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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Water Hose Mercedes W203 W209 M272 Expansion Tank Coolant Pipe Line A2035016382

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€22.75

Part no. 8489617

BMW U06 U10 F70 Mini U25 Engine Coolant Return Line Hose Pipe Tube 8489617

€23.95

Audi A5 8T 2.0 TDI CNHA Thermostat Housing Pipe Hose Line Tube 04L121026R

-5%

Part no. 04L121026R-1

Audi A5 8T 2.0 TDI CNHA Thermostat Housing Pipe Hose Line Tube 04L121026R

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€23.95

€22.75

Cooling Line Hose BMW F10 F11 F30 F31 N20 Engine Coolant Return Pipe 7588936

-5%

Part no. 7588936

Cooling Line Hose BMW F10 F11 F30 F31 N20 Engine Coolant Return Pipe 7588936

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€22.75

Audi A6 C8 Water Pipe Hose Line Cooling Coolant 4K0122101AT

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Part no. 4K0122101AT

Audi A6 C8 Water Pipe Hose Line Cooling Coolant 4K0122101AT

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Land Rover Discovery 4 L319 Water Coolant Pipe Hose Line Set 2.7 V6 JHB501670

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Part no. JHB501670-1

Land Rover Discovery 4 L319 Water Coolant Pipe Hose Line Set 2.7 V6 JHB501670

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Mercedes W907 Auxiliary Water Pump Coolant Hose Line Pipe 9078306901

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Part no. A9078306901

Mercedes W907 Auxiliary Water Pump Coolant Hose Line Pipe 9078306901

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VW Volkswagen Golf Mk3 Radiator Coolant Hose Pipe Line Tube 1J0122051H

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Part no. 1J0122051H

VW Volkswagen Golf Mk3 Radiator Coolant Hose Pipe Line Tube 1J0122051H

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Intake Hose Mercedes W176 Air Charge Cooler Turbo Intercooler Pipe A2465281282

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Part no. A2465281282

Intake Hose Mercedes W176 Air Charge Cooler Turbo Intercooler Pipe A2465281282

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Part no. 5A30C15

BMW X1 U11 Water Coolant Feed Line Radiator Pump Hose Line B38X 5A30C15

€23.95

BMW E90 E91 E92 LCI F10 F11 Connector Flange Pipe 7808571

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Part no. 7808571

BMW E90 E91 E92 LCI F10 F11 Connector Flange Pipe 7808571

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Part no. A1330106800

Mercedes C117 W176 AMG Water Coolant Pipe Hose Line M133 A1330106800

€42.95

Coolant Hose BMW F80 M3 F82 M4 S55 Water Pump Cooling Pipe Line 7848500

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Part no. 7848500-1

Coolant Hose BMW F80 M3 F82 M4 S55 Water Pump Cooling Pipe Line 7848500

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€53.97

Part no. 7605150

BMW F01 LCI F06 F12 F13 N55 Water Coolant Pipe Hose Line 7605150

€37.95

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

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Part no. 8K0819334Q

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

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Part no. 1921071

Ford Kuga Mk2 C520 Coolant Water Pipe Hose Line 1.5 Ecoboost F1F1-8260-EE

€23.95

Cooling Hose BMW E84 N20 Petrol Engine Radiator Water Coolant Pipe Line 7612445

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Part no. 7612445

Cooling Hose BMW E84 N20 Petrol Engine Radiator Water Coolant Pipe Line 7612445

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Part no. A2215010225

Mercedes W221 Water Hose Radiator Coolant Cooling Pipe Line A2215010225

€32.95

Part no. LK62-4090-AC

Land Rover Discovery Sport L550 Vacuum Pipe Hose Line 2.2 Diesel LK62-4090-AC

€104.95

Part no. 5A0C5A6

BMW F70 F74 U06 U10 U11 U12 Mini F65 F66 Coolant Hose Pipe Tube Line 5A0C5A6

€37.95

Part no. 7P5422881M

Porsche Cayenne S 92a Coolant Pipe Hose Tube Line 7P5422881M

€28.95

Part no. A2134300229

Mercedes W253 W213 C238 Coolant Hose Line Tube Pipe A2134300229

€42.95

Part no. LR001264

Land Rover Freelander 2 L359 Engine Breather Pipe Hose 2.2 Diesel 6G9Q-6A664-BA

€23.95

Part no. 2517705

Ford Transit Custom Engine Cooling Radiator Coolant Pipe Hose GK2Q-8A589-AC

€42.95

Part no. PIH500101

Land Rover Discovery 3 L319 Water Coolant Pipe Hose Line 2.7 PIH500101

€51.95

BMW E65 E66 Radiator Coolant Cooling Return Water Hose Pipe 730i N52 6928270

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Part no. 6928270

BMW E65 E66 Radiator Coolant Cooling Return Water Hose Pipe 730i N52 6928270

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VW Volkswagen Tiguan Mk1 2.0 TDI Water Coolant Pipe Hose 5N0122101BB

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Part no. 5N0122101BB

VW Volkswagen Tiguan Mk1 2.0 TDI Water Coolant Pipe Hose 5N0122101BB

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Water Hose Mercedes W176 W246 Heat Exchanger Cooling Coolant Pipe A2468303396

-5%

Part no. A2468303396

Water Hose Mercedes W176 W246 Heat Exchanger Cooling Coolant Pipe A2468303396

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BMW X3 F25 N47N Diesel Water Hose Radiator Coolant Cooling Pipe Line 7811132

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Part no. 8571618

BMW X3 F25 N47N Diesel Water Hose Radiator Coolant Cooling Pipe Line 7811132

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Audi Q7 4M Q8 Mk1 Engine Coolant Hose Line Tube Pipe Set 3.0 Diesel 059122471AB

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Part no. 059122471AB

Audi Q7 4M Q8 Mk1 Engine Coolant Hose Line Tube Pipe Set 3.0 Diesel 059122471AB

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BMW F10 M5 F12 M6 Coolant Hose Radiator Cooling Water Pipe Line 7846363

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Part no. 7846363-2

BMW F10 M5 F12 M6 Coolant Hose Radiator Cooling Water Pipe Line 7846363

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Part no. 7599234

BMW F07 F10 F11 F12 F13 N55 Engine Water Coolant Pipe Hose Line 7607840

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Mercedes W176 Coolant Hose Heater Line to Water Pump Return A2468302996

-15%

Part no. A2468302996

Mercedes W176 Coolant Hose Heater Line to Water Pump Return A2468302996

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Mercedes W205 Water Hose Radiator Coolant Cooling Pipe Line Petrol A2055016100

-5%

Part no. A2055016100

Mercedes W205 Water Hose Radiator Coolant Cooling Pipe Line Petrol A2055016100

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Mercedes W205 Water Hose Radiator Coolant Cooling Pipe Line A2055011201

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Part no. A2055011201

Mercedes W205 Water Hose Radiator Coolant Cooling Pipe Line A2055011201

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Audi A6 C8 Q5 FY Q7 4M Water Hose Coolant Pipe Line 3.0 TDI 059121064N

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Part no. 059121064N

Audi A6 C8 Q5 FY Q7 4M Water Hose Coolant Pipe Line 3.0 TDI 059121064N

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€28.01

Land Rover Discovery Sport L550 Water Coolant Hose Pipe Tube Line G4D3-8A512-CB

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Part no. LR076780

Land Rover Discovery Sport L550 Water Coolant Hose Pipe Tube Line G4D3-8A512-CB

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Audi A4 S4 B8 S5 8T Water Hose Radiator Coolant Pipe Line 3.0 TFSI 06E121045AS

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Part no. 06E121045AS

Audi A4 S4 B8 S5 8T Water Hose Radiator Coolant Pipe Line 3.0 TFSI 06E121045AS

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€37.17

Volkswagen Transporter T5 Coolant Hoses Water Cooling Pipe 2.0 TDI 7E0121101B

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Part no. 7E0121101B-1

Volkswagen Transporter T5 Coolant Hoses Water Cooling Pipe 2.0 TDI 7E0121101B

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Part no. 8571621

Water Hose BMW X3 F25 X4 F26 Diesel Cooling Coolant Radiator Pipe Line 3168490

€23.95

VW Volkswagen Golf 5 6 1.6 2.0 TDI Water Hose Coolant Pipe Line 1K0122051HK

-5%

Part no. 1K0122051HK

VW Volkswagen Golf 5 6 1.6 2.0 TDI Water Hose Coolant Pipe Line 1K0122051HK

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Part no. QEH500443

Land Rover Discovery 3 L319 Water Coolant Pipe Hose Line 2.7 QEH500443

€23.95

Mercedes W176 W246 Heat Exchanger Water Coolant Hose Pipe Line A2468308800

-5%

Part no. A2468308800

Mercedes W176 W246 Heat Exchanger Water Coolant Hose Pipe Line A2468308800

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Part no. 9V61-8286-CC

Ford Kuga C520 Engine Coolant Pipe Hose Tube Line 2.0 TDCi Diesel 9V61-8286-CC

€23.95

Porsche Cayman 987 Coolant Hose Feed Pipe Line Tube 98710627002

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Part no. 98710627002

Porsche Cayman 987 Coolant Hose Feed Pipe Line Tube 98710627002

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Part no. CPLA-9P924-CB

Land Range Rover L494 Vogue L405 Water Coolant Pipe Hose Line CPLA-9P924-CB

€23.95

Audi A6 C8 Engine Coolant Pipe Water Hose Cooling Line Tube 4K0819374Q

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Part no. 4K0819374Q

Audi A6 C8 Engine Coolant Pipe Water Hose Cooling Line Tube 4K0819374Q

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Part no. PZ31-180476-PAC

Ford Transit Custom Water Coolant Hose Pipe 2.0 Diesel PZ31-180476-PAC

€42.95

Coolant Hose Mercedes W251 Diesel OM642 Water Pump Radiator Line A2515018482

-5%

Part no. A2515018482

Coolant Hose Mercedes W251 Diesel OM642 Water Pump Radiator Line A2515018482

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

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Part no. 7612444

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

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Land Rover Discovery Sport L550 Coolant Hose Pipe Line GJ32-8286-BB

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Part no. GJ32-8286-BB

Land Rover Discovery Sport L550 Coolant Hose Pipe Line GJ32-8286-BB

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€22.75

Bleed Hose Mercedes W205 Coolant Expansion Tank To Radiator Line A2055017601

-15%

Part no. A2055017601

Bleed Hose Mercedes W205 Coolant Expansion Tank To Radiator Line A2055017601

Promo price

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€24.61

Part no. 06L121497D

Audi A5 8T A4 B8 Water Coolant Pipe Hose Turbocharger 2.0 TFSI 06L121497D

€47.95

BMW E90 LCI E91 LCI E92 LCI Radiator Water Cooling Hose Pipe Tube Line 7599450

-15%

Part no. 7599450

BMW E90 LCI E91 LCI E92 LCI Radiator Water Cooling Hose Pipe Tube Line 7599450

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€28.01

Part no. 03L121157-1

Audi A4 B8 A5 8T A6 C6 Water Coolant Pipe Hose Line 2.0 TDi Diesel 03L121157

€23.95

Part no. 6C11-8W005-FB

Ford Transit Mk7 Water Hose Engine Cooling Radiator Coolant Pipe 6C11-8W005-FB

€28.95

VW Volkswagen Golf 5 6 1.6 2.0 TDI Water Hose Coolant Pipe Line 1K0121070CE

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Part no. 1K0121070CE

VW Volkswagen Golf 5 6 1.6 2.0 TDI Water Hose Coolant Pipe Line 1K0121070CE

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€23.95

€22.75

Part no. 1K0122109BE

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

€23.95

Part no. 1K0122447T

Volkswagen Audi Seat Skoda Water Hose Radiator Coolant Pipe Line 1K0122447T

€23.95

Audi Q3 SE Water Hose Cooling Coolant Radiator Pipe Line Hose 03L121157Q

-5%

Part no. 03L121157Q

Audi Q3 SE Water Hose Cooling Coolant Radiator Pipe Line Hose 03L121157Q

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€23.95

€22.75

Part no. 1K0133366BK

Audi A3 8P FL TT 8J 1.8 Petrol CDAA Water Coolant Connection Hose 1K0133366BK

€23.95

Part no. 99610622215

Porsche Cayman 987C Coolant Hose Return Pipe Line 99610622215

€23.95

Part no. 7639026

Cooling Hose BMW E84 N20 Petrol Engine Radiator Water Coolant Pipe Line 7639026

€23.95

Mercedes W177 OM608 Diesel Engine Coolant Thermostat Pipe Line Hose A6082000600

-15%

Part no. A6082000600

Mercedes W177 OM608 Diesel Engine Coolant Thermostat Pipe Line Hose A6082000600

Promo price

€32.95

€28.01

Coolant Hose Mercedes W204 W906 Diesel OM651 Thermostat Connector A6512030300

-5%

Part no. A6512030300

Coolant Hose Mercedes W204 W906 Diesel OM651 Thermostat Connector A6512030300

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VW Tiguan 5N Coolant Water Flange Housing Connector 2.0 TDI 04L121131AB

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Part no. 04L121131AB-1

VW Tiguan 5N Coolant Water Flange Housing Connector 2.0 TDI 04L121131AB

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Part no. 5A30C14

BMW U06 X1 U11 Water Coolant Feed Line Radiator B38X 5A30C14

€23.95

Part no. 7N0820721

Volkswagen Sharan 7N A/C Air Con Refrigerant Hose Pipe Line 7N0820721

€28.95

Audi A4 B9 2.0 TDI DETA Diesel Water Coolant Hose Pipe Tube Line 04L121071G

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Part no. 04L121071G

Audi A4 B9 2.0 TDI DETA Diesel Water Coolant Hose Pipe Tube Line 04L121071G

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

-5%

Part no. A6071400400

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

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Coolant Water Hose BMW E65 730i N52 Engine Water Valve Pipe Hose Supply 6938433

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Part no. 6938433

Coolant Water Hose BMW E65 730i N52 Engine Water Valve Pipe Hose Supply 6938433

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Part no. 03G121473

Audi A4 S4 Avant 8E Water Coolant Pipe Hose 2.0 Diesel Engine Vent 03G121473

€23.95

Part no. 5A0C594

BMW X1 U11 Electric Pump Coolant Hose Line Pipe 5A0C594

€28.95

Part no. 8654850

BMW G20 G21 Charger Electronics Coolant Circuit Hose Tube Line Pipe 8654850

€23.95

Part no. 6Y0122157B

VW Volkswagen Polo 9N Coolant Hose Tube Line Pipe 1.2 Petrol BMM 6Y0122157B

€23.95

Part no. 8J0121447F

Audi TT 8J 1.8 Petrol CDAA Engine Coolant Vent Hose Pipe 8J0121447F

€23.95

Part no. 06N121075C

Audi A4 B9 A5 F5 A6 A7 C8 A8 D5 Q5 F8 Radiator Water Hose Pipe Line 06N121075C

€47.95

Audi Q7 4M Water Coolant Hose Tube Line Pipe 3.0 TDI Diesel Set 4M0819927CP

-40%

Part no. 4M0819927CP

Audi Q7 4M Water Coolant Hose Tube Line Pipe 3.0 TDI Diesel Set 4M0819927CP

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€34.17

Part no. K8D2-8286-AB

Land Rover Discovery Sport L550 Coolant Hose Thermostat Line Pipe K8D2-8286-AB

€42.95

Audi A6 C8 Q7 4M Coolant Water Pipe Hose Line Tube 3.0 TDI 059121085Q

-15%

Part no. 059121085Q

Audi A6 C8 Q7 4M Coolant Water Pipe Hose Line Tube 3.0 TDI 059121085Q

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€28.01

Part no. HPLA-8286-DA

Range Rover Evoque L538 Radiator Coolant Hose Pipe Line 3.0 Diesel HPLA-8286-DA

€23.95

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

-5%

Part no. 1K0122101JR

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

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

-5%

Part no. 7800408

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

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€22.75

Mercedes-Benz Vito Viano W639 OM646 EGR Exhaust Gas Cooling Pipe A6461400208

-5%

Part no. A6461400208

Mercedes-Benz Vito Viano W639 OM646 EGR Exhaust Gas Cooling Pipe A6461400208

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€23.95

€22.75

Part no. 1K0122101AF

Audi A3 8P Engine Coolant Hose Pipe Tube Line 2.0 Petrol AXW 1K0122101AF

€23.95

Part no. 7509984

BMW F10 F11 X5 F15 X6 F16 Radiator Coolant Water Hose Pipe Line 7509984

€28.95

BMW F10 F11 F12 F13 Filler Neck Expansion Tank Coolant Hose Petrol 7591692

-5%

Part no. 7591692

BMW F10 F11 F12 F13 Filler Neck Expansion Tank Coolant Hose Petrol 7591692

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€23.95

€22.75

Range Rover Evoque L538 Water Pipe Coolant Hose Line 2.2 TDCI BJ32-8274-AA

-5%

Part no. LR024243

Range Rover Evoque L538 Water Pipe Coolant Hose Line 2.2 TDCI BJ32-8274-AA

Promo price

€23.95

€22.75

Coolant Hose Mercedes C238 M256 Expansion Tank Radiator Line A2575011100

-15%

Part no. A2575011100

Coolant Hose Mercedes C238 M256 Expansion Tank Radiator Line A2575011100

Promo price

€32.95

€28.01

Ford Transit Mk7 Coolant Hose Cooling Water Line Pipe Diesel CC11-3691-AB

-5%

Part no. CC11-3691-AB

Ford Transit Mk7 Coolant Hose Cooling Water Line Pipe Diesel CC11-3691-AB

Promo price

€23.95

€22.75

Part no. 8841814

BMW U06 Active Tourer X1 U11 Coolant Water Hose Pipe Line B38X Engine 8841814

€23.95

Mercedes W176 Water Cooling Coolant Pipe Hose Line 1.6 Petrol A2702031582

-15%

Part no. A2702002400

Mercedes W176 Water Cooling Coolant Pipe Hose Line 1.6 Petrol A2702031582

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€28.95

€24.61

Part no. 8W2819350L

Audi A4 S4 B9 A5 F5 Engine Water Coolant Hose Pipe Line 2.0 TFSI 8W2819350L

€23.95

VW Volkswagen Touran 1T 1.4 TSI CAVC Water Coolant Pipe Hose Line 1K0121070CA

-5%

Part no. 1K0121070CA

VW Volkswagen Touran 1T 1.4 TSI CAVC Water Coolant Pipe Hose Line 1K0121070CA

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Part no. 99610622554

Porsche Boxster 986 Engine Coolant Water Pipe Breather Hose Left N/S 99610622554

€32.95

Audi A3 8V Water Coolant Engine Cooling Flange Pipe Hose Line 5Q0121109S

-5%

Part no. 5Q0121109S

Audi A3 8V Water Coolant Engine Cooling Flange Pipe Hose Line 5Q0121109S

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Part no. JB3G-8B274-AG

Ford Ranger T6 Engine Coolant Hose Pipe Line 2.0 Bi-Turbo Diesel JB3G-8B274-AG

€23.95

Part no. 8W0122055BN-2

Audi A4 B9 A5 F5 Coolant Pipe Radiator Hose Line Tube 2.0 Petrol 8W0122055BN

€23.95

Mercedes C218 C218 W221 Water Coolant Control Valve M273 A2722000054

-2%

Part no. A2722000054

Mercedes C218 C218 W221 Water Coolant Control Valve M273 A2722000054

Promo price

€23.95

€23.45

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