🔧 Radiator Hose - Hose Replacement

Replace the leaking or swollen radiator hose and refill the cooling system with the correct coolant. On your RAV4, this is a straightforward repair, but you must bleed air from the system afterward so the engine does not overheat.

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

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⚠️ Safety & Precautions

• Let the engine cool completely before opening the cooling system. Hot coolant can cause severe burns.
• Keep hands, tools, and clothing away from the radiator fan area.
• Use only the correct Toyota-approved coolant type for your RAV4.
• Have a drain pan ready. Coolant is toxic to people and pets.
• If the hose sits near the alternator or serpentine belt, keep tools clear of those parts.

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🔧 Required Tools

You'll need the following tools for this repair:

• Safety glasses
• Nitrile gloves
• Drain pan
• Flat-blade screwdriver
• Hose clamp pliers (specialty)
• Pick tool
• Socket set with 10mm socket
• Ratchet
• Extension
• Funnel
• Shop towels
• Jack stands
• Floor jack (rated 3-ton minimum)

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🔩 Required Parts

HowToo sells all the parts you need for this repair:

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

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📋 Before You Begin

• Park on level ground and set the parking brake.
• Let the engine cool fully before starting.
• Lift the front of the vehicle only if you need extra access. Use jack stands if lifted.
• Open the radiator cap only when the engine is cold.
• Take a photo before removing the hose.

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🔨 Step-by-Step Instructions

Follow these steps in order:

Step 1: Drain enough coolant

• Place the drain pan under the radiator drain area.
• Use your hands or a flat-blade screwdriver to open the radiator drain cock if equipped.
• Drain coolant until the level is below the hose you are replacing.
• Close the drain cock when finished.

Step 2: Remove the hose clamps

• Use hose clamp pliers to compress the spring clamps and slide them back on the hose.
• If your RAV4 has screw-type clamps, use a flat-blade screwdriver or the correct socket.
• Work the clamp back before pulling the hose.

Step 3: Remove the old hose

• Twist the hose gently to break it loose from the radiator neck and engine pipe.
• Use a pick tool only if the hose is stuck. Do not damage the metal or plastic fittings.
• Pull the hose off and remove it from the vehicle.

Step 4: Clean the fittings

• Use shop towels to clean the radiator neck and engine pipe.
• Remove any rust, rubber residue, or coolant film so the new hose seals well.

Step 5: Install the new hose

• Slide the new hose clamps onto the new hose first.
• Push the hose fully onto both fittings until it seats all the way against the stop.
• Position the clamps in the same spots as the original hose.
• Use hose clamp pliers to release spring clamps into place, or tighten screw clamps with the proper tool.

Step 6: Refill the cooling system

• Use a funnel to fill the radiator with Toyota Super Long Life Coolant.
• Fill the overflow reservoir to the correct mark.
• Leave the radiator cap off for the bleed procedure.

Step 7: Bleed air from the system

• Start the engine and let it idle with the heater set to full hot.
• Watch the coolant level and add more as air escapes.
• Once the upper hose gets warm and the coolant level stabilizes, install the radiator cap.
• Torque to hand-tight only for the radiator cap.

Step 8: Recheck for leaks

• Inspect both ends of the new hose for seepage.
• Look under the vehicle and around the radiator for dripping coolant.
• Top off the reservoir if needed after the engine cools down.

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✅ After Repair

• Drive the RAV4 and watch the temperature gauge.
• Recheck coolant level the next day when the engine is cold.
• Inspect the hose clamps again for leaks after one full heat cycle.
• If the engine overheats or the heater blows cold, there is still air in the system.

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💰 DIY vs Shop Cost

Shop Cost: $180-$420 (parts + labor)

DIY Cost: $35-$110 (parts only)

You Save: $145-$310 by doing it yourself!

Shop labor rates vary but typically run $100-$150/hour. This repair takes a shop approximately 1-2 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.