AFE "Big Boost" BHAF Washable Filter Ford 7.3L Powerstroke
4 In. F X 8-1/2 In. B X 8-1/2 In. T(Inv) X 11 In. H
Rated at 850 CFM
36 Reviews Hide Reviews Show Reviews
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5 Holy Grail
Posted by Offgrid fab on Dec 27th 2022
This B is huge!! What a difference of airflow! Don’t forget to get your RiffRaff replacement cover to extend life
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4 Air filter
Posted by Andrew on Aug 30th 2022
Would recommend
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5 Super Sucker
Posted by Matthew McBride on Aug 22nd 2022
Don’t get your hopes up when I say this air filter sucks. Bc it’s a damn good thing. I had the 6637 filter on my 7.3 that cost about $40 and this filter sucks way more air and I can hear the turbo much better aswell. I love this air filter plus I can re oil it or re use it unlike the paper 6637. Much better filter for the money would recommend and buy again. Very happy with this product!
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5 Afe
Posted by Bob on May 28th 2022
In my opinion this is the best filter I’ve tried
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5 AFE Big Boost Filter
Posted by DD on Feb 19th 2022
Definitely a BHAF! Well made with filtration even on the end cap. Fitted to my AFE stage 2 kit. Extremely tight fit, but it works.
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5 Great addition
Posted by Jeremy B. on Feb 14th 2022
Added this after I got a new KC stage 1 turbo. Had the 6637 on with it for a while. This filter definitely flows more. Haven't had it on long enough to tell for mpgs but I'm not too worried about those anyway. I can definitely say it lowers egts and helps the boost come on a smudge faster. With stock injectors an 80hp PHP with the turbo I couldn't get over 1100 EGT's on a WOT run. If you're thinking about it do it.
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5 BigAir
Posted by Joshua Bittner on Oct 20th 2021
I had the regular 6637 filter on my 03 7.3 and after putting this filter on I hear the turbo waaaaaay more. Definitely more throttle response too
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5 Wow
Posted by Smith on Dec 4th 2020
Clay shipped my order 18 minutes after I placed my order!!! Awesome customer service and great product!
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5 More air then I really Needed but it works like a charm!
Posted by Brandon on Dec 23rd 2019
Works pretty well, install doesn't take but a few minutes and you're set. I left my stock airbox tube in it and I can definitely hear the turbo getting much more air than needed. Overall a pretty good product.