🔧 CR-V - Water Pump Replacement

You’ll be removing the drive belt, unbolting the water pump from the front of the engine, and installing a new pump with a fresh gasket, then refilling and bleeding the cooling system. On the 2.4L in your CR-V, the water pump is external and driven by the serpentine belt, so you don’t have to touch the timing chain.

Difficulty Level: Intermediate | Estimated Time: 3–4 hours (first time)

---

⚠️ Safety & Precautions

• ⚠️ Never open the radiator cap on a hot engine. Let the engine cool completely (at least 1–2 hours after driving).
• ⚠️ Coolant is toxic to people and animals. Avoid skin contact and clean spills immediately.
• ⚠️ Support the vehicle securely on jack stands if you raise it. Never work under a car supported only by a jack.
• ⚠️ Keep fingers, clothing, and tools away from the belt area. Make sure the engine cannot start while you are working (key out, start button off).
• ⚠️ Disconnect negative battery cable if you are worried about accidental starts or short circuits.

---

🔧 Required Tools

You'll need the following tools for this repair:

• Floor jack (rated 3-ton minimum)
• Jack stands (pair, rated 3-ton minimum)
• Wheel chocks
• Drain pan (8+ liter capacity)
• Ratchet 3/8-inch drive
• Ratchet 1/2-inch drive
• 10mm socket
• 12mm socket
• 14mm socket
• 17mm socket
• Short socket extension 3-inch (3/8-inch drive)
• Long socket extension 6-inch (3/8-inch drive)
• Torque wrench 3/8-inch drive (5–60 ft-lb range)
• Torque wrench 1/2-inch drive (20–150 ft-lb range)
• Serpentine belt tool or long 14mm box wrench (specialty)
• Phillips screwdriver #2
• Flathead screwdriver medium
• Needle-nose pliers
• Trim clip removal tool (specialty)
• Plastic scraper
• Small wire brush
• Funnel with long spout
• Coolant spill-free funnel kit (specialty)
• Shop rags
• Safety glasses
• Nitrile gloves

---

🔩 Required Parts

HowToo sells all the parts you need for this repair:

• Water pump (2.4L K24 engine, with gasket or O-ring) - Qty: 1
• Drive belt (serpentine belt) - Qty: 1
• Honda-type premixed coolant (blue, 50/50) - Qty: 2–3 gallons
• Water pump mounting bolts (optional replacement hardware kit) - Qty: 1 set
• Radiator drain plug washer (if separate from plug) - Qty: 1
• Hose clamp(s) for coolant hoses (if any are rusted or weak) - Qty: as needed
• RTV silicone sealant (coolant-safe, if specified with your pump) - Qty: 1 small tube
• Brake cleaner or parts cleaner spray - Qty: 1 can
• Distilled water - Qty: 1–2 gallons (for rinsing spills, not mixing if using premix)

---

📋 Before You Begin

• Park the CR-V on level ground, set the parking brake, and place wheel chocks behind the rear wheels.
• Allow the engine to cool completely so the radiator hose is cool to the touch.
• If you want extra safety, disconnect the negative battery cable using a 10mm socket.
• Gather all tools and parts before starting; once the coolant is drained you don’t want to stop halfway.

---

🔨 Step-by-Step Instructions

Follow these steps in order:

Step 1: Raise and secure the front of the vehicle

• Use the floor jack under the front center jacking point (behind the front bumper) to lift the front of the CR-V.
• Place jack stands under the factory pinch welds or frame points on both sides and lower the vehicle gently onto them using the floor jack.
• Leave the jack lightly touching the lift point as backup support, but not carrying the car’s weight.
• Always confirm vehicle is stable before working.

Step 2: Remove the engine under-cover / splash shield

• Position the drain pan under the radiator area.
• Use the Phillips screwdriver #2 to remove any screws securing the plastic engine under-cover.
• Use the trim clip removal tool or flathead screwdriver to gently pry out the plastic clips.
• Lower the under-cover and set it aside.

Step 3: Drain the coolant

• Place the drain pan under the radiator drain cock (bottom of radiator, usually on the passenger side).
• Use your hand or needle-nose pliers (if needed) to carefully open the plastic drain cock. Turn counterclockwise.
• Slowly open the radiator cap at the top using your hand to let air in so coolant drains faster.
• Allow coolant to drain completely, then close the drain cock finger tight for now. Final torque is 29 Nm (21 ft-lb) if it is a threaded metal plug; if plastic, just snug by hand and do not overtighten.

Step 4: Remove the serpentine (drive) belt

• From above, note the belt routing. If there is no label, take a clear photo.
• Locate the belt tensioner pulley. On the K24 engine, the tensioner is spring-loaded and has a 14mm bolt head on the arm.
• Use the serpentine belt tool or long 14mm box wrench to rotate the tensioner clockwise to relieve tension.
• While holding the tensioner, use your free hand to slip the belt off one of the top pulleys (usually the alternator).
• Slowly release the tensioner back to its rest position with the belt tool or 14mm wrench.
• Remove the belt fully and set it aside. If the belt is old or cracked, replace it with the new one.

Step 5: Access and remove the water pump pulley

• The water pump is located on the passenger side of the engine, front-facing, with a round pulley and three or four small bolts.
• Use a 12mm socket and 3/8-inch ratchet to remove the water pump pulley bolts.
• If the pulley wants to spin, you can hold it by hand with a glove or lightly wedge a flathead screwdriver between the bolt heads while loosening with the 12mm socket.
• Remove the pulley and set it aside.

Step 6: Remove components blocking pump access (if needed)

• On some CR-Vs, you may need a bit more access by loosening adjacent brackets.
• Use a 10mm socket and ratchet to remove any small brackets or covers that block direct access to the water pump bolts.
• Keep bolts organized so you know where they came from.
• Take phone photos before removing brackets.

Step 7: Remove the old water pump

• Place the drain pan under the water pump area to catch any remaining coolant.
• Use a 10mm socket with 3-inch extension and ratchet to remove the water pump mounting bolts (usually 5–7 bolts around the pump).
• Once all bolts are removed, gently tap the water pump with the plastic handle of the flathead screwdriver to break it loose. Do not pry hard against the aluminum engine.
• Pull the pump straight out. Some coolant will spill; let it drain into the pan.
• Remove and discard the old gasket or O-ring.

Step 8: Clean the sealing surface

• Use the plastic scraper to clean old gasket material from the engine block sealing surface. Avoid scratching the metal.
• Follow up with a small wire brush very gently if needed, but do not gouge the surface.
• Spray a little brake cleaner on a shop rag and wipe the surface clean and dry.
• Surface must be smooth, clean, and dry.

Step 9: Prepare and install the new water pump

• Compare the new pump to the old one to confirm bolt hole locations and shape match.
• Install the new gasket or O-ring onto the pump. If your pump instructions call for a thin layer of RTV silicone sealant, apply a tiny, even bead to the gasket side and let it skin for a few minutes before installing. Many Honda-style pumps use a dry gasket—follow the pump instructions.
• Position the new pump on the engine, lining up the bolt holes.
• Install all water pump bolts finger-tight using a 10mm socket and ratchet.
• Once all are finger-tight, torque each bolt in a crisscross pattern using a torque wrench (3/8-inch drive) with 10mm socket to 12 Nm (8.7 ft-lb).
• Do not overtighten; bolts are small.

Step 10: Reinstall the water pump pulley

• Place the pulley back onto the pump shaft, aligning bolt holes.
• Thread the pulley bolts in by hand.
• Use a 12mm socket and ratchet to snug them evenly.
• Hold the pulley by hand or with a glove and torque the bolts with a torque wrench and 12mm socket to 12 Nm (8.7 ft-lb).

Step 11: Reinstall brackets or covers removed

• Reinstall any brackets or covers you removed using the 10mm socket and ratchet.
• Tighten bolts snugly; typical small bracket torque is about 9–12 Nm (7–9 ft-lb) if you want to use a torque wrench.

Step 12: Install the new serpentine belt

• Route the new belt around the pulleys according to your photo or the under-hood diagram, leaving the easiest top pulley for last.
• Use the serpentine belt tool or long 14mm box wrench to rotate the tensioner clockwise again.
• Slip the belt over the final pulley, then slowly release the tensioner to apply tension.
• Check that the belt sits fully in the grooves on every pulley.

Step 13: Tighten the radiator drain and reinstall under-cover

• From underneath, make sure the radiator drain cock is closed. If it is a metal plug style, use a 17mm socket and 3/8-inch ratchet to tighten to 29 Nm (21 ft-lb). If plastic, snug by hand only.
• Reinstall the plastic under-cover using the Phillips screwdriver #2 and trim clip removal tool (to push clips back in).

Step 14: Refill the cooling system

• Lower the vehicle carefully using the floor jack and remove the jack stands.
• Open the radiator cap and expansion (overflow) tank cap.
• Install the coolant spill-free funnel kit on the radiator neck. This helps bleed air out.
• Pour Honda-type premixed coolant slowly into the funnel until the radiator is full and the funnel has some coolant in it.
• Fill the overflow tank to the “MAX” mark using the funnel.

Step 15: Bleed the cooling system (remove air)

• Start the engine with the funnel still installed and heater set to HOT and blower to LOW so coolant circulates through the heater core.
• Let the engine idle, occasionally gently revving to 1500–2000 RPM to help push out air.
• Watch for air bubbles coming up through the funnel. Keep adding coolant as the level drops so air does not get sucked back in.
• Once the engine reaches normal operating temperature and the radiator fan cycles on and off at least once, and bubbles stop appearing, you’re mostly bled.
• Turn off the engine and let it cool completely. Coolant in the funnel will drop; top off the radiator if needed and then remove the funnel, installing the radiator cap firmly.
• Make sure the overflow tank is between MIN and MAX; top off if necessary.

Step 16: Final checks for leaks and belt alignment

• With the engine running again, check around the water pump and hose connections for any leaks using a flashlight if you have one.
• Look at the belt while the engine runs (stand clear of moving parts). Make sure it tracks straight on all pulleys and does not wander.
• Shut the engine off and recheck coolant and oil (just to confirm no cross-contamination).

---

✅ After Repair

• On the first short drive, watch the temperature gauge. It should stay in the normal range once warmed up.
• After the engine cools from the first drive, recheck coolant level in the radiator (when cool) and overflow tank, and top off as needed using premixed coolant.
• Inspect under the front of the CR-V and around the water pump area for any fresh coolant drips.
• Over the next few days, monitor for any squealing belt noises or coolant smell; recheck belt routing and hose clamps if something seems off.

---

💰 DIY vs Shop Cost

Shop Cost: $450–$700 (parts + labor)

DIY Cost: $120–$220 (parts, coolant, sealant)

You Save: $330–$480 by doing it yourself!

Shop labor rates vary but typically run $100–$150/hour. This repair takes a shop approximately 2–3 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.