aFe 51-81022-1 Magnum FORCE Stage-2 Si Cold Air Intake for 03-07 Ford 6.

Vehicle Fitment

• 2003-2005 Ford Excursion (Power Stroke Turbo Diesel V8 6.0L)
• 2003-2007 Ford F-250 Super Duty (Power Stroke Turbo Diesel V8 6.0L)
• 2003-2007 Ford F-350 Super Duty (Power Stroke Turbo Diesel V8 6.0L)
• 2003-2007 Ford F-450/F-550 Super Duty (Power Stroke Turbo Diesel V8 6.0L)

Features

• aFe Magnum FORCE Stage-2 Si Pro DRY S cold air intake engineered for enhanced diesel airflow
• One-piece sealed housing with auxiliary air inlet for coolest possible intake charge
• Large 3-layer Pro DRY S synthetic air filter - oil-free, washable and reusable
• CAD-designed dyno-tuned roto-molded intake tube for optimized airflow delivery
• Unique filter-to-housing interface with patent-pending design for easy installation
• Premium stainless-steel worm-drive clamps for secure, corrosion-resistant fitment
• Outflows factory intake by up to ~29 % for improved torque and power response
• Bolt-on installation using factory mounting points - no cutting or drilling required

Specifications

• Part Number: 51-81022-1
• Brand: aFe Power Magnum FORCE Stage-2 Si
• Applicable Years: 2003-2007
• Make: Ford
• Models: Excursion, F-250/F-350/F-450/F-550 Super Duty
• Engine: Power Stroke Turbo Diesel V8 6.0L
• Filter Media: Pro DRY S synthetic, washable/reusable
• Housing Material: Sealed plastic housing with auxiliary inlet
• Intake Tube Material: Roto-molded plastic
• Airflow Improvement: ~29 % over stock intake (625 CFM @ 7" H2O)
• Estimated Performance Gains: +7 HP / +14 lb-ft torque (approximate)
• Emissions: Not CARB exempt - not legal for sale/use in CA, CO, NY, ME and other CARB states
• Warranty: 2-year limited aFe warranty

Included Components

• 1x Magnum FORCE Stage-2 Si sealed intake assembly
• 1x Pro DRY S washable/reusable synthetic air filter
• 1x Dyno-tuned roto-molded intake tube
• Stainless-steel worm-drive clamps
• Auxiliary inlet hardware & urethane plug
• Installation instructions

Product Description

The aFe 51-81022-1 Magnum FORCE Stage-2 Si Pro DRY S Cold Air Intake System is a performance-oriented airflow upgrade built for 2003-2007 Ford Super Duty trucks and 2003-2005 Ford Excursion equipped with the Power Stroke 6.0L turbo diesel engine. This direct-fit system replaces the restrictive factory intake with a sealed housing and dyno-tuned intake tube that improves airflow by up to approximately 29 % over stock, helping enhance torque delivery, throttle response, and engine breathing without sacrificing filtration efficiency.

Featuring a large oil-free, washable Pro DRY S synthetic air filter, this system offers excellent filtration and maintenance convenience, while the unique filter-to-housing interface and one-piece sealed design simplify installation using existing factory mounting points with no cutting or drilling required. Premium hardware such as stainless-steel worm-drive clamps ensures a secure, corrosion-resistant fit. Under ideal conditions, expect performance improvements of up to approximately +7 HP and +14 lb-ft of torque. Note that this intake is not currently CARB exempt and is not legal for sale or use in California, Colorado, New York, Maine and other states with similar emissions standards - always verify local emissions regulations before purchase.