🔧 Radiator Hose - Replacement

On your Tundra, the radiator hose carries engine coolant between the engine and radiator. A cracked, soft, swollen, or leaking hose can cause overheating fast, so replace it as soon as you see seepage or damage.

Difficulty Level: Intermediate | Estimated Time: 1.5-2.5 hours

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⚠️ Safety & Precautions

• Work only on a cold engine. Hot coolant can cause serious burns.
• Use jack stands if you raise the truck. Never rely on a floor jack alone.
• Keep coolant away from children and pets; it is toxic.
• If you disconnect the battery, save radio presets first.
• Use caution around the fan shroud and cooling fan area.

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🔧 Required Tools

You'll need the following tools for this repair:

• 8mm socket
• 10mm socket
• Ratchet
• Short extension
• Flat-blade screwdriver
• Pliers
• Drain pan
• Funnel
• Shop towels
• Coolant tester
• Jack stands
• Floor jack (rated 3-ton minimum)
• Safety glasses
• Gloves

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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
• Coolant hose clamps - Qty: 2
• Toyota Super Long Life Coolant - Qty: 2-3 gallons
• Radiator cap - Qty: 1

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📋 Before You Begin

• Park on level ground and set the parking brake.
• Let the engine cool completely before opening anything in the cooling system.
• If you want easier access, raise the front of the truck and support it with jack stands.
• Have a drain pan ready before opening the radiator drain.

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🔨 Step-by-Step Instructions

Follow these steps in order:

Step 1: Drain the cooling system

• Place the drain pan under the radiator drain area.
• Open the radiator drain cock carefully by hand, or use pliers if it is snug.
• Drain enough coolant so the hose level is below the hose you are replacing.
• Close the drain cock by hand when finished.

Step 2: Remove the air intake pieces if needed

• If the hose is hard to reach, remove the intake duct or air box cover using the 8mm socket or 10mm socket.
• Set all clips and fasteners aside in order.
• Take a quick photo first.

Step 3: Remove the old hose

• Use pliers to move the spring clamps back, or use a flat-blade screwdriver to loosen worm clamps if equipped.
• Twist the hose gently to break it loose, then pull it off the radiator neck and engine pipe.
• If it sticks, work it free slowly so you do not damage the plastic radiator neck.

Step 4: Clean the hose connections

• Use a clean shop towel to wipe the radiator neck and engine pipe.
• Remove old rubber stuck to the metal or plastic fittings.
• Check for cracks, corrosion, or rough edges before installing the new hose.

Step 5: Install the new hose

• Compare the new hose to the old one and match the bends.
• Slide the clamps onto the hose first, then push the hose fully onto both fittings.
• Position the clamps over the raised bead on each fitting.
• If your hose uses spring clamps, make sure they sit fully in place.

Step 6: Reassemble removed parts

• Reinstall the intake duct or air box parts using the 8mm socket or 10mm socket.
• Make sure all clips and hoses are fully seated.

Step 7: Refill the cooling system

• Use a funnel to refill with Toyota Super Long Life Coolant.
• Fill slowly to reduce air pockets.
• Leave the radiator cap off for the initial warm-up if needed.

Step 8: Bleed air from the system

• Start the engine and let it idle with the heater set to hot.
• Watch the coolant level and add more as the air escapes.
• Squeeze the hose gently by hand a few times to help move trapped air.
• Install the radiator cap once the level stabilizes and no more bubbles appear.

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✅ After Repair

• Check for leaks at both hose ends with the engine running and again after a short test drive.
• Verify the temperature gauge stays normal.
• Recheck coolant level the next day when the engine is cold.
• If the hose was replaced due to overheating, monitor coolant level for several days.

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💰 DIY vs Shop Cost

Shop Cost: $220-$480 (parts + labor)

DIY Cost: $45-$140 (parts only)

You Save: $175-$340 by doing it yourself!

Shop labor rates vary but typically run $100-$150/hour. This repair takes a shop approximately 1.5-2.5 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.