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Yes I already tried doin a search but does anyone know what size K&N filter you need to put on a AEM CAI?? My filter is came all messed up in the box and now since I got some money I want to get a new filter ASAP. Please help!!!

 
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It's a 3" insert on the filter, the part that goes on the intake pipe. But I think the filter itself is either 5 or 6 inches.

 
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if no one knows, my only suggestion would be to take the filter to the store to compare.

 
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Would any one know what is the cheapest place to buy a K&N cone filter?

 
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I belive this is the part you are looking for. Double check on the front (or maybe its on the 2nd page) of the instructions that came with the intake. It has a chart that lists all of the parts and thier coresponding numbers that came with the kit. If the part number doesn't match up to the link I gave you, match it with one of these.

 
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Not sure of the size, but why wouldnt you just send the defective part back? They screwed up, they should pay...

 
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does anyone know if that apex'i filter works, like it says. is it any better then the k&n filter?