Can anyone tell me what air filter goes in here...

[firehonomichl]

I just bought this truck and of course no part store in town can find a air filter for this thing. It’s an 88 f250 7.3 with the ATS turbo obviously lol. Any info would be great. Thanks!

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[gnathv]

I’m pretty sure the filter number is inside the cover. Cast into the housing. It crosses over to an early Porsche turbo motor.

 

[gnathv]

It looks like you have an 088 turbo with the 085 air filter housing. I had this set up, not uncommon.


Replacement Air Filters.txt
Replacement air filters for original 093 system.
K&N= 33-2088
AC= A1288C
FORD= F3TZ9601Z
FRAM= CA7403
NAPA= 6317
PURO= A44853
WIX= 46317
Replacement air filters for original 088 system.
K&N= 33-2015
AC= A1114C
FORD= E6SZ9601B
FRAM= CA5057
NAPA= 6128
PURO= A33593
WIX= 46128
Replacement air filters for original 085 system.
K&N= 33-2004
AC= A175C
FRAM= CA3544
NAPA= 6115
PURO= A34759
WIX= 46115

 

[firehonomichl]

Perfect thanks guy y’all are the best. I’m gonna take this down to Napa as soon as I get off work! It’s a great running truck but that air filter is horrible so I’m trying to not drive it much tell I get a new one.

 

[gnathv]

With mine I discovered the 085 housing was causing the air restriction gauge to set if i ran wide open throttle, even with a new filter. I added another opening with a hose to front grill. This cured the air restriction. The 088 housing has more filter area.

 

[IDIBRONCO]

With mine I discovered the 085 housing was causing the air restriction gauge to set if i ran wide open throttle, even with a new filter. I added another opening with a hose to front grill. This cured the air restriction. The 088 housing has more filter area.

You're right. those are pretty restrictive housings. Even compared to the other styles. I like the idea of the second hole and hose.

 

[firehonomichl]

Is there any options out there for cold air intakes for them?

 

[gnathv]

You would have to fab something yourself. There are a lot of good examples in pictures in the forum. You would need a silicon angled coupler, clamps, appropriately sized and angled tube (aluminum) and a cone type filter. Here is an example on my powerstroke. Idi could be similar.

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Asking for IDI intake examples.

 

[Cubey]

For the 085 air box, I think the only paper filter still made is Mahle LX261. So it's that or K&N. Or getting rid of the box and having a tube with a cone or barrel type filter.

 

[Cubey]

With mine I discovered the 085 housing was causing the air restriction gauge to set if i ran wide open throttle, even with a new filter. I added another opening with a hose to front grill. This cured the air restriction. The 088 housing has more filter area.

My RV has a retaining ring for the 085 filter instead of the air box lid, because the lid can't fit in a van chassis. So it has the filter top completely open.

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That old K&N got thrown away due to how rotten the filter was. I bought a NOS K&N one still in the box and oiled it up with a fresh oil kit, and I keep the paper LX261 as a spare.

 

[firehonomichl]

Cool thanks guys! I ordered a k&n last night. I talk to Justin at R&D and that’s what he said as well.