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

€42.95

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

€23.95

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

€23.95

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

€28.95

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Mini Cooper R50 Hose Heater Radiator 6922394

€23.95

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

€23.95

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

€37.95

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

€23.95

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BMW X5 F15 Radiator Top Coolant Pump Hose Cooling System 8515509

€28.95

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

€42.95

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

€28.95

Part no. 3Q0121156D

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

€89.95

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Coolant Hose Mercedes GLE W166 C292 OM642 Water Cooling Line A1668303800

€23.95

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

€23.95

Part no. 6Y0121086F

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

€23.95

Part no. 1626837030

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

€28.95

Part no. 147138491R

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

€23.95

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

€23.95

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Mercedes W205 Hybrid Water Hose Radiator Coolant Cooling Pipe Line A2055011691

€23.95

Part no. A6542030002

Mercedes W177 Water Coolant Pipe Hose Line A6542030002

€66.95

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Volkswagen Passat B7 Coolant Pipe Hose Line 2.0 TDI 1K0122447GF

€23.95

Part no. 1J0121156AT

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

€28.95

Part no. 14055JD72A

Nissan Qashqai Water Hose Coolant Pipe Lines Cooling Diesel 14055JD72A

€23.95

Part no. 6R0122157L

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

€23.95

Part no. A2058301902-1

Mercedes W205 Diesel OM651 Coolant Hose Circulation Pump Heating A2058301902

€23.95

Part no. 6909240

BMW Z4 Series E85 Roadster Water Coolant Hose Pipe Petrol 6909240

€23.95

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

€23.95

Part no. 8E0265381

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

€23.95

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

€23.95

Part no. 8841819

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

€118.95

Part no. 7P6122051D

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

€56.95

Part no. 9398958

BMW G20 G21 Radiator Feed Coolant Hose Pipe Tube Line 9398958

€23.95

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

€23.95

Part no. 7L0815857C

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

€23.95

Part no. 059121511CT-1

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

€42.95

Part no. 5Q0122073R

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

€23.95

Part no. 7P0121065M-1

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

€23.95

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Mercedes W415 Coolant Cooling Water Pipe Hose Line Diesel Engine A4155010184

€28.95

Part no. 8K0122293AE

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

€23.95

Part no. A2045014082

Mercedes W204 Water Hose Radiator Coolant Pipe Line M276 Petrol A2045014082

€23.95

Part no. A2048304496

Mercedes C204 S04 W204 Recirculation Pump Hose Tube Line Pipe A2048304496

€23.95

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

€23.95

Part no. CPLA-8D011-CB

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

€28.95

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

€28.95

Part no. A2223270044-1

Mercedes C216 W212 S212 Water Hose Coolant Cooling Pipe Line A2223270044

€32.95

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Range Rover L322 Radiator Cooling Hose Pipe Line PCH001150

€23.95

Part no. 1K0121058D

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

€23.95

Part no. A6542031602

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

€42.95

Part no. M8A2-8B505-CB

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

€28.95

Part no. 7565780

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

€23.95

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

€23.95

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

€23.95

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

€28.95

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

€23.95

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

€23.95

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Volkswagen Golf GtI 1K Audi A3 8P Engine Coolant Hose Tube Line Pipe 06F121492B

€184.95

Part no. 6977017

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

€23.95

Part no. 5Q0122051CM

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

€61.95

Part no. 99610621206

Porsche Boxster 986 Cooling Engine Water Coolant Hose Pipe 99610621206

€37.95

Part no. 7C0121096

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

€32.95

Part no. 8W0145924P

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

€23.95

Part no. 982121101C

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

€23.95

Part no. 8W0145919K

Audi A5 F5 Water Coolant Hose Line Pipe Tube 8W0145919K

€28.95

Part no. 1337652

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

€32.95

Part no. G4D3-8555-BC-1

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

€28.95

Part no. 8V0121124-1

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

€56.95

Part no. 3C0122101FL

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

€23.95

Part no. GJ32-86160-AA

Land Rover Discovery Sport L550 Coolant Hose Pipe 2.0 Diesel GJ32-86160-AA

€23.95

Part no. A2465010358

Mercedes W176 W246 Coolant Hose Water Pump To Oil Cooler A2465010358

€23.95

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Vent Pipe BMW F10 M5 F12 F13 M6 Cooling Line Water Hose Engine Cooler 7843262

€37.95

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Audi A5 8T Water Hose Cooling Coolant Radiator Pipe Line 06H121057E

€23.95

Part no. AV41-8K012-BB

Ford Kuga C394 Overflow Container Header Tank Hose Tube Pipe Line AV41-8K012-BB

€28.95

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BMW F20 F21 F30 F31 F32 F33 F34 Pipe Coolant Hose Radiator 7811129

€23.95

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Volkswagen Golf CD1 Engine Water Coolant Pipe Hose 5WA121109F

€23.95

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VW Volkswagen Fox 5Z 1.2 CHFB Engine Coolant Radiator Pipe Vent 03D103211C

€23.95

Part no. 8571618

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

€32.95

Part no. 8E0121070B-1

Audi A4 S4 B7 Upper Coolant Radiator Hose Line Pipe 8E0121070B

€23.95

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Coolant Pipe Audi A6 C7 Q7 4L 3.0 TDI Water Hose Line Tube 059121465B

€32.95

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Mercedes W246 Petrol Engine Water Coolant Pipe A2468303496

€23.95

Part no. A6398322223

Water Hose Mercedes Vito Viano W639 Cooling Coolant Pipe Line A6398322223

€23.95

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Mercedes EQA350 H243 Coolant hose Expansion Tank Radiator Line A2435002100

€37.95

Part no. 9P1121623

Porsche 718 Boxster 982 Coolant Cooling Return Hose Pipe Left N/S 9P1121623

€28.95

Part no. A2515002075

Mercedes W251 Coolant Water Hose Pipe Line Radiator Cooler A2515002075

€51.95

Part no. 059121075DJ

Audi Q7 4L Quattro Diesel 3.0 V6 TDI Engine Cooling Coolant Pipe 059121075DJ

€23.95

Part no. 8W0122101AL

Audi A5 8T Coolant Water Hose Line Tube Pipe 2.0 TDI Diesel 8W0122101AL

€23.95

Part no. FPLA-8584-CB

Range Rover Evoque L538 Water Coolant Cooling Hose Pipe Line 3.0 FPLA-8584-CB

€23.95

Part no. 9845173

BMW F20 F30 LCI Coolant Hose Expansion Tank Cylinder Head B48 Petrol 9845173

€23.95

Part no. 8514453-1

BMW F20 LCI B37 Expansion Tank Cylinder Head Cooling Hose Pipe 8514453

€23.95

Part no. A6421401175

Mercedes W212 W222 OM642 Diesel EGR Exhaust Cooler Heat Exchanger A6421401175

€23.95

Part no. 7C0121130C

VW Volkswagen Crafter Sy 2.0 TDi Engine Coolant Pipe Hose Tube Line 7C0121130C

€42.95

Part no. A2055013782

Mercedes W205 Hybrid Water Coolant Pipe Hose Line A2055013782

€23.95

Part no. 4H0122101D

Audi A8 D4 Water Pipe Engine Cooling Coolant Hose Line 3.0 TDI Diesel 4H0122101D

€32.95

Part no. 8509274

BMW F01 F02 F07 F10 Coolant Water Pipe Hose Line Tube 8509274

€23.95

Part no. A2118303596

Mercedes W211 Air Conditioning Heater Pipe Hose Line A2118303596

€23.95

Part no. 04L121071G

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

€23.95

Part no. 1316063

Land Rover Discovery 3 L319 Water Coolant Flange Pipe 2.7 Diesel 4H2Q-8A544-AB

€23.95

Part no. 1K0121086AH

Audi A3 8P VW Golf 5 Seat Leon 1P1 Coolant Hose Pipe Diesel 2.0 TDI 1K0121086AH

€28.95

Part no. 7609532

BMW 3 Series Petrol F30 F31 N20 Radiator Cooling Coolant Hose Pipe Line 7609532

€37.95

Part no. 7596837-1

BMW F20 F21 F22 F23 F30 F31 F32 F33 Petrol Radiator Coolant Hose Pipe 7596837

€23.95

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