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How To Replace A Lower Radiator Hose

If you’re like most car enthusiasts, you love tinkering with your own vehicle. But even the most experienced DIYer can sometimes make a mistake. That’s why it’s important to have a car maintenance guide or checklist handy in case something goes wrong. That’s why we’re bringing you this helpful guide on how to replace a lower radiator hose—just in time for summer! This guide will teach you everything you need to know about replacing a hose, from the basics to more intricate repairs. So whether you need to replace a hose on your own or take your car in for service, read on to learn everything you need to know.

What is a Radiator Hose?

If your car has an automatic climate control system, you will likely also need to replace the lower radiator hose. This is because the coolant in the system circulates through the engine and goes down into the radiator. If it becomes cracked or leaky, the coolant can escape and cause problems with your car’s temperature.

Types of Radiator Hoses

Lower radiator hose types include metal, rubber, and plastic.
Metal radiator hoses are the stiffest and can last the longest. Rubber radiator hoses are the softest and typically last the shortest amount of time. Plastic radiator hoses are usually in between metal and rubber in terms of stiffness.
When it comes to replacing a lower radiator hose, there are a few things to keep in mind:
-Make sure to use the right type of hose for your car’s make and model.
-Check the fitment specs of your new hose before buying it.
-Relieve any pressure from the system before replacing the hose.

How to Replace a Lower Radiator Hose

A radiator hose can fail and require replacement. Replacement is typically a simple, DIY project. Here’s how to do it:

1. Park your car on a level surface with the engine off.
2. Remove the radiator cap and unscrew the hoses from the radiator. Be sure to label each hose as you take it off so you can reattach them in the correct sequence when you replace them.
3. Loosen the bolts that connect the lower radiator hose to the housing. Carefully pull up on the hose until it comes free of the bolt holes, then remove it completely.
4. Install a new lower radiator hose by securing it to the housing with the bolts and reversing steps 2-3. Be sure to torque these bolts to 18 ft./lbs./in (30 Nm).

How to Clean a Radiator Hose

One of the most common repairs or replacements that mechanics are called to perform is replacing a radiator hose. A radiator hose is a long, thin metal tube that carries hot water and/or coolant from the engine to the radiator. A blocked or kinked radiator hose can cause poor performance, overheating, and even a fire. Here are four steps on how to clean a radiator hose:

1. Locate the blocked or kinked radiator hose.
2. Use a plunger to clear any debris or sediment from the end of the hose.
3. Pour a pot of boiling water onto the end of the hose and let it boil for two minutes.
4. Drain off the boiled water and use a vacuum cleaner to remove any debris or sediment from the hose’s interior surface.


If you’re experiencing coolant leakage from your lower radiator hose, it’s time to replace it. Follow our simple guide and you’ll be back on the road in no time.