2015 Ford F-150 Serpentine Belt

Quick Answer

• Belt Length and Rib Count: 99.0 inches (2515 mm) | 6-rib
• OEM Belt Part Number: Ford FL3Z-8620-A
• Aftermarket Cross-References:
  • Gates: K060990
  • Dayco: 5060990
  • Continental: 4060990
• Auto-Tensioner Part Number: Ford FL3Z-6B209-C
• Idler Pulley Part Number: Ford YS-360

Note: The information above is for the 2015 Ford F-150 equipped with the 5.0L V8 engine. Other engine options may use different parts. Always verify the part numbers for your specific vehicle before purchasing.

Belt Routing

Before you remove the old serpentine belt, it is highly recommended that you take a clear photograph of the belt's routing. This will provide a visual reference to ensure you install the new belt correctly.

The belt routing for the 2015 Ford F-150 with the 5.0L V8 engine is as follows:

1. Starting from the crankshaft pulley at the bottom of the engine.
2. The belt wraps around the crankshaft pulley.
3. Goes up to the A/C compressor.
4. Then goes around the idler pulley.
5. Next, it goes over the alternator.
6. Down and around the power steering pump pulley.
7. Then up and over the water pump pulley.
8. Finally, it goes around the tensioner pulley before returning to the crankshaft pulley.

How to Replace the Serpentine Belt

To replace the serpentine belt, you will need a serpentine belt tool or a 3/8" breaker bar. Insert the tool or breaker bar into the designated square hole on the belt tensioner assembly. Rotate the tensioner to release the tension on the belt, and then slip the belt off of one of the pulleys. Carefully release the tensioner.

After removing the old belt, use your photograph and the routing description above to install the new belt. Once the new belt is in place, re-apply pressure to the tensioner and slide the belt onto the final pulley. Slowly release the tensioner to apply pressure to the new belt. Double-check that the belt is correctly seated in all of the pulley grooves.

Replacement Interval

It is recommended to inspect the serpentine belt at every oil change and replace it every 60,000 to 100,000 miles, or as recommended in your owner's manual. However, the belt may need to be replaced sooner if it shows signs of wear.

Signs of a Failing Belt or Tensioner

• Squealing or Chirping Noises: This is often the first sign of a worn belt or a failing tensioner.
• Visible Wear: Look for cracks, fraying, or glazing on the belt.
• Loss of Power Accessories: A failing belt can cause the A/C, power steering, or alternator to stop working.
• Engine Overheating: If the belt slips or breaks, the water pump will stop turning, which can cause the engine to overheat.
• Tensioner Pulley Misalignment: A worn tensioner pulley may not spin freely or may wobble.

If you are experiencing any of these issues, it is important to have your serpentine belt and tensioner inspected by a qualified technician as soon as possible.

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