For the 2008 Ford Fusion, accurate serpentine belt routing is crucial for accessory function like alternator, power steering, and AC. This focuses on the common 2.3L I4 engine configuration; verify against your VIN or engine bay decal for variants.
Standard Belt Routing Path
The serpentine belt typically routes clockwise when facing the engine front. Follow this sequence:
- Crankshaft pulley (base drive point)
- Tensioner pulley (handles belt slack adjustment)
- Alternator pulley (upper right section)
- Power steering pump pulley (left side)
- Air conditioning compressor pulley (lower section)
- Back to crankshaft pulley to complete the loop
Professional Installation Tips
Always release tension via the automatic tensioner before removal or routing. Use a belt diagram sticker in the engine compartment for visual confirmation; if missing, refer to factory manuals. Ensure pulleys are clean and aligned to prevent slippage or premature wear.

For optimal performance, replace both belt and tensioner if worn or squeaking—common at 60,000-100,000 miles in this model.