🔧 Water Pump - Replacement

The water pump on your Ram is driven by the accessory belt and mounted on the front of the engine. Replacing it means draining coolant, removing the belt and front accessories as needed, swapping the pump and gasket, then refilling and bleeding the cooling system so the engine does not overheat.

Difficulty Level: Intermediate | Estimated Time: 3-5 hours

---

⚠️ Safety & Precautions

• Let the engine cool fully before opening the cooling system. Hot coolant can cause severe burns.
• Use jack stands if you raise the truck. Never rely on a jack alone.
• Disconnect the negative battery cable before removing the belt or working near the radiator fan. A fan can start unexpectedly.
• Keep coolant off the accessory belt and pulleys. Coolant contamination can damage the belt.
• Use the correct OAT coolant type for this engine. Mixing coolant types can damage seals and shorten cooling system life.

---

🔧 Required Tools

You'll need the following tools for this repair:

• Metric socket set
• 3/8-inch ratchet
• Extensions
• Torque wrench
• Serpentine belt tool
• Drain pan
• Funnel
• Plastic scraper
• Hose clamp pliers
• Pliers
• Pick tool
• Floor jack (rated 3-ton minimum)
• Jack stands
• Wheel chocks
• Safety glasses
• Mechanic gloves

---

🔩 Required Parts

HowToo sells all the parts you need for this repair:

• Water pump - Qty: 1
• Water pump gasket or seal - Qty: 1
• Engine coolant (OAT, 50/50 premix) - Qty: 2-3 gallons
• Thermostat gasket - Qty: 1
• Serpentine belt - Qty: 1
• Water pump bolts - Qty: 1 set if replacing

---

📋 Before You Begin

• Park on level ground and set the parking brake.
• Let the engine cool completely.
• Disconnect the negative battery cable.
• Raise the front of the truck only if you need more access, then support it with jack stands.
• Have a drain pan ready before opening the cooling system.

---

🔨 Step-by-Step Instructions

Follow these steps in order:

Step 1: Drain the coolant

• Place a drain pan under the radiator drain area.
• Open the radiator drain or lower hose using pliers or hose clamp pliers, depending on the clamp style.
• Drain enough coolant to get below the water pump level.
• Close the drain when finished.

Step 2: Remove the serpentine belt

• Use a serpentine belt tool to rotate the belt tensioner.
• Slide the belt off one pulley and remove it from the front of the engine.
• Inspect the belt for cracks or glazing. Replace it if needed.

Step 3: Remove any access components

• If needed, remove the cooling fan shroud or upper covers using the correct metric socket set.
• Set hardware aside in order so it goes back in the same spots.
• Take a quick photo first.

Step 4: Remove the water pump

• Use the metric socket set and extensions to remove the water pump bolts.
• Break the pump loose gently. Do not pry hard against the aluminum housing.
• Remove the pump and gasket from the engine.

Step 5: Clean the mounting surface

• Use a plastic scraper to remove old gasket material.
• Wipe the surface clean and dry.
• Do not scratch the aluminum sealing surface.

Step 6: Install the new water pump

• Install the new gasket or seal on the pump.
• Position the new pump on the engine.
• Start all bolts by hand using the metric socket set.
• Tighten the bolts evenly in a crisscross pattern.
• Torque to 13 Nm (115 in-lbs) unless your replacement pump includes a different bolt spec.

Step 7: Reinstall removed components and belt

• Reinstall the fan shroud or covers using the metric socket set.
• Route the serpentine belt over all pulleys following the belt path sticker.
• Use the serpentine belt tool to relieve tension and slip the belt into place.
• Make sure the belt sits fully in every pulley groove.

Step 8: Refill the cooling system

• Mix or use the correct engine coolant (OAT, 50/50 premix).
• Fill the radiator or reservoir slowly with a funnel.
• Fill to the proper mark.
• Leave the cap off for initial bleeding if the service procedure allows it.

Step 9: Bleed the air from the system

• Reconnect the battery.
• Start the engine and let it idle with the heater set to hot.
• Watch coolant level and top off as air escapes.
• Let the engine reach operating temperature.
• Check for a steady heat output from the vents.
• Air pockets cause overheating.

Step 10: Check for leaks and verify operation

• Inspect the water pump area, hose connections, and drain points for leaks.
• Shut the engine off and recheck coolant level after it cools.
• Top off the reservoir if needed.

---

✅ After Repair

• Drive the truck and monitor engine temperature.
• Recheck coolant level after the first full heat cycle.
• Inspect again the next day for any seepage around the pump.
• If the temperature rises above normal, stop driving and recheck for trapped air.

---

💰 DIY vs Shop Cost

Shop Cost: $750-$1,200 (parts + labor)

DIY Cost: $180-$350 (parts only)

You Save: $400-$850 by doing it yourself!

Shop labor rates vary but typically run $100-$150/hour. This repair takes a shop approximately 3-5 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.