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 A6 C7 3.0 TDI CLAA Water Coolant Pipe Hose Line Tube 4H0121449Q

€23.95

Part no. 7830711

BMW E46 Engine Cooling Water Coolant Hose Pipe Tube Line 7830711

€47.95

Part no. 7575435

Water Hose BMW F10 F11 F12 F13 Petrol Engine N63 Coolant Pipe Line 7575435

€23.95

Part no. 1K0122101KP-1

Audi Tt 8j VW Golf 1K Water Hose Cooling Coolant Radiator Pipe Line 1K0122101KP

€28.95

Part no. 03L121157AQ

Audi A4 B8 A5 8T 2.0 TDI Water Hose Cooling Radiator Pipe Line 03L121157AQ

€23.95

Part no. 8599398

BMW X3 G01 X4 G02 Diesel Coolant Radiator Line Pipe Hose Tube 8599398

€42.95

Part no. 04L121157

Audi A4 B8 A6 C7 Water Coolant Pipe Hose Line Tube Right O/S 2.0 TDI 04L121157

€23.95

Part no. L8D2-8D144-AC

Land Rover Discovery Sport L550 Coolant Water Hose Pipe 1.5 L8D2-8D144-AC

€37.95

Part no. 2K0121157H

Volkswagen Caddy 2K Engine Coolant Hose Tube Line Pipe 2.0 Diesel 2K0121157H

€23.95

Part no. 9894760

BMW X3 G01 X4 G02 M40iX B58D Water Coolant Hose Pipe Line 9894760

€37.95

Part no. 04L121065AJ

Volkswagen Seat Skoda Audi 2.0 TDI Water Coolant Pipe Hose Line 04L121065AJ

€23.95

Part no. 8571611

BMW X3 F25 X4 F26 Engine Water Coolant Hose Pipe 30dX 35dX N57 8571611

€37.95

Part no. A1111400140

Mercedes-Benz C 180 W203 M111 EGR Valve Bracket Mount Holder A1111400140

€23.95

Part no. A2125015782

Coolant Pipe Mercedes W212 W218 Expansion Overflow Tank Cooling Hose A2125015782

€23.95

Part no. L8D2-10D662-AD

Land Rover Discovery Sport L550 Coolant Water Hose Pipe 1.5 PHEV L8D2-10D662-AD

€37.95

Part no. 6C0122109E

Audi A1 8X 1.6 TDI Diesel Engine Water Coolant Pipe Hose Line Tube 6C0122109E

€23.95

Part no. 5WA145828F

Skoda Octavia VR Audi TT VW Arteon Seat Leon Turbo Intercooler Pipe 5WA145828F

€23.95

Part no. 1K0121063J

Audi TT 8J Water Coolant Hose Pipe Line Tube 1K0121063J

€23.95

Part no. A2138309000

Mercedes W213 Engine Coolant Water Pipe Hose Line A2138309000

€23.95

Part no. A2742001682-1

Mercedes W204 M274 Petrol Engine Coolant Hose Water Line Pipe A2742001682

€23.95

Part no. A2742030302

Cooling Hose Mercedes W204 W205 W212 Water Coolant Pipe Line A2742030302

€23.95

Part no. M8D2-18C266-BB

Range Rover Evoque L551 Water Coolant Hose Pipe Line 2.0 M8D2-18C266-BB

€66.95

Part no. A2315001075

Mercedes R231 Coolant Cooling Hose Pipe Line Right OS A2315001075

€32.95

Part no. 06E121546

Audi S4 B8 A4 B8 S5 8T Water Coolant Hose Pipe Line 3.0 TFSI 06E121546

€23.95

Part no. 4G0121481AL

Audi A6 Avant A7 Sportback Water Coolant Hose Pipe 4G0121481AL

€37.95

Part no. 6911001

BMW E60 E60N E61 E61N E63 Hose For Water Valve And Radiator

€23.95

Part no. A2108325694

Mercedes-Benz E-Class W210 Diesel CDI Water Pipe Hose Heater Valve A2108325694

€23.95

Part no. 7827840

BMW X5 F15 X5 F25 X4 F26 EGR Cooler Line Hose Tube Pipe 7827840

€56.95

Part no. 06E121545

Audi S4 B8 A4 B8 S5 8T Water Coolant Hose Pipe Line 3.0 TFSI 06E121545

€23.95

Part no. 2Q0121109B

Volkswagen Polo Mk6 Audi A1 GB Mk2 VW Water Coolant Hose Pipe Line 2Q0121109B

€23.95

Part no. 6923944

BMW 5 6 Series E60 E60N E61 E61N LCI E63 Hose Additional Water Pump Water Valve

€23.95

Part no. 7509965

Coolant Hose BMW X5 E53 Petrol Engine N62 Cooling System Water Line 7509965

€23.95

Part no. A2742002582

Water Hose Mercedes W212 X253 M274 Cooling Coolant Pipe Line Tube A2742002582

€42.95

Part no. 7598248

BMW F10 F12 F13 Coolant Cooling Flexible Hose Pipe Line N55 Petrol 7598248

€23.95

Part no. 7L8121051G

Audi Q7 Engine Cooling Radiator Coolant Hose Pipe 3.0 TDI 7L8121051G

€47.95

Part no. 04L121026AF

Audi Q2 GA Diesel Thermostat Coolant Regulator Connector Pipe Hose 04L121026AF

€28.95

Part no. A2095013382

Water Hose Mercedes CL203 W209 OM646 Engine Cooling Coolant Pipe A2095013382

€23.95

Part no. 5Q0122051AF-2

VW Audi Seat Skoda Water Coolant Hose Pipe Line 2.0 TSI 5Q0122051AF

€56.95

Part no. LR029140

Land Rover Range Rover L322 L405 Coolant Pipe Hose Line 4.4 TDV8 BH42-8260-AD

€37.95

Part no. 2HJ121045D

VW Volkswagen Amarok NF Coolant Cooling Pipe Hose Line Diesel Engine 2HJ121045D

€32.95

Part no. GX73-8A589-AF

Jaguar Xf X260 Engine Water Coolant Hose Pipe Tube Line 2.0 Diesel GX73-8A589-AF

€23.95

Part no. 7509966

Coolant Hose BMW X5 E53 Petrol Engine N62 Cooling System Water Line 7509966

€23.95

Part no. A2055017984

Coolant Hose Mercedes W205 Diesel M651 Oil Cooler Water Hose A2055017984

€28.95

Part no. 80A145926BP

Audi Q5 FY Coolant Hose Tube Line Pipe 2.0 Diesel 80A145926BP

€23.95

Part no. 94810602260

Porsche Cayenne Turbo 92A 4.8 V8 Cooler Coolant Pipe Hose Line 94810602260

€184.95

Part no. 7P5121070R

Porsche Cayenne S 92A Engine Coolant Hose Pipe Line Right O/S 7P5121070R

€37.95

Part no. 07K121055A

Audi RS3 8P RSQ3 8U Engine Cooling System Coolant Hose Pipe 2.5 TFSI 07K121055A

€42.95

Part no. 1K0121101AA

Volkswagen Caddy 2k Radiator Coolant Hose Tube Line Pipe 2.0 Diesel 1K0121101AA

€28.95

Part no. 6R0122447AE

Seat Ibiza 6J Engine Coolant Hose Tube Line Pipe 1.4 CGGB Petrol 6R0122447AE

€23.95

Part no. 5A0C5A4

BMW F70 F74 Gran Coupé Mini F65 F66 Coolant Water Pipe Hose Line 5A0C5A4

€51.95

Part no. 9886650

BMW F70 U06 X1 U11 X2 U10 Battery Coolant Pipe Cooling Hose Tube Line 9886650

€32.95

Part no. 7812515

BMW E90 E91 E92 Radiator Bottom Coolant Hose Line Tube Pipe 7812515

€51.95

Part no. A2782000551

Mercedes W212 M157 Water Coolant Return Pipe Hose Line A2782000551

€23.95

Part no. 5N0122051BD

Audi Q3 8u Engine Water Coolant Cooling Pipe Line 2.0 TFSI Petrol 5N0122051BD

€23.95

Part no. 9X23-18C553-CB

Jaguar XF X250 Engine Water Coolant Heater Pipe 3.0 Petrol 9X23-18C553-CB

€23.95

Part no. A2702001800

Mercedes X156 Water Pump Thermostat Housing Pipe Hose Connector M270 A2702001800

€85.95

Part no. 8577059

Water Hose BMW X3 G01 X4 G02 Diesel Coolant Cooling Radiator Pipe Line 8577059

€28.95

Part no. 7E0122051E-1

Volkswagen Transporter T5 Coolant Hose Radiator Water Pipe 2.0 TDI 7E0122051E

€23.95

Part no. 7646898-1

Mini F55 F56 F67 F60 Coolant Expansion Tank Cylinder Hose Pipe Line B38 7646898

€23.95

Part no. 4G0122101B

Audi A6 C7 3.0 TDI Diesel Radiator Upper Hose Line Pipe Left N/S 4G0122101B

€23.95

Part no. 3C0122073EG

Audi TT Mk2 8J Water Coolant Pipe Hose Line 2.0 TFSI 3C0122073EG

€23.95

Part no. 8W0122055BD

Audi A4 B9 A5 F5 Water Coolant Radiator Pipe Hose Line 3.0 TDI 8W0122055BD

€23.95

Part no. 1384147

Ford Focus Mk2 Radiator Hose Cooling Pipe 2.0 TDCi Diesel 3M5H-8286-CM

€23.95

Part no. GJ32-8286-BB-1

Land Rover Range Rover Evoque L538 Coolant Hose Pipe Tube Line GJ32-8286-BB

€23.95

Part no. 04E122447BF

Skoda Karoq VW Golf Mk7 Water Coolant Pipe Hose Line 1.5 TSI Petrol 04E122447BF

€23.95

Part no. K1BY8C351SF

Ford Fiesta Mk8 Puma Radiator Coolant Pipe Hose Line 1.5 Petrol K1BY-8C351-SF

€32.95

Part no. 6R0121109M

Seat Ibiza 6J Engine Coolant Cooling Hose Pipe Tube 1.4 CGGB Petrol 6R0121109M

€23.95

Part no. 5A6E1A9

BMW F70 F74 F78 Mini F66 F67 Radiator Upper Coolant Hose Water Pipe Line 5A6E1A9

€66.95

Part no. 7592652

Water Hose BMW F10 F11 F12 F13 N63 Petrol Cooling Coolant Pipe Line 7592652

€28.95

Part no. 6916090

BMW 5 6 Series E60 E61 E63 E64 Pipe Hose For Radiator And Engine Return 6916090

€23.95

Part no. A2742001682

Coolant Hose Mercedes W204 Petrol M274 Engine Cooling Water Line A2742001682

€32.95

Part no. LR125254

Range Rover Sport L494 Cooling Water Pipe Hose Line 3.0TD MHEV LR125254

€32.95

Part no. 04E122447BG-1

Skoda Karoq VW Golf Mk7 Water Coolant Pipe Hose Line 1.5 TSI Petrol 04E122447BG

€23.95

Part no. 93866075

Water Hose Renault Trafic 3 Opel Vivaro B Coolant Pipe Line 93866075

€23.95

Part no. A1725011982

Mercedes SLK R172 M271 Water Coolant Pipe Cooling Hose A1725011982 A1728320294

€42.95

Part no. 1562831

Ford Fiesta Mk7 Engine Coolant Hose Tube Line Pipe 1.6 TDCI 8V21-8C012-CD

€23.95

Part no. A4535011724

Smart 453 Fortwo Radiator Coolant Line Pipe Tube Hose A4535011724

€23.95

Part no. K8D2-8B504-AB

Land Rover Discovery Sport L550 Intercooler Water Pump Cooler Pipe K8D2-8B504-AB

€23.95

Part no. 7796870-1

Coolant Hose BMW E81 E87 LCI Diesel N47 Radiator Bottom Pipe Line 7796870

€23.95

Part no. 8689864

Coolant Hose BMW G20 G21 Z4 G29 Petrol B46 B48 Heater Return Line 8689864

€37.95

Part no. K1BY8B273SG

Ford Fiesta Mk8 Puma Radiator Coolant Pipe Hose Line 1.5 Petrol K1BY-8B273-SG

€32.95

Part no. A4478320323

Mercedes W447 Water Hose Cooling Radiator Coolant Pipe Line A4478320323

€32.95

Part no. 1K0122109BE

VW Passat B6 Audi A3 8P Water Hose Radiator Coolant Pipe Line 1K0122109BE

€23.95

Part no. 1K0122101JM-1

Audi TT Black E VW Golf GTI 5K Coolant Hose Pipe Line 2.0 Petrol 1K0122101JM

€23.95

Part no. 2029105

Ford Ranger MK3 Cooling System Hose Asy EB3G-7H255-AF

€23.95

Part no. 9X23-8K534-BB

Jaguar XF X250 Coolant Water Hose Pipe Line 3.0 V6 Diesel Engine 9X23-8K534-BB

€23.95

Part no. 5A5ADF9

BMW F74 M235 X1 U11 X2 U10 M35iX B48R Coolant Hose Water Pipe Line 5A5ADF9

€47.95

Part no. 7645522

Mini F60 BMW F45 X1 F48 B38X Water Coolant Hose Pipe Venting Line 7645522

€23.95

Part no. YC1Q-8K512-AB

Radiator Hose Ford Transit MK6 2.4 Tdci Coolant Water Line YC1Q-8K512-AB

€23.95

Part no. 8W0122101B

Water Hose Audi A4 B9 A5 F5 Cooling Coolant Radiator Pipe Line 8W0122101B

€23.95

Part no. 94810645721

Porsche Cayenne Turbo 92a Engine Coolant Hose Tube Pipe Line Channel 94810645721

€184.95

Part no. 9884826

BMW G20 G23 Engine Water Coolant Hose Pipe Line B46 B48 9884826

€23.95

Part no. 1K0122101JQ-1

VW Volkswagen Touran 1T Audi A3 8P Coolant Water Hose Pipe Tube Line 1K0122101JQ

€47.95

Part no. 9308346

BMW G11 G30 G31 Engine Water Coolant Feed Hose Pipe Tube Line 2.0 Petrol 9308346

€23.95

Part no. 8091174

Coolant Pipe BMW X3 M F97 X4 M F98 Turbocharger Flow Line Hose Pipe 8091174

€94.95

Part no. 04B121064

Volkswagen VW Polo 6C Water Coolant Pipe Hose Line 1.4 TDI Diesel 04B121064

€47.95

Part no. M8D2-18K579-AB

Land Rover Discovery Sport L550 Coolant Water Hose Pipe 1.5 PHEV M8D2-18K579-AB

€23.95

Part no. 4H2Q8592BE

Land Rover Range Sport L320 3.0 D Water Hose Coolant Pipe Line 4H2Q8592BE

€23.95

Part no. A2055061760

Mercedes W205 C253 X253 Engine Water Coolant Pipe Hose Petrol A2055061760

€94.95

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