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 A6 C6 Radiator Water Coolant Expansion Tank Cap Cover Lid 8E0121321

€23.95

Part no. 8K0819374S

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

€23.95

Part no. 03L121157AH

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

€23.95

Part no. 1K0133366BB

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

€23.95

Part no. 06L145735J

Audi A4 B8 A5 F5 Turbine Lubrication Oil Return Pipe 2.0 TFSI 06L145735J

€42.95

Part no. 5Q0122101BP-1

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

€37.95

Part no. 8J0121124A

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

€37.95

Part no. 8K0121109H

Audi A5 8T Water Hose Cooling Coolant Radiator Pipe Line 2.0 TDI 8K0121109H

€23.95

Part no. 059121598AB

Audi A8 D4 Engine Water Coolant Pipe Hose Line Feed 3.0 TDI 059121598AB

€37.95

Part no. 8N0422891E

Audi TT 8N Power Steering Rack Return Oil Hose Pipe Line 3.2 Quattro 8N0422891E

€85.95

Part no. 06F121111H

Audi A3 S3 8P 2.0 TFSI Coolant Thermostat Housing Unit 06F121111H

€23.95

Part no. 8J0121447E

Audi TT 8J Engine Coolant Vent Hose Pipe 2.0 TDI Diesel CBBB 8J0121447E

€23.95

Part no. 8U0121485

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

€51.95

Part no. 078133753A

Audi RS4 B7 Jet Pump Intake Vacuum System Pipe Hose Line 4.2 FSI 078133753A

€80.95

Part no. 4G0819337

Audi A6 C7 3.0 TFSI Water Coolant Pipe Hose Line 4G0819337

€23.95

Part no. 04L121131AB

Audi A3 8V 2.0 TDI DGCA Coolant Water Flange Housing Hose Line 04L121131AB

€28.95

Part no. 059121507M

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

€23.95

Part no. 5WA907527A

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

€23.95

Part no. 1J0121403B

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

€23.95

Part no. 05L122157CD

Audi A5 F5 Engine Coolant Hose Tube Line Pipe 2.0 TDI Diesel DTNA 05L122157CD

€51.95

Part no. 8E0121251C

Audi A4 B7 Water Coolant Radiator Manual Petrol 3.2 FSI 8E0121251C

€32.95

Part no. 06F121057C

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

€47.95

Part no. 4G0121292E

Audi A7 4G Engine Radiator Coolant Upper Centre Cover Panel 4G0121292E

€23.95

Part no. 8K0121055

Audi S5 8T 4.2 FSI CAUA Bottom Radiator Coolant Pipe Hose Line 8K0121055

€23.95

Part no. 059121465B-1

Audi A4 B8 A5 8T A6 C7 Q7 4L Coolant Pipe Water Hose 3.0 TDI 059121465B

€56.95

Part no. 6R0121070N

Audi A1 8X Engine Coolant Water Pipe Hose Line 1.6 TDI CAYC 6R0121070N

€51.95

Part no. 059117015K

Audi Q7 4M Engine Oil Cooler Radiator 3.0 TDI 059117015K

€32.95

Part no. 059131685D

Audi A6 A7 4G8 3.0 TDI Oil Cooler Radiator Bracket Mount 059131685D

€23.95

Part no. 059121008A

Audi A7 4G8 Water Pump Wheel Coolant Unit 3.0 TDI Diesel 059121008A

€23.95

Part no. 8W0819337

Audi A4 A5 S5 F5 Engine Coolant Hose Pipe Line Tube 8W0819337

€23.95

Part no. 8W0122101B

Water Hose Audi A4 B9 A5 F5 Cooling Coolant Radiator Pipe Line 8W0122101B

€23.95

Part no. 7L0819857C

Audi Q7 4L Coolant Pipe Hose Line Duct Tube 3.0 TDI 7L0819857C

€23.95

Part no. 8J0121109E

Audi TT Mk2 8J Water Coolant Pipe Hose 1.8 2.0 TFSI CDAA CESA Petrol 8J0121109E

€23.95

Part no. 059121016C

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

€66.95

Part no. 8K0145923F

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

€23.95

Part no. 8W0122055BN

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

€23.95

Part no. 03L121011G

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

€23.95

Part no. 03L121157AD

Audi A4 B8 A5 8T Coolant Pipe Hose 2.0 TDi Diesel EGR 03L121157AD

€23.95

Part no. 6R0129637E

Audi A1 8X Air Filter Box Pipe Pipe Line Hose 1.6 TDI CAYC 6R0129637E

€23.95

Part no. 1K0122101CK

Audi Q3 8U Water Hose Cooling Radiator Coolant Pipe Line 1K0122101CK

€23.95

Part no. 059121031H-1

Water Pump Wheel Audi Q5 8R A7 4G8 3.0 TDI Diesel Coolant Pump Pulley 059121031H

€23.95

Part no. 4K2819377E-2

Audi A6 C8 Engine Cooling Water Pipe Coolant Hose Line Tube 4K2819377E

€28.95

Part no. 8W0122449BC

Audi A4 B9 A5 F5 Engine Water Pipe Line Water Coolant 8W0122449BC

€32.95

Part no. 06E121005F

Coolant Water Pump Audi A4 B7 B8 S4 B8 Additional Pump 06E121005F

€23.95

Part no. 06K145778K

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

€23.95

Part no. 7L0121276A

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

€23.95

Part no. 059121065EA

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

€23.95

Part no. 8E0959501T

Audi A4 B7 Engine Cooling Coolant Fan Shroud 2.0 Petrol 8E0959501T

€37.95

Part no. 4G0819350B

Audi A6 C7 A7 4G8 Water Radiator Coolant Pipe Hose Tube Line Petrol 4G0121485T

€23.95

Part no. 4G0121403G

Audi A6 C7 Expansion Overflow Coolant Reservoir Bottle Tank 4G0121403G

€23.95

Part no. 03L906088BE

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

€23.95

Part no. 4M0819350F

Audi Q7 4M Q8 Mk2 VW Touareg Mk3 Water Coolant Hose Line Tube Pipe 4M0819350F

€23.95

Part no. 06E117021J

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

€37.95

Part no. 5Q0122051AF

Audi Seat Skoda VW Water Coolant Hose Pipe Line Water Coolant 5Q0122051AF

€37.95

Part no. 04E122157H

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

€23.95

Part no. 8U0121056

Audi RS Q3 8U Radiator Coolant Hose Pipe Line 8U0121056

€28.95

Part no. 03C121070B

Audi A3 8P Water Pipe Hose Line Engine Cooling Coolant Unit Hose 03C121070B

€23.95

Part no. 8N0121096H

Audi TT 8N TTS Radiator Coolant Hose Tube Line Pipe 8N0121096H

€56.95

Part no. 4G0121447BB

Audi A6 S6 C7 Engine Water Coolant Pipe Hose Line 4.0 Petrol Engine 4G0121447BB

€23.95

Part no. 5N0122063D

Audi Q3 8U Electric Water Pump Additional Coolant Pump 5N0122063D

€32.95

Part no. 06F115397H-1

Audi A4 B7 VW Golf Mk5 Oil Filter Housing Oil Cooler 2.0 TFSI Petrol 06F115397H

€28.95

Part no. 06H121085C-1

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

€23.95

Part no. 4K2121214E

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

€23.95

Part no. 07K971845A

Audi RS Q3 8U Engine Wiring Bracket Holder Support Carrier 07K971845A

€23.95

Part no. 4G0145920C

Audi A6 C7 3.0 TFSI Water Coolant Pipe Hose Line 4G0145920C

€23.95

Part no. 8R0819374D

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

€23.95

Part no. 04L121093G

Audi A4 B9 Additional Coolant Pump Mount Bracket Holder 2.0 TDI 04L121093G

€23.95

Part no. 059121071DE

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

€23.95

Part no. 4G0145921C

Audi A6 C7 Water Hose Cooling Coolant Pipe Line 3.0 TFSI 4G0145921C

€23.95

Part no. 8N0121073A

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

€56.95

Part no. 4K0121071J-1

Audi A6 C8 Engine Coolant Hose Pipe Water Line Cooling 4K0121071J

€32.95

Part no. 8K0959455P

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

€28.95

Part no. 6C0121407

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

€23.95

Part no. 5N0122157AG

Audi Q3 8U 2.0 TFSI Water Pipe Hose Coolant Cooling Line 5N0122157AG

€37.95

Part no. 07L121071M

Audi S8 D3 Water Cooling Liquid Hose Coolant Pipe Line 07L121071M

€28.95

Part no. 4G0121481P

Audi S6 C7 Water Coolant Cooling Hose Pipe Rear Left N/S 4.0 Petrol 4G0121481P

€23.95

Audi A6 C7 A7 4G Water Coolant Expansion Tank Reservoir 3.0 TDI 4G0121403AH

-1%

Part no. 4G0121403AH

Audi A6 C7 A7 4G Water Coolant Expansion Tank Reservoir 3.0 TDI 4G0121403AH

Promo price

€42.95

€42.45

Part no. 5Q0121407G

Audi A3 8V Expansion Tank Header Coolant Reservoir Bottle 5Q0121407G

€23.95

Part no. 059103482H

Audi A4 B9 Q7 4M Engine Oil Filler Pipe Neck Hose Line Tube 059103482H

€23.95

Part no. 5N0122051CD

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

€32.95

Part no. 059121064B

Audi A4 S4 B8 A5 S5 8T Engine Cooling Radiator Hose Tube Pipe Line 059121070A

€23.95

Part no. 5Q0959455AH

Audi A3 8V S1 8X Engine Cooling Fan Radiator Fan Blower 5Q0959455AH

€51.95

Part no. 06E121016Q

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

€113.95

Part no. 059121447N

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

€23.95

Part no. 06Q121065C

Audi S3 8Y Volkswagen Golf Mk8 Water Coolant Pipe 2.0 TFSI 06Q121065C

€23.95

Part no. 8W0121400B-1

Audi A4 B9 A5 F5 Engine Oil Coolant Hose Pipe Line Tube 8W0121400B

€32.95

Part no. 079121137M

Audi S6 C7 S7 4G Coolant Pipe Connection Flange Adapter Line 079121137M

€23.95

Part no. 8R0121081AQ

Audi Q5 8R Expansion Coolant Radiator Hose Pipe Tube Line Cooling 8R0121081AQ

€23.95

Part no. 4G0121056J

Audi A6 S6 C7 Water Coolant Cooling Hose Pipe Rear Left N/S 4.0 Petrol 4G0121056

€23.95

Part no. 06F121065J

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

€23.95

Part no. 059130299AS

Audi A4 B9 Q7 4M Fuel Line Pressure Sensor Pipe Hose 3.0 TDI Diesel 059130299AS

€28.95

Part no. 8W0121405F

Audi A5 F5 Expansion Coolant Tank Bottle 8W0121405F

€28.95

Part no. 6C0121109B

Audi A1 8X Volkswagen Polo 6C Water Coolant Pipe Hose 1.0 TFSI 6C0121109B

€23.95

Part no. 06E121031F

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

€23.95

Part no. 5Q0121599AA-1

Skoda Octavia RS VR Auxiliary Water Pump Coolant Circulation Cooling 5Q0121599AK

€51.95

Part no. 8K0121055E

Audi A5 8T Water Hose Cooling Coolant Radiator Pipe Line Diesel 8K0121055E

€32.95

Part no. 5Q0121058AE

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

€23.95

Part no. 059131425A

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

€28.95

Part no. 059121449N

Audi A4 B9 A5 F5 A6 C8 3.0 TDI Coolant Water Pipe Hose Tube Line 059121449N

€23.95

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