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 A3 8V 1.6 TDI CRKB Water Coolant Pipe Hose Line Tube 5Q0122051BJ

£47.95

Free delivery: Oct 22

If paid before 14:00

Part no. 06H121085C-1

Audi A4 B8 Water Hose Cooling Radiator Coolant Pipe Line 1.8 TFSI 06H121085C

£13.95

Free delivery: Oct 22

If paid before 14:00

Part no. 1K0122051HD-1

Audi A3 8P VW Scirocco Mk3 2.0 TDI Diesel Radiator Coolant Hose 1K0122051HD

£28.95

Free delivery: Oct 22

If paid before 14:00

Part no. 8K1819376M

Audi A4 B8 2.0 TDI Diesel Engine CAHA Coolant Hose Heater Water Line 8K1819376M

£13.95

Free delivery: Oct 22

If paid before 14:00

Part no. 06H121497F

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

£23.95

Free delivery: Oct 22

If paid before 14:00

Part no. 8E0907411

Audi S4 B7 Engine Cooling Radiator Module Carrier Trim Cover 8E0907411

£13.95

Free delivery: Oct 22

If paid before 14:00

Part no. 4M0121044B

Audi Q7 4M Water Coolant Pipe Hose Line 3.0 TDI Diesel Engine 4M0121044B

£47.95

Free delivery: Oct 22

If paid before 14:00

Part no. 8W0122445C

Audi A5 F5 Engine Water Coolant Hose Pipe Line Water Coolant 8W0122445C

£32.95

Free delivery: Oct 22

If paid before 14:00

Part no. 8W0122055CA-1

Audi A4 B9 A5 F5 Engine Water Coolant Pipe Hose Line 2.0 TDI 8W0122055CA

£42.95

Free delivery: Oct 22

If paid before 14:00

Part no. 5Q0122101CM-1

Audi A3 8V 35 TDI DFGA Water Coolant Hose Line Pipe Tube 5Q0122101CM

£13.95

Free delivery: Oct 22

If paid before 14:00

Part no. 8W0145919K

Audi A5 F5 Water Coolant Hose Line Pipe Tube 8W0145919K

£23.95

Free delivery: Oct 22

If paid before 14:00

Part no. 8W0819342Q

Audi A5 F5 Engine Water Coolant Cooling Pipe Hose Line 8W0819342Q

£13.95

Free delivery: Oct 22

If paid before 14:00

Part no. 4G0121403C

Audi RS6 C7 Expansion Overflow Coolant Reservoir Bottle Tank 4G0121403C

£13.95

Free delivery: Oct 22

If paid before 14:00

Part no. 06K121065Q

Audi TT FV Water Coolant Pipe Hose Line 06K121065Q

£13.95

Free delivery: Oct 22

If paid before 14:00

Part no. 1K0121063R

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

£13.95

Free delivery: Oct 22

If paid before 14:00

Part no. 07K121111E

Audi RS3 8Y Thermostat Housing Coolant Unit 2.5 TFSI Petrol 07K121111E

£189.95

Free delivery: Oct 23 – 30

If paid before 14:00

Part no. 5N0122051CD

Audi Q3 8U Coolant Hose Pipe Line Tube Quick Release Coupling 5N0122051CD

£28.95

Free delivery: Oct 22

If paid before 14:00

Part no. 059121016C

Audi A4 B9 A6 C7 A7 4G Q7 4M Engine Water Coolant Pump 3.0 TDI 059121016C

£56.95

Free delivery: Oct 22

If paid before 14:00

Part no. 8W0122073F

Audi A4 B9 2.0 Petrol Engine Automatic Coolant Hose Line Tube Pipe 8W0122073F

£13.95

Free delivery: Oct 22

If paid before 14:00

Part no. 06E117021J

Audi A5 S5 8T Engine Oil Cooler Heat Exchanger Unit 3.0 Petrol Engine 06E117021J

£32.95

Free delivery: Oct 22

If paid before 14:00

Part no. 4K2121214E

Audi A6 C8 Radiator Expansion Tank Reservoir Retainer Bracket Support 4K2121214E

£13.95

Free delivery: Oct 22

If paid before 14:00

Part no. 8K0145923F

Audi A4 S4 B8 S5 8T Radiator Coolant Hose Tube Pipe Line 8K0145923F

£18.95

Free delivery: Oct 22

If paid before 14:00

Part no. 1K0122073B

Audi Seat Skoda Volkswagen Water Return Coolant Pipe Hose Line 1K0122073B

£13.95

Free delivery: Oct 22

If paid before 14:00

Part no. 1K0121096BQ

Volkswagen Golf Mk6 Water Hose Cooling Radiator Coolant Pipe Line 1K0121096BQ

£13.95

Free delivery: Oct 22

If paid before 14:00

Part no. 059121065BK

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

£13.95

Free delivery: Oct 22

If paid before 14:00

Audi A4 B8 Radiator Fan Engine Motor Cooling Coolant Unit 8K0121003Q

-1%

Part no. 8K0121207B-1

Audi A4 B8 Radiator Fan Engine Motor Cooling Coolant Unit 8K0121003Q

Promo price

£42.95

£42.45

Free delivery: Oct 22

If paid before 14:00

Part no. 059121511G

Audi A5 8T Coolant Pipe Water Hose Cooling Line 2.7 TDI Diesel 059121511G

£13.95

Free delivery: Oct 22

If paid before 14:00

Part no. 8U0121485

Audi RSQ3 8U Front Water Coolant Pipe Hose Line Tube 2.5 TFSI 8U0121485

£42.95

Free delivery: Oct 23 – 30

If paid before 14:00

Part no. 8J0121447D

Audi TT 8J 2.0 Petrol Engine Coolant Pipe Hose Line Tube 8J0121447D

£13.95

Free delivery: Oct 22

If paid before 14:00

Part no. 5Q0122063

Audi A3 8V Water Coolant Pipe Radiator Hose Fluid Line 1.4 TSI Petrol 5Q0122063

£13.95

Free delivery: Oct 22

If paid before 14:00

Part no. 4G0121263

Audi RS6 RS7 Additional Water Coolant Radiator Support Carrier Mount 4G0121263

£13.95

Free delivery: Oct 22

If paid before 14:00

Part no. 8K0121030K

Audi A4 B8 Water Hose Radiator Coolant Pipe Line 1.8 2.0 Petrol 8K0121030K

£13.95

Free delivery: Oct 22

If paid before 14:00

Part no. 1K0133366BB

Audi A3 8P A4 B7 Golf Mk6 Water Coolant Pipe Hose Line 2.0 TSI 1K0133366BB

£13.95

Free delivery: Oct 22

If paid before 14:00

Part no. 5Q0121063N

Audi A3 8V 1.0 TSI Water Pipe Engine Cooling Coolant Hose Line 5Q0121063N

£23.95

Free delivery: Oct 22

If paid before 14:00

Part no. 059121445L

Audi A6 C8 Engine Cooling Coolant Water Hose Line Pipe Tube 059121445L

£13.95

Free delivery: Oct 22

If paid before 14:00

Part no. 4K0121405N

Audi A6 C8 Coolant Expansion Reservoir D Cooling Agent Tank Radiator 4K0121403

£23.95

Free delivery: Oct 22

If paid before 14:00

Part no. 059117021R

Audi A8L D4 3.0 TDI CBTA Engine Oil Cooler 059117021R

£28.95

Free delivery: Oct 22

If paid before 14:00

Part no. 06F121057C

Audi A1 8X S3 8P VW Golf R Mk5 Water Coolant Pipe Hose Line 2.0 TSI 06F121057C

£37.95

Free delivery: Oct 22

If paid before 14:00

Part no. 4G0122055AB

Audi A6 C7 A7 4G8 Radiator Coolant Water Pipe Hose Line Tube Petrol 4G0122055AB

£13.95

Free delivery: Oct 22

If paid before 14:00

Part no. 8W0121064B-1

Audi Q7 4M 3.0 TDI Engine Coolant Pipes Hoses Cooling Water Line 8W0121064B

£37.95

Free delivery: Oct 22

If paid before 14:00

Part no. 04L122157CC

Audi A4 B9 2.0 TDI Diesel Engine Coolant Hose Line Pipe Tube 04L122157CC

£23.95

Free delivery: Oct 22

If paid before 14:00

Part no. 8E0121284

Audi A4 B7 Radiator Air Duct Guide Right O/S 8E0121284AC

£13.95

Free delivery: Oct 22

If paid before 14:00

Part no. 06N121085D

Audi A4 B9 A5 F5 A6 A7 C8 Radiator Water Coolant Hose Pipe Line Left 06N121085D

£56.95

Free delivery: Oct 22

If paid before 14:00

Part no. 06A121065DP

Audi A3 8P 1.6 MPI Water Pipe Coolant Supply Metal Hose 06A121065DP

£23.95

Free delivery: Oct 22

If paid before 14:00

Part no. 06L121081AF

Audi A4 B9 A5 F5 A6 A7 C8 A8 D5 Q5 F8 Engine Coolant Hose Pipe Line 06L121081AF

£32.95

Free delivery: Oct 22

If paid before 14:00

Part no. RHD-4G2819350AE

Audi A6 S6 C7 A7 4G Engine Coolant Cooling Hose Water Pipe Line 4G2819350AD

£32.95

Free delivery: Oct 22

If paid before 14:00

Part no. 8K0121081P

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

£18.95

Free delivery: Oct 22

If paid before 14:00

Part no. 8W0121501AL

Audi S4 B9 3.0 Petrol Water Hose Cooling Coolant Pipe Line 8W0121501AL

£18.95

Free delivery: Oct 22

If paid before 14:00

Part no. 059121064D

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

£23.95

Free delivery: Oct 22

If paid before 14:00

Part no. 07K121011N-1

Audi RS3 8Y Water Pump Coolant Cooling Pump Mechanical 2.5 TFSI 07K121011N

£123.95

Free delivery: Oct 22

If paid before 14:00

Part no. 4G0121485BS

Audi A6 C7 A7 4G8 Water Radiator Coolant Pipe Hose Tube Line Petrol 4G0121485BS

£28.95

Free delivery: Oct 22

If paid before 14:00

Part no. 8K0819342L

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

£13.95

Free delivery: Oct 22

If paid before 14:00

Part no. 8W0122448AA

Water Coolant Hose Audi A4 B9 A5 F5 2.0 Petrol Line Pipe Tube 8W0122448AA

£18.95

Free delivery: Oct 22

If paid before 14:00

Part no. RHD-8K2819350AD-1

Audi A4 B8 A5 8T Heater Coolant Hose Pipe Water Line 2.0 TDI 8K2819350AD

£18.95

Free delivery: Oct 22

If paid before 14:00

Part no. 079121065BN-1

AUDI S5 8T 4.2 Petrol CAUA Coolant Pipe Left N/S Cooler Water Hose 079121065BN

£23.95

Free delivery: Oct 22

If paid before 14:00

Part no. 420121439

Audi R8 42 Gen 1 4.2 FSI Engine Water Coolant Hoses 420121439

£28.95

Free delivery: Oct 22

If paid before 14:00

Part no. 04L121131A

Audi A4 B8 A5 8T Water Coolant Flange Pipe Hose Line 2.0 TDI 04L121131A

£18.95

Free delivery: Oct 22

If paid before 14:00

Part no. 06E121016Q

Audi A4 B8 A6 C7 A8 D3 Cooling Fluid Coolant Pump 3.0 Petrol Engine 06E121016

£94.95

Free delivery: Oct 22

If paid before 14:00

Part no. 8K0819334AP

Audi S5 8T 3.0 TFSI Coolant Water Hose Line Tube Pipe 8K0819334AP

£18.95

Free delivery: Oct 22

If paid before 14:00

Part no. 03L122157AA

Audi A4 B8 Water Hose Radiator Coolant Pipe Line 2.0 TDI Diesel 03L122157AA

£13.95

Free delivery: Oct 22

If paid before 14:00

Part no. 8E0260707BK

Audi A4 B7 2.0 TDI Air Conditioning A/C Refrigerant Pipe Hose Line 8E0260707BK

£13.95

Free delivery: Oct 22

If paid before 14:00

Part no. 8J0121251B

Audi RS3 8P 2.5 TFSI Engine Water Coolant Radiator Cooling Unit 8J0121251B

£265.95

Free delivery: Oct 22

If paid before 14:00

Part no. 6R0122101CA

Audi A1 8X Coolant Hose Water Pump Pipe Cooling Line 1.4 Petrol 6R0122101CA

£28.95

Free delivery: Oct 22

If paid before 14:00

Part no. 3Q0121058C

Audi Q3 F3 Water Hose Cooling Radiator Coolant Pipe Line 2.0 TDI 3Q0121058C

£13.95

Free delivery: Oct 22

If paid before 14:00

Part no. RHD-059121012A-1

Audi A6 C7 Additional Auxiliary Water Coolant Pump With Mount 059121012A

£18.95

Free delivery: Oct 22

If paid before 14:00

Part no. 8K0819332B

Water Pipe Audi A5 S5 8T S4 B8 8K 3.0 TFSI V6 Coolant Hose Line 8K0819332B

£18.95

Free delivery: Oct 22

If paid before 14:00

Part no. 8K0121251AK

Audi A4 B8 A5 8T Q5 8R Coolant Radiator Engine Cooling Unit 8K0121251AK

£70.95

Free delivery: Oct 22

If paid before 14:00

Part no. 8E0121283AE

Audi A4 B7 Radiator Air Duct Guide Left N/S 8E0121283AE

£23.95

Free delivery: Oct 22

If paid before 14:00

Part no. 8R0819374D

Audi Q5 8R Coolant Hose Pipe Water Line Tube 2.0 TDI 8R0819374D

£13.95

Free delivery: Oct 22

If paid before 14:00

Part no. 06L121085AF

Audi Q5 FY A4 B9 8W 2.0 TFSI Petrol Engine Water Coolant Pipe Hose 06L121085AF

£23.95

Free delivery: Oct 22

If paid before 14:00

Part no. 4K0121449S

Audi A6 C8 3.0 TDI Engine Coolant Pipe Water Hose Line 4K0121449S

£13.95

Free delivery: Oct 22

If paid before 14:00

Part no. 8W0121448H

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

£18.95

Free delivery: Oct 22

If paid before 14:00

Part no. 04L122157BF

Audi A4 B8 2.0 TDI CNHC Diesel Engine Water Coolant Pipe Hose Line 04L122157BF

£18.95

Free delivery: Oct 22

If paid before 14:00

Part no. 80A819370B

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

£13.95

Free delivery: Oct 22

If paid before 14:00

Part no. 8E0121207E-2

Audi A4 B7 Engine Radiator Cooling Fan Motor Shroud 2.0 TDI 8E0121207E

£70.95

Free delivery: Oct 22

If paid before 14:00

Part no. 8E0819373K

Audi RS4 B7 Engine Water Coolant Pipe Return Hose Line 4.2 V8 BNS 8E0819373K

£42.95

Free delivery: Oct 22

If paid before 14:00

Part no. 04L121071G

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

£13.95

Free delivery: Oct 22

If paid before 14:00

Part no. 05E919529E

Audi Q2 GA Temperature Sensor Diesel Engine Exhaust Gas Sensor Probe 05E919529E

£75.95

Free delivery: Oct 22

If paid before 14:00

Part no. 8K0819334E

Audi A4 B8 Heat Exchanger Heater Pipe Hose Line 2.0 TDI 8K0819334E

£94.95

Free delivery: Oct 23 – 30

If paid before 14:00

Part no. 059121054C

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

£18.95

Free delivery: Oct 22

If paid before 14:00

Part no. 8W0819350G

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

£13.95

Free delivery: Oct 22

If paid before 14:00

Part no. 4H0819334L

Audi A8 D4 3.0 TDI Heater Hose Cooling Coolant Radiator Pipe Line 4H0819334L

£13.95

Free delivery: Oct 22

If paid before 14:00

Part no. 06M121071E

Audi SQ5 FY 3.0 TFSI Water Hose Cooling Radiator Coolant Pipe Line 06M121071E

£23.95

Free delivery: Oct 22

If paid before 14:00

Part no. 079121071CF-1

AUDI S5 8T Petrol 4.2 FSI V8 Coolant Hose Rear Engine Water Pipe 079121071CF

£47.95

Free delivery: Oct 22

If paid before 14:00

Part no. 8W0122293AE

Audi A4 B9 2.0 TDI DETA Water Coolant Hose Line Tube Pipe 8W0122293AE

£18.95

Free delivery: Oct 22

If paid before 14:00

Part no. 8W0122448S

Audi A5 F5 Water Coolant Hose Line Pipe Tube 8W0122448S

£13.95

Free delivery: Oct 22

If paid before 14:00

Part no. 1K0122073DD

VW Volkswagen Eos 1F Water Hose Cooling Coolant Radiator Pipe Line 1K0122073DD

£13.95

Free delivery: Oct 22

If paid before 14:00

Part no. 07K145778F

Audi RS3 8V 8Y Turbocharger Turbo Oil Feed Pipe Line Tube 2.5 TFSI 07K145778F

£66.95

Free delivery: Oct 22

If paid before 14:00

Part no. 5Q0122101BP

Audi A3 8V 2.0 TDI Water Hose Radiator Coolant Pipe Line Diesel 5Q0122101BP

£13.95

Free delivery: Oct 22

If paid before 14:00

Part no. 7L0815987E

Audi Q7 4L Auxiliary Water Heater Feed Coolant Pipe Hose Diesel 7L0815987E

£13.95

Free delivery: Oct 22

If paid before 14:00

Part no. 8W0819334AE

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

£18.95

Free delivery: Oct 22

If paid before 14:00

Part no. 059121507AB

Audi A5 8T Engine Coolant Cooling Hose Pipe Line 3.0 TDI Diesel 059121507AB

£13.95

Free delivery: Oct 22

If paid before 14:00

Part no. 420121456

Audi R8 Gen 1 4.2 FSI Coolant Pipe Hose Line Right O/S 420121456

£56.95

Free delivery: Oct 22

If paid before 14:00

Part no. 8P4121284B

Audi A3 8V Front Right O/S Radiator Air Duct Guide Bumper 8P4121284B

£18.95

Free delivery: Oct 22

If paid before 14:00

Part no. 8E0121251AH

Audi S4 B7 Engine Cooling Radiator Cooler 4.2 FSI V8 BBK 8E0121251AH

£142.95

Free delivery: Oct 22

If paid before 14:00

Part no. 4E0965559D

Audi S8 D3 Additional Water Coolant Pump 4E0965559D

£47.95

Free delivery: Oct 22

If paid before 14:00

Part no. 8K0819377C

Audi A5 8T Radiator Water Cooling Coolant Pipe Hose Line Diesel 8K0819377C

£18.95

Free delivery: Oct 22

If paid before 14:00

Part no. 4M0122447J

Audi Q7 4M Q8 Mk2 3.0 Diesel Water Coolant Pump Line Tube Pipe Q4M0122447J

£23.95

Free delivery: Oct 22

If paid before 14:00

Part no. 420121073

Audi R8 42 Engine Coolant Pipe Water Hose Cooling Line Tube 420121073

£28.95

Free delivery: Oct 22

If paid before 14:00

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