

€28.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 03C121050P

Audi A1 8X Oil Cooler Water Pipe 1.4 TSI Engine 03C121050P

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 8K0121081BC

Audi A4 B8 Rear Coolant Water Breather Pipe Line Tube Hose 8K0121081BC

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 8K0121081AB

Audi A4 B8 A5 8T Coolant Overflow Pipe Hose Fitting 2.0 Petrol 8K0121081AB

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 8W0122449Q

Audi S5 F5 Engine Water Coolant Pipe Hose Tube Line 3.0 TDI Diesel 8W0122449Q

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 2Q0965567A

VW Golf Mk7 Transporter T6 Additional Water Coolant Pump 1.6 TDI 2Q0965567A

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 057121075AF

Audi Q7 4L 4.2 TDI Water Coolant Pipe Hose Tube Line 057121075

€28.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 4E0265379G

Audi A8 D3 Engine Coolant Hose Pipe Tube Line 3.0 TDi Diesel ASB 4E0265379G

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 06J121065F

Audi TT 8J A3 8P A4 8K Water Hose Cooling Coolant Radiator Pipe Line 06J121065F

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 04L122157BB

Audi A4 B8 A5 8T Water Coolant Pipe Line Hose Tube 2.0 TDI 04L122157BB

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 8K0819376F

Audi A4 B8 Q5 8R A5 8T Water Coolant Hose Pipe Line TFSI Petrol 8K0819376F

€32.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 06M121013D

Audi RS5 F5 Engine Water Pump Coolant Cooling Unit Pump 06M121013D

€113.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 8R0121049E

Audi Q5 8R Water Coolant Pipe Hose Line 2.0 TDI Diesel Engine 8R0121049E

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 8E0121403

Expansion Tank Bottle Audi A4 B6 B7 VW Passat Coolant Reservoir Bottle 8E0121403

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 8W0819350G

Audi A4 B9 A5 F5 Water Coolant Heater Hose Pipe 2.0 TDI 8W0819350G

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 03L121157AH

Audi A5 S5 8F 2.0 TDI Water Hose Cooling Radiator Coolant Pipe Line 03L121157AH

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 4E0121055AC

Audi A8 D3 Engine Coolant Hose Tube Line Pipe Quick Coupling 4E0121055AC

€70.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 04L122157AQ

Audi A4 B9 A5 F5 Engine Coolant Pipe Hose 2.0 TDI Diesel 04L122157AQ

€37.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 04C121600L

Audi A3 8V VW Polo 6C Water Pump Housing Unit 1.4 TFSI 04C121042D

€37.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 6R0121063

Audi A1 8X Water Pipe Hose Line Engine Cooling Coolant Unit Hose 6R0121063

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 03L121132A

Audi A4 B8 2.0 TDI Diesel Thermostat Coolant Housing 03L121132A

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 04E122157AC

Audi A4 B9 Turbo Charger Coolant Pipe Hose Line Tube 1.4 TFSI 04E122157CA

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 8N0122101A

Audi A3 8P TT 8N Coolant Hose Water Pipe Flange Coupler 1.8 2.0 TFSI 8N0122101A

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 06E117021G

Audi A4 B8 A5 8T A6 C7 Oil Cooler Cooling Radiator 06E117021G

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 6C0129635B

Audi S1 8X Air Filter Connector Pipe Hose Line 2.0 TFSI CWZA 6C0129635B

€37.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 8W0122055BN

Audi A4 B9 A5 F5 Coolant Pipe Radiator Hose Line Tube 2.0 Petrol 8W0122055BN

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 4K0121486

Audi A6 C8 A7 4K Coolant Hose Water Pipe Cooling Line 4K0121486

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 06J121132G

Audi TT 8J A4 B8 Water Coolant Flange Pipe Hose Line 06J121132G

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 4H0121003N

Audi A4 RS4 B8 Engine Cooling Double Coolant Fan Motor Shroud 4H0121003N

€137.95

Free delivery: Nov 10 – 13

If paid before 14:00

Part no. 8R0121081N

Audi A4 B8 A5 8T Radiator Water Coolant Pipe Hose Pipe Line 2.0 TFSI 8R0121081N

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 8W0121405G

Audi A4 B9 A5 F5 Expansion Tank Water Coolant Bottle Reservoir 8W0121405G

€28.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 5Q012210GJ

Audi A3 8V Water Hose Cooling Radiator Coolant Pipe Line 5Q012210GJ

€28.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 8W0819334AE

Audi A5 F5 Coolant Water Quick Connect Heater Pipe Hose 8W0819334AE

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 8J0121284A

Audi TT 8J Mk2 Radiator Air Guide Duct Cover Right O/S 8J0121284A

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 04L121070D

Audi A3 8V 2.0 TDI Diesel Water Coolant Hose Pipe Tube Line 04L121070D

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 06F145762

Audi TTS 8J Coolant Water Pipe Hose Line 2.0 TFSI Quattro CDLB 06F145762

€28.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 03C121070L

Audi A3 8P Water Hose Radiator Coolant Pipe Line Petrol 03C121070L

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 06J121075F

Audi TT 8J A3 8P Petrol Coolant Hose Diesel Water Pipe Line Tube 06J121075F

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 4H0121088AD

Audi A8 4H Expansion Bottle Tank Radiator Hose Line Tube Pipe 4H0121088AD

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 8X0805594B

Audi A1 8X Front Slam Panel Crossmember Reinforcement Support 8X0805594B

€237.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 7P0965561

Audi Q7 4L 3.0 TDI BUG Additional Auxiliary Water Coolant Pump 7P0965561

€32.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 1K0121049CA

Audi A3 8P Engine Cooling Radiator Water Coolant Pipe 1.4 TSI CAXC 1K0121049CA

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 03L121157E

Audi A4 S4 8K A5 S5 8T Engine Coolant Hose Tube Line Pipe 2.0 TDI 03L121157E

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 8E0959455P-1

Engine Cooling Audi RS4 B7 4.2 Petrol Radiator Coolant Fan Left N/S 8E0959455P

€89.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 059121065BB

Audi A5 8T Engine Coolant Water Hose Pipe 3.0 TDI V6 059121065

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 4L0145738B

Audi Q7 4L 3.0 TDI Engine Coolant Water Pipe Hose Line 4L0145738B

€32.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 1K0121109AL

Audi A3 8P Radiator Water Coolant Hose Pipe Line 1.8 FSI Petrol 1K0121109AL

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. A8E0199455F

Audi RS4 B7 Engine Cooling System Guard Plate Cover Bracket Mount A8E0199455F

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 5C0965567A

Audi A3 8V Additional Water Pump 1.4 Petrol CXSA 5C0965567A

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 8V0121397A

Audi RSQ3 F3 Engine Water Coolant Hose Pipe Left N/S 2.5 TFSI 8V0121397A

€104.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 06J121075F-1

Audi TT 8J A3 8P VW Golf GTI 5K Sharan Coolant Hose Water Pipe Line 06J121075F

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 07K121057-1

Audi RS3 TTRS RSQ3 8U Coolant Hose Pipe 2.5 TFSI Cooling Line 07K121057

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 4G0145919AC-1

Audi A6 C7 A7 4G Water Pipe Hose Engine Cooling Coolant Line 4G0145919AC

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 8J0121447H

Audi TT 8J 2.0 TDI CFGB Engine Coolant Hose Pipe 8J0121447H

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

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