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 A1 8X 1.8 TFSI TSI Engine Water Coolant Pipe Hose Line Tube 6C0129637

€28.95

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Volkswagen Passat CC Water Coolant Hose Pipe 3C0122157DR

€23.95

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Audi Q5 FY Coolant Hose With Quick Release Coupling Engine Bay 80A121081ED

€23.95

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Audi Q5 8R Engine Coolant Water Hose Pipe Line 2.0 Diesel 8R0819334AE

€32.95

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BMW 5 6 Series E60 E61 E63 E64 Hose Water Valve Radiator 6910758

€23.95

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BMW F20 LCI 114d 116d Water Hose Radiator Coolant Pipe Expansion Tank 8593773

€37.95

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Mini R55 R56 R57 LCI N47N Cooper D Radiator Cooler Coolant Pipe Hose 7811785

€23.95

Part no. 5WA121109D

Volkswagen Polo Mk6 AW Water Reservoir Coolant Pipe Hose Line 5WA121109D

€23.95

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Mercedes W177 Engine Coolant Hose Pipe Tube Line OM654 Diesel A6542031802

€89.95

Part no. 5Q0122101CE

Audi TTS FV Radiator Water Coolant Hose Pipe Tube Line Quick Release 5Q0122101CE

€28.95

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Seat Leon Mk3 5F Water Coolant Hose Pipe Line Petrol Engine CZEA 5Q0122051BD

€23.95

Part no. 6910757

BMW 5 6 Series E60 E61 E63 E64 Engine Coolant Hose Pipe Water Valve Radiator

€23.95

Part no. A2044661381

Water Pipe Mercedes W204 M271 Engine Cooling Radiator Coolant Hose A2044661381

€23.95

Part no. 9674300080

Citroen Relay 35L 2.2HDI Fuel Injection Line Pressure Rail Injector 9674300080

€23.95

Part no. A6422001001

Mercedes W164 W204 W211 W221 OM642 Diesel Water Pump A6422001001

€23.95

Part no. 1522435

Ford Focus Mk2 ST 2.5 Inlet Heater Pipe Hose Line 2.5 Duratec 3M5H-18C553-NH

€51.95

Part no. 8J0201216C

Audi TT 8J Water Coolant Hose Line Return Tube Pipe 8J0201216C

€23.95

Part no. A2205010182

Mercedes W220 Radiator Coolant Hose Cooling Line Pipe A2205010182

€23.95

Part no. A4145010025

Mercedes Vaneo W414 Radiator Breather Pipe Hose A4145010025

€23.95

Part no. 4H0121101AC

Audi A8 D4 Radiator Coolant Hose Water Pipe Line 3.0 TDI 4H0121101AC

€23.95

Part no. 2754222

Mini Cooper R55 R56 R57 Cooling System Coolant Radiator Water Hose 2754222

€23.95

Part no. BK31-8K012-AD

Ford Transit Mk8 Heater Matrix Pipe Hose Line 2.2 TDCi BK31-8K012-AD

€23.95

Part no. 2532023

Ford Transit Custom Coolant Pipe Hose Line 2.0 EcoBlue Diesel KK21-8A365-BB

€28.95

Part no. 1803532

Ford Transit Connect Mk2 Coolant Water Pipe Hose Line 1.6 Diesel AV61-8274-GF

€23.95

Part no. 4K0145963C

Audi A6 C8 Water Coolant Pipe Hose Line 50 TFSIe 4K0145963C

€28.95

Part no. 2795549

Mini R56 BMW X1 F48 Water Coolant Pipe 2.0 Diesel B47C20A Engine 2795549

€23.95

Part no. 03L121157AL

Volkswagen Sharan 7N Water Hose Cooling Coolant Radiator Pipe Line 03L121157AL

€23.95

Part no. FK62-9F287-CA

Range Rover Sport L494 Engine Coolant Radiator Hose Pipe Line FK62-9F287-CA

€23.95

Part no. A6422030182

Mercedes W639 Water Line Fitting Hose Pipe A6422030182

€23.95

Part no. A2712002452-2

Mercedes W204 Water Pump Hose Radiator Coolant Cooling Pipe Line A2712002452

€23.95

Part no. A2662030882

Water Hose Mercedes W169 W245 M266 Coolant Cooling Pump Pipe Line A2662030882

€23.95

Part no. 1778584

Ford Focus Mk3 Water Coolant Pipe Hose Line 1.6 TDCI CV61-8286-BB

€61.95

Part no. 1369690

Ford Focus ST Mk2 Engine Cooling Coolant Water Hose Pipe Line 3M5H-8274-EF

€23.95

Part no. A4155010282

Mercedes W415 Water Hose Coolant Cooling Pipe Line A4155010282

€23.95

Part no. 7C0121082B

Volkswagen VW Crafter SY Engine Coolant Hose Line Radiator Pipe 7C0121082B

€23.95

Part no. HPLA-8C480-CB

Land Range Rover Evoque L538 Water Coolant Hose Tube Line Pipe HPLA-8C480-CB

€23.95

Part no. A1715010282

Mercedes SLK R171 Water Hose Cooling Radiator Coolant Pipe A1715010282

€23.95

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Mercedes W177 Water Hose Coolant Cooling Pipe Line A2602000051

€66.95

Part no. 1827185

Ford Fiesta MK7 1.6 TDCI Radiator Lower Hose Coolant Cooling Pipe Line 1827185

€23.95

Part no. 5N0121070G

Volkswagen Tiguan 1 5N 2,0 TDi Diesel Coolant Pipe Water Line 5N0121070G

€23.95

Part no. A2712030382

Mercedes W205 Engine Water Coolant Pipe Hose M271 Petrol A2712030382

€23.95

Part no. 1674075

Ford Focus Mk3 Engine Crankcase Breather Hose Pipe 1.6 Duratec AE8G-6N664-BA

€23.95

Part no. 4K0145947E

Audi A6 C8 A7 4G Water Coolant Pipe Hose Line 50 TFSIe 4K0145947E

€56.95

Part no. 3Q0121070AG

Audi Q2 GA 2.0 TDI Water Hose Cooling Radiator Coolant Pipe Line 3Q0121070AG

€28.95

Part no. 4G0122449K

Audi A6 C7 A7 4G Water Coolant Pipe Hose Line 3.0 TDI 4G0122449K

€23.95

Part no. 8K1819376P

Audi A5 8T 2.0 TFSI Water Hose Cooling Coolant Radiator Pipe Line 8K1819376P

€23.95

Part no. 7852352

Coolant Hose BMW F90 M5 F92 M8 Water Cooling Pipe Line 7852352

€42.95

Part no. A6395280982

Mercedes-Benz Vito Viano W639 Air Charge Intercooler Hose Pipe A6395280982

€23.95

Part no. 2278438

Ford Transit Connect Mk2 Water Coolant Hose Tube Pipe 1.5 Diesel KV61-8C351-HF

€23.95

Part no. 8475730

BMW F45 F46 X1 F48 B47 Mini F56 Coolant Hose Water Pipe Line Tube Diesel 8475730

€32.95

Part no. 95510609602

Porsche Cayenne 9PA Engine Coolant Hose Line Pipe 95510609602

€23.95

Part no. HPLA-8C481-AA

Range Rover Sport L494 Coolant Hose Pipe Line 3.0 Diesel Engine HPLA-8C481-AA

€23.95

Part no. A9065010182

Radiator Hose Mercedes Sprinter W906 Diesel Water Cooling Pipe A9065010182

€23.95

Part no. 8363198

BMW 3 Series E46 Hose For Water Valve And Radiator Engine Cooling 8363198

€23.95

Part no. 8W0819334G

Audi A4 S4 8W B9 A5 S5 F5 Heater Water Coolant Hose Pipe Line 8W0819334G

€28.95

Part no. 2459845

Ford Transit Mk8 Water Coolant Pipe Hose Line 2.0 EcoBlue GK21-8260-BD

€28.95

Part no. 8E0121107AG

Audi A4 B7 2.0 TDI Water Hose Vent Coolant Radiator Pipe Line 8E0121107AG

€23.95

Part no. 9801444480

Peugeot Boxer Citroen Relay Mk3 Thermostat Coolant Pipe 2.0 2.2 HDi 9801444480

€23.95

Part no. 8K0819857B

Audi A5 8T Water Pipe Hose Line Engine Cooling Coolant Unit Hose 8K0819857B

€28.95

Part no. 4408497

Ford Transit Mk6 Radiator Hose Pipe Line 2C11-8B273-AB

€61.95

Part no. 7P6121070BK-1

Porsche Cayenne 92A Oil Cooler Cooling Tube Pipe Hose Line Set 7P6121070BK

€66.95

Part no. 5A319B0

BMW F70 F74 Double Clutch Control Pipe Transmission Hose Line Tube 5A319B0

€28.95

Part no. 5Q0121619D

Audi A3 8V Water Hose Cooling Coolant Radiator Pipe Line 5Q0121619D

€66.95

Part no. 06M121071E

Audi SQ5 FY 3.0 TFSI Water Hose Cooling Radiator Coolant Pipe Line 06M121071E

€28.95

Part no. 4K0145050C

Audi A6 C8 Engine Water Coolant Pipe Hose Line 50 TFSIe 4K0145050C

€28.95

Part no. 8R0819332J

Audi Q5 8R 2.0 TDI Engine Water Coolant Pipe Hose Line Diesel 8R0819332J

€23.95

Part no. 5A0C5A9

BMW U06 Active Tourer Water Coolant Pipe Hose Line 5A0C5A9

€23.95

Part no. 7P0121156B

Porsche Cayenne 92A Water Coolant Pipe Hose Line 3.0 TFSI 7P0121156B

€23.95

Part no. 5Q0122101EA

Audi A3 8V Seat Leon 5F Water Coolant Hose Line Pipe 2.0 TFSI CJXH 5Q0122101EA

€32.95

Part no. 04L121058F

Audi A3 8V A4 B8 Coolant Water Hose Pipe Line 2.0 TDI 04L121058F

€23.95

Part no. A6512000282

Water Hose Mercedes W176 W246 Diesel OM651 Cooling Coolant Pipe A6512000282

€28.95

Part no. 2284289-1

BMW F10 M5 F12 F13 M6 Coolant Hose Water Cooling Pipe Radiator 2284289

€89.95

Part no. 06M121075L

Audi A4 B9 A5 S5 F5 Water Hose Cooling Radiator Coolant Pipe 3.0 TFSI 06M121075L

€23.95

Part no. 1756703

Ford Focus Mk3 Water Coolant Radiator Pipe Hose Line CV61-8260-BB

€23.95

Part no. A2762000156

Mercedes W212 M276 Coolant Fluid Inlet Connection Flange A2762000156

€23.95

Part no. A4535010124

Smart Fortwo A453 Radiator Coolant Hose Pipe Line Tube A4535010124

€32.95

Part no. 8W0122448S

Audi A5 F5 Water Coolant Hose Line Pipe Tube 8W0122448S

€23.95

Part no. A6512030602

Mercedes W176 Coolant Pipe Engine Block Water Line Diesel OM651 A6512030602

€23.95

Part no. 6985116

BMW X5 E70 X6 E71 M57N2 Coolant Hose Pipe Auxiliary Water Pump Adapter 6985116

€23.95

Part no. 2143316

Ford Transit Connect Mk2 Water Coolant Pipe Hose Line 1.5 TDCI F1F1-8260-HE

€23.95

Part no. LR048082

Land Rover Range Rover L405 Anti Roll Bar Pump Hose Tube Pipe Line CPLA-32688-BD

€85.95

Part no. 7600554

BMW F20 F21 F30 F31 N13 N20 Radiator Coolant Hose Pipe Tube 7600554

€23.95

Part no. 5QF122101E

VW Volkswagen Tiguan 5N Coolant Hose Feed Pipe Quick Release Coupling 5QF122101E

€23.95

Part no. A2478307600

Mercedes W177 W247 Heater Water Cooling Coolant Pipe Hose Line A2478307600

€37.95

Part no. DG93-8W005-AB

Ford Mondeo Mk5 S-Max Mk2 Coolant Overflow Pipe 2.0 TDCi DG93-8W005-AB

€28.95

Part no. 7644099

BMW X5 F15 40eX N20 High Voltage Water Cooling Tube Pipe Line Hose 7644099

€32.95

Part no. 1837982

Ford Fiesta Mk7 Oil Cooler Cooling Pipe Hose Line 1.0 EcoBoost C1B1-18K359-AF

€23.95

Part no. 8629959

Mini F55 F56 F57 F60 Petrol Turbo Charger Coolant Hose Oil Pipe Line 8629959

€47.95

Part no. 6832803

MINI F55 F56 F57 F60 Coolant Hose Pipe Tube 6832803

€23.95

Part no. 2751612

Mini Cooper R55 R56 R57 R58 Engine Inlet Heater Radiator Hose 2751612

€23.95

Part no. A6512300956

Vacuum Pipe Mercedes W906 W639 Diesel OM651 Water Pump Line A6512300956

€32.95

Part no. 94810642110

Porsche Cayenne Turbo 92A Coolant Water Return Pipe Hose Tube 94810642110

€23.95

Part no. 7P5122109B

Porsche Cayenne S 92A Water Coolant Pipe Hose Line 3.0 TFSI 7P5122109B

€28.95

Part no. M8A2-8C502-BB

Range Rover Velar L560 Exhaust Fluid Pipe Hose Line 2.0 Diesel M8A2-8C502-BB

€47.95

Part no. A2045012682

Water Hose Mercedes W204 C207 W212 Coolant Radiator Pipe Line A2045012682

€23.95

Part no. 03L121101

Audi A4 B8 A5 8T A6 C7 Water Coolant Pipe Hose Line 2.0 TDI 03L121101

€23.95

Part no. A2712002352

Mercedes W204 Water Hose Radiator Coolant Cooling Pipe Line A2712002352

€23.95

Part no. 7535591

BMW Z4 Series E85 Hose Additional Water Pump Water Valve Pipe

€23.95

Part no. 7617363-1

Water Hose BMW F45 X1 F48 Mini F55 F56 F60 Radiator Engine Coolant Pipe 7617363

€28.95

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