The Alliant Power AP63448 is a new belt tensioner for 2003–2007 Ford 6.0L Powerstroke applications. Alliant’s Accessory Drive Belt Tensioner maintains proper tension on the accessory drive belt to support belt-driven component operation.

Features & Benefits

• New Alliant Power Belt Tensioner (Alliant P/N AP63448)
• Fit, form, and function tested to meet or exceed original-equipment standards (per Alliant Power)
• Direct replacement for 3C2E-6B209-AC / 3C2Z6B209AA / 3C2Z6B209CA
• Backed by Alliant Power’s 24-month, unlimited-mileage warranty

Application

• Ford F-250 Super Duty / F-350 Super Duty (2003–2007)
• Ford Excursion (2003–2005)
• Ford E-350 Club Wagon (2004–2005)
• Ford E-350 Super Duty (2004–2010)

Always verify fitment against your VIN, engine, and OE part number before ordering.

Cross-Reference / Replaces

• Ford: 3C2Z6B209AA, 3C2Z6B209CA, 3C2Z6B209A, 3C2E6B209DA, 3C2E-6B209-AC, 3C2E6B209AB
• Motorcraft: BT73, BT70
• Navistar: 1844538C1, 1844538
• Alliant Power: AP63448

Warranty: Alliant Power’s standard warranty: 24 months with unlimited miles/hours on installed parts (Alliant Power warranty policy, rev. Aug 2025).