Riffraff Diesel 6637 7.3L Intake Filter Kit
This kit contains:
- Riffraff Diesel 6637 Filter
- Optional AFe Big Boost washable, or a Donaldson Blue® Filters
- Custom "Riffraff Diesel" Pre-filter Cover (Optional $29)
- Filter Adapter Tube
- 94-Early 99 Uses a 45* Tube
- Late 99-03 Uses a straight Tube
- SS T-Bolt Clamp
Late 1999-2003 Powerstroke production date 12-7-1998 and after
468 Reviews Hide Reviews Show Reviews
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6637 air filter
Good improvement over stock box with K&N ….
Would be a 5 star if it were washable/reusable , such as the AFE big boost but definitely a good product -
Air filter kit
Great product. Woke up my truck
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Easy install.
I wanted an affordable kit that kept the stock PCV equipment. This is it, and looks good too. My old 7.3 is breathing great without the restrictive stock airbox, Easy install too.
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Great Addition
Air filter kit arrived fast and in great condition. Huge increase in airflow compared to the stock filter i had. I highly recommend this product.
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6637
Great product
increased mileage
easy install -
Great
This didn’t even take 5 mins to install. Easy, quick, and done. Will buy from here again.
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Fast shipping, good price, proven product.
Fast shipping, easy to install.
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6637 Cold Air Intake Kit
This Cold Air Intake Filter Kit certainly improved the intake flow and was very easy to install. I got the kit with the blue filter and everything fit together as expected without any issues.
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Best easy modification
... I can do to my 7.3 power stroke. Riffraff makes it easy with their kit. Best investment ever.