2004-2008 Ford F-150 V8-5.4L Magnum FORCE Stage-2 Si Cold Air Intake System w/Pro DRY S Filter Media

Part#:
51-80512
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This Stage-2 sealed cold air intake system produces 23 hp and 25 lbs. x ft. torque and outflows the factory intake by 69%. Fully enclosed in a heat-shielding molded plastic housing; this air intake system features a washable/reusable conical air filter that improves airflow for increased horsepower and torque. The housing features an auxiliary inlet duct for better airflow as well as a black powder coated aluminum cover that provides ready access to the filter for servicing. This intake system also features a heat-insulating molded plastic tube that replaces the stock intake tract and directs increased air flow with improved volumetric efficiency for maximum performance. The filter is constructed with 100% polyurethane for long life and multiple cleaning cycles.

5-1/2" Conical Air Filter with Inverted Top:
This intake utilizes a huge, 5-1/2" conical Pro DRY S performance air filter with inverted top for maximum flow. This 3-layer progressive, non-oiled air filter provides maximum convenience.

Sealed Intake Design:
A completely sealed rotomold plastic housing with a black powder coated aluminum top keeps warm engine air out and allows for a cooler, fresher, denser air intake charge.

Auxiliary Air Scoop:
The sealed housing features an auxiliary air inlet scoop that allows for increased air volume into the intake for increased performance and improved throttle response.

Dyno Tuned Intake Tube:
The intake tube has been engineered and dyno tested for maximum air flow and velocity for increased performance. All emissions components and bracket locations are used for a hassle-free installation.

Hassle-Free Installation:
aFe POWER has developed this intake to provide a hassle-free installation that utilizes all factory mounting locations.

This intake is 50-state legal (CARB E.O Number D-550-15).


  • Instructions
  • Document
  • Dyno Chart


Vehicle Applications

Year Make Model SubModel Engine Fuel
2004-2008Ford F-150 V8 5.4L Gas
2006-2008Lincoln Mark LT V8 5.4L Gas
More Information
Weight16.00 lbs
Parent Product TypePerformance Upgrades
Product TypesCold Air Intakes
BrandAdvanced Flow Engineering
MakeFord
ModelF150
Year2004, 2005, 2006, 2007, 2008