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A Dry Filter to Keep Your Powerstroke Going for the Long Haul

And it's 100% made in the USA!

Riffraff Diesel's 6637 dry filter not only is a direct replacement for your current 6637 style filter, but is also washable up to 5 times that's savings for your wallet!

  • Made of a proprietary blue dry synthetic media

  • Flows 10.53% more air than Donaldson's filter

  • Maintains a 99.98% efficiency using ISO A2 Dust test criteria

  • 100% Made in the USA When you're filter needs cleaning, simply rinse off with a garden hose and lightly blow dry with shop air or air dry up to 5 times.


For over 15 years, this family-owned and operated business has been the one to trust for all of your Powerstroke needs. Riffraff Diesel engineers, manufactures, assembles, and retails the best Made in the USA parts and accessories for your 7.3L and 6.0L Powerstroke. And if you're looking for OEM Ford and Motorcraft parts, you can find them at discount pricing and in stock with same day shipping.


Let Riffraff Diesel be your one-stop shop for all of your towing, daily driver, racing, and work vehicle needs.

Save money with Riffraff Diesel's 6637 Dry Washable Filter

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