Engine Fuel Filter by Hastings. Fuel Spin-on Element. Dirty fuel is a fact of life. Even with the development of cleaner-burning fuels, contaminants are still a major concern when it comes to fuel systems. This filter is designed to protect fuel system components, such as injection pumps and injectors, from damaging contaminants, including water, bacteria, non-combustible materials, wax, and tar-like contaminants. It's pressure tested to ensure long-lasting and reliable operation.