Cooling system hoses and lines
More informationAt 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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Part no. 03L121065AJ
Volkswagen Goif Caddy 1.6 TDI Diesel Water Coolant Pipe Hose Line 03L121065AJ
Promo price
£13.95
£13.25
Free delivery: Jul 21
If paid before 14:00
-15%
Part no. 1K0121070BR
Volkswagen VW Golf Mk5 Water Hose Radiator Coolant Pipe Line 1K0121070BR
Promo price
£18.95
£16.11
Free delivery: Jul 21
If paid before 14:00
-15%
Part no. 1K0122157AN
VW Golf Mk5 V Mk6 VI Petrol Engine Water Coolant Pipe Hose Line 1K0122157AN
Promo price
£18.95
£16.11
Free delivery: Jul 21
If paid before 14:00
-5%
Part no. 5K0121070C
Volkswagen Golf Mk6 Water Hose Cooling Coolant Radiator Pipe Line 5K0121070C
Promo price
£13.95
£13.25
Free delivery: Jul 21
If paid before 14:00
-15%
Part no. 06F122101A
VW Volkswagen Golf Mk6 VI Coolant Water Pipe Hose Line 06F122101A
Promo price
£18.95
£16.11
Free delivery: Jul 21
If paid before 14:00
-15%
Part no. 1K0122101JR
VW Golf 6 Audi A3 8P 1.6 TDI Water Hose Radiator Coolant Pipe Line 1K0122101JR
Promo price
£18.95
£16.11
Free delivery: Jul 21
If paid before 14:00
-5%
Part no. 1K0122157JH
Coolant Hose Audi A3 8P VW Golf 6 1.6 TDI Diesel Water Pipe Line 1K0122157JH
Promo price
£13.95
£13.25
Free delivery: Jul 21
If paid before 14:00
-15%
Part no. 06F121133G
VW Volkswagen Golf 5 2.0 TSI BWA Petrol Engine Coolant Flange Hose 06F121133G
Promo price
£18.95
£16.11
Free delivery: Jul 21
If paid before 14:00
-5%
Part no. 1K0122063D
VW Volkswagen Mk5 V Mk6 VI 2.0 Petrol Water Coolant Pipe Hose Line 1K0122063D
Promo price
£13.95
£13.25
Free delivery: Jul 21
If paid before 14:00
-5%
Part no. 03L121131AA
Volkswagen Golf Mk6 Caddy 1.6 TDI Engine Water Coolant Pipe Hose 03L121131AA
Promo price
£13.95
£13.25
Free delivery: Jul 21
If paid before 14:00
-5%
Part no. 5Q0122157AK
Volkswagen Golf 5G 2.0 TFSI CHHA Water Hose Radiator Coolant Pipe 5Q0122157AK
Promo price
£13.95
£13.25
Free delivery: Jul 21
If paid before 14:00
-5%
Part no. 5Q0121063Q
Volkswagen Golf CD1 Water Pipe Hose Coolant Cooling Line 5Q0121063Q
Promo price
£13.95
£13.25
Free delivery: Jul 21
If paid before 14:00
Part no. 5Q0121049CR
Volkswagen Golf CD1 Water Pipe Hose Line Cooling Coolant 5Q0121049CR
£42.95
Free delivery: Jul 21
If paid before 14:00
-5%
Part no. 5Q0122101S
VW Golf Mk7 Audi A3 8V Water Hose Radiator Coolant Pipe Line Diesel 5Q0122101S
Promo price
£13.95
£13.25
Free delivery: Jul 21
If paid before 14:00
Part no. 1K0122073FR
VW Volkswagen Golf Mk6 Water Coolant Hose Pipe Line Petrol Engine 1K0122073FR
£13.95
Free delivery: Jul 21
If paid before 14:00
Part no. 5N0121070F
Volkswagen Tiguan 5N Water Coolant Cooling Pipe Line 2.0 TDi Diesel 5N0121070F
£13.95
Free delivery: Jul 21
If paid before 14:00
-15%
Part no. 1K0122073R
VW Volkswagen Golf Mk5 V Water Coolant Hose Pipe Line 1K0122073R
Promo price
£18.95
£16.11
Free delivery: Jul 21
If paid before 14:00
Part no. 7N0815097H
VW Sharan 7N Coolant Water Pipes Hoses Auxiliary Heating Lines 7N0815097H
£56.95
Free delivery: Jul 21
If paid before 14:00
-5%
Part no. 5Q0121447G
Audi A3 8V VW Golf Mk7 Engine Coolant Pipe Water Hose Line 5Q012144
Promo price
£13.95
£13.25
Free delivery: Jul 21
If paid before 14:00
-40%
Part no. 7C0121061B-1
Volkswagen Crafter SY Water Coolant Hose Pipe Line 2.0 TDI 7C0121061B
Promo price
£32.95
£19.77
Free delivery: Jul 21
If paid before 14:00
-5%
Part no. 03E121065A
VW Volkswagen Polo 6R Solid Water Coolant Pipe Hose Line Tube 03E121065A
Promo price
£13.95
£13.25
Free delivery: Jul 21
If paid before 14:00
-5%
Part no. 1K0121096AT
VW Volkswagen Touran 1T 1.4 TSI Radiator Coolant Hose Line Tube Pipe 1K0121096AT
Promo price
£13.95
£13.25
Free delivery: Jul 21
If paid before 14:00
-15%
Part no. 05E121070
VW Volkswagen Golf 8 1.5 eTSI DFYA Water Coolant Pipe Hose Line Tube 05E121070
Promo price
£28.95
£24.61
Free delivery: Jul 21
If paid before 14:00
-5%
Part no. 6R0121157
Volkswagen Polo 6R Water Hose Radiator Coolant Pipe Line 6R0121157
Promo price
£13.95
£13.25
Free delivery: Jul 21
If paid before 14:00
-40%
Part no. 1K0121156BP
Volkswagen VW Golf Mk5 1K Water Hoses Radiator Coolant Pipes Lines 1K0121156BP
Promo price
£37.95
£22.77
Free delivery: Jul 21
If paid before 14:00
-5%
Part no. 6R0122101P
Volkswagen 6R Coolant Water Hose Pipe Line Radiator Cooler 6R0122101P
Promo price
£13.95
£13.25
Free delivery: Jul 21
If paid before 14:00
Part no. 1K0122051GN
Volkswagen Golf Mk6 2.0 Petrol Water Hose Radiator Coolant Pipe Line 1K0122051GN
£13.95
Free delivery: Jul 21
If paid before 14:00
Part no. 5K0122101N
Volkswagen Scirocco III 2.0 TDI Coolant Hose Radiator Water Pipe Line 5K0122101N
£28.95
Free delivery: Jul 21
If paid before 14:00
-5%
Part no. 03L201360G
Volkswagen Tiguan 5N Fuel Injection Line Pressure Pipe Rail Injector 03L201360G
Promo price
£13.95
£13.25
Free delivery: Jul 21
If paid before 14:00
-5%
Part no. 03C121065B
Water Hose Volkswagen Golf 6 Audi A1 A3 8P Petrol Coolant Pipe 03C121065B
Promo price
£13.95
£13.25
Free delivery: Jul 21
If paid before 14:00
-5%
Part no. 6C0122157A
Volkswagen Polo 6R Water Pipes Hoses Coolant Cooling Line 6C0122157A
Promo price
£13.95
£13.25
Free delivery: Jul 21
If paid before 14:00
-40%
Part no. 7N0121049D
Volkswagen Sharan 7N Water Coolant Hose Pipe Line 1.4 Petrol Engine 7N0121049D
Promo price
£37.95
£22.77
Free delivery: Jul 21
If paid before 14:00
-40%
Part no. 7C0121487E-1
VW Volkswagen Crafter SY Water Hose Cooling Coolant Pipe Line 2.0 TDI 7C0121487E
Promo price
£37.95
£22.77
Free delivery: Jul 21
If paid before 14:00
-40%
Part no. 04L121064G
Volkswagen VW Golf Mk7 5G Water Hoses Radiator Coolant Pipes Lines 04L121064G
Promo price
£23.95
£14.37
Free delivery: Jul 21
If paid before 14:00
Part no. 7N0819350B
Volkswagen VW Sharan 7N Water Hose Radiator Coolant Pipe Line 2.0 TDI 7N0819350B
£70.95
Free delivery: Jul 21
If paid before 14:00
-40%
Part no. 5Q0121070AG
VW Scirocco Mk3 Golf 5g Jetta A6 Water Coolant Pipe Hose Line Tube 5Q0121070AG
Promo price
£23.95
£14.37
Free delivery: Jul 21
If paid before 14:00
-15%
Part no. 5WA122073H
Coolant Hose Volkswagen Golf CD1 Polo 1.0 TSI Water Tube Line Pipe 5WA122073H
Promo price
£18.95
£16.11
Free delivery: Jul 21
If paid before 14:00
Part no. 2N0121096BM-1
Volkswagen Crafter TR SC SZ Coolant Hose Water Pipe Line Tube 2N0121096BM
£47.95
Free delivery: Jul 21
If paid before 14:00
Part no. 7N0122051S
Volkswagen Sharan 7N Water Pipe Hose Coolant Cooling Line 2.0 TDI 7N0122051S
£28.95
Free delivery: Jul 21
If paid before 14:00
Part no. 7P6121070AF
VW Volkswagen Touareg 7P Water Coolant Hoses Pipes Lines SET 3.0 TDI 7P6121070AF
£56.95
Free delivery: Jul 21
If paid before 14:00
-40%
Part no. 06J121075B
Audi A3 8P VW Scirocco Mk3 Coolant Hose Water Pipe Line Tube Petrol 06J121075B
Promo price
£28.95
£17.37
Free delivery: Jul 21
If paid before 14:00
-15%
Part no. 03L121111AB
Volkswagen Crafter Water Thermostat Cooling Hoses Pipe 03L121111AB
Promo price
£18.95
£16.11
Free delivery: Jul 21
If paid before 14:00
-40%
Part no. 7C0121071B
Volkswagen VW Crafter SY Water Coolant Hose Pipe Line 2.0 TDI 7C0121071B
Promo price
£94.95
£56.97
Free delivery: Jul 21
If paid before 14:00
-15%
Part no. 1K0122447EQ
VW Volkswagen Golf VI Mk6 2.0 TDi Coolant Water Hose Line Tube Pipe 1K0122447EQ
Promo price
£18.95
£16.11
Free delivery: Jul 21
If paid before 14:00
-5%
Part no. 06F121058D
VW Volkswagen Golf Mk6 VI 2.0 TDi Water Coolant Hose Pipe Line 06F121058D
Promo price
£13.95
£13.25
Free delivery: Jul 21
If paid before 14:00
-40%
Part no. 1K0122109CD
Volkswagen VW Golf Mk6 Water Hose Coolant Pipe Line 1.4 TSI 1K0122109CD
Promo price
£23.95
£14.37
Free delivery: Jul 21
If paid before 14:00
-15%
Part no. 7C0121069
Volkswagen Crafter SY Water Coolant Hose Pipe Line 7C0121069
Promo price
£18.95
£16.11
Free delivery: Jul 21
If paid before 14:00
-15%
Part no. 7C0121487E
VW Volkswagen Crafter SY Water Hose Cooling Coolant Pipe Line 2.0 TDI 7C0121487E
Promo price
£18.95
£16.11
Free delivery: Jul 21
If paid before 14:00
Part no. 1K0121049DL
Volkswagen Touran 1T Water Coolant Pipes Hoses Line 1.4 TSI 1K0121049DL
£47.95
Free delivery: Jul 21
If paid before 14:00
Part no. 5K0122051N
Volkswagen Beetle Scirocco III 2.0 TDI Water Radiator Pipe Hose Line 5K0122051N
£23.95
Free delivery: Jul 21
If paid before 14:00
-5%
Part no. 1C0122101AP
Volkswagen New Beetle Water Pipe Hose Coolant Cooling Line 1C0122101AP
Promo price
£13.95
£13.25
Free delivery: Jul 21
If paid before 14:00
-40%
Part no. 03C121050N
VW Volkswagen Golf Mk6 Heater Water Cooling Coolant Pipe Hose Line 03C121050N
Promo price
£51.95
£31.17
Free delivery: Jul 21
If paid before 14:00
-15%
Part no. 1K0122447T
Volkswagen Audi Seat Skoda Water Hose Radiator Coolant Pipe Line 1K0122447T
Promo price
£18.95
£16.11
Free delivery: Jul 21
If paid before 14:00
-5%
Part no. 1K0122063K-1
Seat Leon Volkswagen Golf 6 Audi A1 8X Water Coolant Pipe Hose Line 1K0122063K
Promo price
£13.95
£13.25
Free delivery: Jul 21
If paid before 14:00
Part no. 7L6121058AB
VW Touareg 7L Auxiliary Water Pump Coolant Pipe Hose Line 3.0 TDI 7L6121058AB
£23.95
Free delivery: Jul 21
If paid before 14:00
-15%
Part no. 05E121497A
Volkswagen Golf CD1 Coolant Pipe Turbocharger Flow Line Hose Pipe 05E121497A
Promo price
£18.95
£16.11
Free delivery: Jul 21
If paid before 14:00
Part no. 7L0815857C
VW Volkswagen Touareg 7L Water Heater Coolant Pipe Hose Line 7L0815857C
£13.95
Free delivery: Jul 21
If paid before 14:00
-5%
Part no. 03L121121A
VW Volkswagen Touran 1T1 Passat 2.0 TDI BKD BMP Coolant Flange Pipe 03L121121A
Promo price
£13.95
£13.25
Free delivery: Jul 21
If paid before 14:00
-15%
Part no. 6R0121101K
VW Volkswagen Polo 6R 5 Water Hose Radiator Coolant Cooling Pipe Line 6R0121101K
Promo price
£18.95
£16.11
Free delivery: Jul 21
If paid before 14:00
-40%
Part no. 7C0121096
Volkswagen Crafter SY Water Coolant Hose Pipe Line 7C0121096
Promo price
£28.95
£17.37
Free delivery: Jul 21
If paid before 14:00
Part no. 6R0122101G
Volkswagen Polo GTI 6R Engine Water Coolant Hoses Pipes 1.4 TSI CAVE 6R0122101G
£56.95
Free delivery: Jul 21
If paid before 14:00
Part no. 06F121492B
Volkswagen Golf GtI 1K Audi A3 8P Engine Coolant Hose Tube Line Pipe 06F121492B
£156.95
Free delivery: Jul 22 – 29
If paid before 14:00
Part no. 5WA121109D
Volkswagen Polo Mk6 AW Water Reservoir Coolant Pipe Hose Line 5WA121109D
£18.95
Free delivery: Jul 21
If paid before 14:00
-5%
Part no. 5N0122101AC
Volkswagen Tiguan 5N Water Pipes Hoses Coolant Cooling Line 5N0122101AC
Promo price
£13.95
£13.25
Free delivery: Jul 21
If paid before 14:00
-15%
Part no. 06F145317H
VW Volkswagen Golf 5 2.0 TFSI BWA Coolant Pipe Hose Bracket Mount 06F145317H
Promo price
£18.95
£16.11
Free delivery: Jul 21
If paid before 14:00
-5%
Part no. 7P0121065M-1
Volkswagen Touareg 7P Oil Cooler Cooling Tube Pipe Hose Line 3.0 TDI 7P0121065M
Promo price
£13.95
£13.25
Free delivery: Jul 21
If paid before 14:00
-5%
Part no. 06A121132R
VW Volkswagen New Beetle 1.6 BFS Water Coolant Flange 06A121133AC
Promo price
£13.95
£13.25
Free delivery: Jul 21
If paid before 14:00
-15%
Part no. 03C121065F
Volkswagen VW Touran 1T Petrol Engine Coolant Pipe Hose Vent 03C121065F
Promo price
£18.95
£16.11
Free delivery: Jul 21
If paid before 14:00
-15%
Part no. 3C0121058AR
VW Golf Mk6 Audi A3 8P Water Coolant Hose Pipe Line 2.0 TDI Diesel 3C0121058AR
Promo price
£18.95
£16.11
Free delivery: Jul 21
If paid before 14:00
-5%
Part no. 7C0121082B
Volkswagen VW Crafter SY Engine Coolant Hose Line Radiator Pipe 7C0121082B
Promo price
£13.95
£13.25
Free delivery: Jul 21
If paid before 14:00
Part no. 2E0122101F
VW Crafter 2E Mercedes Sprinter W906 Coolant Hose Pipe Line 2E0122101F
£23.95
Free delivery: Jul 21
If paid before 14:00
-40%
Part no. 6R0121447E
Volkswagen Polo 6R Water Hose Radiator Coolant Cooling Pipe Line 6R0121447E
Promo price
£23.95
£14.37
Free delivery: Jul 21
If paid before 14:00
-40%
Part no. 7C0121088
Volkswagen Crafter Sy Engine Coolant Hose Line Pipe 7C0121088
Promo price
£37.95
£22.77
Free delivery: Jul 21
If paid before 14:00
-40%
Part no. 7L6121109D
VW Volkswagen Touareg 7L Water Pipe Hose Coolant Cooling Line 7L6121109D
Promo price
£28.95
£17.37
Free delivery: Jul 21
If paid before 14:00
-5%
Part no. 7P0819926C
Volkswagen Touareg 7P 3.0 TDI Coolant Water Pipe Hose Line 7P0819926C
Promo price
£13.95
£13.25
Free delivery: Jul 21
If paid before 14:00
Part no. MB3G-8B273-PD
VW Volkswagen Amarok Mk2 Water Cooling Coolant Pipe Hose Line MB3G-8B273-PD
£47.95
Free delivery: Jul 21
If paid before 14:00
-5%
Part no. 5N0122157AJ
Volkswagen VW Tiguan 5N Water Pipe Hose Coolant Cooling Line 5N0122157AJ
Promo price
£13.95
£13.25
Free delivery: Jul 21
If paid before 14:00
-15%
Part no. 7N0122073T
Volkswagen VW Tiguan 5N Water Hose Coolant Cooling Tube Pipe Line 7N0122073T
Promo price
£18.95
£16.11
Free delivery: Jul 21
If paid before 14:00
Part no. 1K0121049CG
Volkswagen Golf Mk6 Jetta Mk5 Radiator Water Pipe Hose 1.4 TSI 1K0121049CG
£32.95
Free delivery: Jul 21
If paid before 14:00
Part no. 2E0121049C
VW Volkswagen Crafter 2E 2.0 TDI Coolant Hose Engine Cooling System 2E0121049C
£75.95
Free delivery: Jul 21
If paid before 14:00
-5%
Part no. 5N0121101H
VW Volkswagen Golf Mk6 Coolant Hose Pipe Line 2.0 TDI Diesel Engine 5N0121101H
Promo price
£13.95
£13.25
Free delivery: Jul 21
If paid before 14:00
-5%
Part no. 5Q0122051AT
Volkswagen Golf 5G Water Hose Radiator Coolant Pipe Line 5Q0122051AT
Promo price
£13.95
£13.25
Free delivery: Jul 21
If paid before 14:00
-40%
Part no. 7P0145943
Volkswagen Touareg 7P Intercooler Pipe Hose Line 3.0 TDI 7P0145943
Promo price
£23.95
£14.37
Free delivery: Jul 21
If paid before 14:00
-5%
Part no. 5Q0121064AR
Volkswagen VW Golf Mk7 Audi A3 8V Engine Coolant Pipe Hose Line 5Q0121064AR
Promo price
£13.95
£13.25
Free delivery: Jul 21
If paid before 14:00
Part no. 5WA122157AG
Volkswagen Polo VI AW 2.0 TSI Coolant Water Hose Line Tube Pipe 5WA122157AG
£37.95
Free delivery: Jul 21
If paid before 14:00
Part no. 1K0121049CJ
Volkswagen Scirocco Mk3 Golf MK6 Water Radiator Pipe Hose 1.4 TSI 1K0121049CJ
£47.95
Free delivery: Jul 21
If paid before 14:00
Part no. 1K0121049DK
Volkswagen Scirocco Mk3 1.4 TSI Water Radiator Pipe Hose Line 1K0121049DK
£28.95
Free delivery: Jul 21
If paid before 14:00
Part no. 06F122101A-1
VW Volkswagen Golf Mk6 VI Coolant Water Pipe Hose Line 06F122101A
£13.95
Free delivery: Jul 21
If paid before 14:00
-15%
Part no. 5Q0121156C
Volkswagen VW Golf SV Petrol Engine Coolant Pipe Hose Vent 5Q0121156C
Promo price
£18.95
£16.11
Free delivery: Jul 21
If paid before 14:00
-40%
Part no. 03L121131K
VW Transporter T5 2.0 TDI CAAA Sealing Flange Temperature Sender 03L121131K
Promo price
£23.95
£14.37
Free delivery: Jul 21
If paid before 14:00
Part no. 7L6122096M-2
VW Touareg 7L Water Coolant Hose Pipe Line Tube 3.0 TDI Diesel Engine 7L6122096M
£23.95
Free delivery: Jul 21
If paid before 14:00
Part no. MB3G-8B274-PAD
VW Volkswagen Amarok Mk2 Water Coolant Pipe Hose Line 3.0 TDI MB3G-8B274-PAD
£28.95
Free delivery: Jul 21
If paid before 14:00
-5%
Part no. 5N0121070G
Volkswagen Tiguan 1 5N 2,0 TDi Diesel Coolant Pipe Water Line 5N0121070G
Promo price
£13.95
£13.25
Free delivery: Jul 21
If paid before 14:00
Part no. 7P6122447T
Volkswagen VW Touareg 7P Coolant Hoses Pipes Lines 3.0 TDI 7P6122447T
£37.95
Free delivery: Jul 21
If paid before 14:00
-15%
Part no. 1K0121051AH
Volkswagen VW Golf Mk5 Water Hose Radiator Coolant Pipe Line 1K0121051AH
Promo price
£18.95
£16.11
Free delivery: Jul 21
If paid before 14:00
-5%
Part no. 5Q0122073AN
Volkswagen Golf Mk7 Water Coolant Pipe Hose Line 1.4 TSI 5Q0122073AN
Promo price
£13.95
£13.25
Free delivery: Jul 21
If paid before 14:00
Part no. 7C2121124B
Volkswagen Crafter SY Coolant Hose Pipe Engine Cooling System 7C2121124B
£13.95
Free delivery: Jul 21
If paid before 14:00
Part no. 7L0122101E
Volkswagen Touareg 7L Engine Water Coolant Pipe Hose 3.2 V6 Petrol 7L0122051
£42.95
Free delivery: Jul 21
If paid before 14:00
-5%
Part no. 1K0122109CF
Water Coolant Pipe Volkswagen Audi Skoda Seat 1.6 TDI Cooling LIne 1K0122109CF
Promo price
£13.95
£13.25
Free delivery: Jul 21
If paid before 14:00
Flexible and rigid cooling hoses – durability and fit for popular models
Rubber and silicone hoses for cooling systems – temperature and pressure resistance
Cooling system hoses and pipes are key components that enable the circulation of coolant between the radiator, water pump, thermostat, and the engine. Their efficiency and tightness are essential for the proper operation of the cooling system and for preventing engine overheating. In the Global Parts automotive store, you will find a wide selection of used car parts, including cooling system hoses and pipes, ideal for brands such as BMW, Audi, Mercedes, Volkswagen, Mini, and others.
Differences between flexible and rigid cooling system hoses
Flexible cooling hoses made of EPDM rubber or silicone allow for the compensation of engine vibrations and pressure changes. Rigid pipes (e.g., aluminum or PA12 plastic) are used where shape stability and resistance to high temperatures are required – even up to 150–180°C. Modern vehicles often use a combination of both types, which ensures optimal coolant flow and a longer service life for the entire system.
What functions do cooling system hoses and pipes perform?
Cooling system hoses and pipes play a key role in regulating the engine's operating temperature:
- Coolant transport – Hoses and pipes connect key components of the cooling system, enabling the flow of coolant throughout the entire system.
- Overheating prevention – By circulating the coolant, they maintain the proper engine operating temperature, preventing it from overheating.
- Proper flexibility and tightness – The materials from which the hoses and pipes are made ensure their resistance to high temperatures, pressure, and the effects of coolant. Efficient cooling system hoses and pipes are necessary for the effective operation of the entire cooling system.
Construction and purpose of cooling system hoses and pipes
Cooling system hoses and pipes are components that connect individual fluid circuit subassemblies in the engine compartment. They are used to route coolant between the engine, radiator, heater core, thermostat, and expansion tank, and their routing depends on the engine version and mounting location. A typical component has a profile adapted to factory mounting points, ends for clamps or quick-connectors, and markings helpful for comparing OEM numbers.
Comparison of cooling hose types and verification data
| Component type | Typical construction | Application | What to check before purchase |
|---|---|---|---|
| Flexible hose | EPDM rubber or silicone, reinforcing layer | Sections exposed to vibrations and powertrain movement | End diameter, bend shape, surface condition, clamp type |
| Rigid pipe | Plastic or metal, with quick-connector sockets | Fixed flow paths near the engine or radiator | Mounting points, presence of connectors, engine version compatibility |
| Hose with vent or branch | Body with an additional outlet or tee | Connecting multiple circuits in one system | Branch layout, OEM number, sensor or vent position |
Construction and technical parameters of cooling hoses
A typical cooling system hose consists of several layers: an outer protective layer, a reinforcing layer (reinforced with synthetic fiber), and an inner layer – chemically resistant to coolants. The operating pressure of such hoses is usually 1–2 bar, with a burst strength of up to 5 bar. The use of appropriate materials prevents hoses from cracking during rapid temperature changes, especially in cars with turbocharged engines. Cooling system hoses, commonly known as radiator hoses, can be made of various materials – most often EPDM rubber or silicone, which withstand temperatures from –40°C to as high as +150°C. In high-performance vehicles, e.g., BMW M-series or Audi S-Line, silicone hoses with a reinforced textile construction are used, guaranteeing longer service life and resistance to operating pressures above 2 bar. Flexible hoses allow for the compensation of powertrain vibrations, while rigid sections (e.g., aluminum) ensure stability during high fluid flow.
The importance of connectors, joints, and cooperating elements
A cooling system connector is a rigid end of a pipe or housing to which a coolant hose is attached. It serves to tightly connect circuit elements and often works with a clamp, gasket, or quick-connector. In the case of parts such as an Audi A3 8P water connector, it is worth comparing the OEM number, connection diameter, outlet position, and compatibility with the thermostat housing or cylinder head.
Why is it worth taking care of cooling system hoses and pipes?
Damaged or worn cooling system hoses and pipes can lead to serious cooling system problems. Typical symptoms include:
- Coolant leak – Leaks in hoses or pipes can lead to fluid loss and a drop in coolant levels.
- Engine overheating – Restricted coolant flow resulting from hose damage can lead to engine overheating.
- Noises and vibrations – Improper mounting or damaged hoses can cause vibrations and noises during system operation. At Global Parts, we offer used cooling system hoses and pipes that have undergone detailed quality tests, ensuring their durability and tightness.
Symptoms of damage and cooling hose compatibility - table
| Failure symptom | Possible cause | Recommended action |
|---|---|---|
| Coolant level drop | Micro-leak in the hose | Replace the cooling system hose |
| Engine overheating | Clogged hose or kink | Check for obstructions, replace |
| Vibrations or gurgling | Loose hose mounts | Tighten clamps, check brackets |
| Low engine operating temperature | Excessive flow – lack of resistance | Check thermostat operation |
How to choose the right cooling system hoses and pipes?
When choosing cooling system hoses and pipes, pay attention to several key aspects:
- Vehicle model fitment – Every cooling system has its specific technical requirements. At Global Parts, you will find cooling system hoses and pipes perfectly matched to BMW, Audi, Mercedes, Volkswagen, Mini, and others.
- Technical condition – Ensure that the hoses and pipes are free from cracks, bulges, and other damage.
- Material resistance – Choose hoses and pipes made of materials resistant to high temperatures and operating fluids.
Part selection procedure
To correctly select a cooling system hose, it is worth using the vehicle's VIN or the part's OEM designation. In the Global Parts system, searching is done automatically by engine code or catalog number, which minimizes the risk of a mismatch. As a result, the hoses are fully compatible with the water pump, radiator, and thermostat, and the entire system maintains factory tightness.
Selecting hoses by circuit, mounts, and car version
A cooling system hose is used to route fluid exactly between indicated circuit points, which is why it is not a universal element. When choosing an element such as a radiator hose, check the mounting side, end diameters, presence of quick-connectors, and compatibility with thermostats and cooling system housings. If you are looking for a subassembly such as a hose from the radiator to the engine, it is also worth comparing the bend path, support points, and fitment to water radiators and expansion tanks.
Why choose used cooling system hoses and pipes?
Used car parts, such as cooling system hoses and pipes, are a practical solution that allows for savings while maintaining high quality. By choosing used cooling system hoses and pipes, you gain:
- Lower costs – Used components are significantly cheaper than new ones but offer equally high quality.
- Ecology – Recycling car parts supports environmental protection and reduces waste.
- Wide selection – In our store, you will find cooling system hoses and pipes for the most popular car brands.
Hose cooperation with other cooling system elements
The efficiency of hoses depends not only on the material itself but also on the condition of cooperating elements. In practice, it is worth checking connections with cooling system water pumps, the thermostat housing, the radiator, and hose clamps, and an additional source of knowledge is our guide Summer heat vs. cooling system: used radiators and fans as a guarantee of savings. Such verification makes it easier to assess whether the problem stems from the hose, a leaking connector, or improper system venting.
How to take care of cooling system hoses and pipes?
To ensure cooling system hoses and pipes work reliably for a long time, it is worth following a few rules:
- Regularly check the condition of hoses and pipes to prevent coolant leaks.
- Monitor the coolant level – a sudden drop may indicate a leak in the hoses.
- Replace damaged or worn elements on time to avoid more serious cooling system problems. If replacement is necessary, at Global Parts you will find suitable used auto parts that will restore full efficiency to your cooling system.
FAQ
| Question | Answer |
|---|---|
| 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. |
Summary: cooling system hoses and pipes at the Global Parts automotive store
Cooling system hoses and pipes are key elements ensuring efficient coolant flow and maintaining optimal engine operating temperature. The Global Parts offer includes used parts matched to vehicles from brands such as Mercedes, Audi, BMW, as well as many other manufacturers. When selecting, it is worth checking the OEM number, fuel type, condition, interchangeable numbers, and compatibility with the engine version and mounting location. We invite you to contact us – we are here to help you! For more information and interesting facts, we also invite you to visit our automotive blog.