Guida all'acquisto dei tubi del radiatore
Ultimo aggiornamento: 24 aprile 2026
Radiator hoses (upper and lower) carry hot coolant from the engine to the radiator and return cooled coolant back to the engine. They withstand high temperatures, pressure, and chemical exposure. A burst hose causes instant coolant loss and engine overheating. Proactive replacement every 5-10 years prevents unexpected failure.
Radiator hose inspection
Radiator hoses fail from the inside out and can appear fine externally while being weakened internally. Regular hands-on inspection is essential.
- Squeeze the hose when cold — it should spring back, not stay compressed or feel swollen
- Check for surface cracks, especially near the clamp area
- Look for coolant residue or white mineral deposits at connections
- The lower hose contains a spring to prevent collapse under suction — ensure it is intact
- Replace both upper and lower hoses at the same time if one has failed
Replacement advice
Radiator hose replacement is straightforward. Drain the coolant first, release the clamps, and twist the hose to break the seal before pulling it off.
- Use new clamps — old worm-drive clamps lose their clamping force over time
- Flush the cooling system and refill with the correct coolant concentration
- Inspect the radiator pipe stubs for corrosion or pitting that could prevent a good seal
- Bleed the system of air after refilling to prevent hot spots and overheating
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Sostituzione dei tubi superiore e inferiore del radiatore — rigonfiamento, crepe e come scegliere il materiale e la dimensione giusta per la tua auto.
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Domande frequenti
How long do radiator hoses last?
Typically 5-10 years or 60,000-100,000 miles. Inspect them at every service. The lower hose is often the first to fail due to heat and suction stress.
Why does the lower radiator hose collapse?
The lower hose is on the suction side of the water pump. An internal spring prevents collapse. If the spring breaks or is missing in a replacement hose, the hose collapses under suction and blocks coolant flow.
Can I use a universal radiator hose?
Straight sections may work with universal hose, but moulded radiator hoses must be the correct shape to route properly and avoid kinking or rubbing against other components.
Should I flush the cooling system when replacing hoses?
Yes. It is an ideal time to flush out old coolant, remove sediment, and refill with fresh coolant at the correct concentration. This extends the life of the new hoses and other cooling components.
How much does radiator hose replacement cost?
The price of a radiator hose depends on your exact vehicle and the brand you choose. Enter your registration above to see parts confirmed to fit, then compare prices from the brands we stock on this page. Free UK delivery on orders over £99.
Guide correlate
No cold air, clutch not engaging, and seized compressors — A/C compressor types, oil charging requirements, and new vs remanufactured options.
Coolant Flange Buying GuideCoolant flanges, thermostat housings, and outlet pipes — plastic vs aluminium, common failure modes, and correct sealant for leak-free installation.
Coolant Temperature Sensor Buying GuideIncorrect temperature gauge, poor fuel economy, and cooling fan issues — diagnosing a faulty coolant temperature sensor and selecting a replacement.
Engine Oil Cooler Buying GuideWater-cooled vs air-cooled oil coolers, oil-in-coolant mixing symptoms, and how to choose and fit a replacement oil cooler without disturbing the coolant system.
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