The carburetor on my Onan MicroQuiet RV QG 4000 (4KYFA26100L) suddenly stopped working despite using a fuel stabilizer and regularly moving the alternator. I was shocked to learn that an OEM replacement would cost me over $350 so I tried two different types of aerosol carburetor cleaners for a few days hoping the solvents would fix the problem but this they didn't. I found this unit and decided that for the price it was worth replacing the faulty carburetor myself. This afternoon I was able to remove the original carburetor and replace it with this carburetor and was thrilled to hear my alternator came back to life immediately after installing and testing it! Thank you Pathfinder Auto for making this product available!