🔧 Tucson - Radiator Hose Replacement

Your Tucson uses radiator hoses to move coolant between the engine and radiator. Replacing a leaking, swollen, or cracked hose prevents overheating and coolant loss.

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

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⚠️ Safety & Precautions

• ⚠️ Never open the cooling system when hot; hot coolant can spray and burn you.
• ⚠️ Support the SUV with jack stands before working underneath.
• ⚠️ Keep coolant away from pets and kids; it’s toxic and sweet-smelling.
• ⚠️ Use only Hyundai-approved P-OAT coolant (pink) or equivalent; mixing types can cause sludge/leaks.
• 🔋 Battery disconnect is not required for this repair.

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🔧 Required Tools

You'll need the following tools for this repair:

• Safety glasses
• Nitrile gloves
• Floor jack (rated 3-ton minimum)
• Jack stands (rated 3-ton minimum)
• Wheel chocks
• Drain pan (at least 2-gallon)
• Funnel with long neck
• Pliers for spring clamps
• Pick tool (small)
• Flat-blade screwdriver
• 10mm socket
• Ratchet (3/8")
• Extension (3"–6")
• Shop towels
• Work light

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🔩 Required Parts

HowToo sells all the parts you need for this repair:

• Radiator hose (upper) - Qty: 1
• Radiator hose (lower) - Qty: 1
• Hose clamps - Qty: 2-4
• Engine coolant (Hyundai P-OAT, prediluted 50/50) - Qty: 1-2 gallons

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📋 Before You Begin

• Park on level ground, set the parking brake, and chock the rear wheels.
• Let the engine cool completely (best: sit overnight).
• Turn the cabin heat to HOT later during bleeding (this opens the heater circuit so air can escape).
• If doing the lower hose, plan to raise the front and remove the lower splash shield.

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🔨 Step-by-Step Instructions

Follow these steps in order:

Step 1: Confirm which hose you’re replacing

• Upper hose: runs from the top of the radiator to the engine.
• Lower hose: runs from the bottom of the radiator to the engine (harder to access).
• Use your work light to trace the hose and confirm the exact one.

Step 2: Relieve pressure safely

• Put on safety glasses and nitrile gloves.
• Place shop towels over the coolant reservoir cap.
• Slowly loosen the cap by hand to release any leftover pressure, then remove it.

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

• Place a drain pan (at least 2-gallon) under the radiator drain area.
• If needed for access (common for lower hose), raise the front using a floor jack (rated 3-ton minimum) and support with jack stands (rated 3-ton minimum).
• Remove the lower splash shield as needed using a 10mm socket, ratchet (3/8"), and extension (3"–6").
• Open the radiator drain cock (if accessible) with a flat-blade screwdriver and drain into the pan.
• Tip: Drain just enough to stop spills.

Step 4: Remove the old hose clamps

• Move the drain pan under the hose connection you’re opening.
• If you have spring clamps, squeeze and slide them back using pliers for spring clamps. (A spring clamp is the factory “squeeze-to-move” clamp.)
• If you have worm-gear clamps, loosen them using a flat-blade screwdriver.

Step 5: Break the hose loose and remove it

• Twist the hose by hand to break it free from the fitting.
• If it’s stuck, gently work around the edge using a pick tool (small) to separate the hose from the neck.
• Pull the hose off and aim it into the drain pan (at least 2-gallon) to catch any coolant.
• Do not pry hard on the radiator neck. It can crack.

Step 6: Prep the fittings

• Wipe the radiator neck and engine neck clean using shop towels.
• Make sure the sealing surfaces are smooth and free of old rubber.

Step 7: Install the new radiator hose

• Slide the clamps onto the new hose first.
• Push the hose fully onto each fitting until it bottoms out.
• Position spring clamps back in the same grooves/marks as the original using pliers for spring clamps.
• If using worm-gear clamps, tighten with a flat-blade screwdriver until snug.
• Tip: Match the old hose routing exactly.

Step 8: Reinstall the splash shield (if removed)

• Reinstall the lower splash shield using a 10mm socket, ratchet (3/8"), and extension (3"–6").
• Tighten the fasteners securely with the 10mm socket.

Step 9: Refill coolant

• Use a funnel with long neck to refill the coolant reservoir with Hyundai P-OAT, prediluted 50/50 to the MAX line.
• If you drained a lot, refill slowly to avoid trapping air.

Step 10: Bleed air from the cooling system

• Start the engine and set the cabin heat to HOT.
• Let it idle while watching the coolant level; add coolant with the funnel with long neck as the level drops.
• Carefully squeeze the upper hose a few times (with nitrile gloves on) to help move trapped air.
• When the radiator fan cycles on and off and heat blows hot inside, install the reservoir cap hand-tight.

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✅ After Repair

• With the engine running, inspect both hose ends for leaks using a work light.
• Take a short 10-15 minute drive, then recheck for leaks.
• After the engine cools fully, recheck coolant level and top off to the MAX line using the funnel with long neck.
• Dispose of old coolant properly (most parts stores accept it).

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💰 DIY vs Shop Cost

Shop Cost: $250-$550 (parts + labor)

DIY Cost: $40-$140 (parts only)

You Save: $110-$510 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.

Quick question: Are you replacing the upper hose, the lower hose, or both?