The Alliant Power AP0023 is a new valve cover gasket for 2003–2007 Ford 6.0L Powerstroke applications. Alliant’s Engine Valve Cover Gasket seals the valve cover to the cylinder head to help prevent oil leaks and keep contaminants out of the valvetrain area.

Features & Benefits

• New Alliant Power Valve Cover Gasket (Alliant P/N AP0023)
• Fit, form, and function tested to meet or exceed original-equipment standards (per Alliant Power)
• Direct replacement for 3C34-6584-AA / 3C3Z-6584-BA / 3C3Z6584
• 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 (2003–2007)
• Ford Excursion (2003–2005)
• Ford F-650 / F-750 (2004–2008)
• Ford E-350 Super Duty / E-450 Super Duty (2004–2010)
• Ford E-350 Club Wagon (2004–2005)
• International 4300 / 4400 (2003)
• International 3200 / 4200 / 4200LP (2003–2007)
• International 1652SC (2004–2007)
• 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: 3C34-6584-AA, 3C3Z6584, 3C3Z-6584-BA
• Navistar: 1838250, 1838250C1
• Alliant Power: AP0023

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