2021 Toyota Camry Serpentine Belt Guide

Quick Answer

• Belt Length: 1209mm (47.6 inches)
• Rib Count: 7
• OEM Belt Part Number: 90916-A2024
• Aftermarket Cross-References:
  • Gates: K070476
  • Continental: 4070475
  • Dayco: 5070475
• Auto-Tensioner Part Number: 16620-F0050
• Idler Pulley Part Number: 16604-F0010

Belt Routing

Before removing the old belt, we always recommend taking a clear photograph of the belt's path for reference. The serpentine belt on the 2021 Toyota Camry with the A25A-FKS 2.5L engine follows this specific path:

1. Starts at the crankshaft pulley at the bottom.
2. Wraps up and around the A/C compressor.
3. Goes under the idler pulley.
4. Loops up and over the alternator.
5. Comes down around the power steering pump.
6. Goes under the water pump.
7. Finishes by wrapping over the top of the auto-tensioner.

How to Replace the Serpentine Belt

Replacing the serpentine belt on this Camry is straightforward. You will need a serpentine belt tool or a long-handled 3/8" breaker bar. Locate the automatic tensioner—it has a pulley and is spring-loaded to keep the belt tight. You'll see a 14mm hex cast into the body of the tensioner. Fit your tool onto this hex and rotate it clockwise. This will swing the tensioner pulley away from the belt, releasing the tension. You can now easily slip the belt off the pulleys. When installing the new belt, route it around all the pulleys except for the tensioner. Once it's in place, rotate the tensioner again and slide the new belt over the tensioner pulley to finish the installation. Double-check that the belt is correctly seated in the grooves of each pulley.

Replacement Interval

Toyota recommends inspecting the serpentine belt during regular service intervals. While there is no strict mileage for replacement, it is generally a good idea to replace the belt every 60,000 to 100,000 miles, or sooner if you notice any signs of wear.

Signs of a Failing Belt or Tensioner

Be aware of these symptoms that indicate it's time for a replacement:

• Squealing Noises: A high-pitched squeal, especially on startup or when the A/C is turned on, is a classic sign of a worn or loose belt.
• Visible Wear: Look for cracks, fraying, glazing (a shiny, smooth appearance), or missing ribs on the belt.
• Chirping or Grinding: Noises from the engine bay could also point to a failing tensioner or idler pulley bearing.
• Accessory Malfunctions: Since the belt drives the alternator, power steering, and A/C, a failing belt can cause dimming lights, difficult steering, or poor air conditioning performance.

If you're not comfortable performing this service yourself, you can always find a trusted shop on Repairius.