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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BMW F20 F21 F30 F31 LCI B48 Hose Radiator Top Thermostat Coolant Water 8662836

€47.95

Part no. A2055017601

Bleed Hose Mercedes W205 Coolant Expansion Tank To Radiator Line A2055017601

€28.95

Part no. 8K0121049AF-1

Audi A4 B8 2.0 TDI Water Coolant Hose Tube Line Pipe 8K0121049AF

€23.95

Part no. 3422607

BMW X3 Series E83 LCI Radiator And Engine Return Hose 3422607

€23.95

Part no. 7P5122447F-1

Porsche Cayenne S 92a Water Breather Pipe Hose Cooling Tube 7P5122447F

€28.95

Part no. BK3Q8K520B2B

Ford Transit Mk8 Water Hose Cooling Coolant Pipe Line 2.2 TDCI BK3Q8K520B2B

€23.95

Part no. A6402001452

Thermostat Hose Mercedes W169 W245 OM640 Water Coolant Pipe Line A6402001452

€23.95

Part no. 06D121085C

Audi A4 B7 A6 C6 Water Coolant Hose Line Tube Pipe 2.0 TFSI BWE 06D121085C

€23.95

Part no. 7526414

BMW MINI Cooper One R50 R52 Radiator Coolant Pipe Hose Petrol 7526414

€23.95

Part no. 7552404

BMW 1 Series E81 E82 E87N N43 Cooling Radiator Water Hose Pipe Petrol 7552404

€23.95

Part no. 7794156

BMW X5 Series E70 Engine Pipe Coolant Hose Radiator 7794156

€47.95

Part no. 7794153

BMW X5 E70 Engine Pipe Coolant Hose Radiator 7794153

€23.95

Part no. 7535900

Mini Cooper R50 R52 Radiator Cooling System Coolant Hose 7535900

€23.95

Part no. 3400409

BMW X3 Series E83 M47N2 Heater Water Valve Flow Radiator Hose Pipe Line 3400409

€23.95

Part no. 6C1Q8K520AB

Coolant Flange Pipe Ford Transit MK7 Tdci Diesel Water Line 6C1Q8K520AB

€23.95

Part no. 06E121065S

Audi A4 B8 A5 S5 8T Water Hose Cooling Coolant Pipe Line 3.0 TFSI 06E121065S

€23.95

Part no. 9224372

BMW F10 F11 N47N N47S1 Water Coolant Hose Return Pipe Line 9224372

€23.95

Part no. 5N0122157AJ

Volkswagen VW Tiguan 5N Water Pipe Hose Coolant Cooling Line 5N0122157AJ

€23.95

Part no. 4G0121071N

Audi A7 4G8 3.0 TDI CDUC Diesel Water Coolant Hose Line Tube Pipe 4G0121071N

€23.95

Part no. PEL500310

Land Rover Discovery 3 L319 Engine Cooling Water Hoses Thermostat PEL500340

€56.95

Part no. 1K0121070BR

Volkswagen VW Golf Mk5 Water Hose Radiator Coolant Pipe Line 1K0121070BR

€23.95

Part no. 8514218

Coolant Hose BMW X5 F15 X6 F16 Cylinder Head To Radiator Hose Line 8514218

€28.95

Part no. 7L8121065K

Audi Q7 4L 4.2 TDI Water Coolant Pipe Hose Line 7L8121070G

€23.95

Part no. 7802630

BMW X5 E46 E53 Diesel Engine Cooling Water Return Pipe Hose 7787379

€23.95

Part no. 7N0122073T

Volkswagen VW Tiguan 5N Water Hose Coolant Cooling Tube Pipe Line 7N0122073T

€23.95

Part no. 03C121070D

Audi A3 8P Water Pipe Hose Line Engine Cooling Coolant Unit Hose 03C121070D

€23.95

Part no. 1K0121063P

Volkswagen Scirocco Mk3 Touran 1T Jetta A6 Coolant Hose Line Pipe 1K0121063P

€23.95

Part no. A2731420083

Mercedes W164 W221 C219 Molded Hose Coolant Hose Pipe Line M273 A2731420083

€23.95

Part no. 8C119F476BA

Ford Transit MK7 Coolant Radiator Line Pipe Hose 8C119F476BA

€23.95

Part no. 06L121081K

Audi Q5 FY 2.0 TFSI Water Cooling Line Vacuum Breather Pipe Hose 06L121081K

€32.95

Part no. A2128300996

Water Pipe Mercedes W212 Engine Cooling Coolant Hose Line A2128300996

€23.95

Part no. 079121137F

Audi S5 8T Cooling Coolant System Flange Rear Right O/S 079121137F

€23.95

Part no. 059121398B

Audi A4 B8 A5 8T Q7 4L Coolant Hose Line Pipe Tube 3.0 TDI Diesel 059121398B

€28.95

Part no. 7794157

BMW X5 Series E70 Hose Pipe Water Hose 7794157

€23.95

Part no. 057121597M

Audi Q7 4L 4.2 TDI Diesel Turbocharger Coolant Pipe Hose Right O/S 057121597M

€32.95

Part no. 03L121065K

Audi A4 B8 A5 8T 2.0 TDI Hose Thermostat Coolant Pipe Line 03L121065K

€23.95

Part no. 5Q0122157AB

Coolant Pipe Audi S1 8X S3 8V VW Golf R Mk7 2.0 TSI TFSI Water Hose 5Q0122157AB

€23.95

Part no. 3421989

BMW X3 Series E83 LCI Coolant Hose Pipe Line Tube 3421989

€23.95

Part no. 7796271

BMW 3 E90 E91 E92 335d M57N2 Radiator Bottom Coolant Pump Water Hose Pipe

€42.95

Part no. A2058303104

Coolant Hose Mercedes W205 Diesel OM651 Engine Cooling Heating Line A2058303104

€23.95

Part no. 06D121071R

Audi A4 B7 2.0 TFSI BGB Water Coolant Hose Tube Line Pipe 06D121071R

€28.95

Part no. A6420701433-1

Mercedes W164 OM642 Fuel Injection Line Pressure Pipe Rail Injector A6420701433

€28.95

Part no. 7649300

Coolant Radiator Line BMW F20 F21 F22 F23 F30 F32 F33 F36 Pipe Hose Tube 7649300

€23.95

Part no. A2742030182

Coolant Hose Mercedes X253 Petrol M274 Heat Exchanger Water Line A2742030182

€23.95

Part no. A6082000300

Mercedes W177 OM608 Diesel Engine Coolant Cooling Pipe Line Hose A6082000300

€28.95

Part no. 7603574

Engine Oil Pump BMW F30 F32 xDrive Suction Pipe Pickup Tube Petrol 7603574

€28.95

Part no. 8K0121081BL

Audi A4 B8 A5 8T 2.0 TDI Radiator Water Coolant Pipe Hose Tube Line 8K0121081BL

€23.95

Part no. 8K0122293B

Audi A4 B8 Q5 8R Water Cooling Coolant Flange Pipe Hose 2.0 TDI 8K0122293B

€23.95

Part no. 7789403

BMW X5 Series E53 3.0d M57N Engine Water Pipe Engine Coolant Hose 7789403

€23.95

Part no. 7546663

BMW Z4 Series E85 Roadster Cabrio Radiator Cooling Coolant Water Hose 7546663

€23.95

Part no. 7800107

Coolant Hose BMW F01 F10 N57 Radiator Water Cooling Pipe Line 7800107

€23.95

Part no. A2602004300

Mercedes W177 M260 Petrol Engine Coolant Cooling Hose Pipe Line A2602000300

€28.95

Part no. 8K0122101B

Audi A4 B8 A5 8T Heater Water Cooling Coolant Pipe Hose Line 3.0 TDI 8K0122101B

€37.95

Part no. 04E122157BE

Coolant Pipe Seat Ibiza 6J VW Polo 5 1.2 TSI CBZB Turbocharger Cooling Line

€23.95

Part no. 7786034

BMW E46 E60 E65 X3 E83 X5 E53 3.0d Diesel M57 M57N Turbo Air Pipe Hose 7786034

€23.95

Part no. 06D121497A

Audi A4 B7 Turbocharger Water Coolant Pipe Hose Line 2.0 TFSI 06D121497A

€28.95

Part no. A1685011082

Mercedes A Class W168 Radiator Expansion Tank Bottom Coolant Hose A1685011082

€23.95

Part no. 5WA122101AN

Skoda Octavia VR Audi TT A3 VW Golf Water Coolant Hose Pipe 5WA122101AN

€70.95

Part no. A1688350197

Mercedes A Class W168 Engine Heat Exchanger Matrix Coolant Hose A1688350197

€23.95

Part no. 6912729

BMW 5 Series E60 E61 LCI Radiator And Engine Return Hose 6912729

€23.95

Part no. A6512000082

Mercedes W176 OM651 Coolant Hose Carrier Oil Water Heat Exchanger A6512000082

€23.95

Part no. A9075010200

Mercedes W907 Water Hose Engine Cooling Coolant Pipe A9075010200

€42.95

Part no. 7558071

Thermostat Coolant Pipe BMW E81 E87 E90 E91 Petrol N43 Cooling Hose 7558071

€23.95

Part no. A6512032582

Mercedes W176 W242 W246 OM651 Coolant Hose EGR Cooler Feed Line A6512032582

€23.95

Part no. 5K0122101N

Volkswagen Scirocco III 2.0 TDI Coolant Hose Radiator Water Pipe Line 5K0122101N

€32.95

Part no. 7521067

BMW E81 E87 E90 Petrol Radiator Engine Oil Cooling Hose Pipe 7521067

€23.95

Part no. 7808078

Coolant Hose BMW E70 LCI E71 N57 Water Cooling Pipe Radiator 7808078

€23.95

Part no. 2754219

BMW Mini Cooper R55 R56 R57 R58 Cooling system coolant water hose 2754219

€23.95

Part no. A6071400400

EGR Exhaust Cooler Mercedes W176 W246 Heat Exchanger OM607 Diesel 147350364R

€23.95

Part no. 8518965

BMW F20 F21 F30 LCI F32 B37 B47 Radiator Expansion Tank Coolant Pipe 8518965

€32.95

Part no. 1K0122101JR

VW Golf 6 Audi A3 8P 1.6 TDI Water Hose Radiator Coolant Pipe Line 1K0122101JR

€23.95

Part no. 059121507L

Audi Q7 4L Engine Coolant Cooling Hose Pipe Left N/S 3.0 TDI Diesel 059121507L

€32.95

Part no. 5Q0122101BE

Audi A3 8V Water Hose Radiator Coolant Pipe Line Diesel 5Q0122101BE

€23.95

Part no. 7795262

BMW E60 E60N E61 E61N LCI Coolant Hose Pipe Diesel M57N2 7795262

€23.95

Part no. A2465010182

Water Pipe Mercedes C117 W176 W246 M270 Radiator Coolant Hose Line A2465010182

€23.95

Part no. 8650984

BMW G20 Water Hose Radiator Coolant Cooling Tube Pipe Line 8650984

€32.95

Part no. A2720700535

Fuel Line Hose Mercedes W204 W211 W212 M272 DE35 High Pressure Pipe A2720700535

€184.95

Part no. 5WA122157AG

Volkswagen Polo VI AW 2.0 TSI Coolant Water Hose Line Tube Pipe 5WA122157AG

€42.95

Part no. 8616555

BMW F20 F21 F30 LCI M140i 340i B58 Hose Pipe Cylinder Head 8616555

€28.95

Part no. 8511747

Coolant Hose BMW F10 F11 LCI Radiator Cooling Water Pipe Line 8511747

€23.95

Part no. A4478323623

Mercedes Vito W447 Water Coolant Hose Cooling Pipe Line A4478323623

€28.95

Part no. 8518749

BMW 1 3 Series F20 F21 F30 F31 LCI B47 Diesel Transmission Oil Cooling Hose

€23.95

Part no. A2045012582

Water Hose Mercedes W204 M271 Engine Cooling Radiator Coolant Pipe A2045012582

€23.95

Part no. A6462030982

Mercedes W204 Water Hose Coolant Cooling Pipe Line A6462030982

€28.95

Part no. A2602000100

Coolant Hose Mercedes W177 M260 Engine Coolant Cooling Pipe Line A2602000100

€23.95

Part no. 6C0122101E

Audi A1 8X 1.4 TFSI Water Coolant Pipe Hose Cooling Line 6C0122101E

€37.95

Part no. A6402033282

Mercedes W169 W245 180CDI 200CDI OM640 Water Coolant Pipe Hose A6402033282

€23.95

Part no. 7617363

Mini Cooper F55 F56 F57 F60 Radiator Engine Cooling Coolant Water Hose 7617363

€23.95

Part no. 03G121096

Audi A4 B8 2.0 TDI Water Hose Radiator Coolant Pipe Line 03G121096

€23.95

Part no. 7056129

BMW E64 Water Hose Cooling System Vent 7056129

€23.95

Part no. 6C0122073B

Cooling Line VW Polo 6C Audi A1 8X 1.6 TDI Water Coolant Pipe Hose 6C0122073B

€23.95

Part no. 04L121065AN

Audi A5 8T Water Coolant Pipe Hose Line Tube 04L121065AN

€23.95

Part no. 7808079

BMW X5 E70 LCI N57 N57S Water Hose Coolant Cooling Pipe Line Radiator 7808079

€23.95

Part no. A2034701420

Mercedes-Benz C-Class W203 Fuel Tank Filler Neck Pipe Hose A2034701420

€23.95

Part no. 8637970

Engine Ventilation Pipe BMW F40 F46 Mini F55 F56 F60 Vacuum Line Hose 8637970

€23.95

Part no. 6950780

BMW Z4 Series E85 E86 Compressor Condenser Pressure Hose Pipe 6950780

€23.95

Part no. A1775201400

Mercedes W177 A35 Intercooler Air Pipe Line Hose M260 A1775201400

€56.95

Part no. 7799184

BMW F07 F10 F20 F30 F33 F36 G30 Engine Coolant Flange Connector Hose 7799184

€23.95

Part no. 4G0122101AJ

Water Hose Audi A6 C7 A7 4G Diesel Cooling Radiator Pipe Line 4G0122101AJ

€23.95

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