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.
Installation Note: Take care installed over filter elements with metal cages as a metal snag can tear your cover.
57 Reviews Hide Reviews Show Reviews
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Fits the Napa 6637 sir filter perfect
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Fit nicely
Nice tight fit and dressed up the filter but hoping it extends the life of the filter
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Logo 6637 cover
Well made cover. Fits my AFE Big Boost filter nicely . Red looks sharp with the red boost tubes of my Banks Technicooler.
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Easy to slip on. Very bright red. Definally nice upgrade.
Thanks riff raff
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Filter cover
Great cover just hard to get on without getting caught and ripping on sharp edges of filter
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6637 cover
Great fit easy to install
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Quality
Revived in mail had few small wholes and elastic material was fraying on one place but other than that dose the job
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Great working and Very Stylish!
I bought this product out of curiosity just to see how well it worked. The package arrived very fast. After getting it all installed and running it for a few weeks I can say that THIS is a good product. You can easily see the larger junks of dust and debris lodged in it. Best part is, the quality. The nice logo and just overall quality of the material make it a very nice working and looking product. It even helped grab attention on my Instagram page. All and all, Amazing product.
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Good fit
A little tight getting on but that was expected, it looks great and provides extra protection from bugs and debris under the hood! RiffRaff is always number 1! Great American company. Thanks again RiffRaff
