Ramforums

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i will take my filter out this weekend and see if anything is passing thru it, but for me, it wasnt worth it.
$17 for door
$10 for filter
20min to cut and trim that opening for the door

meh... more air bypasses the filter than goes thru it.

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mcgaughy/belltech/vararam

The white hood you see is the recirculation door. So its an air input to the system. It moves so that air can come from outside the cab (the cowl) or from inside the cab (recirc).

The blower motor is below the filter and sucks the air through the filter.

See the arrows on the door, the air flow is down through the filter.

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2008 Dodge Ram Quad 4.7
Mods: K&N Cold Air Intake, Debagded, Husky Liners floormats, McGaughy 2/4.5 lowering kit, Dynomax UltraFlow SS muffler, dual exhaust rear exit, painted calipers, Front seat heaters, 110 VAC inverter, smoked 3rd brake light, superchips tuner

It works great I just changed my filter and it was dirty so it is doing the job. Like I said before it is the same design as other Dodges and same filter. I bought my filters from a vendor on here Rock Auto and they have best deals on them I have seen.

More Information for ATP TA4

They will also give you a Ram Forum discount which I forgot to use. Great filter great price. Great mod and it was easy and cheap to do.

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Hi everyone,

Just did the cabin air filter modification to my 2012 1500. After reading the posts on the filter not sealing, I figured the easy way to tell was to put the filter in and look up with the blower motor removed. If you do that you will see that it is sealed all the way around (which kind of surprises me with the way it is stuck in there). Also a tip that I haven't seen for cutting out the filter opening. Using the utility razor knife seemed to work best. To cut it, start with a really light scribe line, just guiding the knife without much pressure, and follow the small steps that are just above and below the main molding indent for the filter cutout. That way you can get a good straight line. Keep going over it, without a lot of pressure, and after a dozen strokes or so, it will cut through. If you put a lot of pressure on it, it is really hard to keep the line straight. Just my observations, and hope it helps someone.