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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Mercedes W447 M651 Diesel Water Coolant Pipe Cooling Hose A6512033482

€23.95

Part no. 5WA145838

Audi S3 8Y VW Golf Mk8 Water Cooling Coolant Radiator Pipe 2.0 TFSI 5WA145838

€23.95

Part no. 7811780-1

BMW Mini Cooper R55 R56 R57 LCI R58 R59 N47N Water Pipe Coolant Hose 7811780

€23.95

Part no. 7600592-1

Coolant Return Hose BMW F20 F21 F30 LCI Turbo Radiator Water Pipe Line 7600592

€23.95

Part no. 07L121071M

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

€28.95

Part no. 2E0122101G

Volkswagen Crafter 2E Metal Water Hose Cooling Coolant Pipe Line 2E0122101G

€56.95

Part no. 7797405

BMW E81 E82 E87 E90 E91 Exhaust Manifold Engine Oil Hose Pipe 7797405

€23.95

Part no. 7812942

BMW F30 F31 F32 330d 430d N57N Radiator Coolant Hose Pipe 7812942

€23.95

Part no. A2128320994

Water Pipe Mercedes W212 Engine Cooling Coolant Hose Line A2128320994

€23.95

Part no. 06D121133A

Audi A4 B7 Water Coolant Engine Cooling Flange Pipe Hose Line 06D121133A

€28.95

Part no. A2045013425

Mercedes W204 Radiator Coolant Hose Cooling Pipe Bleed Line Diesel A2045013425

€28.95

Part no. 06F121065J

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

€23.95

Part no. -A6110701033

Mercedes W639 OM646 Fuel Line Hose Pressure Pipe Rail High Pressure Pump

€23.95

Part no. 7547185

BMW 5 7 Series E60 E61 E65 545i 735i Crankcase Ventilation Vent Pipe 7547185

€23.95

Part no. 1K0122063D

VW Volkswagen Mk5 V Mk6 VI 2.0 Petrol Water Coolant Pipe Hose Line 1K0122063D

€23.95

Part no. 6775533

BMW 1 Series E81 E87 LCI Petrol Radiator Return Hose Line Pipe 6775533

€23.95

Part no. 9802110

BMW Mini Countryman Paceman R60 R61 Radiator Water Pipe Coolant Hose Petrol

€23.95

Part no. 9129594

BMW E81 E87N E90 N47 Diesel Cooling Radiator Water Hose Pipe 9129594

€23.95

Part no. A2742034002

Coolant Pipe Mercedes W213 C238 X253 Heater Water Cooling Hose Line A2742034002

€32.95

Part no. 06L121075B

Audi A4 B8 A5 8T A6 C7 Water Coolant Pipe Hose Line 1.8 2.0 TFSI 06L121075B

€28.95

Part no. 9326896

Water Hose BMW G30 G31 G11 B57 Diesel Radiator Coolant Pipe Line 9326896

€23.95

Part no. 8K0121081P

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

€23.95

Part no. A2058301701

Mercedes W205 W213 W238 Cooling Engine Water Coolant Hose Pipe A2058301701

€37.95

Part no. 8580491

Hose Pipe BMW F40 B47B Mini F56 B47D Line Connection Radiator Coolant 8580491

€23.95

Part no. 6R0121109

Volkswagen Polo 6R Water Hose Radiator Coolant Cooling Pipe Line 6R0121109

€23.95

Part no. 1K0121156DL

Audi A3 8P Seat Leon II Water Hose Coolant Pipe Line 2.0 TDI 1K0121156DL

€47.95

Part no. 7827842

BMW F10 X5 F15 X6 F16 Coolant Hose Cooling Pipe Water Line 7827842

€23.95

Part no. 8381224

Hose Pipe BMW X5 E53 3.0d M57N Engine Inlet Heater Coolant Auxiliary 8381224

€23.95

Part no. 7800408

BMW 3 5 Series E90 E91 LCI E60 Oil Filter Cooler Connection 7800408

€23.95

Part no. 7534918

Radiator Supply Hose BMW E60 E61 N62N Petrol Cooling Pipe Line 7534918

€42.95

Part no. 8K0819334Q

Audi A5 S5 8T Coolant Water Hose Line Tube Pipe 3.0 TFSI 8K0819334Q

€23.95

Part no. 5Q0122051AT

Volkswagen Golf 5G Water Hose Radiator Coolant Pipe Line 5Q0122051AT

€23.95

Part no. A9065011482

Mercedes Sprinter W906 Water Hose Cooling Radiator Coolant Pipe Hose A9065011482

€28.95

Part no. 8583477

Water Hose BMW F30 F31 335dX F32 F36 435dX N57Z Coolant Pipe Line Set 8583477

€66.95

Part no. 6R0121157

Volkswagen Polo 6R Water Hose Radiator Coolant Pipe Line 6R0121157

€23.95

Part no. 7617380

Mini F55 F56 Cooper S Water Hose Coolant Pump Cooling Pipe Hose 7617380

€23.95

Part no. GK21-8260-BC

Ford Transit Custom Mk8 Radiator Water Coolant Pipe Hose Line GK21-8260-BC

€23.95

Part no. 5Q0122101GH

Audi A3 8V 35 TDI DFGA Water Coolant Hose Line Pipe Tube 5Q0122101GH

€47.95

Part no. 9208179

BMW 1 3 Series F20 F30 Hose Radiator And Water Valve 9208179

€23.95

Part no. 5N0122157BN

Audi Q3 8U Water Cooling Coolant Pipe Hose Line 2.0 TDI Diesel 5N0122157BN

€23.95

Part no. 7L6121109D

VW Volkswagen Touareg 7L Water Pipe Hose Coolant Cooling Line 7L6121109D

€23.95

Part no. A6262030282

Mercedes W205 OM626 Water Hose Radiator Coolant Cooling Pipe Line A6262030282

€23.95

Part no. 1831795

Ford Fiesta Mk7 ST Coolant Pipe 1.6 Ecoboost Petrol JTJA BM5G-8K556-FA

€37.95

Part no. 2284283

Vent Pipe BMW F10 M5 F12 F13 M6 Cooling Line Water Hose Radiator Cooler 2284283

€23.95

Part no. 05C133352AF

VW Volkswagen Golf 8 CD1 1.0 TSI DLAA Oil Breather Pipe 05C133352AF

€23.95

Part no. 8514244

Coolant Hose BMW F10 F11 520d N47N Radiator Water Cooling Pipe Line 8514244

€23.95

Part no. 8K0819374S

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

€23.95

Part no. A2045010782

Water Pipe Mercedes W204 OM642 Engine Cooling Radiator Coolant Hose A2045010782

€23.95

Part no. 04L121064G

Volkswagen VW Golf Mk7 5G Water Hoses Radiator Coolant Pipes Lines 04L121064G

€28.95

Part no. 3C0121156BD

VW Volkswagen Passat B6 Golf 1K Water Coolant Pipe Hose Tube Line 3C0121156BD

€23.95

Part no. 7635794

Coolant Hose BMW F20 F30 LCI B38 Water Cooling Pipe Radiator 7635794

€23.95

Part no. A6512030882

Coolant Hose Mercedes W204 Diesel OM651 EGR Cooler Valve Line A6512030882

€23.95

Part no. 7612444

Cooling Hose BMW E84 N20 Petrol Engine Radiator Water Coolant Pipe Line 7612444

€23.95

Part no. 1097164-2

Power Steering Tank BMW E90 E91 E92 325d 330d Reservoir Return Line 1097164

€23.95

Part no. 059121065EA

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

€23.95

Part no. 9802099-1

Mini Cooper R60 R61 Countryman Coolant Water Cooling Hose Pipe Line 9802099

€32.95

Part no. A2642000800

Water Hose Coolant Mercedes W205 M264 Petrol Cooling Pipe Line A2642000800

€28.95

Part no. A2055011900

Mercedes W205 M274 Coolant Hose Radiator Engine Water Cooling Line A2055011900

€23.95

Part no. 1K0122447EQ

VW Volkswagen Golf VI Mk6 2.0 TDi Coolant Water Hose Line Tube Pipe 1K0122447EQ

€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. A6422000258

Water Pipe Mercedes W204 C207 W212 OM642 Cooling Coolant Hose Line A6422000258

€23.95

Part no. 06F121058D

VW Volkswagen Golf Mk6 VI 2.0 TDi Water Coolant Hose Pipe Line 06F121058D

€23.95

Part no. 9802103

Mini Cooper R60 R61 Cooling System Coolant Radiator Water Hose Pipe 9802103

€23.95

Part no. A2465011358

Water Hose Mercedes W176 W246 OM651 Cooling Coolant Pipe Line A2465011358

€42.95

Part no. 06D121082B

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

€23.95

Part no. 9684589080-1

Peugeot 207 307 1.6 HDI Water Hose Cooling Coolant Pipe Line 9684589080

€23.95

Part no. A2048301996

Water Pipe Mercedes W204 W207 Engine Coolant Cooling Hose Line A2048301996

€23.95

Part no. A1715010225

Vent Pipe Mercedes SLK R171 Cooling Line Expansion Tank Hose A1715010225

€28.95

Part no. 06F145317H

VW Volkswagen Golf 5 2.0 TFSI BWA Coolant Pipe Hose Bracket Mount 06F145317H

€23.95

Part no. 06K121075P

Audi A3 S3 8V Water Hose Radiator Coolant Pipe Line 2.0 Petrol 06K121075P

€23.95

Part no. 7536235

BMW X5 X6 Series E70 E71 F15 Engine Water Coolant Pipe Hose Radiator 7536235

€23.95

Part no. A2135015501

Water Hose Mercedes W213 C238 C253 C257 Diesel OM654 Coolant Line A2135015501

€37.95

Part no. 7600586

Thermostat Pipe BMW F20 F30 F31 Coolant Hose Line 7600586

€23.95

Part no. 4G0121049L

Audi A7 4G 3.0 TDI CDUD Water Radiator Coolant Pipe Hose Tube Line 4G0121049L

€23.95

Part no. 8383708

BMW X5 Series E53 M57 3.0d Diesel Cooling Radiator Expansion Tank Hose 8383708

€23.95

Part no. 8377699

BMW 7 Series E65 E66 E67 Engine Coolant Hose Pipe Water Valve Right O/S Radiator

€23.95

Part no. A2118302615

Mercedes-Benz E CLS Class W211 W219 Engine Water Coolant Hose Pipe A2118302615

€23.95

Part no. 7823890

Water Hose BMW X5 E70 LCI X5 F15 X6 F16 Diesel Cooling Radiator Pipe 7823890

€32.95

Part no. 1K0122447HC

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

€23.95

Part no. 7519256

BMW E60 E61 M54 Petrol Engine Cooling Radiator Supply Hose 7519256

€23.95

Part no. 06H121065D

Audi A5 8T 2.0 TFSI Water Hose Cooling Radiator Coolant Pipe Line 06H121065D

€23.95

Part no. 03P121065C

VW Polo 5 Seat Ibiza 4 Skoda 1.2 TDI CFWA Coolant Pipe Water Tube 03P121065C

€23.95

Part no. GK2Q-8K556-AC

Ford Transit Custom Water Hose Engine Cooling Pipe 2.0 EcoBlue GK2Q-8K556-AA

€23.95

Part no. 7805795

BMW E90 E91 LCI N57 Hose Line Coolant Pump Expansion Tank 7805795

€32.95

Part no. A2048305796

Water Pipe Mercedes W204 OM651 Engine Cooling Radiator Coolant Hose A2048305796

€32.95

Part no. 7789720

BMW 1 Series E87 118d 120d M47N2 Cooling Radiator Engine Water Hose Pipe 7789720

€23.95

Part no. A2642007500

Mercedes W205 M264 Petrol Radiator Coolant Pipe Line Tube Hose A2642007500

€28.95

Part no. A6395014382

Mercedes-Benz Vito W639 Engine Radiator Water Coolant Hose Pipe A6395014382

€23.95

Part no. 059121071BJ

Audi A5 8T Radiator Coolant Water Hose Line Tube Pipe Diesel Engine 059121071BJ

€23.95

Part no. 6951946

BMW 1 3 Series E87 E90 E91 E92 E93 Radiator Engine Return Hose Line Pipe 6951946

€23.95

Part no. 1475563

Mini Cooper One R50 W10 Coolant Water Hose Pipe Expention Tank 1475563

€23.95

Part no. 7834117

BMW 5 6 Series E60 E61N M5 E63 E64 M6 Water Hose Cooling Pipe 7834117

€23.95

Part no. 5Q0122051EJ

Audi A3 S3 8V 2.0 TFSI Engine Water Cooling Pipe Hose Line 5Q0122051EJ

€37.95

Part no. 7598236

Coolant Hose BMW F20 F30 F31 N55 Petrol Water Cooling Pipe Line 7598236

€47.95

Part no. 6R0121070L

Audi A1 8X 1.4 TSI Petrol Engine Water Hose Coolant Pipe Line 6R0121070L

€28.95

Part no. 7811782

Mini Cooper D R55 R56 LCI R58 Diesel N47N Coolant Water Hose Pipe 7811782

€32.95

Part no. 8E0260707BK

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

€23.95

Part no. A2128305496

Water Hose Mercedes W212 CLS C218 OM651 Cooling Coolant Pipe Line A2128305496

€28.95

Part no. 4H0121081AB

Audi A8L 4H Expansion Bottle Tank Radiator Hose Line Tube Pipe 4H0121081AB

€23.95

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