🔧 2500 - Radiator Hose Replacement

Replacing a radiator hose on your 2500 means safely draining some coolant, removing the old hose and clamps, and installing the new hose without leaks. The key is doing it on a cold engine and refilling with the correct coolant so you don’t overheat.

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

---

⚠️ Safety & Precautions

• ⚠️ Only work on a fully cold engine; hot coolant can cause severe burns.
• ⚠️ Never open the coolant reservoir cap when hot or steaming.
• ⚠️ Support the truck with jack stands if you lift it; never rely on a jack.
• ⚠️ Keep coolant off paint and away from pets; it’s toxic and attractive.
• 🔋 Battery disconnect is not required for a radiator hose, but keep tools away from the fan and belts.

---

🔧 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)
• Hose clamp pliers (specialty)
• Channel-lock pliers
• Flat-blade screwdriver
• Pick tool (small hook) (specialty)
• Trim clip removal tool
• Work light
• Funnel
• Shop towels

---

🔩 Required Parts

HowToo sells all the parts you need for this repair:

• Upper radiator hose - Qty: 1
• Lower radiator hose - Qty: 1
• Radiator hose clamp set - Qty: 1
• Engine coolant (OAT, 10-year/150k type; compatible with Ram) - Qty: 2-4 gallons (mixed as required)
• Distilled water - Qty: 1-2 gallons (if mixing concentrate)

---

📋 Before You Begin

• Park on level ground, set the parking brake, and chock the rear wheels.
• Let the engine cool completely (overnight is best).
• Decide which hose you’re replacing: the upper hose runs to the top of the radiator; the lower hose runs to the bottom of the radiator.
• Look at your clamps: many 2500s use spring/constant-tension clamps (need clamp pliers). If yours has worm-gear clamps, you’ll use a flat-blade screwdriver.

---

🔨 Step-by-Step Instructions

Follow these steps in order:

Step 1: Relieve any residual pressure (cold engine only)

• Put on safety glasses and nitrile gloves.
• Slowly loosen the coolant reservoir cap by hand. If you hear pressure, stop and wait until fully cold.

Step 2: Raise the front (only if you need access underneath)

• Use a floor jack (rated 3-ton minimum) to lift the front at a safe jacking point.
• Set the truck onto jack stands (rated 3-ton minimum) and keep wheel chocks in place.

Step 3: Drain enough coolant to get the hose off cleanly

• Place a drain pan (at least 3-gallon) under the radiator lower area.
• If equipped with an access panel or splash shield, remove needed clips using a trim clip removal tool.
• Drain coolant from the radiator drain point if accessible; otherwise, you can drain by carefully cracking the lower hose loose at the radiator end.
• Only drain what you need to reduce mess.

Step 4: Remove the hose clamps

• If you have spring clamps, squeeze and slide them back using hose clamp pliers (specialty).
• If you have worm-gear clamps, loosen them using a flat-blade screwdriver.
• Move each clamp a few inches away from the hose end so it’s not gripping the fitting.

Step 5: Break the hose seal and remove the hose

• Twist the hose by hand near the end to break the seal. If it’s stubborn, gently work the edge with a pick tool (small hook) (specialty).
• Do not pry hard on the radiator neck; it can crack.
• Pull the hose off and aim it into the drain pan (at least 3-gallon).
• Use shop towels to wipe up spills.

Step 6: Prep the fittings and compare parts

• Wipe the radiator neck and engine-side fitting clean with shop towels.
• Compare old and new hose shape/length and end diameters before installing.
• If your new hose did not come with clamps, install new clamps from the radiator hose clamp set.

Step 7: Install the new hose

• Slide clamps onto the hose first.
• Push the hose fully onto each fitting until it seats against the stop/bead.
• Position clamps behind the raised bead on the fitting.
• Tighten worm-gear clamps using a flat-blade screwdriver until snug, or release spring clamps into position using hose clamp pliers (specialty).
• Snug is good—over-tightening can damage the hose.

Step 8: Refill coolant

• Use a funnel to refill the coolant reservoir with engine coolant (OAT, 10-year/150k type; compatible with Ram).
• If you bought concentrate, mix with distilled water to the proper ratio listed on the coolant bottle.
• Bring the level to the “FULL COLD” mark (engine cold).

Step 9: Bleed air by warm-up and top-off

• Start the engine and set the heater to max heat.
• Let it idle while watching for leaks at both hose ends using a work light.
• As the engine warms up, coolant level may drop; add coolant through the reservoir using a funnel as needed.
• Shut the engine off, let it cool fully, then re-check and adjust to “FULL COLD.”

---

✅ After Repair

• Check for leaks after a short test drive and again the next morning (cold).
• Verify cabin heat is strong; weak heat can mean trapped air.
• Monitor the temperature gauge closely for the next few drives.
• Dispose of old coolant properly (most parts stores accept it).

---

💰 DIY vs Shop Cost

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

DIY Cost: $50-$180 (parts only)

You Save: $200-$370 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.

---

🎯 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 so I can tailor this perfectly: Are you replacing the upper hose, the lower hose, or both on your 2500?