6637 Replacement Cover - Black

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Made to high standards, these covers are designed to extend the life of your air intake filter while also giving you a way to visually see the amount of dust collected.  The covers work equally well on both oiled and non-oiled filter elements to prevent larger debris from prematurely reducing critical air flow to your engine.

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  • 4
    Replacement filter cover

    Posted by Joe on Aug 10th 2020

    This was the 2nd time I purchase this item, the first one was very durable and fit well over the filter the second one I received was cheap and seemed of lower-quality.

  • 1

    Posted by Rich on Jul 27th 2020

    Ripped when installing over the filter. Cheap thin material doesn’t stand a chance going over the metals filter grates.

  • 5
    Pre filter

    Posted by Joshua on Jun 19th 2020

    Good and snug on the filter

  • 5
    Great deal

    Posted by JoJo on Jun 10th 2020

    This is just what I needed for my 7.3. Keeps bugs and bigger debris from getting sucked into the filter. Thank you.

  • 5
    Highly Recommend this with 6637

    Posted by Matt on May 26th 2020

    This cover will keep most debris out of your filter and makes the filter last alot longer. Cleans up the look of the filter too since it says RiffRaff Diesel on it.

  • 5
    Very nice filter cover

    Posted by Ethan Weldon on May 6th 2020

    Very happy with the quality of this filter cover, went on with no issues

  • 5
    Great Fit and Finish

    Posted by Unknown on Apr 15th 2020

    Fits good, slides right on and seems to be helping my filters last longer. Not to mention it just looks sharp under the hood.

  • 5
    6637 Cover

    Posted by Chris Thompson on Apr 14th 2020

    Nice product. Perfect fit. Should extend the life of my new blue 6637 filter. Looks cool,

  • 3
    Not as good as previous versions

    Posted by Val on Mar 27th 2020

    The previous version with dual drawstrings was far better and durable. This feels like it should have cost at most $2 not $30. Of course RiffRaff wont post a honest review so no one will ever see this.