Engineered specifically for 2003 through 2007 Ford F-250, F-350, F-450, F-550 Super Duty and Excursion trucks equipped with the 6.0L Powerstroke diesel engine, the aFe Magnum FORCE Stage-2 Si Cold Air Intake System (54-81022-1) replaces restrictive factory airbox assemblies while keeping engine bay heat locked out. Unlike open-element systems, the Stage-2 Si (Sealed Intake) utilizes a heat-soak-resistant, one-piece polymer enclosure featuring a molded diamond tread plate top and an auxiliary air inlet with an optional urethane block-off plug.

At the heart of the system is a massive 9-inch tall conical Pro 5R air filter constructed with five layers of progressively finer oiled cotton gauze media and a 6.75" x 4.75" elliptical flange. Paired with a CAD-designed, dyno-tuned, roto-molded intake tube and an included MAF-to-Temperature sensor adapter, this system seamlessly fits all 2003–2007 6.0L models regardless of factory sensor configuration.

Key Features & Benefits

• Massive 5-Layer Pro 5R Oiled Filter: 9-inch tall inverted-top filter with five layers of progressively finer mesh cotton gauze media maximizes airflow and dust-holding capacity.
• Sealed One-Piece Stage-2 Si Housing: Blocks hot engine bay air to ensure a cool, dense intake charge, complete with a molded diamond-plate style lid and auxiliary air scoop plug.
• Superior Airflow Dynamics: Outflows the factory intake system by up to 40%, achieving a verified flow rating of 680 CFM @ 7" H2O.
• Dyno-Proven Performance: Delivers verified maximum gains of up to +16 horsepower and +26 lb-ft of torque while helping lower exhaust gas temperatures (EGTs).
• Universal Sensor Compatibility: Includes a specialized MAF-to-Temp sensor adapter so the intake tube fits both early and late 6.0L sensor setups without modification.

Technical Specifications

• Manufacturer Part Number / SKU: 54-81022-1 / AFE-54-81022-1
• Filter Media Type: Pro 5R (5-Layer Progressively Finer Oiled Cotton Gauze)
• Replacement Filter SKU: aFe 24-91143 (6.75" x 4.75" Elliptical Flange, 9" Tall)
• 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
• Housing Type: Sealed One-Piece Heat-Resistant Polymer Air Box (Stage-2 Si)
• Core Requirement: None (Brand New System - No Core Return Required)
• Warranty: aFe Power 2-Year Limited Manufacturer 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 MAF sensor and Intake Air Temperature sensor trucks using the supplied adapter)
• Fitment Notice: Direct bolt-on replacement requiring no cutting or drilling of factory components. No custom ECM tuning required. Note: Check current CARB E.O. status (D-550-24) or state restrictions before shipping to California.
• Installation Tip: Use the included urethane plug to seal the auxiliary air inlet when operating in extreme dust, heavy snow, or deep water conditions. Service and re-oil the Pro 5R filter element every 30,000 to 50,000 miles.