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.

More information

Find it faster

Match to your vehicle

Make

Audi A4 B7 2.0 TDI Water Hose Radiator Coolant Pipe Line 03G121071A

Product currently unavailable

Part no. 7L0121407F

Audi Q7 4L Radiator Expansion Overflow Reservoir Tank Bottle 7L0121407F

Product currently unavailable

Part no. RHD-8W2122109E

Water Cooling Hose Audi A4 B9 A5 F5 Radiator Coolant Pipe Line 8W2122109E

Product currently unavailable

Part no. 3C0122101BM-1

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

Product currently unavailable

Part no. 07K965561B

Audi RS3 8Y Auxiliary Additional Electric Water Pump Unit 2.5 Petrol 07K965561B

Product currently unavailable

Part no. 04C133320F

Audi A1 8X Fuel Injection Line Pressure Pipe Rail Injector 1.0 TFSI 04C133320F

Product currently unavailable

Part no. 06E121045Q

Audi A4 S4 B8 3.0 TFSI Water Hose Radiator Coolant Pipe Line Tube 06E121045Q

Product currently unavailable

Part no. 8K1819371AC

Audi A4 B8 Water Coolant Hose Tube Pipe Line 2.0 TDI Diesel 8K1819350AC

Product currently unavailable

Part no. 06B121111K

Audi A4 B7 1.8T Coolant Thermostat Regulator Housing 06B121111K

Product currently unavailable

Part no. 7L6121058AR

Audi Q7 4L VW Touareg Engine Coolant Hose Pipe Tube Line 7L6121058AR

Product currently unavailable

Part no. 4L0117336B

Audi Q7 4L Intercooler Air Guide Panel Duct Right O/S 4L0117336B

Product currently unavailable

Part no. 059103171EC

Audi A7 4G 3.0 TDI Quattro Engine Covering Spacer Plate 059103171EC

Product currently unavailable

Audi A6 C8 3.0 TDI Engine Coolant Pipe Water Hose Cooling Line Tube 4K0819374R

-5%

Part no. 4K0819374R

Audi A6 C8 3.0 TDI Engine Coolant Pipe Water Hose Cooling Line Tube 4K0819374R

Product currently unavailable

Part no. 1K0121087H

Audi TT 8J Coolant Flange Pipe Hose Line Tube 2.0 FSI Petrol 1K0121087H

Product currently unavailable

Part no. 079121481P

Audi RS4 B8 RS5 8T Engine Cooling Pipe Line Hose 4.2 V8 Petrol 079121481P

Product currently unavailable

Part no. 4L0815071

Audi Q7 4L Webasto Auxiliary Water Heater Pump 4L0815071

Product currently unavailable

Part no. 4H0121003M

Audi A6 C7 Engine Cooling Double Coolant Fan Motor Shroud 3.0 Diesel 4H0121003M

Product currently unavailable

Part no. 06H121497F

Audi A4 B8 A5 8T Turbocharger Coolant Feed Pipe Hose Line 1.8 TFSI 06H121497F

Product currently unavailable

Part no. 059906088BB

Audi A4 B8 A5 8T A6 C7 A7 4G 3.0 TDI Exhaust Gas Temperature Sensor 059906088BB

Product currently unavailable

Part no. 8D0121200

Audi A4 B7 A6 C6 A8 D3 Radiator Retaining Peg Clip Mount Bracket 8D0121200

Product currently unavailable

Part no. 7L0959455E

Audi Q7 4L 4.2 TDi BTR 4.2 FSI BAR Radiator Fan Blades Motor 7L0959455E

Product currently unavailable

Part no. 8K0121081T

Audi S5 8T Water Hose Overflow Tank Coolant Pipe Line 4.2 TFSI 8K0121081T

Product currently unavailable

Part no. 4F0121251AE

Audi A6 C6 FL Water Hose Radiator Coolant Cooling 4F0121251AE

Product currently unavailable

Part no. 2Q0122073H

Audi A1 GB Cooling Coolant Hose Pipe Line 1.0 Petrol Engine 2Q0122073H

Product currently unavailable

Part no. 1K0122073S

Audi A4 B7 Water Hose Cooling Coolant Radiator Pipe Line 1K0122073S

Product currently unavailable

Part no. 7L0959455G

Audi Q7 4L 3.0 TDI Diesel Engine Cooling Radiator Fan Cooler 7L0959455G

Product currently unavailable

Part no. 1K0121049CH

Audi A3 8P Water Coolant Pipe Hose Line 1.4 TFSI CAXC 1K0121049CH

Product currently unavailable

Part no. 1K0121251BK

Audi A3 8P Coolant Radiator Engine Cooling Unit 2.0 Diesel BMN BUY 1K0121251BK

Product currently unavailable

Part no. 8K0805201-1

Audi Q5 8R Coolant Mounting Radiator Holder Bracket Set 8K0805201

Product currently unavailable

Part no. 059117021R

Audi A8L D4 3.0 TDI CBTA Engine Oil Cooler 059117021R

Product currently unavailable

Part no. 059121065BK

Audi A5 8T Water Hose Cooling Coolant Radiator Pipe Line 2.7 TDI 059121070M

Product currently unavailable

Part no. 80A122073C

Audi Q5 FY Coolant Water Hose Line Tube Pipe 80A122073C

Product currently unavailable

Part no. 03L121157AJ

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

Product currently unavailable

Part no. 8W0819342L-1

Audi A5 F5 Water Return Coolant Pipe Hose Flow Line 8W0819342L

Product currently unavailable

Part no. 1K0122447FR

Volkswagen Audi Seat Skoda Water Hose Radiator Coolant Pipe Line 1K0122447FR

Product currently unavailable

Part no. 8E0959455H-1

Audi Rs4 B7 4.2 Petrol Engine Cooling Radiator Coolant Fan Right O/S 8E0959455H

Product currently unavailable

Audi A4 B8 2.0 TDI Water Hose Radiator Coolant Pipe Line 03L122157M

-5%

Part no. 03L122157M

Audi A4 B8 2.0 TDI Water Hose Radiator Coolant Pipe Line 03L122157M

Product currently unavailable

Part no. 8S0201801

Audi TT FV Petrol Activated Charcoal Tank Reservoir 8S0201801

Product currently unavailable

Part no. 4F0121107AN

Audi A6 C6 Coolant Breather Vent Pipe Hose 2.0 TDI Diesel 4F0121107AN

Product currently unavailable

Part no. 6C0122101AM

Audi A1 8X 1.6 TDI Diesel Water Coolant Pipe Hose Cooling Line 6C0122101AM

Product currently unavailable

Part no. 03L122157Q-1

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

Product currently unavailable

Part no. 059121004G

Audi A5 8T 3.0 TDI CCWA Diesel Auxiliary Additional Water Pump 059121004G

Product currently unavailable

Part no. 8V0121124

Audi RS3 8V Engine Oil Coolant Hose Pipe Line Tube 2.5 TFSI 8V0121124

Product currently unavailable

Part no. 04L121058AM

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

Product currently unavailable

Part no. 05L121111P

Audi A4 B9 A5 F5 Engine Coolant Thermostat Housing Diesel 2.0 TDI 05L121111P

Product currently unavailable

Part no. 079121085N

Audi S7 4G8 Coolant Pipe 4.0 TFSI Petrol Right O/S Cooler Water Hose 079121085N

Product currently unavailable

Part no. 07L121065J

Coolant Hose Audi S8 A8 D3 A6 C6 5.2 Petrol FSI Left N/S Water Pipe 07L121065J

Product currently unavailable

Part no. 05L121011D-1

Audi A4 B9 Q5 FY A7 C8 Water Pump Adapter Lead Cable Wiring 2.0 TDI 05L907284

Product currently unavailable

Part no. 059129089

Audi Q7 4L Water Pipe Hose Line Engine Cooling Coolant Unit Hose 059129089

Product currently unavailable

Part no. 4F0121049E

Audi A4 B7 A6 C7 Engine Water Coolant Pipe Hose Line 2.0 TFSI 4F0121049E

Product currently unavailable

Part no. 04L131525C

Audi A4 B9 A5 8T Q5 FY Intercooler Hose Pipe Line 04L131525C

Product currently unavailable

Part no. 06M121083J

Audi A4 S4 B9 A5 S5 F5 3.0 TFSI Water Coolant Pipe Hose Cooling Line 06M121083J

Product currently unavailable

Part no. 7L6122051AC

Audi Q7 4L Engine Coolant Hose Tube Line Pipe Quick Release Coupling 7L6122051AC

Product currently unavailable

Part no. 4G0145923C

Audi A7 4G8 Engine Coolant Hose Tube Line Pipe 3.0 TFSI Quattro CGWB 4G0145923C

Product currently unavailable

Part no. 8K0317818DL

Audi A5 8T Automatic Gearbox Oil Pressure Line 8K0317817DF

Product currently unavailable

Part no. 80A819370B

Audi Q5 FY 2.0 TFSI Engine Water Coolant Pipe Hose Line 80A819370B

Product currently unavailable

Part no. 8K0819345H

Audi A4 B8 Coolant Cooling Engine Pipe Hose Line Radiator 8K0819345H

Product currently unavailable

Part no. 8R0121081AD

Audi Q5 8R 2.0 TDI Expansion Bottle Tank Radiator Hose Line Pipe 8R0121081AD

Product currently unavailable

Part no. 059121031H

Audi Q5 8R 3.0 TDI Diesel Coolant Pump Pulley Water Pump Wheel 059121031H

Product currently unavailable

Part no. 079121115E

Audi RS4 B7 4.2 FSI Water Pump Thermostat Coolant Housing 079121115E

Product currently unavailable

Part no. 06K121497AM

Audi S3 8V VW Golf Mk7 Cooling Water Hose Coolant Pipe Line 2.0 TFSI 06K121497AM

Product currently unavailable

Part no. 8E0121207E-1

Audi A4 B6 B7 Radiator Fan Engine Motor Cooling Coolant Unit 8E0121207E

Product currently unavailable

Part no. 4F0121403M

Audi A6 C6 Coolant Expansion Tank Reservoir Bottle Tank 4F0121403M

Product currently unavailable

Part no. 5QF121049AP

Audi Q3 F3 VW Tiguan Mk2 Engine Water Coolant Pipe Hose 2.0 TDI 5QF121049AP

Product currently unavailable

Part no. 07K103207

Oil Separator Pipe Audi RS3 8V TTRS 8S 2.5 TFSI Breather Hose Line 07K103207

Product currently unavailable

Part no. 6R0122051BP

Audi Seat Skoda VW Radiator Coolant Hose Pipe Line 2.0 TFSI 6R0122051BP

Product currently unavailable

Part no. 8E0121049N

Audi A4 B7 Water Hose Cooling Radiator Coolant Pipe Line 8E0121049N

Product currently unavailable

Part no. 05L121111H

Audi A4 B9 A5 F5 Engine Coolant Thermostat Housing Diesel 2.0 TDI 05L121111H

Product currently unavailable

Audi SQ5 8R 3.0 TDI CGQB Radiator Water Hose Line Tube Pipe 059121065DT

-15%

Part no. 059121065DT

Audi SQ5 8R 3.0 TDI CGQB Radiator Water Hose Line Tube Pipe 059121065DT

Product currently unavailable

Part no. 8S0121283B

Audi TT FV Radiator Fan Air Guide Mount Bracket Left N/S 8S0121283B

Product currently unavailable

Part no. 059121465A

Audi A7 4G 3.0 TDI Quattro Water Hose Cooling Radiator Pipe Line 059121465A

Product currently unavailable

Part no. 8R0121081C

Audi Q5 8R 3.0 TDI Water Hose Cooling Radiator Coolant Pipe Line 8R0121081C

Product currently unavailable

Part no. 4G0819377AA

Audi A7 4G Water Hose Cooling Coolant Pipe Line 4G0819377AA

Product currently unavailable

Part no. 8K0121036F

Audi A4 B8 Water Hose Radiator Coolant Pipe Line 1.8 2.0 Petrol 8K0121036F

Product currently unavailable

Part no. 059121016G

Audi A6 C7 A7 4G Q7 4M Water Coolant Pump 3.0 TDI 059121016G

Product currently unavailable

Part no. 8E0121101T-1

Audi A4 B7 Upper Radiator Coolant Hose Pipe Line 3.2 AUK 8E0121101T

Product currently unavailable

Part no. 057121598L

Audi Q7 4L 4.2 TDI Alternator Turbo Coolant Pipe Hose Right O/S 057121598L

Product currently unavailable

Part no. 06H121026AB

Water Pump Audi A3 8P A5 8T 2.0 TFSI Petrol Engine Coolant Unit 06H121026AB

Product currently unavailable

Part no. 5Q0121251HS

Audi A3 8V Q3 F3 VW Golf 5G CD BQ Engine Cooling Radiator 2.0 Diesel 5Q0121251HS

Product currently unavailable

Part no. 8W0819342L

Audi A5 F5 Water Return Coolant Pipe Hose Line 8W0819342L

Product currently unavailable

Audi TT 8J Volkswagen Passat Water Coolant Hose Pipe Line 3AA122157

-5%

Part no. 3AA122157

Audi TT 8J Volkswagen Passat Water Coolant Hose Pipe Line 3AA122157

Product currently unavailable

Part no. 8J0121073E

Audi TT 8J 2.5 TFSI Water Coolant Pipe Hose Line 8J0121073E

Product currently unavailable

Part no. 06A121103

Audi A3 S3 8L Coolant Hose Pipe Water Pipe Engine Cooling 06A121103

Product currently unavailable

Part no. 03G121157G

Audi A4 B7 2.0 TDI Water Hose Radiator Coolant Pipe Line 03G121157G

Product currently unavailable

Part no. 06A121065CB

Audi A3 8P Coolant Hose Water Pipe Cooling Line 1.6 Petrol 06A121065CB

Product currently unavailable

Part no. 8K1819373AC

Audi A4 B8 Engine Coolant Hose Tube Pipe Line S5000223

Product currently unavailable

Part no. 079117315D

Audi RS4 B8 Engine Oil Cooler Pressure Line Pipe Hose 4.2 FSI 079117315D

Product currently unavailable

Part no. 8E0145738D

Audi A4 B7 3.0 TDI BKN Turbo Intercooler Pipe Hose Line Tube 8E0145738D

Product currently unavailable

Part no. 07K121499K

Audi RS3 8Y Water Pipe Engine Cooling Coolant Hose Line 2.5 TFSI 07K121499K

Product currently unavailable

Audi A3 8P VW Golf MK6 Engine Coolant Water Pump 1.8 TFSI Petrol 06H121026N

-40%

Part no. 06H121026N-1

Audi A3 8P VW Golf MK6 Engine Coolant Water Pump 1.8 TFSI Petrol 06H121026N

Product currently unavailable

Part no. 8J0121157A

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

Product currently unavailable

Part no. 03G121065AE

Audi A3 8P Seat Leon Mk2 2.0 TDI Water Coolant Cooling Pipe Hose Line 03G121071A

Product currently unavailable

Part no. 8W0819342B

Audi A4 S4 B9 8W A5 S5 F5 Heater Water Coolant Hose Pipe Line 8W0819342B

Product currently unavailable

Part no. 8K0145923B

Audi A4 S4 B8 A5 S5 8T Radiator Coolant Hose Tube Pipe Line 3.0 TFSI 8K0145923B

Product currently unavailable

Part no. 4G0122109AN

Audi A6 C7 A7 4G Water Coolant Pipe Hose Line 1.8 2.0 TFSI 4G0122109AN

Product currently unavailable

Part no. 8W0121030R-1

Audi A4 B9 A5 F5 Water Coolant Hose Pipe Line 2.0 TDI 8W0121030R

Product currently unavailable

Part no. 04L121157S

Audi A4 B8 2.0 TDI Water Coolant Pipe Hose Line Tube 04L121157S

Product currently unavailable

Part no. 05E121111AB

Audi A1 GB Seat Ibiza FR Water Coolant Pump Petrol Engine 1.0 TSI 05E121111AB

Product currently unavailable

Part no. 057121163C

Audi A8 D4 Q7 4L Engine Water Coolant Hose Pipe Line 4.2 TDI V8 057121163C

Product currently unavailable

...

Showing 1189-1287 of 1435 products