Another option for the Stihl pre-filter

[Outlaw5.0]

I just happened to find a good higher flow option for a Stihl pre-filter, its from the Briggs and Stratton 6.5-7hp Intek OHV engines. The airfilter has a green foam pre-filter that flows more air than the Stihl faberic version. Just cut it to fit and your set to go.

 

[motoroilmccall]

Usually higher flow is due to less restriction, caused by looser media which lets in larger dirt particles. I'm not gonna waste a nice saw by using a free'er flowing filter. K&N does this, and talk to a good diesel guy, they'll tell you what happens when you run them extended periods of time, kaboom. A filter from a lawn mover doesn't have to deal with saw dust trying to get in the cylinder, so it can afford to be a little more open.

 

[Locoweed]

There is a legion of K&N guys that aren't going to like you.

 

[Frank Boyer]

There are a legion of people with diesel problems from K&N's. Ask any factory field service rep.

 

[Outlaw5.0]

Guys you still keep the stock air filter itself, this is just the pre-filter that slips over the airfilter. Lawn mowers are even going to more restrictive filters due to dust, almost all of them use pre-filters now.