2020 Ford F-150 Serpentine Belt Routing & Part Numbers

Quick Answer

For the 2020 Ford F-150, serpentine belt specifications can vary by engine. Always verify with your specific engine and trim level.

• Belt Length & Rib Count: Varies by engine. Most common F-150 engines use a 6-rib belt.
  • 2.7L EcoBoost, 3.5L EcoBoost, 3.3L Ti-VCT, 5.0L V8: Typically 6-rib. Exact length varies.
• OEM Belt Part Number: Varies by engine.
  • Example (verify for your engine): JL3Z-8620-E (for 3.5L EcoBoost) – always confirm with your VIN.
• Aftermarket Cross-References (Examples - always verify for your engine):
  • Gates: K06xxxx (e.g., K060930 for 3.5L EcoBoost)
  • Dayco: 506xxxx (e.g., 5060930 for 3.5L EcoBoost)
  • Continental Elite: 406xxxx (e.g., 4060930 for 3.5L EcoBoost)
• Auto-Tensioner Part Number: Varies by engine.
  • Example (verify for your engine): HL3Z-6B209-A (for 3.5L EcoBoost)
• Idler Pulley Part Number: Varies by engine.
  • Example (verify for your engine): HL3Z-8678-A (for 3.5L EcoBoost)

Belt Routing

Always take a photograph of your existing belt routing BEFORE removal. This is the best way to ensure correct reinstallation, as routing can be complex and slight variations exist even within the same model year.

The serpentine belt on your 2020 Ford F-150 drives several essential accessories. While the exact path can vary slightly between engine options (2.7L EcoBoost, 3.3L Ti-VCT, 3.5L EcoBoost, 5.0L V8, 3.0L Power Stroke Diesel), a typical routing for many F-150 engines involves:

1. Starting from the Crankshaft Pulley (the largest, lowest pulley).
2. The belt usually travels up from the crankshaft pulley to the A/C Compressor Pulley.
3. From the A/C compressor, it might go to an Idler Pulley (a smooth pulley that guides the belt).
4. Next, it wraps around the Alternator Pulley.
5. Then, it may proceed to the Power Steering Pump Pulley (if hydraulically assisted).
6. Following the power steering pump, it typically routes to the Water Pump Pulley.
7. Finally, the belt goes to the Automatic Tensioner Pulley, which maintains proper belt tension. The tensioner will have a square drive hole (often 3/8-inch or 1/2-inch) for a breaker bar or serpentine belt tool to release tension.

Remember, this is a general guide. Your specific engine might have a slightly different path or skip certain accessories if they are electrically driven (like some power steering pumps).

How to Replace the Serpentine Belt

Replacing the serpentine belt on your 2020 Ford F-150 is a manageable DIY job, but requires careful attention to detail.

Tools Needed:

• Serpentine belt tool (recommended for leverage) or a 3/8-inch or 1/2-inch square-drive breaker bar/ratchet.
• New serpentine belt.

Steps:

1. Safety First: Ensure the engine is off and cool. Disconnect the negative terminal of the battery for added safety.
2. Document Routing: As mentioned, take a clear photo of the current belt routing. This is crucial for correct installation.
3. Locate Tensioner: Identify the automatic tensioner pulley. It will have a square hole for your tool.
4. Release Tension: Insert your serpentine belt tool or breaker bar into the square hole on the tensioner. Slowly rotate the tool in the direction that releases tension on the belt (usually clockwise or counter-clockwise, depending on the tensioner