🔧 Radiator Hose - Replacement

You’ll be removing the old coolant hose, installing a new one, and refilling/bleeding the cooling system on your CR-V. This keeps the engine from overheating and prevents leaks that can leave you stranded.

Difficulty Level: Beginner | Estimated Time: 1–2 hours

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⚠️ Safety & Precautions

• ⚠️ Never open the radiator cap or remove hoses on a hot engine. Let the engine cool completely (at least 1–2 hours after driving).
• ⚠️ Hot coolant can cause serious burns; work only when the radiator cap is cool to the touch.
• ⚠️ Coolant is poisonous to people and animals. Keep it off your skin and away from kids/pets, and clean spills immediately.
• ⚠️ Support the front of your CR-V securely with jack stands; never rely only on a floor jack.
• ⚠️ Keep tools and hands clear of the radiator fan; it can start when the engine is warm or running.
• Battery disconnect is not required for this job.

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🔧 Required Tools

You'll need the following tools for this repair:

• 🧰 Floor jack (rated 3-ton minimum)
• 🧰 Jack stands (rated 3-ton minimum)
• 🧰 Wheel chocks
• 🧰 10mm socket
• 🧰 3/8" drive ratchet
• 🧰 3/8" drive extension (6")
• 🧰 Hose clamp pliers (specialty)
• 🧰 Long needle-nose pliers
• 🧰 Flathead screwdriver (small)
• 🧰 Utility knife or hose pick tool (specialty)
• 🧰 Drain pan (at least 10 liters)
• 🧰 Plastic funnel
• 🧰 Clean rags or shop towels
• 🧰 Flashlight
• 🧰 Work gloves
• 🧰 Safety glasses

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🔩 Required Parts

HowToo sells all the parts you need for this repair:

• 🔩 Upper radiator hose (engine to top of radiator) - Qty: 1
• 🔩 Lower radiator hose (engine to bottom of radiator) - Qty: 1
• 🔩 Radiator hose clamps (spring or worm-drive, correct sizes) - Qty: 4
• 🔩 Engine coolant (Honda Type 2 premixed or equivalent, blue) - Qty: 2–3 gallons
• 🔩 Coolant-safe leak detection dye (optional) - Qty: 1
• 🔩 Radiator drain plug gasket (if damaged or leaking) - Qty: 1

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📋 Before You Begin

• Park your CR-V on level ground, set the parking brake, and place wheel chocks behind the rear wheels.
• Let the engine cool until you can comfortably hold your hand on the upper radiator hose and radiator cap.
• Turn heater controls inside the cabin to HOT and the fan to LOW before you start bleeding coolant later. This opens the heater core.
• Gather all tools and parts so you don’t have to stop mid-way.

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🔨 Step-by-Step Instructions

Follow these steps in order:

Step 1: Raise and support the front

• Use the floor jack at the front jacking point (center under the engine crossmember) to lift the front of your CR-V.
• Place jack stands under the left and right front pinch welds (sides under the doors) and lower the car gently onto them with the floor jack.
• Give the car a small push to make sure it’s stable before going underneath.

Step 2: Remove the engine under-cover (if equipped)

• Use a 10mm socket and 3/8" ratchet to remove the small bolts holding the plastic engine splash shield under the front of the engine.
• There may also be plastic clips; carefully pry the center pins up with a flathead screwdriver if needed.
• Lower the cover and set it aside.

Step 3: Drain some coolant

• Place the drain pan under the radiator drain area (bottom passenger side of radiator).
• Slowly loosen the radiator cap by hand to release any remaining pressure, but only if the engine is fully cool.
• Use your fingers or a flathead screwdriver to open the white plastic radiator drain plug (petcock) on the bottom of the radiator. Turn it counterclockwise.
• Let coolant drain until the stream slows down (usually 3–5 liters).
• Close the drain plug by hand, then snug it gently with the flathead screwdriver. Do not overtighten.

Step 4: Locate upper and lower radiator hoses

• The upper radiator hose runs from the top of the radiator on the passenger side to the top/front of the engine (near the cylinder head).
• The lower radiator hose runs from the bottom of the radiator on the passenger side to the water pump area at the bottom/front of the engine.
• Decide if you are replacing both hoses (recommended) or just one.

Step 5: Remove the upper radiator hose clamps

• Most CR-Vs use spring clamps. Spring clamps are metal rings that squeeze with pliers; they hold tension on the hose.
• Use hose clamp pliers to squeeze the ears of the clamp at the engine side of the upper hose and slide the clamp back along the hose away from the fitting.
• If you don’t have clamp pliers, use long needle-nose pliers, but be careful not to slip.
• Repeat with the clamp at the radiator side of the upper hose.

Step 6: Remove the upper radiator hose

• Twist the hose by hand to break it loose at the engine side. If it’s stuck, gently work a flathead screwdriver under the hose edge and twist slightly.
• Pull the hose off the engine side fitting and direct any remaining coolant into the drain pan.
• Do the same at the radiator side fitting.
• If the hose is extremely stuck or cracked, carefully slice it lengthwise with a utility knife and peel it off. Do not cut into metal fitting.

Step 7: Install the new upper radiator hose

• Compare the new hose to the old one to confirm length and bends match.
• Slide new hose clamps onto the new hose (one at each end) before installing.
• Push the hose fully onto the engine fitting by hand until it bottoms out (no metal showing).
• Push the hose fully onto the radiator fitting the same way.
• Use hose clamp pliers (or needle-nose pliers) to position clamps over the raised bead/ridge on each fitting. Clamp must sit behind bead.

Step 8: Remove the lower radiator hose clamps

• Move your drain pan under the lower hose connection at the radiator; more coolant will drain when you remove this hose.
• Use hose clamp pliers to squeeze the clamp at the radiator end of the lower hose and slide it back onto the hose.
• Do the same for the clamp at the engine (water pump) end of the hose.

Step 9: Remove the lower radiator hose

• Twist the lower hose at the radiator side by hand to break it loose, then pull it off while catching coolant in the drain pan.
• Repeat twisting and pulling at the engine side connection.
• If stuck, gently use a flathead screwdriver or carefully cut along the hose with a utility knife as in Step 6.

Step 10: Install the new lower radiator hose

• Match the new lower hose to the old one to confirm shape and orientation.
• Slide new hose clamps onto the new hose.
• Install the hose onto the engine side fitting first, pushing until fully seated.
• Install the radiator side next, again making sure the hose is fully seated.
• Use hose clamp pliers to position clamps behind the raised bead on each fitting.

Step 11: Check other hose connections and clean up

• Wipe all hose connections with clean rags so any future leaks are easy to see.
• Verify every clamp is straight, centered over the fitting, and fully seated.
• Make sure the hoses are not rubbing any sharp edges or moving parts (fan, belts).

Step 12: Reinstall the engine under-cover

• Lift the plastic under-cover back into place.
• Use a 10mm socket and 3/8" ratchet to reinstall the bolts you removed earlier. Torque to 8–10 Nm (6–7 ft-lbs).
• Reinstall any plastic clips by pushing them back into the holes and pressing the center pins down.

Step 13: Lower the vehicle

• Use the floor jack to lift the front slightly off the jack stands.
• Remove the jack stands and lower the CR-V carefully to the ground.

Step 14: Refill the cooling system

• Make sure the radiator drain plug is closed.
• Place a funnel into the radiator filler neck.
• Slowly pour Honda Type 2 coolant (or equivalent) into the radiator until it is full.
• Fill the coolant reservoir to the MAX line.

Step 15: Bleed air from the system

• Leave the radiator cap off.
• Start the engine and let it idle. Watch the coolant level in the radiator.
• After a few minutes, you’ll see small bubbles; top off coolant as the level drops.
• Turn the cabin heater to HOT and fan to LOW to open the heater core.
• Once the upper radiator hose is warm and you see steady coolant flow (no more big bubbles), top off the radiator one last time.
• Install the radiator cap tightly by hand.
• Check and adjust the reservoir level to the MAX mark.

Step 16: Final leak check

• Let the engine reach normal operating temperature, then shut it off.
• Use a flashlight to inspect all hose connections (both ends of both hoses) for any signs of leaks.
• Let the engine cool completely and recheck the coolant level in the radiator and reservoir; top off if needed.

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✅ After Repair

• Take a short test drive (10–15 minutes) while watching the temperature gauge. It should stay in the normal middle range.
• Park, shut the engine off, and inspect under the front of the CR-V and around the new hoses for any drips.
• Next morning (engine cold), recheck coolant level in the radiator and reservoir and top off to the MAX line if it dropped a bit.
• Over the next few days, keep an eye on the temperature gauge and the ground where you park.

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💰 DIY vs Shop Cost

Shop Cost: $250–$450 (parts + labor)

DIY Cost: $60–$140 (parts only)

You Save: $190–$310 by doing it yourself!

Shop labor rates vary but typically run $100–$150/hour. This repair takes a shop approximately 1.0–1.5 hours.

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🎯 Ready to get started?

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