The Alliant Power AP63403 is a new exhaust back pressure sensor for 1997–2003 Ford 7.3L and 2003–2004 Ford 6.0L Powerstroke applications. Alliant’s Exhaust Backpressure Sensor monitors exhaust backpressure to provide feedback for engine and emissions-system operation.

Features & Benefits

• New Alliant Power Exhaust Back Pressure Sensor (Alliant P/N AP63403)
• Fit, form, and function tested to meet or exceed original-equipment standards (per Alliant Power)
• Direct replacement for 3C3Z-9J460-AA / 4C3Z-9J460-B / 4C3Z9J460
• Backed by Alliant Power’s 24-month, unlimited-mileage warranty

Application

• Ford 6.0L Powerstroke F-Series and Excursion (2003–2004, ESN 6,000,000 to 6,344,942)
• Ford 6.0L Powerstroke E-Series (2004, ESN 0 to 149,760)
• Ford F-350 / F-250 HD (1997)
• Ford E-350 Super Duty / F-250 Super Duty / F-350 Super Duty / F-450 Super Duty / F-550 Super Duty (1999–2004)
• Ford E-350 Econoline (1997–1998)
• Ford E-350 Econoline Club Wagon (1997–2002)
• Ford F-550 Super Duty (1999–2007)
• Ford E-450 Econoline Super Duty (1999–2002)
• Ford F-650 / F-750 (2000–2008)
• Ford Excursion (2000–2004)
• Alliant Power lists additional vehicle applications for this part number

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

Cross-Reference / Replaces

• Ford: 3C3Z-9J460-AA, 4C3Z9J460, 4C3Z9J460A, 4C3Z-9J460-B, 4X3Z9J460
• Motorcraft: DPFE-145, DPFE3
• Navistar: 1850353, 1850353C1
• Hella: 009409531
• Alliant Power: AP63403

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