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Apr 21, 2011 | 07:07 PM

NR5P

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air filter question

I'm trying to find what air filter kit I have I believe it would be considered stage 2? The air filter is round says harley davidson on it and is a dry cloth filter says do not oil. Also says harley davidson air cleaner covers only and I have a football aircleaner cover that is open in the back. So this is a harley davidson stage 2 kit I guess? Can I wash the filter? Final question is what part number is the k&n filter for this? I hope this is enough info

Apr 21, 2011 | 07:12 PM

Squirrel67

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From: 3rd Rock

Sounds like a HD SE stage one to me and the K&N replacement is #0800.

Apr 21, 2011 | 07:47 PM

NR5P

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thanks that looks right. I guess I need to do some searching and find out what stage 2 is. I figured stage 1 was stock and stage 2 was the upgrade

Apr 21, 2011 | 08:09 PM

freddyttt

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From: New Jersey

Not sure the difference between stage 2 and 1 but stage 1 is not stock.

Apr 22, 2011 | 10:54 AM

Panthers65

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on the Big Sucker kits, Stage one is a high-flow filter same size is stock, and the stage two is the same high flow filter in a larger size.

Apr 22, 2011 | 11:17 AM

BoxOfCohibas

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From: Maryland

HD SE Heavy Breather

Is the Screamen Eagle Heavy Breather considered a stage 2?

Apr 23, 2011 | 03:21 AM

Foxster

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From: Suffolk, England

The problem is that there is no real definition of what stage-2 is for air cleaners. Vaguely, a stage-1 A/C is one that flows enough to match a more open exhaust. Equally vaguely, a stage-2 A/C is one that flows enough for an open exhaust and some higher lift cams. There's no numbers out there for either in terms of CFMs.

Most aftermarket A/Cs (other than fashion accessiories) flow enough for stage-1, especially if they take some flavor of a K&N filter. If you have a stage-2+ engine then you just need to think about something a bit fatter.