🔧 CR-V - Radiator Hose Replacement

Replacing a radiator hose means removing the old rubber hose and clamps, installing a new hose, then refilling and bleeding the coolant system. This fixes leaks, swelling/soft spots, or cracked hoses that can cause overheating.

Difficulty Level: Beginner | Estimated Time: 1.0-2.0 hours

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⚠️ Safety & Precautions

• ⚠️ Never open the radiator cap on a hot engine; hot coolant can spray and burn you.
• ⚠️ Support the CR-V with jack stands if you lift it; never rely on a floor jack alone.
• ⚠️ Coolant is toxic to people and pets; catch it in a drain pan and clean spills immediately.
• ⚠️ Keep hands/loose clothing away from the cooling fan; it can turn on unexpectedly.
• Battery disconnect is not required for this job.

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🔧 Required Tools

You'll need the following tools for this repair:

• Safety glasses
• Nitrile gloves
• Drain pan (at least 2-gallon)
• Floor jack (rated 3-ton minimum)
• Jack stands (rated 3-ton minimum)
• Wheel chocks
• Pliers (hose clamp pliers) (specialty)
• Channel-lock pliers
• Flathead screwdriver
• Pick tool (specialty)
• Trim clip removal tool
• 10mm socket
• 3/8" ratchet
• 3" extension
• Funnel
• Rags
• Shop light

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🔩 Required Parts

HowToo sells all the parts you need for this repair:

• Upper radiator hose - Qty: 1
• Lower radiator hose - Qty: 1
• Radiator hose clamps - Qty: 2
• Honda Long Life Antifreeze/Coolant Type 2 (premixed) - Qty: 1-2 gallons

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📋 Before You Begin

• Park on level ground, set the parking brake, and let the engine cool completely (at least 2 hours).
• Identify the hose you’re replacing:
  • Upper radiator hose goes from the top of the radiator to the engine (thermostat housing area).
  • Lower radiator hose goes from the bottom of the radiator down to the engine.
• Quick question (so I can tailor the exact steps): are you replacing the upper hose, the lower hose, or both?
• Hose clamp pliers are pliers that lock a spring clamp open.
• If you’ll be under the front, place wheel chocks behind the rear wheels and lift the front safely with a floor jack and jack stands.

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🔨 Step-by-Step Instructions

Follow these steps in order:

Step 1: Make sure the system is depressurized

• With the engine fully cold, use a rag and slowly twist the radiator cap to the first stop to release any leftover pressure.
• Remove the cap completely by hand and set it aside.

Step 2: Set up to catch coolant

• Place a drain pan (at least 2-gallon) under the radiator area.
• If needed for access, remove the lower splash shield fasteners using a trim clip removal tool and 10mm socket with a 3/8" ratchet.

Step 3: Drain enough coolant so it won’t pour everywhere

• If replacing the upper hose only, you can often skip draining and just be ready for a small spill.
• If replacing the lower hose, expect a larger spill—keep the drain pan positioned under the lower radiator outlet.
• Turning the pan sideways helps catch the first gush.

Step 4: Remove the old hose clamps

• For spring-style clamps: squeeze and slide the clamp back using pliers (hose clamp pliers) (specialty) or channel-lock pliers.
• For screw-style clamps: loosen using a flathead screwdriver.

Step 5: Break the hose loose (without damaging the fittings)

• Twist the hose back and forth by hand to break it free.
• If it’s stuck, carefully work the edge loose with a pick tool (specialty) around the nipple (metal/plastic outlet).
• Pull the hose off and let coolant drain into the drain pan.
• Do not pry hard on the radiator neck; it can crack.

Step 6: Prep the connections

• Wipe the radiator outlet and engine outlet clean using rags.
• Make sure old rubber is not stuck to the outlet.

Step 7: Install the new hose and clamps

• Slide the new clamp(s) onto the new hose before installing, by hand.
• Push the new hose fully onto the radiator outlet and the engine outlet by hand until it bottoms out.
• Reposition the clamps in the same “band” area as factory (typically just behind the raised bead on the outlet) using pliers (hose clamp pliers) (specialty) or channel-lock pliers.
• If using screw-style clamps, tighten with a flathead screwdriver until snug and the hose cannot rotate by hand.

Step 8: Reinstall any shields you removed

• Reinstall the splash shield using the 10mm socket, 3/8" ratchet, and trim clip removal tool.

Step 9: Refill coolant

• Using a funnel, fill the radiator with Honda Long Life Antifreeze/Coolant Type 2 (premixed) until full.
• Fill the overflow reservoir to the MAX line by hand.

Step 10: Bleed air from the cooling system

• Leave the radiator cap off.
• Start the engine and let it idle.
• Set the HVAC to full hot (temperature to HOT) so coolant flows through the heater core.
• Watch the coolant level at the radiator neck; add coolant with the funnel as the level drops.
• When the engine warms up, you should see flow and occasional bubbles; keep topping off until bubbles mostly stop.
• Once stable, install the radiator cap by hand.
• Heat cycling may drop the reservoir level later.

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✅ After Repair

• With the engine running, inspect both hose ends for leaks using a shop light.
• Take a 10–15 minute drive while watching the temperature gauge.
• Let the CR-V cool fully, then recheck the overflow reservoir and top off to MAX if needed.
• Check for dried coolant residue or new drips under the front after the next drive.

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💰 DIY vs Shop Cost

Shop Cost: $250-$500 (parts + labor)

DIY Cost: $40-$120 (parts only)

You Save: $130-$460 by doing it yourself!

Shop labor rates vary but typically run $100-$150/hour. This repair takes a shop approximately 1.0-2.0 hours.

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🎯 Ready to get started?

HowToo makes it easy: same-day/2-day shipping on every part, plus all the tools and specialty tools you need! Check out the parts and tools sections below to add everything to your cart.