Durostar DS4400E Natural Gas / Propane Conversion Kit<div style="text-align: left;"><strong>[Product Information]</strong><br><ul><li>Run on natural gas， low pressure propane or gasoline</li><li>Additional parts sold separately to run on portable propane tank (Part Numbers:SEK-05A or SEK-05-12A)</li><li>FOR SINGLE CYLINDER ENGINES ONLY</li><li>Frame modification. The air cleaner will be pushed outwards about 1-1/4” and may interfere with the frame.</li></ul></div><img src="http://ecx.images-amazon.com/images/I/418DcbS-PhL.jpg" noproxy>