Installing an Upper Radiator Hose Installing an Upper Radiator Hose

What You'll Need
Metal Band Clamps

The upper radiator hose in a car engine provides coolant to the radiator to keep it from overheating. Occasionally, these hoses may be ripped, torn or corroded to the point where the coolant begins to leak out. If this is the case, the hose will need to be replaced.

Step 1 – Remove the Clamps

Locate the two ends of the upper radiator hose. One end should, obviously, connect to the radiator while the other should be attached to the thermostat intake tube. Both of these ends should be secured with hose clamps. Loosen the clamps (usually the clamps can be loosened by pushing two tabs together, but depending on the type of hose clamp a screwdriver might be needed)  and push the them each back towards the opposite end of the hose. Once loose, both ends of the hose should easily slip off their connections.

Step 2 – Attach the New Hose

Attach the two ends of the new radiator hose to the same connections on the radiator and the thermostat intake tube that the old hose was removed from. To do this, simply slip each end of the hose over the connections.

Step 3 – Secure Hose with Clamps

Wrap a metal band clamp over each end of the hose: one clamp where the hose attaches to the radiator inlet tube and another over where the hose connects to the thermostat intake tube. Tighten these clamps with a screwdriver until they feel secure. Turn the engine on and let it run for a bit while looking for leaks.

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