🔧 F-150 - Radiator Hose Replacement

Replacing a radiator hose fixes coolant leaks and prevents overheating. On your F-150, you’ll typically replace either the upper hose (radiator to thermostat housing) or the lower hose (radiator to water pump area).

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

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⚠️ Safety & Precautions

• ⚠️ Never open the coolant cap on a hot engine; hot coolant can spray and burn.
• ⚠️ Support the truck with jack stands if you lift it—never rely on a jack.
• ⚠️ Keep coolant off belts and electrical connectors, and clean spills right away (coolant is toxic).
• ⚠️ Dispose of old coolant properly—do not pour on the ground.

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🔧 Required Tools

You'll need the following tools for this repair:

• Safety glasses
• Nitrile gloves
• Drain pan (at least 10-quart)
• Floor jack (rated 3-ton minimum)
• Jack stands (rated 3-ton minimum)
• Wheel chocks
• Flat-blade screwdriver
• 8mm socket
• 1/4" drive ratchet
• Pliers
• Hose clamp pliers (specialty)
• Pick tool (specialty)
• Razor blade scraper
• Shop towels
• Funnel
• 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
• Hose clamps - Qty: 2
• Engine coolant (Motorcraft Premium Gold equivalent) - Qty: 1-2 gallons
• Distilled water - Qty: 1-2 gallons

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📋 Before You Begin

• Park on level ground, set the parking brake, and chock the wheels.
• Let the engine cool completely (best: leave it off for 2+ hours).
• Set the HVAC to full heat later during bleeding (this helps purge air).
• Hose clamp pliers are pliers made to squeeze spring-style clamps safely.
• Pick tool is a small hook used to break a hose free without damaging fittings.

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🔨 Step-by-Step Instructions

Follow these steps in order:

Step 1: Relieve pressure (cold engine only)

• Use shop towels and slowly loosen the coolant reservoir cap by hand to make sure there’s no leftover pressure.
• If you hear hissing, stop and wait until it fully releases.

Step 2: Raise the front (only if you’re doing the lower hose)

• Use a floor jack (rated 3-ton minimum) to lift the front enough to work safely.
• Set the frame onto jack stands (rated 3-ton minimum) and re-check stability.

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

• Place a drain pan (at least 10-quart) under the radiator.
• Use pliers or a flat-blade screwdriver (varies by drain design) to open the radiator drain and drain 1-2 gallons, or until the radiator level is below the hose you’re replacing.
• Close the drain securely when done.

Step 4: Remove intake ducting (if it blocks access to the upper hose)

• Use an 8mm socket with a 1/4" drive ratchet to loosen the air intake clamps as needed.
• Move the duct aside enough to clearly see the hose ends and clamps.

Step 5: Remove the old hose clamps

• If you have spring clamps, use hose clamp pliers (specialty) to squeeze the clamp and slide it back on the hose.
• If you have worm-gear clamps, use a flat-blade screwdriver to loosen them and slide them back.

Step 6: Break the hose loose (don’t yank)

• Twist the hose by hand first to break the seal.
• If it’s stuck, carefully slide a pick tool (specialty) under the hose end to let a little air in, then twist again.
• Pull the hose off and aim it into the drain pan—more coolant will spill.
• Tip: Twist first, then pull straight.

Step 7: Clean the hose sealing surfaces

• Use shop towels to wipe the radiator neck and engine fitting clean.
• If there’s stuck rubber, use a razor blade scraper gently to remove residue (do not gouge the metal/plastic).

Step 8: Install the new hose and clamps

• Slide the new clamps onto the new hose first (use pliers or hose clamp pliers (specialty) depending on clamp type).
• Push the hose fully onto each fitting until it bottoms out.
• Position clamps behind the raised “bead” on the fitting, then release/tighten the clamps using hose clamp pliers (specialty) or a flat-blade screwdriver.

Step 9: Reinstall anything removed

• Reinstall the intake ducting and tighten the clamps using an 8mm socket and 1/4" drive ratchet.
• Remove tools from the engine bay.

Step 10: Refill coolant

• Use a funnel and refill the reservoir/radiator with a 50/50 mix of Motorcraft Premium Gold equivalent coolant and distilled water (unless you bought premix).
• Add coolant until the level is at the “MAX” line (or appropriate full mark).

Step 11: Bleed air and check for leaks

• Start the engine and let it idle with the cap off at first (watch the level).
• Turn the heater to full hot and fan to medium.
• Use a flashlight to inspect both hose ends for seepage as it warms up.
• Once the thermostat opens (upper hose gets hot), top off as needed, then reinstall the cap.
• Let it reach normal operating temp and verify the heater blows hot.

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✅ After Repair

• Recheck the coolant level after the first drive and again the next morning (cold engine); top off if needed.
• Look under the truck for drips and inspect the hose ends for dried coolant residue.
• If it ever runs hot or the heater stops blowing hot, shut it down and re-bleed/check coolant level.

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💰 DIY vs Shop Cost

Shop Cost: $250-$450 (parts + labor)

DIY Cost: $40-$120 (parts only)

You Save: $130-$410 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.