Riffraff Diesel 6637 Replacement Intake Filter for Ford 7.3L 94-03
We suggest buying them in quantities of 2 as your shipping won't increase much and you will save money.
100% Made in USA
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Works awesome!
Running over 400hp through mine. Works awesome!
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air flow
Thought it would help on fuel economy haven't seen much difference and less whistle but looks awesome with the cover
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as advertised
Have not been able to see if can improve performance but it seems to work well.
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big filter
I Have been running this filter for some time. I always get it from riffraff. Not only do they have it for the best price but they are timely on shipping.
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filter flows very well definitely recommend it
This fister flows plenty of air my old one i couldn't build more than 15 psi now im up to 22 only complaint i have is how big it is but i guess its the sacrifice you have to make forgood filtration and goid flow
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excellent product, wish it was cleanable/reusable
Since installing this on my 1994.5 7.3 powerstroke, my higheay mileage went from 17-18 to a steady 21 (unloaded.) My truck is a five speed with 4.10 gearing and thats running right at 65 mph turning roughly 2250 rpms. Highly reccomended
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NAPA 6637 Air Filter
Great product. Excellent air flow. Increased my gas mileage 1.5 miles to the gallon. Bought a second for my dads truck. Much cheaper than a complete cold air intake system and doing just a good.
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best filter
Love this filter so simple unlike all the other setups out there
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6637 filter
Excellent product looks great feel the diffrence from stock