RV owners and generator mechanics, if your Onan or Cummins RV generator is running rough or won't start, a faulty carburetor might be the culprit. This LOOFU replacement carb is designed to directly replace part numbers 146-0665, 146-0578, and 146-0632. It's compatible with models like the Onan NHE (beginning with Spec K) and NHD (Spec F-M) generators – but always double-check your generator's model and spec number to be 100% sure! This is a brand new, high-quality carburetor that comes with the necessary mounting gaskets for installation. Each unit is tested before shipping to ensure it works properly. Swapping out an old, gummed-up carburetor with this fresh one can restore smooth, reliable operation to your generator, ensuring you have power when you need it on the road. A great, cost-effective alternative to OEM parts for keeping your RV adventures powered up. Installation is straightforward for those with mechanical experience.