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 A1 S1 8X GB VW Polo 6R Skoda Fabia 5J Radiator Cooling Fan Ring 6R0121217

€23.95

Part no. 8E0121251L

Audi A4 B6 B7 Coolant Radiator Rad Cooling Unit 1.9 TDi 8E0121251L

€32.95

Part no. 079115201C

Audi RS4 B8 RS5 8T Oil Cooler Line Thermostat 4.2 FSI 079115201C

€56.95

Part no. 1K0122291H

Audi A3 8P VW Golf MK5 Caddy 2K Water Coolant Hose Pipe Line 2.0 TDi 1K0122291H

€23.95

Part no. 4H0906088AA

Audi A8 D4 Temperature Sensor Diesel Engine Exhaust Gas Sensor Probe 4H0906088AA

€37.95

Part no. 06A121065CQ

Audi A3 8P VW Golf Mk5 Coolant Hose Water Pipe Cooling 1.6 Petrol 06A121065CQ

€56.95

Part no. 06L145778M

Audi Q5 FY Oil Feed Hose Pipe Line 2.0 TFSI Petrol Engine 06L145778M

€23.95

Part no. 5N0121064H

Audi Q3 8U Volkswagen Tiguan 5N Coolant Hose Metal Pipe Radiator 5N0121064H

€37.95

Part no. 8E0121101C

Audi A4 B7 1.9 TDI Water Pipe Engine Cooling Radiator Coolant Hose 8E0121101C

€23.95

Part no. 03L906088BT

Audi A4 B8 Temperature Sensor Diesel Engine Exhaust Gas Sensor Probe 03L906088BT

€23.95

Part no. 06L121081K

Audi Q5 FY 2.0 TFSI Water Cooling Line Vacuum Breather Pipe Hose 06L121081K

€32.95

Part no. 8K0121207A-5

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

€28.95

Part no. 1K0121096BH

Audi A3 8P Water Hose Cooling Radiator Coolant Pipe Line 1K0121096BH

€23.95

Part no. 8K0819332M

Audi A4 B8 Water Coolant Pipe Hose Line Tube 2.0 TDI CNHC 8K0819332M

€37.95

Part no. 4H0906088AB

Audi A8 D4 Temperature Sensor Diesel Engine Exhaust Gas Sensor Probe 4H0906088AB

€23.95

Part no. 06J117021J

Audi A3 8P TT 8J A4 B7 Oil Cooler 1.8 2.0 TFSI Petrol Engine 06J117021J

€23.95

Part no. 03L122157Q

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

€23.95

Part no. 079131605BB

Audi S6 C7 S7 4G Secondary Air Pump Connecting Pipe Line Hose 079131605BB

€28.95

Part no. 4G0121403AG

Audi A6 C7 A8 D4 Coolant Expansion Header Tank Reservoir 4G0121403AG

€23.95

Part no. 06H121026AG

Audi A3 8P VW Passat B7 Water Pump Thermostat Coolant Regulator 06H121026AG

€51.95

Part no. 8E0265381

Audi A3 8V 35 TDI Water Coolant Pipe Hose Line 8E0265381

€23.95

Part no. 059121398B

Audi A4 B8 A5 8T Q7 4L Coolant Hose Line Pipe Tube 3.0 TDI Diesel 059121398B

€28.95

Part no. 8K0959455F

Engine Cooling Radiator Audi A4 B8 Q5 8R Coolant Fan Motor 200W 8K0959455F

€56.95

Part no. 06L145735H

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

€23.95

Part no. 8R0121283L

Audi A4 B8 A5 8T Q5 8R Radiator Air Guide Channel Left N/S 8R0121283L

€23.95

Part no. 06E121044D

Audi S4 B8 Engine Coolant Pipe Water Hose Line 3.0 TFSI CAKA 06E121044D

€23.95

Part no. 8P0122051

Audi RSQ3 8U Cooling System Water Coolant Hose Pipe Line 2.5 TFSI 8P0122051

€70.95

Part no. 06J121132G

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

€28.95

Part no. 5Q0122101DQ

VW Golf Mk7 Audi A3 8V Seat Leon Radiator Water Coolant Pipe Hose 5Q0122101DQ

€23.95

Part no. 059122445F

Audi Q7 Q8 4M 3.0 TDI Engine Coolant Hose Line Tube Pipe 059122445F

€23.95

Part no. 8W0121674B

Audi A4 B9 Radiator Air Guide Duct Channel Cover Panel Right O/S 8W0121674B

€23.95

Part no. 7L0965561L-1

Audi A4 B7 2.0 TDI Quattro Auxiliary Additional Water Pump 7L0965561L

€23.95

Part no. 8K0145919C

Audi A4 B8 2.0 TDI CNHC Engine Water Coolant Hose Pipe Line 8K0145919C

€56.95

Part no. 06F129101R

Audi A3 8P TT 8J VW Golf GTI 2.0 TFSI Breather Valve Oil Separator 06F129101R

€23.95

Part no. 4B0907659A

Audi A3 8P Air Quality Sensor 4B0907659A

€23.95

Part no. 8K0121081P

Audi A4 B8 2.0 TDI CAGA Radiator Water Coolant Pipe Hose Tube Line 8K0121081P

€23.95

Part no. 06J121075F

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

€28.95

Part no. 06K121059K

Audi Q3 8U VW Beetle 5C Water Coolant Hose Pipe Line 06K121059K

€28.95

Part no. 8T0941717D-1

Audi A4 RS4 B8 Headlight Lamp Drain Hose Pipe Line Tube Left N/S 8T0941717D

€23.95

Part no. 8W0121448H

Audi A5 F5 2.0 TDI DEZE Water Coolant Hose Line Pipe Tube 8W0121448H

€23.95

Part no. 059121064D-1

Audi A5 8T Water Hose Cooling Coolant Radiator Pipe Line 3.0 TDI 059121070J

€23.95

Part no. 03L121031B

Audi A3 8P 2.0 TDI CFFB Diesel Coolant Water Pump 03L121031B

€23.95

Part no. 8K0819334BB

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

€23.95

Part no. 6R0122073H

Audi A1 S1 8X VW Polo 6R Seat Ibiza 6P Engine Water Coolant Hose 6R0122073H

€51.95

Part no. 06D121082B

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

€23.95

Part no. 8K0121055N

Audi A4 B8 A5 8T 1.8 2.0 TFSI Petrol Engine Water Coolant Pipe Hose 8K0121055N

€32.95

Part no. 8K0121051F

Audi A4 B8 A5 8T Radiator Water Coolant Pipe Hose Line Petrol 8K0121051F

€23.95

Part no. 83A816738

Audi Q3 RSQ3 F3 Petrol Hose Air Con A/C Intercooler Pipe Line 83A816738

€56.95

Part no. 06J133781BE

Audi TT 8J Water Hose Cooling Radiator Coolant Pipe Line 06J133781BE

€23.95

Part no. 03G906088AT

Audi A3 8P Exhaust Gas Temperature Sensor 03G906088AT

€23.95

Part no. 03L121157AQ

Audi A4 B8 A5 8T 2.0 TDI Water Hose Cooling Radiator Pipe Line 03L121157AQ

€23.95

Part no. 04L121157

Audi A4 B8 A6 C7 Water Coolant Pipe Hose Line Tube Right O/S 2.0 TDI 04L121157

€23.95

Part no. 6C0122109E

Audi A1 8X 1.6 TDI Diesel Engine Water Coolant Pipe Hose Line Tube 6C0122109E

€23.95

Part no. 1K0145832AH

Audi A3 8P 2.0 TDI Convertible Intercooler Air Pipe Hose Left N/S 1K0145832AH

€56.95

Part no. 8K0121055L-2

Audi A4 B8 Water Hose Cooling Coolant Radiator Pipe Line Diesel 8K0121055L

€28.95

Part no. 4G0121485BE

Audi A6 C7 A7 4G8 Water Radiator Coolant Pipe Hose Tube Line Diesel 4G0121485BE

€32.95

Part no. 5Q0121599AA

Audi A3 S3 8V Auxiliary Water Pump Coolant Circulation Cooling Unit 5Q0121599AA

€66.95

Part no. 04L121065AN

Audi A5 8T Water Coolant Pipe Hose Line Tube 04L121065AN

€23.95

Part no. 8T0941717D

Audi A4 RS4 B8 Headlight Lamp Drain Hose Pipe Line Tube Left N/S 8T0941717D

€23.95

Part no. 07K121115D

Audi RSQ3 8U Thermostat Housing Coolant Unit 2.5 TFSI Petrol 07K121115D

€142.95

Part no. 8W0819350G

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

€23.95

Part no. 5Q0122096K

Audi Q7 4M S3 8V Auxiliary Electric Additional Water Pump Coolant 5Q0122096K

€37.95

Part no. 06L121012L

Audi A4 B9 Volkswagen Golf 8 2.0 TFSI Thermostat Coolant Water Pump 06L121012L

€75.95

Part no. 06E121083A

Audi A4 S4 B8 S5 8T 8F 3.0 TFSI Water Hose Coolant Pipe Line Tube 06E121083A

€32.95

Part no. 04L121111H-1

Audi A4 B8 A5 F5 TT FV Thermostat Coolant Housing Valve 2.0 TDI 04L121111H

€23.95

Part no. 4N0820541

Audi A7 C8 Q7 4M Temperature Sensor Interior Sensor 4N0820541

€23.95

Part no. 4G0121481AL

Audi A6 Avant A7 Sportback Water Coolant Hose Pipe 4G0121481AL

€37.95

Part no. 079121013

Audi S7 4G Water Pump Coolant Cooling Unit 079121013

€89.95

Part no. 04L121026AF

Audi Q2 GA Diesel Thermostat Coolant Regulator Connector Pipe Hose 04L121026AF

€28.95

Part no. 8K0121081BL

Audi A4 B8 A5 8T 2.0 TDI Radiator Water Coolant Pipe Hose Tube Line 8K0121081BL

€23.95

Part no. 8K0122293B

Audi A4 B8 Q5 8R Water Cooling Coolant Flange Pipe Hose 2.0 TDI 8K0122293B

€23.95

Part no. 03G145771Q

Audi A3 8P Diesel Engine Supply Feed Oil Hose Line Tube Pipe 03G145771Q

€37.95

Part no. 06E121546

Audi S4 B8 A4 B8 S5 8T Water Coolant Hose Pipe Line 3.0 TFSI 06E121546

€23.95

Part no. 80A145926BP

Audi Q5 FY Coolant Hose Tube Line Pipe 2.0 Diesel 80A145926BP

€23.95

Part no. 7L8121051G

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

€47.95

Part no. 04E121600AR

Audi A1 8X Skoda Octavia Mk3 Coolant Cooling Water Pump 1.0 TSI TFSI 04E121600AR

€42.95

Part no. 079121678K

Audi S6 C7 S7 4G Engine Coolant Thermostat Resonator Valve 4.0 TFSI 079121678K

€146.95

Part no. 06E121545

Audi S4 B8 A4 B8 S5 8T Water Coolant Hose Pipe Line 3.0 TFSI 06E121545

€23.95

Part no. 8W0819334AE

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

€23.95

Part no. 5Q0121070BQ

Audi S3 8V Water Hose Engine Coolant Cooling Pipe Line 5Q0121070BQ

€23.95

Part no. 04L121026Q

Audi TT FV A3 8V Water Pump Thermostat Housing Pipe Connector 04L121026Q

€23.95

Part no. 3C0122073EG

Audi TT Mk2 8J Water Coolant Pipe Hose Line 2.0 TFSI 3C0122073EG

€23.95

Part no. 8W0122055BD

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

€23.95

Part no. 04L121065AK

Audi A5 8T Heater Water Cooling Coolant Pipe Hose Line 04L121065AK

€23.95

Part no. 07K121055A

Audi RS3 8P RSQ3 8U Engine Cooling System Coolant Hose Pipe 2.5 TFSI 07K121055A

€42.95

Part no. 1K0121063J

Audi TT 8J Water Coolant Hose Pipe Line Tube 1K0121063J

€23.95

Part no. 1K0122447HC

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

€23.95

Part no. 4G0317818AF

Audi RS6 C7 Oil Pipe Line Tube Hose Automatic Gearbox Transmission 4G0317818AF

€32.95

Part no. 8K0121003AD

Audi A7 4G8 Engine Cooling Radiator Twin Coolant Fan Diesel 8K0121003AD

€42.95

Part no. 4G0145919AC

Water Pipe Audi A6 C7 A7 4G 2.0 TDI Hose Engine Cooling Coolant Line 4G0145919AC

€47.95

Part no. 8R0121101J

Audi Q5 8R 2.0 TDI Coolant Water Hose Line Tube Pipe 8R0121101J

€23.95

Part no. 8K0121207B-3

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

€32.95

Part no. 04L121111H

Audi A4 B8 TT FV Thermostat Coolant Housing Valve 2.0 TDI 04L121111H

€23.95

Part no. 1K0122051AE

Audi A4 B7 Water Hose Cooling Coolant Radiator Pipe Line 1K0122051AE

€23.95

Part no. 1K0122051FE

Audi TT 8J MK2 Water Hose Cooling Coolant Radiator Pipe Line 1K0122051FE

€23.95

Part no. 8K0122101B

Audi A4 B8 A5 8T Heater Water Cooling Coolant Pipe Hose Line 3.0 TDI 8K0122101B

€37.95

Part no. 4G0121049AG

Audi A6 C7 2.0 TDI CGLC Water Radiator Coolant Pipe Hose Tube Line 4G0121049AG

€23.95

Part no. 5N0122051BD

Audi Q3 8u Engine Water Coolant Cooling Pipe Line 2.0 TFSI Petrol 5N0122051BD

€23.95

Part no. 06F121065H

Audi A3 8P TT 8J VW Golf GTI 2.0 TFSI Coolant Water Pipe Hose Line 06F121065H

€42.95

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