Everybody knows that the intake systems on the 2004 to 2008 F150s, especially on the big Triton 5.4L V8. The odd scoop into an over-engine airbox system just begs for heat soak and restriction. This is one of the reasons that a cold air intake is one of the most popular modifications for these trucks. Our 2007 F150 5.4L Project Truck definitely needed a power and efficiency boost, so we turned to our old friends at aFe for help and they sent out one of their Stage 2 Cold Air Intake kits for the 2004 to 2008 F150 5.4Ls. aFe's intake is a pretty easy, drop-in replacement kit for the 5.4L's factory air scoop and air box that delivers much improved airflow efficiencies and performance. The aFe kit comes with everything you need, and doesn't leave a whole heck of a lot to complain about. Not to mention that it looks pretty cool under the hood.

2004-2008 F150 5.4L aFe Stage 2 Cold Air Intake Install

The first thing we needed to do was enlist some help from our friends down at Extreme Performance down in Goodyear, Arizona, with installing our intake kit while we stood around to take pictures and film all the fun. Jay was waiting to help us out, so we packed up our gear and headed down to Extreme. We pulled into one of their garages and Jay got right to work.

Jay's first step was to remove all the factory intake hardware up to the throttle body. He started by pulling out the factory air duct from the air box and removing it from the truck.

2004-2008 F150 5.4L aFe Stage 2 Cold Air Intake Install

Next, Jay removed the bolts holding the air box assembly to the intake manifold.

2004-2008 F150 5.4L aFe Stage 2 Cold Air Intake Install

2004-2008 F150 5.4L aFe Stage 2 Cold Air Intake Install

Once all four bolts were removed, Jay pulled the air box assembly out of the engine bay after disconnecting the wiring harness for the MAF sensor and the air box's vacuum tube.

2004-2008 F150 5.4L aFe Stage 2 Cold Air Intake Install

Jay then put the silicone couplers on aFe's inlet tube before slipping the 90° coupler into place over the throttle body.

2004-2008 F150 5.4L aFe Stage 2 Cold Air Intake Install

Next, Jay installed aFe's inlet tube bracket to the inlet tube using supplied screws and let it rest on the mounts for the OEM air box assembly.

2004-2008 F150 5.4L aFe Stage 2 Cold Air Intake Install

2004-2008 F150 5.4L aFe Stage 2 Cold Air Intake Install

The Jay fit a clamp around the coupler on the throttler body and made sure the coupler was in proper position.

2004-2008 F150 5.4L aFe Stage 2 Cold Air Intake Install

With everything looking like it was in place, Jay bolted down the inlet tube's support bracket with aFe's supplied bolts and washers.

2004-2008 F150 5.4L aFe Stage 2 Cold Air Intake Install

2004-2008 F150 5.4L aFe Stage 2 Cold Air Intake Install

Jay then moved over to the driver's side of the truck and he unbolted the retaining screw for the coolant reservoir before installing aFe's support bracket.

2004-2008 F150 5.4L aFe Stage 2 Cold Air Intake Install

2004-2008 F150 5.4L aFe Stage 2 Cold Air Intake Install

With the support bracket in place, Jay dropped in the heat shield assembly and fit on the coupler on the inlet tubing.

2004-2008 F150 5.4L aFe Stage 2 Cold Air Intake Install

2004-2008 F150 5.4L aFe Stage 2 Cold Air Intake Install

After he got the heat shield assembly situated, Jay bolted it to the support bracket near the coolant reservoir.

2004-2008 F150 5.4L aFe Stage 2 Cold Air Intake Install

Next, Jay tightened down the couplers over the coupler holding the inlet tube to the head shield in preparation for installing the filter.

2004-2008 F150 5.4L aFe Stage 2 Cold Air Intake Install

Jay then installed the air filter onto the protrusion on the heat shield and tightened down its clamp.

2004-2008 F150 5.4L aFe Stage 2 Cold Air Intake Install

Since the intake was more or less solidly in place, Jay tightened down the clamp holding the 90° coupler from the inlet tube to the throttle body.

2004-2008 F150 5.4L aFe Stage 2 Cold Air Intake Install

Jay then threw on the seal for the top of the heat shield assembly.

2004-2008 F150 5.4L aFe Stage 2 Cold Air Intake Install

Next, Jay grabbed the MAF sensor out of the factory air box and installed it into aFe's inlet tube using aFe's supplied hardware before reconnecting its harness.

2004-2008 F150 5.4L aFe Stage 2 Cold Air Intake Install

2004-2008 F150 5.4L aFe Stage 2 Cold Air Intake Install

Jay's final step was to remove the Ford OEM vacuum tubing and replace it with a length of hose provided by aFe.

2004-2008 F150 5.4L aFe Stage 2 Cold Air Intake Install

Once that was in place, our install was complete.

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