Closed Box with Scoop (398542, 3985462) 2004-2005 Ford F-150 4.6L V8 - Volant Performance

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Closed Box with Scoop (398542, 3985462) 2004-2005 Ford F-150 4.6L V8

1 review
Filter Guide

Filter Options
  • Volant air intake systems utilize a high-velocity venturi filter adapter which provides a smooth transition through the MAF sensor into the intake tube for a much needed airflow improvement over the factory rubber tubing and resonator box. Volant's Cool Air box is larger than the factory unit and incorporates a larger opening to collect a higher volume of colder ambient air.

    Filter Options Include:

    • Choose a PowerCore® for the best filtration on the market with 100,000 Maintenance Free Miles of Driving and perfect for hard conditions
    • Choose MaxFlow 5 Oiled Filter for improved performance with the comfort of oiled filtration technology for those looking for horsepower
    Filter Type

    MaxFlow 5 Oiled Filter
    Filter Part # 61509 5111
    Pre-Filter Part # 51920 51906
    Filter Maintenance No Maintenance 5100
    Throttle Body Spacer Part # 729754

Customer Reviews
4.0 Based on 1 Reviews
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    31 Jul 2021

    Good product but poor install instructions.

    So far so good, got the product installed. Some parts are pretty straight forward but others are confusing as how to install. Thus is due mainly to how poor the install direction diagrams are. This is more so to the ram air scoop installation. For starters once you remove your left side tow hook odds are that the metal bracket in the frame rail that said bolts for the tow hook will break free. This makes the install of the ram air scoop much more difficult. Second, you can not reinstall the tow hook. The Ram Air scoop is not deep enough. This is where this product loses a star. The directions do not give a clear answer on what direction the ram air scoop tubing is oriented. It basically becomes a trial and error process. Also you might have to trim a small corner of your inner fender liner off to get the tubing going to the air box to fit. I also installed the rubber boot that connects the to the air box from the ram air scoop and tightened the bottom clamp while leaving the clamp going to the air box loose so you can push the air box down onto the coupler. Also I had a random socket head cap screw that wasn't part of my kit and was missing a M6x1.0 30mm bolt. As for mounting the air box to the truck you can use 2 of the 3 holes inside the box. One will come up from the bottom right near the brake lines. The second one is nearest the fender. I wound up have to tap the hole out that's on the truck so that the bolt would fit. Other wise you have to jack the truck up and remove the tire and inner fender liner. And if you live in the rust belt alot of those bolts and screws are pretty much solid rust now and will break off. So that is why I went down through the top of the air box for the second screw to mount the air box. Also the breather bypass hose from the crank case is about 4 inches too short. It has a nice tight bend restricting air flow at the valve cover. Also there are no hose clamps to hold said bypass hose on either. Other than that it works good, sounds good and looks good. Also make sure your Mass Air Flow sensor connections are fully seated in their sockets. I forgot to make mine click and the truck ran like dirt.

    Dan B.
    United States United States

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