6637 Replacement Cover - Red

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6637 Replacement Cover - Red

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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  • 5
    6637 Cover

    Posted by D. Mo on Oct 26th 2018

    Ordered this product to cover the Donaldson Blue air filter in the 6637 kit.. as always Clay and his team deliver innovative and superior products!

  • 5
    Looks good and easy enough.

    Posted by Unknown on Aug 29th 2018

    Looks good and slid right over the filter no issues. Shipping was timely.

  • 5
    Cover 6637

    Posted by Schroeder on Apr 30th 2018

    Keeps 6637 clean, looks great.

  • 5
    Looks great

    Posted by Jay Z on Apr 3rd 2018

    Plug seems well made, and looks great

  • 5

    Posted by Bill on Feb 7th 2018

    They are a good prefilter and easy to keep clean and save on the main filter

  • 4
    Pretty good

    Posted by Unknown on Aug 21st 2017

    Good prefilter and like availability in colors and logo on it but wish it was a little thicker

  • 5
    6637 Cover

    Posted by Terry on May 1st 2017

    Well made fits nice & looks good.

  • 5
    Nice cover

    Posted by Unknown on Apr 28th 2017

    A great way to dress up the engine bay and keep bugs out of the filter.

  • 5
    Great product

    Posted by Steven on Mar 20th 2017

    It was really easy to install and was very happy with the product.