***NOTE***, DUE TO AVAILABILITY, THE KIT MAY COME WITH A DIFFERENT BRAND REGULATOR INSTEAD OF THE GARRETSON AS SHOWN*** APPLICATION: LOW PRESSURE PROPANE/NATURAL GAS CONVERSION FOR DuroStar DS4000S Kit will allow your engine to run on low pressure propane, low pressure natural gas or gasoline. New, super thin venturi adapter now allows for installation with NO modificationAlternative fuel supply line can be run through the oil fill door so case modification is not required. MODIFICATION IS NOT REQUIRED FOR FITMENT MAXIMUM INLET PRESSURE: 13.86" WC (0.5psi) Benefits of alternative fuelGenerally cheaper than gasoline and dieselClean fuel, low impact on the environment and your engine (low carbon, air/engine stay clean)Alternative fuels have an unlimited shelf life and will not gum up or degrade componentsFuel components are built for long life and are easy to maintain or rebuild FREE SHIPPING TO THE LOWER 48 STATES- We have thousands of parts in stock, if you do not see the part you need!Feel free to ask us about conversion kits for almost anything including trucks, cars, generators, tractors, boats, motorcycles, RVs etc. We can build a kit to convert almost any engine! WARNING: This product can expose you to chemicals including lead and lead compounds, which are known to the state of California to cause cancer. www.P65Warnings.ca.gov. WARNING: These products contain a chemical known to the state of California to cause cancer and birth defects or reproductive harm. www.P65Warnings.ca.gov. ***NOTE***, DUE TO AVAILABILITY, THE KIT MAY COME WITH A DIFFERENT BRAND REGULATOR INSTEAD OF THE GARRETSON AS SHOWN***