K&N filters and the Coast Guard..
 

are they CG approved? can you get in trouble if you run them without approval?? I know most of the blower guys run them.....but the only one thats cg approved is the small one...

Coast Guard approved air filters will say so on them.

So the nice big high flow K&N's are illegal???

Jeg's and Summit both offer a K&N that is C.G.-approved.

Mine said CC approved on the box but no where on the unit itself. I figured that would be a problem if inspected.

Yeah but its a little bitty one!

Yeah, I know. I'm looking around to find a C.G.-approved arrestor setup that will flow enough for my motors. I lose 50 horsepower just by putting on the flame arrestor that I have now.

I like the larger oval ones!!!

Took mine off my 540s... they didn't flow enough. And it was stamped USCG Approved on the metal top. Also on the rubber on the little filter. The larger ones aren't.
I switched to Eddie Marine 10X5 stainless arrestors:)

hell this one says mercury on it, what else can they say

Asked the folks at BDS about the k&n's and they told me that all the filters are now cg approved, I think got the approval in Jan or Feb this year? From what I can recall on the dates.

I've stacked a bunch of standard Merc F/A's on top of each other before.

The little "normal" 330 sized arrestor. Those are give-aways from the local boat hop up shop. They have no use for them.

Cut the top out with a nibbler, leaving enough rim to poprivet it to the bottom of the one you'll put on top of it. Cut the bottom out of the next one the same way and put a bead of 4200 black on the rim and sandwich em together and poprivet them. The 4200 is just to keep them from rattling - silicone will melt after a while from the gasoline - use 4200.

I made two QUAD stacks of these for a bud running dual carbs. He liked the look. Still running them.

They seem to work very well.

And they re "made from" USCG approved pieces.

Eddie Marine and some of the K&N's are specifically USCG Approved, containing a designation stamped in the housing, or on the filter/arrestor itself. If it's not there, USCG will write the citation and basically end your day of boating. That's typically one of the first things they check every time I've been stopped.