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.

More information

Find it faster

Match to your vehicle

Make

Audi A6 C6 Water Hose Coolant Cooling Tube Pipe Line 4F0121055J

Product currently unavailable

Part no. 5Q0122101GK

Audi A3 8V Water Coolant Hose Line Pipe Tube 1.5 TFSI DADA 5Q0122101GK

Product currently unavailable

Part no. 8K1819350BB

Audi A4 B8 A5 8T 2.0 TDI Water Coolant Hose Pipe Line 8K1819350BB

Product currently unavailable

Part no. 06A121065DP

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

Product currently unavailable

Part no. 4G0145926

Audi A6 C7 3.0 TFSI Water Coolant Pipe Hose Line Left N/S 4G0145926

Product currently unavailable

Part no. 5N0121070AC

Audi Q3 8U Water Cooling Coolant Pipe Hose Line 2.0 TDI Diesel 5N0121070AC

Product currently unavailable

Part no. 8E0121049N

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

Product currently unavailable

Part no. 06D121065K

Audi A4 B7 2.0 TFSI BGB Coolant Hose Line Tube Pipe 06D121065K

Product currently unavailable

Part no. 07K121063G

Audi RS3 8Y 2.5 TFSI Petrol Engine Coolant Hose Line Tube Pipe 07K121063G

Product currently unavailable

Part no. 04L122157BE

Audi A5 8T 2.0 TDI CNHA Water Coolant Pipe Tube Line Hose 04L122157BE

Product currently unavailable

Part no. 1K0122051HD

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

Product currently unavailable

Part no. 1K0121157AG

VW Audi Seat Skoda 1.9 BXE TDI Diesel Water Hose Coolant Line 1K0121157AG

Product currently unavailable

Part no. 4G0121109

Audi A6 C6 Allroad Coolant Hose Line Pipe Tube 4G0121109 4G0122293G N90687001

Product currently unavailable

Part no. 038121071S

Audi A4 B7 1.9 TDI Water Hose Cooling Coolant Radiator Pipe Line 038121071S

Product currently unavailable

Part no. 4F0121101G

Audi A6 C6 Water Hose Cooling Radiator Coolant Pipe Line 4F0121101G

Product currently unavailable

Part no. 038121065BH

Audi A4 B7 1.9 TDI Water Coolant Pipe Hose Line Tube 038121065BH

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

Part no. 8R0121036A

Audi Q5 8R Heater Water Cooling Coolant Pipe Hose Line 8R0121036A

Product currently unavailable

Part no. 8K0819374Q-2

Audi A5 8T Radiator Water Cooling Coolant Hose Pipe Line 2.0 TFSI 8K0819374Q

Product currently unavailable

Part no. 8K0121081CG

Audi A4 B8 2.0 TDI Ventilation Breather Pipe Hose Line 8K0121081CG

Product currently unavailable

Part no. 7L6122109D

Audi Q7 4L TFSI Water Hose Cooling Coolant Radiator Pipe Line 7L6122109D

Product currently unavailable

Part no. 079133240AR

Audi S7 4G8 Vacuum Solenoid Coolant Line Tube Hose Pipe 4.0 TFSI 079133240AH

Product currently unavailable

Part no. 7H0819196

Volkswagen Transporter T5 Cooling Water Hose Coolant Pipe Line 2.5 TDI 7H0819196

Product currently unavailable

Part no. 06A121069C

Audi TT 8N Water Coolant Hose Pipe Cooling Line 1.8T Petrol 06A121069C

Product currently unavailable

Part no. 7L6121058AR

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

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. 3C0122157FH

Audi TT 8J 1.8 2.0 TFSI Petrol Engine Water Coolant Pipe Hose Line 3C0122157FH

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. 8K0121081T

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

Product currently unavailable

Part no. 04L121071H

Audi A6 C7 Q5 8R Water Coolant Hose Pipe Tube Line 2.0 TDI DDDA 04L121071H

Product currently unavailable

Part no. 059121670G-1

Audi A7 4G8 Cooling Hose Coolant Pipe Line 059121086BG

Product currently unavailable

Part no. 7L6122051AC

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

Product currently unavailable

Part no. 8E0260707BD

Audi S4 B6 4.2 V8 Water Coolant Pipe Hose Line 8E0260707BD

Product currently unavailable

Part no. 06L121492R

Audi A4 B9 A5 F5 Coolant Pipe Return Hose Tube Line 2.0 Petrol CVKB 06L121492R

Product currently unavailable

Part no. 8E0121107AH

Audi A4 B7 2.0 TDI Water Hose Vent Coolant Radiator Pipe Line 8E0121107AH

Product currently unavailable

Part no. 8K0819374

Audi A4 B8 2.0 TDI Diesel Water Pipe Engine Cooling Coolant Hose Line 8K0819374

Product currently unavailable

Part no. 03G121157B

Audi A4 B7 A6 Avant Coolant Hose PIpe Line 03G121157B

Product currently unavailable

Part no. 1K0122109BT

Volkswagen Golf Mk5 Audi A3 8P Water Hose Cooling Coolant Pipe Line 1K0122109BT

Product currently unavailable

Part no. 8E0121055N

Audi A4 B7 1.9 TDI Water Pipe Engine Cooling Radiator Coolant Hose 8E0121055N

Product currently unavailable

Part no. 06A103212A

Audi A3 8P Water Hose Cooling Radiator Coolant Pipe Line 1.6 Petrol 06A103212A

Product currently unavailable

Part no. 4F0121101

Audi A6 C6 FL Coolant Water Quick Connect Heater Pipe Hose 4F0121101

Product currently unavailable

Part no. 04L122157AB

Audi A4 B9 2.0 TDI DETA Diesel Water Coolant Hose Line Pipe Tube 04L122157AB

Product currently unavailable

Part no. 06H121085H

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

Product currently unavailable

Part no. 06A121065CB

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

Product currently unavailable

Part no. 8J0121063A

Audi TT TTS 8J Radiator Coolant Hose Pipe Tube Line 2.0 TFSI Petrol 8J0121063A

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. 07L121065J

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

Product currently unavailable

Part no. 4K0819377S

Audi A6 C8 Engine Cooling Coolant Drain Pipe Hose Tube Line 4K0819377S

Product currently unavailable

Part no. 03C103465AA

Audi A1 8X Water Pipe Hose Line Engine Cooling Coolant Unit Hose 03C103465AA

Product currently unavailable

Part no. 1K0122051FD

Audi A3 8P 1.8 2.0 TFSI Petrol Radiator Coolant Pipe Hose Line 1K0122051FD

Product currently unavailable

Part no. 80A819370B

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

Product currently unavailable

Part no. 8J0121157A

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

Product currently unavailable

Part no. 8E2819373

Audi A4 B7 1.9 TDI Water Pipe Engine Cooling Radiator Coolant Hose 8E2819373

Product currently unavailable

Part no. 079121065P

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

Product currently unavailable

Part no. 059121737AR

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

Product currently unavailable

Part no. 4K0819337S

Audi A6 C8 3.0 TFSI DLZA Engine Coolant Pipe Hose Line 4K0819337S

Product currently unavailable

Part no. 06E121045AN

Audi S4 B8 S5 8T Water Hose Radiator Coolant Pipe Line Tube 3.0 TFSI 06E121045AN

Product currently unavailable

Part no. 4G0121071N-1

Audi A6 C7 A7 4G Water Coolant Hose Line Tube Pipe 3.0 TDI 4G0121071N

Product currently unavailable

Part no. 6C0122051AE

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

Product currently unavailable

Part no. 03C121497D

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

Product currently unavailable

Part no. 8W0122101BH

Audi A4 B9 Water Hose Cooling Coolant Radiator Pipe Line 8W0122101BH

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. 8K1819373AC

Audi A4 B8 Engine Coolant Hose Tube Pipe Line S5000223

Product currently unavailable

Part no. 7L8121073H

Audi Q7 4L 3.0 TDI Water Coolant Pipe Hose Line 7L8121073H

Product currently unavailable

Part no. 8K0121055AC

Coolant Pipe Audi A4 B8 A5 8T 2.0 TDI Water Cooling Line 8K0121055AC

Product currently unavailable

Part no. 5Q0121113J

Audi Q3 F3 Coolant Hose Pipe Line 5Q0121113J

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. 8K0145931D

Audi S4 B8 Engine Water Coolant Pipe Hose Left N/S Outer 3.0 TFSI 8K0145931D

Product currently unavailable

Part no. 07L121053E

Audi S6 C6 S8 D3 Quattro 5.2 FSI V10 BSM Coolant Pipe Hose Water Line 07L121053E

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. 06K121497AQ

Audi S3 8V Water Hose Cooling Coolant Pipe Line 06K121497AQ

Product currently unavailable

Part no. 5N0121051H

Audi Q3 8U 2.0 TDI Engine Water Coolant Pipe Hose 5N0121051H

Product currently unavailable

Part no. 4K0122101BB

Audi A6 C8 A7 4K Water Hose Radiator Coolant Pipe Line Diesel 4K0122101BB

Product currently unavailable

Part no. 4F0121055AC

Audi A6 C6 Engine Cooling Coolant Hose Pipe Line 2.7 TDI 4F0121055AC

Product currently unavailable

Part no. 4E0121052C

Audi S8 D3 Water Coolant Cooling Connecting Pipe Hose Line 5.2 Petrol 4E0121052C

Product currently unavailable

Part no. 80A122055AK

Audi SQ5 FY Water Hose Cooling Radiator Coolant 80A122055AK

Product currently unavailable

Part no. 5N0122051AT

Audi Q3 8U 2.0 TDI Engine Water Coolant Pipe Hose 5N0122051AT

Product currently unavailable

Part no. 7L8121065R

Audi Q7 4L 3.0 Diesel Engine Coolant Hose Line Tube Pipe 7L8121065R

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. 04L121444J

Audi A3 8V 30 TDI DGTE Diesel Engine Coolant Hose Line Tube Pipe 04L121444J

Product currently unavailable

Part no. 5Q0122101CM

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

Product currently unavailable

Part no. 03L121065A

Audi A3 8P Water Coolant Pipe Hose Tube 2.0 TDI CBAB 03L121065A

Product currently unavailable

Part no. 8J0121073E

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

Product currently unavailable

Part no. 8R0122101S

Audi Q5 8R Water Coolant Pipe Hose Line 8R0122101S

Product currently unavailable

Part no. 4F0121107AN

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

Product currently unavailable

Part no. 04L121058AA

Audi TT FV A5 F5 Water Hose Cooling Coolant Pipe Line 2.0 TDI Diesel 04L121058AA

Product currently unavailable

Part no. 04L121058H

Audi TT FV Q3 8U Water Hose Cooling Coolant Pipe Line 2.0 TDI Diesel 04L121058H

Product currently unavailable

Part no. 5Q0122051AL

Audi A3 8V Water Coolant Cooling Pipe Hose Line Diesel Engine 5Q0122051AL

Product currently unavailable

...

Showing 892-979 of 979 products