🔧 Serpentine Belt - Replacement

The serpentine belt drives key accessories like the alternator, power steering, and A/C compressor. On your Ram, replacement is straightforward, but belt routing must be set exactly right so the belt tracks properly and doesn’t get damaged.

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

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⚠️ Safety & Precautions

• Engine must be completely off and cool before starting.
• Keep fingers, clothing, and tools away from the belt path and pulleys.
• Battery disconnect is not required, but remove the key and keep the vehicle off.
• The belt tensioner is spring-loaded; control it slowly to avoid injury.
• Take a photo of the belt routing first.

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🔧 Required Tools

You'll need the following tools for this repair:

• 1/2-inch drive ratchet
• 15mm socket
• Breaker bar
• Serpentine belt tool (specialty)
• Flashlight
• Safety glasses
• Mechanic gloves
• Wheel chocks

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🔩 Required Parts

HowToo sells all the parts you need for this repair:

• Serpentine belt - Qty: 1

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📋 Before You Begin

• Park on level ground and set the parking brake.
• Let the engine cool fully.
• Open the hood and locate the belt routing diagram under the hood or near the radiator support.
• Confirm you have the correct replacement belt before removing the old one.

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🔨 Step-by-Step Instructions

Follow these steps in order:

Step 1: Locate the belt routing

• Use a flashlight to find the belt routing diagram under the hood.
• If no diagram is present, take a clear photo of the existing belt before removal.
• Routing must match exactly.

Step 2: Release belt tension

• Use a 15mm socket and 1/2-inch drive ratchet or a serpentine belt tool (specialty) on the tensioner.
• Rotate the tensioner to unload the belt.
• Slowly control the tensioner so it does not snap back.

Step 3: Remove the old belt

• Slip the belt off one accessible pulley while the tensioner is held back.
• Release the tensioner gently.
• Remove the belt from all pulleys and pull it out of the engine bay.

Step 4: Inspect pulleys and tensioner

• Use a flashlight to check each pulley for cracks, wobble, noise, or rough movement.
• Spin the idler pulleys by hand if accessible. They should turn smoothly and quietly.
• If the tensioner feels weak or bouncy, replace it before installing the new belt.

Step 5: Install the new belt

• Route the new belt around all pulleys except one easy-to-reach pulley.
• Use the 15mm socket and 1/2-inch drive ratchet or serpentine belt tool (specialty) to release the tensioner again.
• Slip the belt onto the last pulley.
• Make sure every rib sits fully in every pulley groove.
• Double-check every pulley twice.

Step 6: Verify belt seating

• Rotate the engine by hand only if needed and only with proper tools and caution.
• Inspect the belt on every pulley edge to confirm it is centered and not twisted.
• Check that the belt follows the exact routing path from the diagram.

Step 7: Start and inspect

• Start the engine and watch the belt for a few seconds.
• Listen for squeal, chirping, or slapping noises.
• Shut the engine off and recheck belt tracking if anything looks off.

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✅ After Repair

• Verify the alternator, A/C, and steering operate normally.
• Recheck belt alignment after a short test drive.
• If you hear noise or see wobble, stop driving and recheck the routing and pulleys.

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💰 DIY vs Shop Cost

Shop Cost: $180-$350 (parts + labor)

DIY Cost: $40-$90 (parts only)

You Save: $140-$260 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?

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