What is the construction and purpose of cooling system hoses and pipes?

Cooling system hoses and pipes are coolant circuit elements installed between the engine, radiator, thermostat, heater core, and expansion tank. A typical hose consists of an inner layer resistant to fluid, a reinforcing layer, and an outer cover protecting against temperature and material aging. Depending on the mounting location, it can take the form of a flexible hose or a rigid plastic or metal section.

What are cooling system hoses and pipes used for?

Cooling system hoses and pipes are used to route coolant through the entire system and maintain the proper engine operating temperature. They are responsible for connecting subassemblies, circuit tightness, and the proper transfer of fluid to the radiator, heater core, and water pump. Their failure can cause leaks, air in the system, and disruption of fluid circulation.

What is the construction and function of a cooling system connector?

A cooling system connector is a connection point to which a hose or pipe transporting coolant is attached. It can be part of the thermostat housing, radiator, cylinder head, or another subassembly and usually works with a gasket, clamp, or quick-connector. Its task is to maintain a tight and stable connection in places where pressure and temperature changes occur.

How to choose cooling system hoses and pipes for a specific car version?

It is best to compare the OEM part number, hose path, end diameters, and type of connectors. It is also worth checking the engine version, fuel type, production year, mounting location, and any interchangeable numbers. For used parts, the completeness of brackets, vents, and branches also matters.

What symptoms indicate wear of cooling system hoses and pipes?

The most common signs are coolant leaks, traces of moisture at connections, swollen material, cracks, or a hose structure that is too soft. In practice, fluctuations in engine operating temperature, gurgling, and sediment traces near clamps may also appear. Such symptoms should be checked along with fluid levels and connection tightness.

How to care for cooling system hoses and pipes after installation?

After installation, it is worth checking the hose routing, tightening of clamps, and lack of contact with hot or moving engine compartment elements. It is also important to check the coolant level and system venting after the first start. Regular inspections help to quickly detect leaks, abrasions, and material deformation.

Cooling system hoses and lines

At Global Parts, we offer a wide selection of original used car parts, including cooling system hoses and lines for many popular car brands such as BMW, Mini, Mercedes, Audi, Volkswagen, and others. The cooling system hoses and lines we offer are quality-controlled, ensuring you receive a top-quality product.

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Audi A5 8T 2.0 TFSI CDNB Vacuum Solenoid Coolant Line Tube Hose Pipe 06H133514K

€32.95

Free delivery: Sep 23 – 24

If paid before 14:00

Part no. 5Q0121070BQ

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

€23.95

Free delivery: Sep 23 – 24

If paid before 14:00

Part no. 5Q0121064BB

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

€23.95

Free delivery: Sep 23 – 24

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

€23.95

Free delivery: Sep 23 – 24

If paid before 14:00

Part no. 4K0819342J

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

€66.95

Free delivery: Sep 23 – 24

If paid before 14:00

Part no. 06K121492F

Audi S3 8V VW Golf Mk7 Cooling Water Hose Coolant Pipe Line 2.0 TFSI 06K121492F

€23.95

Free delivery: Sep 23 – 24

If paid before 14:00

Part no. 059121064D

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

€28.95

Free delivery: Sep 23 – 24

If paid before 14:00

Part no. 4G0819377Q

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

€23.95

Free delivery: Sep 23 – 24

If paid before 14:00

Part no. 5N0122157BG

Audi Q3 SE Mk1 Water Coolant Pipe Hose Line Tube 5N0122157BG

€23.95

Free delivery: Sep 23 – 24

If paid before 14:00

Part no. 04L121064AC

Audi A3 8V Engine Water Coolant Pipe Cooling Hose Line 04L121064AC

€28.95

Free delivery: Sep 23 – 24

If paid before 14:00

Part no. 5N0122086F

Audi Q3 SE Coolant Hose Engine Cooling System Hose Line Tube Pipe 5N0122086F

€51.95

Free delivery: Sep 23 – 24

If paid before 14:00

Part no. 1K0122073DD

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

€23.95

Free delivery: Sep 23 – 24

If paid before 14:00

Part no. 5Q0122073AL

Volkswagen Passat B8 Water Coolant Hose Tube Line Pipe 2.0 TDI 5Q0122073AL

€23.95

Free delivery: Sep 23 – 24

If paid before 14:00

Part no. 03L122157AA

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

€23.95

Free delivery: Sep 23 – 24

If paid before 14:00

Part no. 5N0121070M

Audi A3 8P Water Hose Cooling Radiator Coolant Pipe Line 5N0121070M

€23.95

Free delivery: Sep 23 – 24

If paid before 14:00

Part no. 4K0819460

Audi A6 C8 Engine Coolant Pipe Line Heating Hose 2.0 TFSI Hybrid 4K0819460

€47.95

Free delivery: Sep 23 – 24

If paid before 14:00

Part no. 5N0122073AH

Audi Q3 SE Mk1 2.0 TDI Water Coolant Pipe Hose Line Tube 5N0122073AH

€42.95

Free delivery: Sep 23 – 24

If paid before 14:00

Part no. 8T0941717D

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

€23.95

Free delivery: Sep 23 – 24

If paid before 14:00

Part no. 8W0819332D

Audi A4 B9 A5 F5 Water Hose Engine Cooling Coolant Pipe Line Diesel 8W0819332D

€23.95

Free delivery: Sep 23 – 24

If paid before 14:00

Part no. 8K0121101P

Audi A4 B8 2.0 TDI Diesel Water Pipe Engine Cooling Coolant Hose Line 8K0121101P

€23.95

Free delivery: Sep 23 – 24

If paid before 14:00

Part no. 8W0122291AH

Audi A4 B9 A5 F5 Coolant Water Pipe Grommet 2.0 TDI Diesel 8W0122291AH

€23.95

Free delivery: Sep 23 – 24

If paid before 14:00

Part no. 5N0122101AS

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

€85.95

Free delivery: Sep 23 – 24

If paid before 14:00

Part no. 06H121057H

Audi A4 S4 B8 8K A5 S5 8F 8T Thermostat Coolant Hose Pipe Line 06H121057H

€23.95

Free delivery: Sep 23 – 24

If paid before 14:00

Part no. 079121071CF-1

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

€56.95

Free delivery: Sep 23 – 24

If paid before 14:00

Part no. 4G0121081EJ

Audi A7 Sportback 4G Coolant Hose Pipe 3.0 TDI Diesel 4G0121081EJ

€23.95

Free delivery: Sep 23 – 24

If paid before 14:00

Part no. 4K0121052H

Audi A6 C8 Engine Coolant Pipe Line Heating Hose 2.0 TFSI Hybrid 4K0121052H

€23.95

Free delivery: Sep 23 – 24

If paid before 14:00

Part no. 6R0122051BR

Water Hose Audi A1 S1 8X 2.0 Cooling Radiator Coolant Pipe Line 6R0122051BR

€66.95

Free delivery: Sep 23 – 24

If paid before 14:00

Part no. 04E103474G

Audi A3 8V Tank Crankcase Breather Vent Pipe Line 04E103474G

€23.95

Free delivery: Sep 23 – 24

If paid before 14:00

Part no. 057121073C

Audi Q7 4L 4.2 TDI Coolant Hose Pipe Hose Line 057121073C

€23.95

Free delivery: Sep 23 – 24

If paid before 14:00

Part no. 8K1819350AQ

Audi A4 S4 B8 Water Hoses Cooling Coolant Radiator Pipes 3.0 TFSI 8K1819350AQ

€23.95

Free delivery: Sep 23 – 24

If paid before 14:00

Part no. 03L121157AA

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

€23.95

Free delivery: Sep 23 – 24

If paid before 14:00

Part no. 06E121045E

Audi A4 B7 Water Hose Radiator Coolant Pipe Line Tube 3.2 TFSI 06E121045E

€23.95

Free delivery: Sep 23 – 24

If paid before 14:00

Part no. 03L121071B

Coolant Pipe Audi A4 B8 A5 8T 2.0 TDI Water Cooling Line 03L121071B

€23.95

Free delivery: Sep 23 – 24

If paid before 14:00

Part no. 07L121070Q

Audi S8 D3 Quattro 5.2 FSI V10 BSM Coolant Pipe Right Water Line 07L121070Q

€23.95

Free delivery: Sep 23 – 24

If paid before 14:00

Part no. 06H121085H

Audi A5 8T 2.0 TFSI Water Hose Cooling Radiator Coolant Pipe Line 06H121085H

€28.95

Free delivery: Sep 23 – 24

If paid before 14:00

Part no. 1K0122109AL

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

€23.95

Free delivery: Sep 23 – 24

If paid before 14:00

Part no. 8J0121051Q-1

Audi TT Mk2 8J Water Coolant Pipe Hose Line 2.0 TDI Diesel Engine 8J0121051Q

€23.95

Free delivery: Sep 23 – 24

If paid before 14:00

Part no. 7L0815987E

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

€23.95

Free delivery: Sep 23 – 24

If paid before 14:00

Part no. 8J0121156A

Audi TTS 8J Radiator Coolant Hose Pipe Tube Line 2.0 TFSI Petrol 8J0121156A

€32.95

Free delivery: Sep 23 – 24

If paid before 14:00

Part no. 03C121070M

Audi A1 8X Water Pipe Hose Line Engine Cooling Coolant Unit Hose 03C121070M

€23.95

Free delivery: Sep 23 – 24

If paid before 14:00

Part no. 8K0145922A

Audi S4 B8 Engine Coolant Pipe Hose Line Left N/S Outer 3.0 TFSI 8K0145922A

€23.95

Free delivery: Sep 23 – 24

If paid before 14:00

Part no. 06E121083N

Audi A4 S4 B8 3.0 TFSI Water Hose Coolant Pipe Line Tube 06E121083N

€37.95

Free delivery: Sep 23 – 24

If paid before 14:00

Part no. 8R0121101G

Audi A4 B8 A5 Water Coolant Hose Pipe Line 8R0121101G

€23.95

Free delivery: Sep 23 – 24

If paid before 14:00

Part no. 059121507AB

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

€23.95

Free delivery: Sep 23 – 24

If paid before 14:00

Part no. 06D121492J

Audi A4 B7 A6 C6 Engine Coolant Pipe Hose Tube Line 2.0 BWE Petrol 06D121492J

€28.95

Free delivery: Sep 23 – 24

If paid before 14:00

Part no. 8J0121051Q

Audi TT Mk2 8J 2.0 TDI Engine Water Coolant Pipe Hose Line 8J0121051Q

€32.95

Free delivery: Sep 23 – 24

If paid before 14:00

Part no. 079121070T

Audi A4 B7 4.2 V8 Coolant Pipe Hose Line Tube Cooling 079121070T

€32.95

Free delivery: Sep 23 – 24

If paid before 14:00

Part no. 4F0121081G

Audi A6 C6 Water Hose Coolant Cooling Tube Pipe Line 2.7 Diesel 4F0121081G

€23.95

Free delivery: Sep 23 – 24

If paid before 14:00

Part no. 4K2819347F

Audi A6 C8 Coolant Hose Line Pipe Tube Engine Cooling 4K2819347F

€32.95

Free delivery: Sep 23 – 24

If paid before 14:00

Part no. 1K0122051CM

Audi S3 8P Water Hose Cooling Coolant Radiator Pipe Line 1K0122051CM

€23.95

Free delivery: Sep 23 – 24

If paid before 14:00

Part no. 8K1819350AB

Audi A4 B8 A5 8T Heater Matrix Connecting Pipe Coolant Hose Tube 8K1819350AB

€23.95

Free delivery: Sep 23 – 24

If paid before 14:00

Part no. 8J0121157A

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

€32.95

Free delivery: Sep 23 – 24

If paid before 14:00

Part no. 079121070BS

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

€23.95

Free delivery: Sep 23 – 24

If paid before 14:00

Part no. 079121065P

Audi A4 B7 4.2 V8 Petrol Coolant Pipe Cooler Water Hose 079121065P

€23.95

Free delivery: Sep 23 – 24

If paid before 14:00

Part no. 8K0819377C

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

€23.95

Free delivery: Sep 23 – 24

If paid before 14:00

Part no. 4K0122101AT

Audi A6 C8 Water Pipe Hose Line Cooling Coolant 4K0122101AT

€23.95

Free delivery: Sep 23 – 24

If paid before 14:00

Part no. 059121737AR

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

€47.95

Free delivery: Sep 23 – 24

If paid before 14:00

Part no. 1K0122073GF

Audi A3 8P Water Hose Cooling Coolant Radiator Pipe Line 1K0122073GF

€23.95

Free delivery: Sep 23 – 24

If paid before 14:00

Part no. 06A121133J

Audi TT Mk1 Engine Coolant Flange Water Housing 1.8T Petrol 06A121133J

€23.95

Free delivery: Sep 23 – 24

If paid before 14:00

Part no. 7L8121070BG

Audi Q7 4L Water Coolant Pipe Hose Line 3.0 TDI 7L8121070BG

€47.95

Free delivery: Sep 22 – 24

If paid before 14:00

Part no. 059121064N

Audi A6 C8 Q5 FY Q7 4M Water Hose Coolant Pipe Line 3.0 TDI 059121064N

€32.95

Free delivery: Sep 23 – 24

If paid before 14:00

Part no. 06E121045AS

Audi A4 S4 B8 S5 8T Water Hose Radiator Coolant Pipe Line 3.0 TFSI 06E121045AS

€61.95

Free delivery: Sep 23 – 24

If paid before 14:00

Part no. 059122471AB

Audi Q7 4M Q8 Mk1 Engine Coolant Hose Line Tube Pipe Set 3.0 Diesel 059122471AB

€94.95

Free delivery: Sep 22 – 24

If paid before 14:00

Part no. 4K0819374Q

Audi A6 C8 Engine Coolant Pipe Water Hose Cooling Line Tube 4K0819374Q

€23.95

Free delivery: Sep 23 – 24

If paid before 14:00

Part no. 6C0122051AE

Audi A1 8X 1.4 TFSI CZCA Coolant Hose Line Tube Pipe 6C0122051AE

€23.95

Free delivery: Sep 23 – 24

If paid before 14:00

Part no. 03C121497D

Audi A3 8P Water Pipe Hose Line Engine Cooling Coolant Unit Hose 03C121497D

€23.95

Free delivery: Sep 23 – 24

If paid before 14:00

Part no. 03G121473

Audi A4 S4 Avant 8E Water Coolant Pipe Hose 2.0 Diesel Engine Vent 03G121473

€23.95

Free delivery: Sep 23 – 24

If paid before 14:00

Part no. 4M0819927CP

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

€56.95

Free delivery: Sep 22 – 24

If paid before 14:00

Part no. 059121085Q

Audi A6 C8 Q7 4M Coolant Water Pipe Hose Line Tube 3.0 TDI 059121085Q

€32.95

Free delivery: Sep 23 – 24

If paid before 14:00

Part no. 059121512N

Audi A6 4G Q5 8R 2.0 TDI Diesel Water Hose Line Tube Pipe 1K0121096R 059121512N

€23.95

Free delivery: Sep 23 – 24

If paid before 14:00

Part no. 8E0121101C

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

€23.95

Free delivery: Sep 23 – 24

If paid before 14:00

Part no. 8K0145673AM

Audi A5 8T 2.0 CNCD Petrol Intercooler Pipe Hose Line Tube 8K0145673AM

€47.95

Free delivery: Sep 23 – 24

If paid before 14:00

Part no. 06H121057G

Audi A4 B8 A5 8T Water Hose Cooling Coolant Radiator Pipe Line 06H121057G

€23.95

Free delivery: Sep 23 – 24

If paid before 14:00

Part no. 1K0122101DK-1

Audi TT 8J Upper Radiator Coolant Hose Pipe 2.0 TFSI BWA 1K0122101DK

€32.95

Free delivery: Sep 23 – 24

If paid before 14:00

Part no. 8W2819350L

Audi A4 S4 B9 A5 F5 Engine Water Coolant Hose Pipe Line 2.0 TFSI 8W2819350L

€23.95

Free delivery: Sep 23 – 24

If paid before 14:00

Part no. 04L122157CC

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

€28.95

Free delivery: Sep 23 – 24

If paid before 14:00

Part no. 07K121057A

Coolant Hose Audi RS3 8V TTRS 8S 2.5 TFSI Cooling Pipe Line 07K121057A

€23.95

Free delivery: Sep 23 – 24

If paid before 14:00

Part no. 5Q0121619A

Audi A3 8V TT FV VW Golf Mk7 Water Coolant Connector Flange Diesel 5Q0121619A

€23.95

Free delivery: Sep 23 – 24

If paid before 14:00

Part no. 6R0122447K-1

Audi A1 8X Coolant Water Pipe Hose Line Engine Cooling 6R0122447K

€23.95

Free delivery: Sep 23 – 24

If paid before 14:00

Part no. 07L121481H

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

€66.95

Free delivery: Sep 23 – 24

If paid before 14:00

Part no. 06F145383N

Audi TTS 8J Turbocharger Coolant Pipe Hose Line 2.0 TFSI 06F145383N

€28.95

Free delivery: Sep 23 – 24

If paid before 14:00

Part no. 04L121131J

Audi A3 8V Skoda Octavia Mk3 Water Coolant Flange Pipe Hose Line 04L121131J

€23.95

Free delivery: Sep 23 – 24

If paid before 14:00

Part no. 1K0122101GG

Audi A3 8P Water Coolant Pipe Hose Line 1.8 FSI BZB Petrol Engine 1K0122101GQ

€23.95

Free delivery: Sep 23 – 24

If paid before 14:00

Part no. 8E0265381

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

€23.95

Free delivery: Sep 23 – 24

If paid before 14:00

Part no. 4K0122055AK

Audi A6 C8 Water Coolant Pipe Hose Line 3.0 TDI 4K0122055AK

€23.95

Free delivery: Sep 23 – 24

If paid before 14:00

Part no. 059121511CT-1

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

€42.95

Free delivery: Sep 23 – 24

If paid before 14:00

Part no. 5Q0122073R

Audi A3 8V Water Hose Coolant Pipe Line Tube 5Q0122073R

€23.95

Free delivery: Sep 23 – 24

If paid before 14:00

Part no. 8K0122293AE

Porsche Macan 95 Audi A4 S4 8K A5 S5 8F Thermostat Quick Coupling 8K0122293AE

€23.95

Free delivery: Sep 23 – 24

If paid before 14:00

Part no. 4H0121055AB

Audi A8 D4 3.0 Diesel Coolant Return Line Tube Pipe Hose Right O/S 4H0121055AB

€37.95

Free delivery: Sep 23 – 24

If paid before 14:00

Part no. 07K121133E

Audi RS3 8V RSQ3 F3 Water Coolant Pump Regulator Flange 2.5 TFSI 07K121133E

€23.95

Free delivery: Sep 23 – 24

If paid before 14:00

Part no. 8W0145924P

Audi A4 B9 Water Hose Cooling Radiator Coolant Pipe Line 8W0145924P

€23.95

Free delivery: Sep 23 – 24

If paid before 14:00

Part no. 8W0145919K

Audi A5 F5 Water Coolant Hose Line Pipe Tube 8W0145919K

€28.95

Free delivery: Sep 23 – 24

If paid before 14:00

Part no. 8V0121124-1

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

€56.95

Free delivery: Sep 23 – 24

If paid before 14:00

Part no. 3C0122101FL

Volkswagen Seat Skoda Audi Water Coolant Pipe Line Hose 2.0 TDI 3C0122101FL

€32.95

Free delivery: Sep 23 – 24

If paid before 14:00

Part no. 06H121057E

Audi A5 8T Water Hose Cooling Coolant Radiator Pipe Line 06H121057E

€23.95

Free delivery: Sep 23 – 24

If paid before 14:00

Part no. 059121465B

Coolant Pipe Audi A6 C7 Q7 4L 3.0 TDI Water Hose Line Tube 059121465B

€32.95

Free delivery: Sep 23 – 24

If paid before 14:00

Part no. 059121075DJ

Audi Q7 4L Quattro Diesel 3.0 V6 TDI Engine Cooling Coolant Pipe 059121075DJ

€23.95

Free delivery: Sep 23 – 24

If paid before 14:00

Part no. 8W0122101AL

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

€28.95

Free delivery: Sep 23 – 24

If paid before 14:00

Part no. 4H0122101D

Audi A8 D4 Water Pipe Engine Cooling Coolant Hose Line 3.0 TDI Diesel 4H0122101D

€32.95

Free delivery: Sep 23 – 24

If paid before 14:00

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