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Thumbnail Filmstrip of 2008-2010 6.4L Powerstroke Accessory Belt Tensioner Alliant AP63517 Images
The Alliant Power AP63517 is a new accessory belt tensioner for 2008–2010 Ford 6.4L 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 Accessory Belt Tensioner (Alliant P/N AP63517)
- Fit, form, and function tested to meet or exceed original-equipment standards (per Alliant Power)
- Direct replacement for 7C3Z-6B209-B / 7C3Z6B209 / BT91
- Backed by Alliant Power’s 24-month, unlimited-mileage warranty
Application
- Ford F-250 Super Duty / F-350 Super Duty / F-450 Super Duty / F-550 Super Duty (2008–2010)
Always verify fitment against your VIN, engine, and OE part number before ordering.
Cross-Reference / Replaces
- Ford: 7C3Z6B209, 7C3Z-6B209-B
- Motorcraft: BT91
- Alliant Power: AP63517
Warranty: Alliant Power’s standard warranty: 24 months with unlimited miles/hours on installed parts (Alliant Power warranty policy, rev. Aug 2025).
The Alliant Power AP63517 is a new accessory belt tensioner for 2008–2010 Ford 6.4L 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 Accessory Belt Tensioner (Alliant P/N AP63517)
Fit, form, and function tested to meet or exceed original-equipment standards (per Alliant Power)
Direct replacement for 7C3Z-6B209-B / 7C3Z6B209 / BT91
Backed by Alliant Power’s 24-month, unlimited-mileage warranty
Application
Ford F-250 Super Duty / F-350 Super Duty / F-450 Super Duty / F-550 Super Duty (2008–2010)
Always verify fitment against your VIN, engine, and OE part number before ordering.
Cross-Reference / Replaces
Ford: 7C3Z6B209, 7C3Z-6B209-B
Motorcraft: BT91
Alliant Power: AP63517
Warranty: Alliant Power’s standard warranty: 24 months with unlimited miles/hours on installed parts (Alliant Power warranty policy, rev. Aug 2025).[...]
The Alliant Power AP63517 is a new accessory belt tensioner for 2008–2010 Ford 6.4L 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 Accessory Belt Tensioner (Alliant P/N AP63517)
- Fit, form, and function tested to meet or exceed original-equipment standards (per Alliant Power)
- Direct replacement for 7C3Z-6B209-B / 7C3Z6B209 / BT91
- Backed by Alliant Power’s 24-month, unlimited-mileage warranty
Application
- Ford F-250 Super Duty / F-350 Super Duty / F-450 Super Duty / F-550 Super Duty (2008–2010)
Always verify fitment against your VIN, engine, and OE part number before ordering.
Cross-Reference / Replaces
- Ford: 7C3Z6B209, 7C3Z-6B209-B
- Motorcraft: BT91
- Alliant Power: AP63517
Warranty: Alliant Power’s standard warranty: 24 months with unlimited miles/hours on installed parts (Alliant Power warranty policy, rev. Aug 2025).
Fits: 6.4 Powerstroke 2008-2010
Fits: 6.0|6.4 Powerstroke 2003-2010