New Pack of 5 Snap In Primer Bulb fit for Stihl Homeliter Ryobi Echo Walbro Trimmer Zama Mcculloch Poulan Weed Eater Mtd 791-683974B Ryobi 683974B Oregon 49-088-0
It suitable for the majority of walbro carburetor and zama carburetor. it is used at trimmer blower Chainsaw and other mashine.The brand  such as sears, echo, troy bilt, weed eater, ryobi, stihl, ryan mcculloch, craftsman, husqvarna, and other more.your primer bulb must look like the one shown and be made onto the black plastic unit. If yours is held on with a metal plate with 2 screws, this is not the bulb for you. But if it's on a black plastic unit, clips into place with the 2 little 'ears' on the side and has two fuel line fittings on the under side, this will work for your application.This is NON original aftermarket parts, you will receive exactly showed on the picture, please check the pictures for compatibility before ordering it, we have the great confidence with the quality of our parts and provide 3months warranty too