6637 installed today
Logistics Pro
Joined: Mar 2004
Posts: 4,221
Likes: 3
Originally Posted by Bubbatruck
ryaneverk2
I have no idea if my iah is intact. I'm not sure what it looks like either. I have to do a search and see what it looks like. Thanks for the lead and I think it is mostly the really cold that does it. When it gets to around 20 it doesn't do it then.
I have no idea if my iah is intact. I'm not sure what it looks like either. I have to do a search and see what it looks like. Thanks for the lead and I think it is mostly the really cold that does it. When it gets to around 20 it doesn't do it then.
If it's only smoking white for a bit while it's warming up, that's fine, but if it's smoking white still while you're driving, that seems a bit abnormal. If that's the case, might wanna make a new thread and see what folks think about that.
Hotshot
Joined: Nov 2006
Posts: 11,288
Likes: 269
From: North of Greenville
I've seen several guys in here say that they've measured the air temps under the hood, and at travel speeds there is very little difference in air temp under the hood and that outside. Other guys have gone ahead and built some homemade heat shields, though. Depends on what you want to work on.
In terms of "fit", I left my stock air box bottom under the battery, which has those two "fingers" sticking out that makes it difficult to arrange the 6637 without hitting the hood. What I discovered was that if I tilt the filter up and nestle the bottom of the closed end between the two "fingers", I get a good fit and the hood closes just fine. My install is in my gallery, but the final result is below. You can see how I had to do the tilt.
In terms of "fit", I left my stock air box bottom under the battery, which has those two "fingers" sticking out that makes it difficult to arrange the 6637 without hitting the hood. What I discovered was that if I tilt the filter up and nestle the bottom of the closed end between the two "fingers", I get a good fit and the hood closes just fine. My install is in my gallery, but the final result is below. You can see how I had to do the tilt.
Elder User
Joined: Oct 2006
Posts: 600
Likes: 1
From: Albuquerque, NM
Your description is perfect F250, that's exactly how mine sits. I have the yellow duralast battery and I used yellow wire loom over my coolant filter. It looks really nice. A yellow filter cover like yours would really dress it up now.
Hotshot
Joined: Nov 2006
Posts: 11,288
Likes: 269
From: North of Greenville
Yeah... I really like my cover... only wish it was outside the hood so more folks could see it. I made the bag and logo myself and did a simple iron-on transfer. I still want to take up a seam or two to get a little tighter fit, but it's fine for now.
FTE Stories
Ford Trucks for Ford Truck Enthusiasts
Top 6 Best Deals Available on New Fords & Lincolns Right Now
Brett Foote
This Hennessey Takes the Expedition Tremor's Off-Roading Capability to the Next Level
Verdad Gallardo
Top 10 Fords at 2026 Carlisle Ford Nationals
Joe Kucinski
3 Best / 3 Worst Parts of Modern Ford Ownership
Brett Foote
10 Amazing Upgrades That Solve Common Ford Truck Owner Headaches
Pouria Savadkouei
Every 2026 Ford Engine Explained
Brett Foote
10 Ugly Ford Trucks That We Still Kinda Love
Joe Kucinski
10 Things Every Truck Owner NEEDS (2026 Edition)
Michael S. Palmer
Rezvani's Latest Post-Apocalyptic Monster Is a Ford F-150 Raptor Underneath
Verdad Gallardo
New User
Joined: Feb 2007
Posts: 14
Likes: 0
Cross Reference For 6637
I was doing some checking at my local NAPA store and some other auto part stores. I was asking for the NAPA 6637 or WIX 46637, and the only cross referenced filter that came up was a FRAM CA6818 - cost around 40$, but they would have to order it. Two stores came up with this #.
Not satisfied with this, I tried to cross the filters on the web and found a list of filters reffered to as "B.H.A.F." Big Honking Air Filters. Here is a list of different manufacturers that crossed with the FRAM CA6818:
FLEETGUARD - AH19037 DONALDSON - B105006 AFE - 20-40044
BALDWIN - PA2820 HASTINGS - AF1012 UNI - 908
CARQUEST - 87790 JOHN DEERE - PMAH19037 BIG A - 93790
CATERPILLER - 3I0005 FLEETRITE - AHR819037
LUBER-LINER - LAF2531 and a different # for NAPA - 2790 and
WIX - 42790
Sorry it is so long, I just wanted to throw these out there if someone needed one in a pinch.
P.S. I just ordered a WIX 46637 from the link & was curious if a 4" pvc sch-40 would work in lieu of the exhaust?
Not satisfied with this, I tried to cross the filters on the web and found a list of filters reffered to as "B.H.A.F." Big Honking Air Filters. Here is a list of different manufacturers that crossed with the FRAM CA6818:
FLEETGUARD - AH19037 DONALDSON - B105006 AFE - 20-40044
BALDWIN - PA2820 HASTINGS - AF1012 UNI - 908
CARQUEST - 87790 JOHN DEERE - PMAH19037 BIG A - 93790
CATERPILLER - 3I0005 FLEETRITE - AHR819037
LUBER-LINER - LAF2531 and a different # for NAPA - 2790 and
WIX - 42790
Sorry it is so long, I just wanted to throw these out there if someone needed one in a pinch.
P.S. I just ordered a WIX 46637 from the link & was curious if a 4" pvc sch-40 would work in lieu of the exhaust?
Post Fiend
Joined: Feb 2006
Posts: 11,892
Likes: 2
From: Middle Tennessee
Originally Posted by KC'sF350
P.S. I just ordered a WIX 46637 from the link & was curious if a 4" pvc sch-40 would work in lieu of the exhaust?
Post Fiend
Joined: Feb 2006
Posts: 11,892
Likes: 2
From: Middle Tennessee
Originally Posted by ryaneverk2
Is your IAH (intake air heater) intact? It's purpose is to reduce white smoke at idle. It's not a necessary thing, but can help with what you're describing.
Regardless, as long as the intake air temp sensor is still in-tact, the new filter shouldn't effect or cause white smoke at all.
Regardless, as long as the intake air temp sensor is still in-tact, the new filter shouldn't effect or cause white smoke at all.
Hotshot
Joined: Nov 2006
Posts: 11,288
Likes: 269
From: North of Greenville
In other words, Tenn... if we have an automatic transmission, we will never see any conditions that allow the AIH to operate? Just asking for clarification, because I've already removed mine.
Thread Starter
|
Lead Driver
Joined: Mar 2000
Posts: 9,359
Likes: 1
From: Hampstead, NC
Originally Posted by F250-Newbie
In other words, Tenn... if we have an automatic transmission, we will never see any conditions that allow the AIH to operate? Just asking for clarification, because I've already removed mine.
Actually, I believe it operates when the truck is in park(doesn't matter if park brake is set), Oil temp below 131deg, air temp below 31deg. I'm not 100% sure on these numbers, doesn't matter to me anymore, mine is gone as well.
Laughing Gas
Joined: Jan 2005
Posts: 920
Likes: 7
From: Mazon, IL
The PVC has a smaller I.D. due to the thickness, I actually had mine setup without and pipe. I just forced the filter on and clamped it. If fit tight and worked fine. I wanted it to lay in the "pocket" a little more level and flat, so I bought a 4" 45* stainless steel elbow on EBAY. I cut off about 3" from both ends, and cleaned up the edges and wiggled it around till I got the fit I wanted. It holds good, and looks good.