EPS Air Filter Kit (Stihl 500 & 661)

This air filter kit includes one filter cage (Egan Performance Saws, made in USA) and one pre-oiled Uni Filter (CF 0690 - made in Australia), as well as one o-ring that fits around the knob that secures the cover to the saw.  (See photos showing how to install this o-ring on the knob) This kit is designed to fit under the OEM air filter cover on Stihl models 500 and 661.  Testing has shown that the Uni Filter does a better job of filtering out fine particulates than the OEM filter, while also improving performance. Please refer to the video below for proper installation tips. And note that on 661s, the round black plastic piece that's underneath the oem filter will need to be removed prior to installing this filter kit. Please Note:  This is considered a 'larger' item.  Only two 'larger' items can ship in our standard package.  If you order more than 2 of these types of items, or other items in addition to them, there will be additional shipping charges, which you will be emailed an invoice for. (This note is in the product description of all of our larger items.) Back orders will be filled in the order that they are received.  Please allow up to 2-6 weeks (typically less) for item is Out of Stock.