04-08 Ford F-150 aFe 51-80512 Magnum FORCE Stage-2 Si Cold Air Intake System w/ Pro DRY S Filter

aFe Magnum FORCE Stage-2 Si Cold Air Intake System w/ Pro DRY S Filter - Part Number 51-80512

The aFe Magnum FORCE Stage-2 Si Cold Air Intake System (Part Number 51-80512) is engineered to deliver substantial performance improvements for 2004-2008 Ford F-150 and 2006-2008 Lincoln Mark LT models equipped with the 5.4L V8 engine. Designed using extensive dyno testing, this premium sealed cold air intake system increases airflow by up to 69% over the factory intake, producing dyno-proven gains of up to 23 horsepower and 25 lb-ft of torque. The fully enclosed intake design helps reduce heat soak by drawing in cooler, denser air while maintaining excellent engine protection. Featuring a washable and reusable Pro DRY S synthetic air filter, a heat-insulating molded intake tube, and a durable rotomolded housing with a black powder-coated aluminum cover, this system offers an ideal combination of performance, durability, and low maintenance. Installation utilizes factory mounting locations with no ECU tuning required, making it an excellent upgrade for drivers seeking improved throttle response, stronger acceleration, and dependable long-term performance.

Key Features

• Dyno-proven gains of up to 23 horsepower and 25 lb-ft of torque.
• Flows up to 69% more air than the factory intake system.
• Large 5-1/2-inch conical Pro DRY S washable and reusable synthetic air filter.
• Three-layer progressive, non-oiled filter media provides excellent filtration with simple maintenance.
• Fully sealed rotomolded plastic air box minimizes engine heat while maximizing cool air intake.
• Black powder-coated aluminum cover allows convenient filter access during maintenance.
• Auxiliary air inlet scoop increases incoming air volume for improved airflow and throttle response.
• Heat-insulating molded intake tube is dyno tuned to maximize airflow velocity and engine efficiency.
• Retains factory emissions connections and mounting locations for a straightforward installation.
• No ECU tuning required after installation.
• Includes heat shield, mounting hardware, and installation components.

Benefits

• Improves horsepower, torque, and overall engine performance throughout the RPM range.
• Enhances throttle response for quicker acceleration and a more responsive driving experience.
• Draws cooler, denser air to help improve combustion efficiency.
• Washable and reusable Pro DRY S filter reduces long-term replacement filter costs.
• Sealed intake design helps protect the filter from hot underhood air.
• Engineered for reliable daily driving and towing applications.
• Installs using factory mounting locations without permanent modifications.
• Backed by aFe POWER's Limited Lifetime Warranty for the intake system, with warranty coverage for manufacturing defects. Refer to the manufacturer's warranty policy for complete coverage details.
  

Product Specifications

• Manufacturer: aFe POWER
• Product Line: Magnum FORCE Stage-2 Si Cold Air Intake System
• Part Number: 51-80512
• Replacement Air Filter: 21-90032
• Optional Pre-Filter: 28-10133
• Air Filter Size: 5-1/2-inch conical with inverted top
• Filter Media: Non-woven synthetic (Pro DRY S)
• Filter Color: Gray
• Filter Type: Washable and reusable, non-oiled
• Air Box Style: Fully enclosed sealed housing
• Housing Material: Rotomolded plastic
• Cover Material: Black powder-coated aluminum
• Intake Tube Material: Heat-insulating molded plastic
• Heat Shield: Integrated sealed housing
• Mounting Hardware: Included
• Horsepower Gain: Up to 23 HP
• Torque Gain: Up to 25 lb-ft
• Airflow Increase: Up to 69% over stock
• ECU Tuning Required: No

Install Difficulty Level

Easy. This intake system is designed as a direct bolt-on upgrade using factory mounting points and existing emissions connections. No cutting, drilling, or ECU tuning is required, making installation straightforward for most DIY enthusiasts using basic hand tools. Under normal conditions, installation can be completed in as little as 30 minutes.

Vehicle Fitment

• 2004-2008 Ford F-150 5.4L V8 Gas
• 2006-2008 Lincoln Mark LT 5.4L V8 Gas

CARB Approved

This aFe POWER Magnum FORCE Stage-2 Si Cold Air Intake System is CARB approved for applicable vehicles and is covered under CARB Executive Order (EO) D-550-15. This EO allows legal use on emissions-controlled vehicles for approved applications in all 50 states. Always verify the specific vehicle application before purchase.

If there are any questions about this product or to report product description inaccuracies, contact the MPT Performance experts at (407) 636-7077 or by email.