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.

More information

Find it faster

Match to your vehicle

Make

Volkswagen Golf R Mk7 Coolant Hose Tube Quick Coupling 2.0 TFSI 5Q0122101CJ

€56.95

Part no. A6542039600-2

Mercedes W205 W447 OM654 Water Hose Engine Cooling Coolant Pipe Part A6542039600

€23.95

Part no. 059121071DK

Volkswagen Amarok 2H Engine Coolant Pipe Hose Tube 3.0 Diesel DDXE 059121071DK

€23.95

Part no. 1K0122447HB

Audi A3 8P Water Coolant Pipe Hose Line 1.4 TFSI CAXC 1K0122447HB

€37.95

Part no. 5Q0121064AG

Audi A3 8V Engine Water Coolant Pipe Hose Line 2.0 TDI 5Q0121064AG

€23.95

Part no. 5Q0121070BQ-1

Audi S3 8V Water Hose Engine Coolant Cooling Pipe Line Tube 5Q0121070BQ

€23.95

Part no. 6Q0122051BG

Skoda Fabia Mk1 6Y Water Hose Radiator Coolant Pipe Line 1.9 Diesel 6Q0122051BG

€23.95

Part no. A2742000053

Mercedes W204 C207 W212 Cooling Engine Water Coolant Hose Pipe A2742000053

€28.95

Part no. 3Q0122051BL

Skoda Karoq Coolant Hose Water Pipe Hose Line 2.0 TDI 3Q0122051BL

€47.95

Part no. 7591692

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

€23.95

Part no. 4G0122109A

Audi A7 4G Water Cooling Coolant Hose Pipe Front Left N/S 3.0 TDI 4G0122109A

€23.95

Part no. 5Q0122051AN

Volkswagen Golf Mk7 Audi A3 8V Coolant Hose Pipe 2.0 TSI TFSI 5Q0122051AN

€75.95

Part no. 5Q0121070BC

Audi Q3 8U Water Hose Engine Coolant Cooling Pipe Line 2.0 TDI 5Q0121070BC

€23.95

Part no. 8E0121109Q

Audi A4 B7 Water Pipe Engine Cooling Radiator Coolant Hose 3.2 Petrol 8E0121109Q

€23.95

Part no. 3C0122447BJ

Volkswagen Golf Mk6 Water Coolant Pipe Hose Line 2.0 TDI Diesel 3C0122447BJ

€94.95

Part no. GJ32-8C481-AA

Land Rover Discovery Sport L550 Water Coolant Pipe Line GJ32-8C481-AA

€23.95

Part no. 99611323956

Porsche Carrera 996 Engine Coolant Air Pipe Hose Line 9603 Petrol 99611323956

€28.95

Part no. 05L121444H

Skoda Karoq Engine Water Coolant Pipe Hose Line 2.0 TDI 05L121444H

€51.95

Part no. 1K0122157AN

VW Golf Mk5 V Mk6 VI Petrol Engine Water Coolant Pipe Hose Line 1K0122157AN

€23.95

Part no. 5K0122051AA

VW Volkswagen Caddy Maxi 2K Engine Cooling Hose Tube Pipe Line 5K0122051AA

€56.95

Part no. A2468303396

Water Hose Mercedes W176 W246 Heat Exchanger Cooling Coolant Pipe A2468303396

€23.95

Part no. 9007196B

Land Rover Discovery 4 L319 Coolant Hose Pipe Line Tube Engine Top 9007196B

€28.95

Part no. A1332030002

Mercedes W176 A45 AMG Coolant Hose Cooling Water Pipe Line A1332030002

€28.95

Part no. 1K0122051HA-1

VW Volkswagen Golf 5 6 1.6 2.0 TDI Water Hose Coolant Pipe Line 1K0122051HA

€23.95

Part no. 8645480

BMW X1 E84 Mini F55 F56 F60 Water Hose Radiator Engine Coolant Pipe Line 2367292

€23.95

Part no. 75164140

BMW E60 N53 Petrol Thermostat Coolant Hose Line Tube Pipe 7516414070

€23.95

Part no. 9119178

BMW F10 F11 F01 F02 N57 Diesel Return Hose Pipe Cooling Water 9119178

€23.95

Part no. A1332000252

Mercedes W176 Water Circulation Feed Line Hose Tube Pipe A1332000252

€32.95

Part no. 8054852

Coolant Hose BMW X3 M F97 X4 M F98 Water Pump Cooling Pipe Line Hose 8054852

€85.95

Part no. 6R0121109K

Seat Ibiza 6j Mk4 Radiator Coolant Water Hose Pipe Line 1.4 TSI 6R0121109K

€23.95

Part no. A6395017482

Water Hose Mercedes Vito Viano W639 Cooling Coolant Pipe Line OM651 A6395017482

€23.95

Part no. 06E121498A

Audi A8 D3 Engine Coolant Pipe Hose Line 3.2 FSI BPK 06E121498A

€42.95

Part no. 1K0122073GE

Audi A3 8P VW Golf Mk6 Water Hose Cooling Coolant Radiator Pipe Line 1K0122073GE

€32.95

Part no. 4K0145920S

Audi A6 C8 Coolant Water Pipe Hose Line 50 TFSIe 4K0145920S

€23.95

Part no. 99610621653

Porsche Carrera 996 Engine Coolant Pipe Connection Piece Petrol 9603 9961062168R

€56.95

Part no. 7840661

BMW 3 Series E90 E91 E92 M3 S65 Radiator Bottom Thermostat Coolant Hose 7840661

€23.95

Part no. A1725010182

Coolant Hose Mercedes SLK R172 Petrol M271 Radiator Line Left N/S A1725010182

€28.95

Part no. KK31-18N252-GG

Ford Transit Mk8 Coolant Hose Pipe Line 2.0 Diesel KK31-18N252-GG

€23.95

Part no. A2742001651

Mercedes W205 Petrol Engine Coolant Hose Water Line Pipe A2742001651

€23.95

Part no. 1799007

Ford Transit Mk7 Heater Water Coolant Pipe Hose Line 2.2 Diesel CC11-18K580-AD

€23.95

Part no. 8650087

BMW X3 G01 G02 G05 G06 G07 G20 G21 Turbo Coolant Return Line M40i B58D 8650087

€23.95

Part no. 1K0121086AF

Audi A3 8P VW Golf Mk6 Coolant Hose Pipe Line Diesel 2.0 TDI 1K0121086AF

€28.95

Part no. 4K0121051L

Audi A6 C8 Water Coolant Pipe Hose Line 50 TFSIe 4K0121051L

€23.95

Part no. 079121065M

Audi A4 B6 4.2 Petrol Coolant Pipe Cooler Water Hose 079121065M

€28.95

Part no. 7500750

BMW X5 Series E53 M62 4.4i 4.6is Cooling System Water Radiator Hose 7500750

€23.95

Part no. 06F122101A

VW Volkswagen Golf Mk6 VI Coolant Water Pipe Hose Line 06F122101A

€23.95

Part no. 6R0121109N

Seat Ibiza 6J Cordoba 6L VW Polo 6R Water Coolant Pipe Hose Tube Line 6R0121109N

€23.95

Part no. A2048305596

Water Pipe Mercedes W204 S204 OM646 Cooling Coolant Hose Line A2048305596

€23.95

Part no. 1K0122073ER

VW Golf Mk5 Audi A3 8P Water Hose Cooling Coolant Radiator Pipe Line 1K0122073ER

€23.95

Part no. 7591101

BMW F01 F02 F03 Water Coolant Return Pipe Hose Line N74 Petrol Engine 7591101

€28.95

Part no. 1K0122109AS

Audi A3 8P Engine Water Coolant Pipe Hose Line 1.4 TFSI CAXC Petrol 1K0122109AS

€23.95

Part no. 9873682

Water Hose Mini F54 F60 LCI B48E Engine Coolant Cooling Pipe Line 9873682

€28.95

Part no. 4K0145919P

Audi A6 C8 Expansion Tank Water Coolant Pipe Hose Line 50 TFSIe 4K0145919P

€23.95

Part no. 1K0122096J

Seat Leon II VW Golf MK5 Audi A3 8P Water Hose Coolant Pipe Petrol 1K0122096J

€23.95

Part no. 1380563

Ford Transit Custom Coolant Hose Tube Line Pipe 2.2 TDCi Diesel 6C1Q-8B535-AF

€23.95

Part no. 9299619

Water Hose BMW G30 G31 G11 G32 G15 Radiator Water Coolant Pump Pipe Line 9299619

€23.95

Part no. 1K0122157KD

VW Golf Mk5 Audi A3 8P Radiator Water Coolant Pipe Hose 1K0122157KD

€42.95

Part no. 7591100

BMW F01 F02 F03 Cooling System Supply Hose Pipe Line N74 Petrol Engine 7591100

€28.95

Part no. 8W0819376E

Audi A4 B9 A5 F5 Water Hose Cooling Coolant Pipe Line 3.0 TFSI Petrol 8W0819376E

€23.95

Part no. 8K1819376J

Audi A5 8T 2.0 TFSI Water Hose Cooling Coolant Radiator Pipe Line 8K1819376J

€23.95

Part no. 6Q0122101AP

Skoda Fabia Mk1 6Y Water Hose Cooling Coolant Pipe Line 1.9 Diesel 6Q0122101AP

€23.95

Part no. 8R0121081AQ

Audi Q5 8R Expansion Coolant Radiator Hose Pipe Tube Line Cooling 8R0121081AQ

€23.95

Part no. 7838215

Water Pipe BMW E90 E92 E93 M3 Hose Heater Return Coolant Line 7838215

€23.95

Part no. A2742000782

Coolant Hose Mercedes W204 Petrol M274 Engine Cooling Water Line A2742000782

€32.95

Part no. A2435000500

Mercedes H243 Water Hose Radiator Coolant Cooling Pipe Line A2435000500

€28.95

Part no. 8656444

BMW i3 I01 Water Hose Cooling Coolant Pipe Line Radiator 8656444

€23.95

Part no. A1645014782

Mercedes W164 Water Radiator Coolant Hose Pipe Line OM642 Diesel A1645014782

€23.95

Part no. 059121131J

Audi A8 D4 Q7 4L Coolant Hose Line Tube Pipe 3.0 TDI 059121102C 059121053J

€23.95

Part no. 4K0145934L

Audi A6 C8 Water Coolant Pipe Hose Line 50 TFSIe 4K0145934L

€23.95

Part no. 5Q0122096T

Volkswagen VW Passat B8 Golf Mk8 Water Coolant Hose Pipe 2.0 TDI 5Q0122096T

€32.95

Part no. 079121083H

Audi A7 4G 4.0 TFSI Coolant Hose Engine Water Pipe Front Left N/S 079121083H

€37.95

Part no. A1765012082-1

Water Hose Mercedes C117 W176 AMG Pipe Engine Cooling Coolant Line A1765012082

€51.95

Part no. GK2Q-8K556-AB

Ford Transit Mk8 Ranger S-Max Water Coolant Pipe Hose 2.0 Diesel GK2Q-8K556-AB

€23.95

Part no. 5Q0122051EN-1

VW Golf Sportsvan Seat Leon Mk3 5F Water Coolant Pipe Hose 1.5 TSI 5Q0122051EN

€37.95

Part no. 4G0819377K

Audi A6 A7 C7 3.0 TDI Coolant Water Hose Pipe Line Tube 4G0819377K

€23.95

Part no. 1K0122051AE

Audi A4 B7 Water Hose Cooling Coolant Radiator Pipe Line 1K0122051AE

€23.95

Part no. GK21-8C350-BG-1

Ford Transit Custom 2.0 EcoBlue Coolant Hose Water Pipe Line GK21-8C350-BG

€56.95

Part no. 8573220

Water Hose BMW G30 G31 G11 B57 Diesel Radiator Coolant Pipe Line 8573220

€33.95

Part no. A1645060035

Mercedes X164 Engine Water Hose Tube Line Pipe M272 M273 5.5 Petrol A164506003

€23.95

Part no. 4G0819374R

Audi A6 Allroad A7 4G8 Sportback Heater Coolant Hose Pipe Line Tube 4G0819374R

€23.95

Part no. 5Q0122101H

Audi A3 8V Water Coolant Hose Line Pipe Tube 1.4 TFSI Petrol CMBA 5Q0122101H

€28.95

Part no. 8474929

Water Hose BMW G20 G21 G30 G31 Water Coolant Pump Pipe Connector 8474929

€23.95

Part no. A2742002051

Coolant Pipe Mercedes W213 X253 M274 Engine Cooling Feed Water Hose A2742002051

€23.95

Part no. 7585741

BMW Z4 Series E89 Line Heater Return Thermostat Pipe Hose 7585741

€28.95

Part no. 8656443

BMW i3 I01 Rex Hybrid Water Hose Cooling Coolant Pipe Line Radiator 8656443

€23.95

Part no. LR125486

Range Rover Sport L494 Defender L663 Coolant Water Hose Pipe K6D3-8A512-BA

€66.95

Part no. 8571621

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

€23.95

Part no. CC11-8286-BC

Ford Transit Mk7 Radiator Coolant Hose Tube Pipe Line CC11-8286-BC

€28.95

Part no. A2048306396

Mercedes W204 W207 Diesel Water Line Coolant Hose Ruber Pipe A2048306396

€27.95

Part no. 059121454C

Audi A4 B8 A6 C7 A8 D4 A7 4K Radiator Coolant Hose Pipe Line 3.0 TDI 059121454C

€66.95

Part no. 4K0819374AC

Audi A6 C8 Engine Water Coolant Pipe Hose Cooling Line Tube 50 TFSIe 4K0819374AC

€32.95

Part no. 06K121065Q

Audi TT FV Water Coolant Pipe Hose Line 06K121065Q

€23.95

Part no. AV41-8286-AC

Ford Kuga MK1 Water Coolant Radiator Pipe Hose Line 2.0 TDCI AV41-8286-AC

€23.95

Part no. 8R0121049P

Audi Q5 8R Water Coolant Pipe Hose Line Connector 2.0 TDI 8R0121049P

€23.95

Part no. A2478303800

Mercedes W177 W247 Coolant Pipe Heat Exchange Return Hose A2478303800

€28.95

Part no. GK21-8C351-BD

Ford Transit Mk8 Coolant Water Pipe Hose 2.0 TDCi GK21-8C351-BD

€47.95

Part no. 6C0122447K

Audi A1 8X Polo 6C Water Coolant Hose Pipe 1.4 TSI TFSI 6C0122447K

€28.95

Part no. A2535014200

Coolant Pipe Connector Mercedes W213 H243 Hybrid Cooling Hose Link A2535014200

€28.95

Part no. 6R0122101P

Volkswagen 6R Coolant Water Hose Pipe Line Radiator Cooler 6R0122101P

€23.95

...

Showing 1585-1683 of 4242 products