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 A3 8P Volkswagen Golf Mk 7 Heater Water Cooling Pipe Hose Line 03C121050G

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 5251183

Ford Ranger Mk6 Expansion Tank Coolant Pipe Hose Line 2.2 TDCI AB39-8W005-AD

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 3C0121087A

Volkswagen Passat B7 Radiator Coolant Hose Pipe 2.0 TDI 3C0121087A

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 8E0121101C

Audi A4 B7 1.9 TDI Water Pipe Engine Cooling Radiator Coolant Hose 8E0121101C

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 6R0122101DD-1

Coolant Hose VW Polo 6R Seat Ibiza 6J 1.2 TSI CBZB Radiator Line 6R0122101DD

€28.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 6Y0122073B

Volkswagen Polo 9N Mk4 Coolant Return Hose Pipe 1.2 Petrol 6Y0122073B

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 1929874

Ford Kuga C520 Engine Water Hose Tube Pipe 1.5 Petrol Ecoboost F1F1-6B851-DE

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 8K0145673AM

Audi A5 8T 2.0 CNCD Petrol Intercooler Pipe Hose Line Tube 8K0145673AM

€47.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 3413819

BMW X3 SERIES E83 Water Engine Radiator Return Hose Pipe 3413819

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 7532063

BMW 1 SERIES E81 E87 Petrol Heater return engine cooling water hose pipe 7532063

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 06H121057G

Audi A4 B8 A5 8T Water Hose Cooling Coolant Radiator Pipe Line 06H121057G

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 1K0122101DK-1

Audi TT 8J Upper Radiator Coolant Hose Pipe 2.0 TFSI BWA 1K0122101DK

€32.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. A2055011500

Mercedes W205 Water Hose Radiator Coolant Cooling Pipe Line A2055011500

€75.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 7541146

BMW E65 E66 740i 750i Radiator Coolant Ventilation Vent Pipe Hose 7541146

€28.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 7507149

BMW G30 G31 G32 G11 G12 Radiator Coolant Pipe Hose Line 2.0 Hybrid 7507149

€42.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 8W2819350L

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

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 99610622554

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

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. A2055013482

Mercedes C205 OM651 Diesel Water Coolant Hose Pipe Line Tube A2055013482

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. A2048307296

Mercedes W204 Water Line Coolant Hose Ruber Pipe A2048307296

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 7P0819926B

VW Volkswagen Touareg 7P 3.0 TDI Coolant Water Pipe Hose Line 7P0819926B

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 04L122157CC

Audi A4 B9 2.0 TDI Diesel Engine Coolant Hose Line Pipe Tube 04L122157CC

€28.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. A2702031782

Water Pipe Mercedes C117 W176 W246 M270 Coolant Hose Line A2702031782

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. A2722000054

Mercedes C218 C218 W221 Water Coolant Control Valve M273 A2722000054

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 07K121057A

Coolant Hose Audi RS3 8V TTRS 8S 2.5 TFSI Cooling Pipe Line 07K121057A

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. A1635010182

Mercedes W163 Engine Radiator Hose Tube Line Pipe ML 350 112970 A1635010182

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 5Q0121619A

Audi A3 8V TT FV VW Golf Mk7 Water Coolant Connector Flange Diesel 5Q0121619A

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 6R0122447K-1

Audi A1 8X Coolant Water Pipe Hose Line Engine Cooling 6R0122447K

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 99710662103

Porsche Cayman 987C Engine Coolant Hose Tube Line Pipe Feed Left N/S 99710662103

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 55213798

Fiat Doblo 1.6 Diesel JTD Multijet Engine Water Coolant Pipe Hose Line 55213798

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 8478420

BMW F74 Gran Coupé Electric Coolant Pump Line Hose Tube B38A15P 8478420

€80.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. A6542030001

Mercedes W205 W213 OM654 Oil Cooler Pipe Hose Line A6542030001

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 07L121481H

Audi A6 C6 S8 D3 Engine Water Coolant Pipe Line Tube Hose 07L121481H

€66.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. M8D2-8C480-BB

Land Rover Discovery Sport L550 Coolant Hose Pipe 2.2 Diesel M8D2-8C480-BB

€42.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 6905942

BMW 3 Series E46 Heater Water Valve Pump Hose Pipe Line Diesel 6905942

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 5Q0122051BA

Volkswagen Golf Gtd 5G Audi A3 8V Water Coolant Pipe Hose Tube Line 5Q0122051BA

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 06F145383N

Audi TTS 8J Turbocharger Coolant Pipe Hose Line 2.0 TFSI 06F145383N

€28.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 6922394

Mini Cooper R50 Hose Heater Radiator 6922394

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 04L121131J

Audi A3 8V Skoda Octavia Mk3 Water Coolant Flange Pipe Hose Line 04L121131J

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 8K0121036E-1

Audi A4 B8 A5 8T A5 S5 Radiator Coolant Hose Tube Line Pipe 8K0121036E

€37.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 7P0121065AC

Volkswagen Touareg 7P Preheater Pipe Hose Line 3.0 TDI 7P0121065AC

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 8515509

BMW X5 F15 Radiator Top Coolant Pump Hose Cooling System 8515509

€28.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. M8D2-8260-AB

Range Rover Evoque L551 Radiator Coolant Pipe Hose 2.0 Diesel M8D2-8260-AB

€42.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 9249616

Coolant Hose BMW X3 F25 X4 F26 Diesel Heater Water Return Pipe Line 9249616

€28.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 3Q0121156D

Volkswagen Caddy SB Engine Cooling System Hose Pipe 2.0 TDI 3Q0121156D

€89.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. A1668303800

Coolant Hose Mercedes GLE W166 C292 OM642 Water Cooling Line A1668303800

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 5Q0122073H

Seat Leon 5F Water Coolant Pipe Hose Cooling Line 2.0 TDI Diesel 5Q0122073H

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 6Y0121086F

Volkswagen Polo 9N Engine Coolant Hose Pipe Tube Line 1.2 Petrol BMM 6Y0121086F

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 1626837030

Toyota Auris E15 Water Coolant Pipe Hose Line 1.6 1ZR-FE 1626837030

€28.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 147138491R

Nissan Qashqai Renault 1.5 dCi Egr Cooler Coolant Water Flange 147138491R

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 1335277

Land Rover Discovery 3 L319 Water Coolant Pipe Hose Line 2.7 V6 4H2Q-6720-CD

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. A2055011691

Mercedes W205 Hybrid Water Hose Radiator Coolant Cooling Pipe Line A2055011691

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. A6542030002

Mercedes W177 Water Coolant Pipe Hose Line A6542030002

€66.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 1K0122447GF

Volkswagen Passat B7 Coolant Pipe Hose Line 2.0 TDI 1K0122447GF

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 1J0121156AT

Volkswagen Golf Mk4 Audi A3 TT Heater Matrix Coolant Pipe Hose Line 1J0121156AT

€28.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 14055JD72A

Nissan Qashqai Water Hose Coolant Pipe Lines Cooling Diesel 14055JD72A

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 6R0122157L

Audi A1 8X Volkswagen Polo 6R Engine Coolant Hose Tube Line Pipe 6R0122157L

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. A2058301902-1

Mercedes W205 Diesel OM651 Coolant Hose Circulation Pump Heating A2058301902

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 6909240

BMW Z4 Series E85 Roadster Water Coolant Hose Pipe Petrol 6909240

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 1K0122101GG

Audi A3 8P Water Coolant Pipe Hose Line 1.8 FSI BZB Petrol Engine 1K0122101GQ

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 8E0265381

Audi A3 8V 35 TDI Water Coolant Pipe Hose Line 8E0265381

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 05C122447J

Seat Ibiza Mk5 KJ1 VW Golf Mk8 Water Coolant Pipe Hose 1.0 TSI Petrol 05C122447J

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 8841819

BMW U06 X2 U10 X1 U11 Water Coolant Return Pipe Hose Line B38X 8841819

€118.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 7P6122051D

Volkswagen VW Touareg 7P Coolant Hose Pipes Line 3.0 TDI Diesel 7P6122051D

€56.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 9398958

BMW G20 G21 Radiator Feed Coolant Hose Pipe Tube Line 9398958

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 4K0122055AK

Audi A6 C8 Water Coolant Pipe Hose Line 3.0 TDI 4K0122055AK

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 7L0815857C

VW Volkswagen Touareg 7L Water Heater Coolant Pipe Hose Line 7L0815857C

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 059121511CT-1

Audi Q7 4M Q8 Mk2 Water Coolant Hose Line Tube Pipe 3.0 Diesel 059121511CT

€42.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 5Q0122073R

Audi A3 8V Water Hose Coolant Pipe Line Tube 5Q0122073R

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 7P0121065M-1

Volkswagen Touareg 7P Oil Cooler Cooling Tube Pipe Hose Line 3.0 TDI 7P0121065M

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. A4155010184

Mercedes W415 Coolant Cooling Water Pipe Hose Line Diesel Engine A4155010184

€28.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 8K0122293AE

Porsche Macan 95 Audi A4 S4 8K A5 S5 8F Thermostat Quick Coupling 8K0122293AE

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. A2045014082

Mercedes W204 Water Hose Radiator Coolant Pipe Line M276 Petrol A2045014082

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. A2048304496

Mercedes C204 S04 W204 Recirculation Pump Hose Tube Line Pipe A2048304496

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 4H0121055AB

Audi A8 D4 3.0 Diesel Coolant Return Line Tube Pipe Hose Right O/S 4H0121055AB

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. CPLA-8D011-CB

Land Rover L494 Coolant Cooling Hose Pipe Line CPLA-8D011-CB

€28.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 04L121064C

Audi A3 8V Q3 8U Engine Water Coolant Pipe Cooling Hose Line 2.0 TDI 04L121064C

€28.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. A2223270044-1

Mercedes C216 W212 S212 Water Hose Coolant Cooling Pipe Line A2223270044

€32.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. PCH001150

Range Rover L322 Radiator Cooling Hose Pipe Line PCH001150

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 1K0121058D

VW Volkswagen EOS 1F Golf Gti 1K Coolant Hose Tube Line Pipe 2.0 TDI 1K0121058D

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. A6542031602

Mercedes A177 Diesel OM654.920. Engine Water Line Coolant Pipe Hose A6542031602

€42.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. M8A2-8B505-CB

Range Rover Velar L560 Water Coolant Hose Pipe Line 2.0 Diesel M8A2-8B505-CB

€28.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 7565780

BMW 5 6 Series E60 E61 E63 LCI Petrol N52N N53 Return Hose Cooling Pipe 7565780

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 8841818

BMW U06 X1 U11 Water Coolant Feed Pipe Hose Line B38X 8841818

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 5Q0122101DA

Seat Lean Cupra 5F Ibiza 6P Coolant Flange Pipe Line Tube Coupling 5Q0122291DA

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 6R0121109AA

Audi A1 8X Volkswagen Polo 6R Water Coolant Pipe Hose Tube Line 6R0121109AA

€28.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 1781999

Ford B-Max Water Coolant Hose Pipe Line C1B1-18K580-CA

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. A2055014684

Mercedes C205 OM651 Diesel Engine Water Coolant Pipe Hose Line Tube A2055014684

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 6977017

BMW Z4 Series E85 E86 Air Conditioning Hose Pipe Dryer Expansion Valve 6977017

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 5Q0122051CM

Volkswagen Golf 5G 2.0 TDI Water Hose Radiator Coolant Pipe Line 5Q0122051CM

€61.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 99610621206

Porsche Boxster 986 Cooling Engine Water Coolant Hose Pipe 99610621206

€37.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 7C0121096

Volkswagen Crafter SY Engine Water Coolant Hose Pipe Line Hose Tube 7C0121096

€32.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 8W0145924P

Audi A4 B9 Water Hose Cooling Radiator Coolant Pipe Line 8W0145924P

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 982121101C

Porsche 718 Boxster 982 Coolant Water Feed Pipe Hose Line 2.0T 982121101C

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 5Q0121051L

Audi A3 S3 8V Water Pipes Hoses Coolant Cooling Lines Set 5Q0121051L 5Q0121101P

€51.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 8W0145919K

Audi A5 F5 Water Coolant Hose Line Pipe Tube 8W0145919K

€28.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 1337652

Ford Fiesta Mk5 Lower Radiator Pipe Hose Line 2.0 Duratec 5S6Y-8B273-AB

€32.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. G4D3-8555-BC-1

Range Rover Evoque L538 Water Coolant Pipe Hose 2.0 G4D3-8555-BC

€28.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 8V0121124-1

Audi RS3 8V Engine Oil Coolant Hose Pipe 2.5 TFSI 8V0121124

€56.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 3C0122101FL

Volkswagen Seat Skoda Audi Water Coolant Pipe Line Hose 2.0 TDI 3C0122101FL

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

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