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 Q2 GA 2.0 TDI Water Hose Cooling Radiator Coolant Pipe Line 3Q0121070AG

PLN 113.95

Free delivery: Aug 03

If paid before 14:00

Part no. 4G1819350AT

Audi A6 C7 A7 4G Heater Coolant Cooling Hose Pipe Line 4G1819350AT

PLN 61.95

Free delivery: Aug 03

If paid before 14:00

Part no. 06H121601P

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

PLN 189.95

Free delivery: Aug 03

If paid before 14:00

Part no. 8W0122101AL

Audi A5 8T Coolant Water Hose Line Tube Pipe 2.0 TDI Diesel 8W0122101AL

PLN 94.95

Free delivery: Aug 03

If paid before 14:00

Part no. 4K0819342J

Audi A6 C8 Engine Coolant Pipe Line Heating Hose 2.0 TFSI Hybrid 4K0819342J

PLN 284.95

Free delivery: Aug 03

If paid before 14:00

Part no. 8E0121049L

Audi A4 B7 2.0 Petrol Water Hose Cooling Radiator Coolant Pipe Line 8E0121049L

PLN 42.95

Delivery: Aug 03

If paid before 14:00

Part no. 5Q0121058AE

VW Polo GTI AW Audi A3 8V Water Hose Cooling Coolant Pipe 2.0 TFSI 5Q0121058AE

PLN 42.95

Delivery: Aug 03

If paid before 14:00

Part no. 8K0121251T

Audi A4 B8 2.0 TDI Diesel Motor Engine Coolant Radiator Intercooler 8K0121251T

PLN 360.95

Free delivery: Aug 3 – 4

If paid before 14:00

Part no. 06A121065AP

Audi A3 8P Coolant Hose Water Pump Pipe Cooling Line 1.6 Petrol 06A121065AP

PLN 42.95

Delivery: Aug 03

If paid before 14:00

Part no. 5Q0816743D

Audi A3 8V VW Golf Mk7 Air Conditioning Hose A/C Pipe Line 5Q0816743D

PLN 142.95

Free delivery: Aug 03

If paid before 14:00

Part no. 8E0121058B

Audi RS4 B7 Water Coolant Cooling Pipe Hose Line 4.2 FSI Petrol 8E0121058B

PLN 94.95

Free delivery: Aug 03

If paid before 14:00

Part no. 059121054C

Audi A8 D4 3.0 TDI Diesel Coolant Water Hose Line Tube Pipe Engine 059121054C

PLN 61.95

Free delivery: Aug 03

If paid before 14:00

Part no. 1K0121109AL

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

PLN 46.95

Delivery: Aug 03

If paid before 14:00

Part no. 5Q0121070BR

Audi A3 8V 2.0 TFSI Water Hose Engine Coolant Cooling Pipe Line 5Q0121070BR

PLN 322.95

Free delivery: Aug 03

If paid before 14:00

Part no. 06E121044L-1

Audi A4 S4 B8 S5 8T A6 C7 Coolant Pipe Hose Tube Line 06E121044L

PLN 61.95

Free delivery: Aug 03

If paid before 14:00

Part no. 07L121481H

Audi A6 C6 S8 D3 Engine Water Coolant Pipe Line Tube Hose 07L121481H

PLN 237.95

Free delivery: Aug 03

If paid before 14:00

Part no. 06J121497J

Audi TT 8J Turbine Lubrication Inlet Oil Feed Line Pipe 06J121497J

PLN 75.95

Free delivery: Aug 03

If paid before 14:00

Part no. 5N0122157BE

Audi Q3 8U Coolant Hose Tube Line Pipe Quick Release Coupling 5N0122157BE

PLN 94.95

Free delivery: Aug 03

If paid before 14:00

Part no. 5N0122051AT

Audi Q3 8U 2.0 TDI Engine Water Coolant Pipe Hose 5N0122051AT

PLN 94.95

Free delivery: Aug 03

If paid before 14:00

Part no. 05L121011D

Audi A4 B9 Volkswagen Arteon 3H Engine Coolant Water Pump 2.0 TDI 05L121011D

PLN 522.95

Free delivery: Aug 03

If paid before 14:00

Part no. 8S0201801

Audi TT FV Petrol Activated Charcoal Tank Reservoir 8S0201801

PLN 70.95

Free delivery: Aug 03

If paid before 14:00

Part no. 8N0121073A

Audi TT 8N TTS Coolant Hose Tube Line Pipe 8N0121073A

PLN 237.95

Free delivery: Aug 03

If paid before 14:00

Part no. 06H121026DR

Audi A5 8T 2.0 TFSI CDNB Petrol Engine Water Pump 06H121026DR

PLN 280.95

Free delivery: Aug 03

If paid before 14:00

Part no. 059121447N

Audi A6 C8 Engine Coolant Water Pipe Return Line Tube Hose 059121447N

PLN 42.95

Delivery: Aug 03

If paid before 14:00

Part no. 7H0819617

Audi Q7 4L Webasto Auxiliary Water Heater Air Filter Unit Pipe 7H0819617

PLN 61.95

Free delivery: Aug 03

If paid before 14:00

Part no. 8K0819342L

Audi S5 8T 3.0 TFSI Coolant Water Hose Line Cooling Tube Pipe 8K0819342L

PLN 94.95

Free delivery: Aug 03

If paid before 14:00

Part no. 4K0122101AT

Audi A6 C8 Water Pipe Hose Line Cooling Coolant 4K0122101AT

PLN 75.95

Free delivery: Aug 03

If paid before 14:00

Part no. 5Q0122101BL

Audi A3 8V 2.0 TDI Water Hose Radiator Coolant Pipe Line Diesel 5Q0122101BL

PLN 94.95

Free delivery: Aug 03

If paid before 14:00

Part no. 1K0121251AT

Volkswagen Jetta Golf 1K Audi A3 S3 Engine Radiator Water Cooler 1K0121251AT

PLN 142.95

Free delivery: Aug 3 – 4

If paid before 14:00

Part no. 8R0121081N

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

PLN 99.95

Free delivery: Aug 03

If paid before 14:00

Part no. 03L121157AA

Audi A4 B8 A5 8T Water Hose Cooling Radiator Pipe Line 2.0 TDI 03L121157AA

PLN 61.95

Free delivery: Aug 03

If paid before 14:00

Part no. 06K103495AS

Audi A4 B9 A5 F5 Engine Oil Separator Breather Petrol 2.0 TFSI DDWA 06K103495AS

PLN 113.95

Free delivery: Aug 03

If paid before 14:00

Part no. 5N0122101AS

Audi Q3 SE Coolant Hose With Quick Release Coupling Upper 5N0122101AS

PLN 360.95

Free delivery: Aug 03

If paid before 14:00

Part no. 8W0145920M

Audi A5 F5 Water Hose Cooling Radiator Coolant Pipe Line 2.0 TDI 8W0145920M

PLN 142.95

Free delivery: Aug 03

If paid before 14:00

Part no. 04L121011E-1

Audi A3 8V A4 B8 Electric Water Pump Unit 2.0 TDI Diesel Engine 04L121011E

PLN 94.95

Free delivery: Aug 03

If paid before 14:00

Part no. 03L121157AH

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

PLN 42.95

Delivery: Aug 03

If paid before 14:00

Part no. 4G0122109AA

Audi A6 C7 A7 4G Radiator Water Coolant Pipe Hose Line 3.0 TDI 4G0122109AA

PLN 42.95

Delivery: Aug 03

If paid before 14:00

Part no. 079121070BS

AUDI S5 8T 4.2 Petrol CAUA Coolant Pipe Right O/S Cooler Water Hose 079121070BS

PLN 42.95

Delivery: Aug 03

If paid before 14:00

Part no. 4M0819927CP

Audi Q7 4M Water Coolant Hose Tube Line Pipe 3.0 TDI Diesel Set 4M0819927CP

PLN 189.95

Free delivery: Aug 3 – 4

If paid before 14:00

Part no. 03L121111AC

Audi A3 8P 2.0 TDI Diesel Thermostat Coolant Housing 03L121111AC

PLN 61.95

Free delivery: Aug 03

If paid before 14:00

Part no. 5Q0121064BB

Audi A3 8V Water Pipe Hose Engine Cooling Coolant Unit Line 5Q0121064BB

PLN 61.95

Free delivery: Aug 03

If paid before 14:00

Part no. 8W0906088E

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

PLN 42.95

Delivery: Aug 03

If paid before 14:00

Part no. 4G0145910B

Audi A4 B8 A5 8T 2.0 TDI Water Coolant Pipe Hose Line 4G0145910B

PLN 61.95

Free delivery: Aug 03

If paid before 14:00

Part no. 059121511CT

Audi Q7 4M Q8 Mk2 Water Coolant Hose Line Tube Pipe 3.0 Diesel 059121511CT

PLN 332.95

Free delivery: Aug 3 – 4

If paid before 14:00

Part no. 1K0122101KR

Audi TT 8J MK2 Water Hose Cooling Coolant Radiator Pipe Line 1K0122101KR

PLN 75.95

Free delivery: Aug 03

If paid before 14:00

Part no. 079121036C

Audi RS4 RS5 B8 8T Engine Coolant Hose Pipe 4.2 V8 CFSA 079121036C

PLN 85.95

Free delivery: Aug 03

If paid before 14:00

Part no. 1K0121157BJ

Audi A4 B7 2.0 TDI Diesel Water Hose Cooling Coolant Pipe Line 1K0121157BJ

PLN 56.95

Delivery: Aug 03

If paid before 14:00

Part no. 8E0121049AC

Audi A4 B7 Water Hose Cooling Radiator Coolant Pipe Line 2.0 Diesel 8E0121049L

PLN 142.95

Free delivery: Aug 03

If paid before 14:00

Part no. 03L121011G

Audi A3 8P TT 8J VW Golf Mk5 Mk6 Water Coolant Pump 2.0 TDI 03L121011G

PLN 75.95

Free delivery: Aug 03

If paid before 14:00

Part no. 4G0816743AP

Audi S6 C7 A7 Refrigerant Hose Pipe Line 4G0816743AP

PLN 284.95

Free delivery: Aug 03

If paid before 14:00

Part no. 059121737AR

Audi A6 C8 A7 4G Q7 4M Coolant Control Regulating Valve 3.0 Diesel 059121737AR

PLN 170.95

Free delivery: Aug 03

If paid before 14:00

Part no. 8K0819374Q-1

Audi A5 8T Water Hose Cooling Radiator Coolant Pipe Line 8K0819374Q

PLN 123.95

Free delivery: Aug 03

If paid before 14:00

Part no. 3C0122101BM-1

Audi A3 8P Water Coolant Pipe Line Hose Cooling Unit 2.0 TDI 3C0122101BM

PLN 61.95

Free delivery: Aug 03

If paid before 14:00

Part no. 03C121111T

Audi A1 8X 1.4 TSI Petrol Engine Water Coolant Thermostat Housing 03C121111T

PLN 75.95

Free delivery: Aug 03

If paid before 14:00

Part no. 8K0133889B

Audi RS4 B8 4.0 FSI CFSA Petrol Coolant Hose Upper Top Left O/S 8K0133889B

PLN 75.95

Free delivery: Aug 03

If paid before 14:00

Part no. 6C0122447K

Audi A1 8X Polo 6C Water Coolant Hose Pipe 1.4 TSI TFSI 6C0122447K

PLN 51.95

Delivery: Aug 03

If paid before 14:00

Part no. 8W0122055CA

Audi A5 F5 Engine Water Coolant Hose Pipe Line Water Coolant 8W0122055CA

PLN 113.95

Free delivery: Aug 03

If paid before 14:00

Part no. 05L122157CG

Audi A4 B9 A5 F5 Engine Cooling Coolant Pipe Line Hose 2.0 TDI 05L122157CG

PLN 94.95

Free delivery: Aug 03

If paid before 14:00

Part no. 06F121056C

Audi A1 8X A3 8P TT 8J VW Golf Mk5 Water Coolant Hose Pipe Line 06F121056C

PLN 66.95

Free delivery: Aug 03

If paid before 14:00

Part no. 6C0121407

Audi A1 8X 1.6 TDI Expansion Tank Water Coolant Bottle Reservoir 6C0121407

PLN 61.95

Free delivery: Aug 03

If paid before 14:00

Part no. 06L145778H

Audi A5 8T Oil Feed Hose Pipe Line 2.0 TFSI Petrol Engine 06L145778H

PLN 42.95

Delivery: Aug 03

If paid before 14:00

Part no. 8W0122055BD

Audi A4 B9 A5 F5 Water Coolant Radiator Pipe Hose Line 3.0 TDI 8W0122055BD

PLN 94.95

Free delivery: Aug 03

If paid before 14:00

Part no. 06L145735H

Audi Q5 FY Oil Return Hose Pipe Line 2.0 TFSI 06L145735H

PLN 94.95

Free delivery: Aug 03

If paid before 14:00

Part no. 04L121071G

Audi A4 B9 2.0 TDI DETA Diesel Water Coolant Hose Pipe Tube Line 04L121071G

PLN 61.95

Free delivery: Aug 03

If paid before 14:00

Part no. 079121102F

Audi S5 8T Engine Water Coolant Rubber Pipe Hose 4.2 FSI 079121102F

PLN 42.95

Delivery: Aug 03

If paid before 14:00

Part no. 06H121601N

Audi A4 B9 A5 8T Additional Water Pump Engine Coolant Unit 06H121601N

PLN 61.95

Free delivery: Aug 03

If paid before 14:00

Part no. 1K0122109AL

Audi A5 8T Engine Water Coolant Pipe Cooling Hose Line 2.0 Petrol 1K0122109AL

PLN 42.95

Delivery: Aug 03

If paid before 14:00

Part no. 4G0145919J

Audi A6 C7 A7 S7 4G Water Pipe Hose Engine Cooling Coolant Unit Line 4G0145919J

PLN 123.95

Free delivery: Aug 03

If paid before 14:00

Part no. 8J0121124A

Audi RS3 8P Gearbox Oil Cooler Coolant Pipe Hose Line 2.5 TFSI CEPA 8J0121124A

PLN 184.95

Free delivery: Aug 03

If paid before 14:00

Part no. 4G0819377Q

Audi A6 C7 4.0 TFSI CRDB Coolant Hose Pipe Tube 4G0819377Q

PLN 66.95

Free delivery: Aug 03

If paid before 14:00

Part no. 059121071DE

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

PLN 42.95

Delivery: Aug 03

If paid before 14:00

Part no. 059121598L

Audi A7 4G Twin Turbo Coolant Feed Pipe Hose Line 3.0 TDI CGQB 059121598R

PLN 142.95

Free delivery: Aug 03

If paid before 14:00

Part no. 2Q0121407B

Audi A1 GB VW Polo Taigo Coolant Expansion Tank Bottle Reservoir 2Q0121407B

PLN 51.95

Delivery: Aug 03

If paid before 14:00

Part no. 03L121121A

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

PLN 46.95

Delivery: Aug 03

If paid before 14:00

Part no. 7L8121051G

Audi Q7 Engine Cooling Radiator Coolant Hose Pipe 3.0 TDI 7L8121051G

PLN 208.95

Free delivery: Aug 03

If paid before 14:00

Part no. 8K0121207A-5

Audi A4 B8 Diesel Engine Cooling Radiator Double Coolant Fan Motor 8K0121207A

PLN 218.95

Free delivery: Aug 3 – 4

If paid before 14:00

Part no. 059121507M

Audi A4 S4 8K A5 S5 8T Engine Coolant Pipe Hose Tube Line 059121507M

PLN 46.95

Delivery: Aug 03

If paid before 14:00

Part no. 03N115389H-1

Audi A4 B8 A5 8T Q5 8R Oil Filter Housing Cover 2.0 TDI 03N115389H

PLN 142.95

Free delivery: Aug 03

If paid before 14:00

Part no. 04L121058AM

VW Tiguan 5N Water Hose Cooling Coolant Pipe Line 2.0 TDI Diesel 04L121058AM

PLN 42.95

Delivery: Aug 03

If paid before 14:00

Part no. 06K145778K

Audi Q3 2.0 TFSI CULB Oil Pipe Line Tube Hose 06K145778K

PLN 42.95

Delivery: Aug 03

If paid before 14:00

Part no. 05L121011D-2

VW Volkswagen Golf CD1 Engine Coolant Water Pump DTSB 2.0 TDI Diesel 01Q220802RT

PLN 617.95

Free delivery: Aug 03

If paid before 14:00

Part no. 8K0819334BB

Audi A4 B8 2.0 TDI CNHC Water Coolant Hose Line Pipe 8K0819334BB

PLN 61.95

Free delivery: Aug 03

If paid before 14:00

Part no. 8E0121044N

Audi A4 S Line Radiator Coolant Hose Line Pipe Tube Water Cooler 8E0121044N

PLN 237.95

Free delivery: Aug 03

If paid before 14:00

Part no. 059131425A

Audi Q5 8R Water Cooling Coolant Pipe Line Connector Bracket 059131425A

PLN 94.95

Free delivery: Aug 03

If paid before 14:00

Part no. 4K0145963C

Audi A6 C8 Water Coolant Pipe Hose Line 50 TFSIe 4K0145963C

PLN 113.95

Free delivery: Aug 03

If paid before 14:00

Part no. 079121013

Audi S7 4G Water Pump Coolant Cooling Unit 079121013

PLN 332.95

Free delivery: Aug 03

If paid before 14:00

Part no. 4G0122445L

Audi A6 C7 A7 4G Coolant Cooling Pipe Hose Line Petrol Engine 4G0122445L

PLN 42.95

Delivery: Aug 03

If paid before 14:00

Part no. 8K0121207B-3

Audi A5 8T Engine Cooling Radiator Coolant Fan Air Flap Ring AD1261 993332N

PLN 113.95

Free delivery: Aug 03

If paid before 14:00

Part no. 5WA907527A

Audi A3 8Y Volkswagen VW Golf Mk8 Interior Temperature Sensor Unit 5WA907527A

PLN 46.95

Delivery: Aug 03

If paid before 14:00

Part no. 04L122157BC

Audi A5 8T Heater Water Cooling Coolant Pipe Hose Line 04L122157BC

PLN 94.95

Free delivery: Aug 03

If paid before 14:00

Part no. 06M121075L

Audi A4 B9 A5 S5 F5 Water Hose Cooling Radiator Coolant Pipe 3.0 TFSI 06M121075L

PLN 42.95

Delivery: Aug 03

If paid before 14:00

Part no. 1K0121251AB

Audi TT 8N Coolant Radiator Engine Cooling Unit Radiator Cooler 1K0121251AB

PLN 123.95

Free delivery: Aug 3 – 4

If paid before 14:00

Part no. 6R0121063

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

PLN 42.95

Delivery: Aug 03

If paid before 14:00

Part no. 059121064D

Audi A5 8T Water Hose Cooling Coolant Radiator Pipe Line 059121070E

PLN 56.95

Delivery: Aug 03

If paid before 14:00

Part no. 8J0121157A

Audi TT TTS 8J Engine Coolant Hose Tube Line Quick Coupling 8J0121157A Automatic

PLN 142.95

Free delivery: Aug 03

If paid before 14:00

Part no. 1J0121403B

Audi TT 8N Coolant Expansion Header Tank Bottle Reservoir Cap 1J0121403B

PLN 42.95

Delivery: Aug 03

If paid before 14:00

Part no. 06F121065J

Audi A3 8P TT 8J VW Golf MK5 Coolant Water Pipe Hose Line 2.0 TFSI 06F121065J

PLN 56.95

Delivery: Aug 03

If paid before 14:00

Part no. 04L122157BJ

Audi A5 S5 8T A6 S6 4G Engine Coolant Hose Tube Line Pipe 2.0 TDI 04L122157BJ

PLN 113.95

Free delivery: Aug 03

If paid before 14:00

Part no. 1K0121407A

Audi A3 8P Expansion Tank Header Coolant Reservoir Bottle 1K0121407A

PLN 47.95

Delivery: Aug 03

If paid before 14:00

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