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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Mercedes W204 Engine Water Cooling Drain Pipe Bleed Line Tube Diesel A6422000058

€28.95

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Audi S6 C7 S7 4G Secondary Air Pump Connecting Pipe Line Hose 079131605BB

€28.95

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Land Rover Discovery Sport L550 Coolant Bottle Tank Bracket Mount L8D2-19G00-AA

€23.95

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Ford Focus Mk3 Transit Connect Overflow Bottle Hose Coolant Pipe BV61-8C012-AA

€23.95

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Smart W452 Roadster Radiator Coolant Cooling Water Pipe Line Petrol Q0009504V003

€23.95

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Coolant Hose Mercedes W177 W247 Cooler Radiator To Thermostat Line A2475010582

€28.95

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Ford Transit Mk8 Radiator Coolant Hose Tube Pipe 2.2 TDCI BK31-8260-DB

€23.95

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BMW 1 3 Series F20 F21 F30 F31 LCI Coolant Water Hose Pipe Line Feed 9363338

€32.95

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BMW F10 X5 F15 X6 F16 Coolant Hose Cooling Water Line Diesel N57N 7827842

€23.95

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Mercedes W169 W245 CDI Radiator Water Cooling Pipe Hose Line A6402001352

€23.95

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Audi TT 8J MK2 Water Hose Cooling Coolant Radiator Pipe Line 1K0122051FE

€23.95

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Land Rover Discovery Sport L550 Coolant Heater Valve 1.5 PHEV P8D2-18495-AA

€47.95

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Audi Q7 4L 4.2 TDI Water Coolant Pipe Hose Line 057121057

€23.95

Part no. 165710D180

Toyota Corolla E12 Engine Coolant Radiator Inlet Hose Tube Pipe 3ZZFE 165710D180

€23.95

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Range Rover Sport L494 Engine Coolant Water Hose Tube Line Pipe FPLA-6A886-CC

€23.95

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Mercedes W164 X164 Radiator Engine Coolant Hose Tube Line Pipe A1645000075

€23.95

Part no. 06A121065CQ

Audi A3 8P VW Golf Mk5 Coolant Hose Water Pipe Cooling 1.6 Petrol 06A121065CQ

€56.95

Part no. 7592649

Coolant Hose BMW F10 F11 F12 F13 F07 GT Petrol N63 Water Pipe 7592649

€28.95

Part no. 8K0819332M

Audi A4 B8 Water Coolant Pipe Hose Line Tube 2.0 TDI CNHC 8K0819332M

€37.95

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Audi Q3 8U VW Beetle Scirocco Mk3 Coolant Pipe Water Cooling Hose 06K121075AR

€23.95

Part no. CPLA-5G488-AB

Land Range Rover Vogue L405 Cooler Pipe Line Hose CPLA-5G488-AB

€137.95

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Skoda Octavia RS 1Z Fuel Tank Carbon Canister Control Valve Pipe 06J133781CA

€23.95

Part no. A2135010982

Mercedes X253 Coolant Hose Pipe Cooling Line A2135010982

€32.95

Part no. JX6G-9V472-BB

Ford Fiesta Mk8 ST Turbo Water Pipe Hose Line 1.5 EcoBoost JX6G-9V472-BB

€28.95

Part no. 5Q0122101DQ

VW Golf Mk7 Audi A3 8V Seat Leon Radiator Water Coolant Pipe Hose 5Q0122101DQ

€23.95

Part no. A2315011182

Mercedes R231 Engine Cooling Coolant Line Pipe Hose A2315011182

€28.95

Part no. A4478320015

Mercedes Vito W447 Diesel Coolant Hose Heater Water Line Hose A4478320015

€23.95

Part no. 8P0122051

Audi RSQ3 8U Cooling System Water Coolant Hose Pipe Line 2.5 TFSI 8P0122051

€70.95

Part no. 5QH815097C

Volkswagen Tiguan Ad1 Coolant Pipe Feed Return Hose Tube Line 5QH815097C

€85.95

Part no. 1K0122101BG

Volkswagen VW Golf Mk5 Water Hose Cooling Coolant Radiator Pipe Line 1K0122101BG

€32.95

Part no. CV61-8260-TB

Ford Focus Mk3 ST Coolant Hose Pipe 2.0 Petrol EcoBoost CV61-8260-TB

€23.95

Part no. 165720D110

Toyota Corolla E12 Radiator Coolant Outlet Hose Tube Line Pipe 3ZZFE 165720D110

€23.95

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Ford Ranger T6 Engine Coolant Hose Pipe Line 2.0 Bi-Turbo Diesel JB3G-8B273-AE

€32.95

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Water Hose BMW X3 G01 X4 G02 Diesel Coolant Radiator Return Pipe Line 6993464

€37.95

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Coolant Hose Mercedes Vito W447 Diesel M651 Heater Water Return Line A4478323723

€23.95

Part no. 6928592

BMW E87 E90 E91 Diesel M47N2 Radiator Water Pump Hose Pipe 6928592

€23.95

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Expansion Tank Line Coolant Hose BMW F40 B47B Mini F56 B47D Water Pipe 8580486

€56.95

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BMW U06 U11 Cylinder Head Coolant Pump Breather Line Hose Tube Pipe 9896555

€108.95

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Ford Transit Custom Coolant Hose Pipe 2.0 EcoBlue Diesel KK21-8C351-BC

€28.95

Part no. BV61-8260-HA

Ford Focus Mk3 Water Coolant Pipe Hose Line 1.6 TDCi Diesel BV61-8260-HA

€28.95

Part no. BK21-18K580-BC

Ford Transit Mk8 Water Hose Cooling Coolant Pipe Line BK21-18K580-BC

€23.95

Part no. 7P6121070AP

Porsche Cayenne 92A CRCA Coolant Water Pipe Hose Line Tube 7P6121070AP

€23.95

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Audi Q3 8U VW Beetle 5C Water Coolant Hose Pipe Line 06K121059K

€28.95

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Audi A4 RS4 B8 Headlight Lamp Drain Hose Pipe Line Tube Left N/S 8T0941717D

€23.95

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BMW X3 F25 Radiator Coolant Hose Pipe Line 7823556

€51.95

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Audi S3 8V Water Coolant Engine Cooling Flange Pipe Hose Line Petrol 06K121132

€23.95

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Water Pipe Mercedes W639 Engine Cooling Coolant Hose Line A6395017382

€23.95

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

€23.95

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Audi S4 B8 Engine Coolant Pipe Water Hose Line 3.0 TFSI CAKA 06E121044D

€23.95

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BMW 1 3 4 F20 LCI F30 F32 Petrol B48 Water Radiator Cooler Pipe Hose 8677245

€66.95

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Volkswagen Audi Seat Skoda Coolant Water Pipe Hose Line 1.6 2.0 TDI 03L121065F

€42.95

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Jaguar XF X250 Engine Water Coolant Hose Pipe Tube Line 2.2 Diesel CX23-8286-ED

€23.95

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Audi A4 B7 2.0 TFSI BGB Turbo Water Coolant Hose Line Tube Pipe 06D121085

€23.95

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Audi A4 B8 2.0 TDI CNHC Engine Water Coolant Hose Pipe Line 8K0145919C

€56.95

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Water Pipe Mercedes W205 C253 OM651 Engine Cooling Coolant Hose A6512001051

€23.95

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Porsche Cayenne 92A Water Coolant Pipe Hose Line 3.0 TFSI 7P0121156C

€23.95

Part no. A2053400400

Mercedes W205 Water Hose Cooling Coolant Pipe A2053400400

€32.95

Part no. 1740697

Ford Fiesta MK7 1.6 TDCI Radiator Overflow Bottle Hose Coolant Pipe Line 1740697

€23.95

Part no. 059122445F

Audi Q7 Q8 4M 3.0 TDI Engine Coolant Hose Line Tube Pipe 059122445F

€23.95

Part no. 8K0121051F

Audi A4 B8 A5 8T Radiator Water Coolant Pipe Hose Line Petrol 8K0121051F

€23.95

Part no. 2632973

Ford Ranger Mk6 Coolant Hose Pipe 2.0 TDCi Diesel JB3G-9U468-AC

€28.95

Part no. 6W93-6F07-AB

Jaguar XF X250 Intercooler Outlet Pipe Hose Line Tube 3.0 Diesel 6W93-6F073-AB

€23.95

Part no. 5N0122101AC-1

VW Volkswagen Tiguan 5N Seat Alhambra Water Coolant Pipe Hose Line 5N0122101AC

€23.95

Part no. 059121064D-1

Audi A5 8T Water Hose Cooling Coolant Radiator Pipe Line 3.0 TDI 059121070J

€23.95

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Mini Cooper One R50 W10 Coolant Water Hose Pipe Expention Tank 1475561

€23.95

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Coolant Hose BMW X3 G01 X4 G02 Cooling Line Power Control Unit PCU 8597288

€42.95

Part no. 6R0122073H

Audi A1 S1 8X VW Polo 6R Seat Ibiza 6P Engine Water Coolant Hose 6R0122073H

€51.95

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Audi A1 8X Coolant Cooling Engine Pipe Hose Line Radiator 6R0122101AQ

€23.95

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Ford Transit Mk7 Water Hose Engine Cooling Radiator Coolant Pipe 1750620

€23.95

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Jaguar XF X250 Radiator Water Coolant Top Hose Pipe Line Tube 9X23-8N241-BB

€23.95

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Skoda Octavia Mk3 Water Coolant Cooling Pipe Hose Line Petrol Engine 04E121064E

€23.95

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Audi A4 S4 B9 VW Touareg Water Coolant Pipe Hose Line 06M121085H

€23.95

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Audi A4 B8 Water Hose Radiator Coolant Pipe Line 1.8 2.0 Petrol 8K0121030K

€23.95

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Audi A4 B8 2.0 TDI CNHC Water Coolant Hose Line Pipe 8K0819334BB

€23.95

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Audi A8 D4 3.0 TDI Diesel Engine Water Coolant Pipe Hose Line 4H0121485AA

€23.95

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BMW 5 X5 Series E53 X5 M54 3.0i Suv Water Pipe Cooling Hose 7500735

€23.95

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Porsche Cayenne 92A Water Coolant Pipe Hose Line 3.0 TFSI 95810610400

€23.95

Part no. 5Q0121049CH

VW Volkswagen Golf Mk7 5G Water Coolant Pipe Hose Line 1.5 Petrol 5Q0121049CH

€23.95

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

€23.95

Part no. 7P6122157C

Porsche Cayenne 92A VW Touareg 7P Engine Coolant Pipe Hose Line 7P6122157C

€37.95

Part no. BK3Q8K512BD

Ford Transit MK8 2.2 TDCI Water Hose Radiator Coolant Pipe Line BK3Q8K512BD

€23.95

Part no. 8K0121055L-2

Audi A4 B8 Water Hose Cooling Coolant Radiator Pipe Line Diesel 8K0121055L

€28.95

Part no. 5Q0121049AD-1

Skoda Octavia Mk3 Water Coolant Pipe Hose Line Petrol Engine 5Q0121049AD

€23.95

Part no. 7605640

BMW F12 F13 F06 Coolant Hose Radiator Line Water Pipe 7605640

€42.95

Part no. A1635012382

Mercedes W163 Coolant Engine Expansion Tank Hose Tube Line Pipe A1635012382

€32.95

Part no. 7639997

BMW F20 F30 F32 N20 Engine Coolant Radiator Water Feed Hose Pipe Petrol 7639997

€23.95

Part no. 1K0122101KN

VW Volkswagen Caddy Maxi Engine Radiator Coolant Hose Pipe Line 1K0122101KN

€23.95

Part no. 1K0121096C

Volkswagen Golf MK5 Engine Water Coolant Pipe Hose 1K0121096C

€23.95

Part no. 1K0122063K-1

Seat Leon Volkswagen Golf 6 Audi A1 8X Water Coolant Pipe Hose Line 1K0122063K

€23.95

Part no. 04L121064AE

Volkswagen Seat Skoda Audi 2.0 TDI Water Coolant Pipe Hose Line 04L121064AE

€23.95

Part no. 95810607000

Porsche Cayenne 92A Water Hose Coolant Pipe Thermostat 3.0 TFSI 95810607000

€28.95

Part no. 1707620

Ford S-Max Heater Water Pipe Hose Line Tube AG91-8B160-BB

€28.95

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Volkswagen Transporter T5 T6 Coolant Thermostat Housing Box Cover 03L121111AF

€23.95

Part no. 04L121065CP

Volkswagen Caddy Maxi 2k Engine Cooling System Water Pipe Hose Line 04L121065CP

€56.95

Part no. 06E121083A

Audi A4 S4 B8 S5 8T 8F 3.0 TFSI Water Hose Coolant Pipe Line Tube 06E121083A

€32.95

Part no. 7581872

BMW F01 F02 F10 F11 Coolant Line Heat Exchanger Hose Engine N52 N53 7581872

€28.95

Part no. 1K0145832AH

Audi A3 8P 2.0 TDI Convertible Intercooler Air Pipe Hose Left N/S 1K0145832AH

€56.95

Part no. 982121533F

Porsche Cayman Boxster 718 982 Coolant Water Pipe Hose 982121533F

€37.95

Part no. 4G0121485BE

Audi A6 C7 A7 4G8 Water Radiator Coolant Pipe Hose Tube Line Diesel 4G0121485BE

€32.95

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