🔧 Accord - Radiator Hose Replacement

The radiator hoses carry coolant between the engine and the radiator. Replacing a swollen, cracked, leaking, or soft hose helps prevent overheating and sudden coolant loss.

Difficulty Level: Intermediate | 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 front of your Accord with jack stands; never rely on a jack alone.
• ⚠️ Keep coolant off paint, belts, and the alternator; wipe spills right away.
• ⚠️ Coolant is toxic; keep it away from kids/pets and dispose of it properly.
• 🔋 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 2-ton minimum)
• Jack stands (rated 2-ton minimum)
• Wheel chocks
• Safety glasses
• Nitrile gloves
• Drain pan (at least 2-gallon)
• Funnel (spill-proof style preferred)
• Pliers (tongue-and-groove)
• Hose clamp pliers (specialty)
• Flat-blade screwdriver
• Pick tool (specialty)
• 10mm socket
• 3/8" drive ratchet
• Trim clip removal tool
• Shop towels

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🔩 Required Parts

HowToo sells all the parts you need for this repair:

• Radiator upper hose - Qty: 1
• Radiator lower hose - Qty: 1
• Radiator hose clamp set - Qty: 1
• Honda-approved coolant (Type 2 premix) - Qty: 1-2 gallons

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📋 Before You Begin

• Park on level ground, set the parking brake, and place wheel chocks behind the rear tires.
• Let the engine cool completely (ideally overnight).
• Set the cabin temperature to HI before starting; this helps coolant flow through the heater core during bleeding.
• If you’ll access the lower hose from underneath, raise the front using a floor jack and support it on jack stands.

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🔨 Step-by-Step Instructions

Follow these steps in order:

Step 1: Identify which hose you’re replacing

• The upper radiator hose runs from the top of the radiator to the engine.
• The lower radiator hose runs from the bottom of the radiator to the engine.
• Replace both if they’re the same age.

Step 2: Remove splash shield (if needed for the lower hose)

• Use a trim clip removal tool and/or 10mm socket with a ratchet to remove the front lower splash shield fasteners.
• Set all clips/bolts aside so nothing gets lost.

Step 3: Drain enough coolant to get below the hose level

• Place a drain pan under the radiator.
• Slowly loosen the radiator cap (only if fully cool) by hand.
• Open the radiator drain (petcock) by hand or with a flat-blade screwdriver if it has a slotted head.
• Drain until the coolant level is below the hose you’re removing, then close the drain snugly by hand.

Step 4: Release the hose clamps

• Use hose clamp pliers (specialty) or pliers to squeeze the spring clamp and slide it back onto the hose.
• A spring clamp is a reusable clamp you squeeze to open; it keeps tension as the hose expands/contracts.

Step 5: Remove the old hose

• Twist the hose by hand to break it free.
• If it’s stuck, use a pick tool (specialty) to gently lift the hose edge to break the seal, then twist again.
• Pull the hose off and aim it into the drain pan to catch remaining coolant.
• Do not pry hard against the radiator neck; it can crack.

Step 6: Clean and inspect the connections

• Use shop towels to clean the radiator neck and engine outlet/inlet.
• Look for corrosion, pitting, or cracks around the radiator neck and fittings.

Step 7: Install the new hose and clamps

• Slide the new clamps onto the new hose first (use pliers if needed).
• Push the hose fully onto each fitting until it bottoms out (use your hands; no tools needed).
• Reposition the spring clamps using hose clamp pliers (specialty) so they sit behind the raised bead on the fitting.
• Clamp behind the bead prevents blow-off.

Step 8: Reinstall the splash shield (if removed)

• Reinstall the splash shield using the 10mm socket, ratchet, and trim clip removal tool (to press clips back in).
• Make sure nothing rubs the hose when the shield is back in place.

Step 9: Refill coolant

• Insert a funnel into the radiator fill neck.
• Fill with Honda-approved coolant (Type 2 premix) until full.
• Fill the coolant reservoir to the MAX line.

Step 10: Bleed air from the cooling system

• Start the engine and let it idle with the radiator cap off.
• Turn the heat to HI and the fan to low.
• Watch the coolant level; add coolant with the funnel as the level drops.
• Gently squeeze the upper hose by hand (wear gloves) to help move trapped air.
• When the radiator fan cycles on and off and bubbles slow down, top off and install the radiator cap by hand.

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✅ After Repair

• With the engine running, check both hose ends for leaks using a flashlight and safety glasses.
• Test drive 10-15 minutes, then recheck the reservoir level after the engine cools; top off to MAX if needed.
• Confirm the temperature gauge stays normal and the heater blows hot.
• Look under the car the next morning for any drips.

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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 1.0-2.0 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.