🔧 F-150 - Radiator Hose Replacement

Your A/C-heater coolant hoses (radiator hoses) carry hot coolant between the radiator and engine. Replacing a cracked, swollen, or leaking hose prevents overheating and engine damage.

Difficulty Level: Intermediate | Estimated Time: 1.0-2.5 hours

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⚠️ Safety & Precautions

• ⚠️ Never open the coolant cap on a hot engine—hot coolant can spray and burn.
• ⚠️ Support your F-150 with jack stands before going underneath; never rely on a jack alone.
• ⚠️ Keep coolant off belts and electrical connectors; wipe spills immediately.
• ⚠️ Coolant is toxic—catch it in a drain pan and keep it away from pets/kids.
• 🔋 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 3-gallon)
• Funnel
• Hose clamp pliers
• Slip-joint pliers
• Pick tool (small hook pick)
• Flathead screwdriver
• 8mm nut driver
• 7mm socket
• 8mm socket
• 1/4" ratchet
• 1/4" extension (3"-6")
• Trim clip removal tool
• Shop rags
• Flashlight

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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: 2-4
• Engine coolant (Motorcraft Premium Gold equivalent) - Qty: 1-2 gallons (top-off/refill as needed)
• Distilled water - Qty: 1-2 gallons (if mixing concentrate)

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📋 Before You Begin

• Park on level ground, set the parking brake, and chock the rear wheels.
• Let the engine cool fully (at least 2-3 hours).
• Set the HVAC to HOT later during bleeding; it helps purge air.
• Locate the degas bottle (coolant reservoir); it’s the pressurized plastic tank you fill instead of the radiator cap.

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🔨 Step-by-Step Instructions

Follow these steps in order:

Step 1: Depressurize the cooling system (cold engine only)

• Use safety glasses and nitrile gloves.
• Slowly loosen the coolant cap on the degas bottle by hand to release any leftover pressure.
• Remove the cap completely and set it aside.

Step 2: Drain enough coolant to get below the hose level

• Place a drain pan (at least 3-gallon) under the radiator area.
• If you can access the radiator drain (petcock), open it using a flathead screwdriver and drain 1-2 gallons.
• If the drain is hard to reach, you can drain by loosening the lower radiator hose clamp (Step 5) and catching coolant.
• Tip: Drain only what you need.

Step 3: Remove the upper radiator hose (top side)

• Locate the upper radiator hose (radiator top outlet to thermostat housing).
• Release the clamps:
  • Spring clamp: squeeze and slide it back using hose clamp pliers.
  • Worm-gear clamp: loosen using an 8mm nut driver.
• Break the hose free without damaging the fitting:
  • Twist the hose by hand; if stuck, use slip-joint pliers to gently rotate.
  • If it’s still stuck, carefully slide a pick tool (small hook pick) under the hose end to let air in.
• Pull the hose off and aim it into the drain pan to catch any coolant.

Step 4: Install the upper radiator hose

• Compare the new hose to the old one (length, bends, end shapes).
• Slide the clamps onto the new hose before installing.
• Push the hose fully onto both fittings until it bottoms out.
• Position the clamps:
  • Spring clamps: use hose clamp pliers and place the clamp behind the raised bead on the fitting.
  • Worm clamps: tighten with an 8mm nut driver until snug (do not crush the hose).
• Wipe spilled coolant using shop rags.

Step 5: Raise the front (for lower radiator hose access)

• Chock wheels using wheel chocks.
• Lift the front with a floor jack (rated 3-ton minimum).
• Support the truck with jack stands (rated 3-ton minimum) under the frame rails.

Step 6: Remove the lower splash shield (if equipped)

• Use a flashlight to find the fasteners.
• Remove small bolts with a 7mm socket or 8mm socket and a 1/4" ratchet.
• Remove push-clips with a trim clip removal tool.
• Set the shield and hardware aside in a safe spot.

Step 7: Remove the lower radiator hose (bottom side)

• Position the drain pan under the hose connection.
• Release the clamp using hose clamp pliers (spring clamp) or loosen with an 8mm nut driver (worm clamp).
• Twist and pull the hose off the radiator outlet, then off the water pump/front cover connection.
• Let coolant drain into the pan until it slows.

Step 8: Install the lower radiator hose

• Slide new clamps onto the new hose.
• Push the hose fully onto both fittings.
• Reposition and secure clamps using hose clamp pliers or an 8mm nut driver.
• Make sure the hose isn’t rubbing on the fan shroud, belt path, or steering/suspension parts.

Step 9: Reinstall the splash shield and lower the truck

• Reinstall the shield using a 7mm socket / 8mm socket, 1/4" ratchet, and trim clip removal tool.
• Raise slightly with the floor jack, remove jack stands, and lower the truck.

Step 10: Refill coolant and bleed air

• Refill through the degas bottle using a funnel with Engine coolant (Motorcraft Premium Gold equivalent).
• Start the engine and let it idle with the cap off.
• Set the HVAC to max heat and medium fan.
• As the engine warms up, add coolant as the level drops. Use shop rags to clean any spills.
• When you feel steady heat from the vents and the level stabilizes, install the cap hand-tight.
• Tip: Watch the temperature gauge closely.

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✅ After Repair

• With the engine running, inspect both hose ends for seepage using a flashlight.
• Take a 10-15 minute test drive, then recheck for leaks.
• After the engine cools completely, recheck the degas bottle level and top off if needed.
• Dispose of old coolant properly (sealed container; do not pour onto the ground).

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💰 DIY vs Shop Cost

Shop Cost: $250-$600 (parts + labor)

DIY Cost: $60-$180 (parts only)

You Save: $190-$420 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?

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