Upgrades and Aftermarket - 99 & up 7.3L EngineUpgrading or adding OEM or aftermarket equipment to your 1999-Up Super Duty or Excursion with 7.3L Power Stroke diesel engine. Please confine discussion of topics in this forum to those items that are specific to the 7.3L Power Stroke engine.
Many years ago, I believe Ford had the Donaldson Company research and develop the Ford Severe Duty AIS system.
Ford wanted something, so I understand, to fix the dusting problems they were having with 7.3L engines in trucks used in the oil fields in extremely dusty desert environments. But I cannot remember a foam add-on to the system.
But at my age, my memory is not as good as it used to be. Perhaps they did....
2002 2WD XLT CrewCab, 3.73 Limited Slip, Assembled 08-09-01 in Ford's Cuautitian, Mexico plant. BTS Tranny with 6.0L Cooler, KC reverse backup lights with separate on/off dash switch, Undercover Bed Lid, Bilstein shocks, Gentex K-21 auto dimming/temp/compass mirror, Michelin LTX/MS2 tires, Factory Aluminum Wheels, Door Seal Mod, Ford Severe Duty AIS w/Zoodad, Royal Purple 75W-140, Fleetrite ELC Coolant, Billet Aluminium Thermostat Housing, Ford Factory Bed Liner, Sylvania Silverstar Ultras. Tekonsha P3 Brake Controller.
Ford wanted something, so I understand, to fix the dusting problems they were having with 7.3L engines in trucks used in the oil fields in extremely dusty desert environments.
Close, but no cigar. The Severe Duty AIS was developed by Ford and Donaldson to fix the dusting problems DoD was having with 7.3L engines in trucks used in the deserts of Kuwait and Iraq during the early days of the war with Iraq.
But it just happened that the hot-rodding enthusiasts discovered that the AIS was also an excellent cold-air intake system for use with a custom tune to pull more horses out of the 7.3L. It works as good as the twice as expensive aFe Stage II intake with ProGuard7 filter if your engine produces 400 HP or less - which is over 99% of us. (For the serious hot-rodder with more than 400 horses, they still need the aFe Stage II.)
No, the foam rubber connecter was not part of the design used in the dusty desert by DoD. As 444-4D stated, it was developed and sold buy an outside party. It sounds logical, but no one has proven that it is better than the original AIS design. I had the AIS on my 7.3L with 60-tow tune, and it worked great without the foam rubber connector.
My Sierra Blanca in the sig pic was a great pickup for 11.5 years. I sold it a coupla years ago. I drove a hand-me-down 2003 F-150 SuperCrew 4.6L 2V for a while, but it was unacceptable for towing more than a rowboat. Replacement is a 2012 F-150 EcoBoost SuperCrew Lariat that tows my 5,000-pound TT like a dream.
Any Ford dealer will sell you one for around $300. Tousley Ford will sell you one for less than $200: Tousley Ford Parts Depot
Whats the exact model of intake and filter to ensure i buy the best?
There is only one. It's the Ford Severe Duty Air Induction System (AIS) for the 7.3L PowerStroke Diesel (PSD).
"Early" '99s needs an extra part to install the AIS kit, an air intake tube that costs about $36 from Tousley (and your Ford dealer sells that part too). Generally, early '99s were built in CY 1998. '99.5s were built in CY 1999. Look at your Federal Certification Label on the driver's doorframe. That's the label that includes VIN, tire size and PSI, paint codes, and other codes. It also includes the month/year the truck was built. If the truck was built in December, 1998, it might be either an early '99 or a '99.5.
If yours is a '99.5, then simply order the AIS kit from Tousley. If yours is an early '99, then call Tousley and ask them to include the conversion kit required for an early '99 to install the AIS kit.
...someone stated 198.00....
That was three years ago, from a vendor that's apparently belly up now. But Tousley beats that price by a few bucks, so you can get it from Tousley for less than $198 if your truck is a '99.5 or later 7.3L.
I bought mine off of ebay too about a month ago. It was only described as Motorcraft FA-1759 filter kit, everything was included with instructions. Very happy with purchase. Kit was very easy to install. I paid $176 shipped. The seller was subford48 but doesn't have any listed at this time.
tried to find AIS severe duty air intake on trousley web site . no luck . looking for price to compare with the other diesel sites.so far i have found $289.
2000 F250 PSD 7.3 CCLB A/T wrecked by red light runner 2/16/13 & still not fixed ... but its looking like the good hands are gona give it a shot . still cant believe there putting a new frame under it . it looks like a bomb went off in that body shop . theres truck pieces parts everywhere . . .
Yeah, the link in my post above dated 12/23 no longer works because the catalog is no longer a current catalog - it probably expired 12/31. Tousley changed their home page so there is no longer an easy button to get to 7.3L parts and specials. Kevin remembered the part number and was able to find it with a part number search. But I suspect all special OEM parts for 7.3Ls will become scarce now because the newest one is over 10 years old. Ford doesn't usually continue to make OEM parts for vehicles over 10 years old. So I've got to remember that part number - FA1789 - to search for any left-over stock at Ford dealers.
Last edited by SmokeyWren; 01-06-2013 at 08:42 AM.
It's going to be tough to remember a number you've already forgotten.
CRS trick: Make a note, and put the note with other notes of stuff that you may need to "remember" later. Kevin posted a working link, and the part number was in that link, so I wrote it down. Now I no longer need to memorize the number as long as I don't forget where I put that note.
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