Engineered specifically for 2003 through 2007 Ford F-250, F-350, F-450, F-550 Super Duty and Excursion models equipped with the 6.0L Powerstroke diesel engine, the genuine Motorcraft Air Filter Restriction Indicator Assembly (FA-1784 / 5C3Z-9N622-A) provides accurate real-time monitoring of intake tract vacuum levels. Often referred to as the factory "filter minder," this mechanical vacuum gauge locks progressively as air filter restriction climbs, allowing you to gauge filter life without unnecessary disassemblies.

Over years of severe engine bay heat cycles and vibration, original plastic indicators become brittle, discolored, or lose their internal diaphragm seal. A cracked or leaking indicator causes unmetered, unfiltered "dirty" air to enter past the factory Donaldson air filter element directly into the turbocharger compressor wheel. Installing this authentic Motorcraft OE replacement restores factory airtight integrity and reliable restriction readings.

Key Features & Benefits

• 100% Genuine Ford Motorcraft Hardware: Built to rigorous original equipment specifications for dependable vacuum accuracy and sealing.
• Accurate Restriction Tracking: Progressive mechanical lock graduated with clear markings indicates exactly when the air filter requires cleaning or replacement.
• Protects Turbocharger Wheel: Eliminates unmetered dust and dirt bypass caused by cracked, cloudy, or dry-rotted original indicators.
• Integrated Push-Button Reset: Allows simple, zero-tool resetting of the indicator needle following filter maintenance or replacement.
• Direct Drop-In Replacement: Fits directly into the OEM air intake duct or factory air cleaner housing using the factory sealing grommet.

Technical Specifications

• Manufacturer Part Number / SKU: FA-1784 / FA1784
• Ford OEM Part Number: 5C3Z-9N622-A / 5C3Z9N622A
• Truck Platform: 2003–2007 Ford Super Duty F-250, F-350, F-450, F-550 & Ford Excursion
• Engine Platform: 6.0L 32-Valve Powerstroke V8 Diesel / Navistar VT365
• Component Type: Intake Air Filter Vacuum Restriction Gauge / Filter Minder
• Core Requirement: None (Brand New Genuine Part - No Core Return Required)
• Warranty: Ford Motor Company 2-Year Factory Parts Warranty

Vehicle Fitment & Installation Notes

• 2003–2007 Ford F-250 / F-350 / F-450 / F-550 Super Duty – 6.0L Powerstroke Diesel
• 2003–2005 Ford Excursion – 6.0L Powerstroke Diesel
• Fits Model Years: 2003, 2004, 2005, 2006, 2007 (Compatible with both early round-cooler and late square-cooler build dates)
• Fitment Notice: Direct replacement for factory air intake ducting on stock Donaldson PowerCore air filter housings and select aftermarket kits retaining the factory restriction port. Also fits late 2002–2003 7.3L Powerstroke applications using this indicator style.
• Installation Tip: Inspect the rubber mounting grommet in the intake duct before insertion; if hard or cracked, replace the grommet to prevent vacuum leaks. Firmly press the indicator stem into the grommet until fully seated.