Omnitek Engineering Corp. develops and sells technology to convert diesel engines to an alternative fuel, natural gas engines, and complementary products in the United States and internationally. The company offers conversion kits for converting diesel engines to run on an alternative fuel, including compressed, liquefied, and renewable natural gas, as well as liquid petroleum gas; natural gas engines and components; and high-pressure natural gas coalescing filters. Its products are used for stationary applications; and the transportation market, such as light commercial vehicles, minibuses, heavy-duty trucks, and municipal buses, as well as rail and marine applications.