Buy genuine Perkins fuel filters | Perkins Fuel filters and pre-fuel filters help keep the diesel fuel that powers your Perkins engine as clean as possible. Their role is vital in removing the contamination that could result in a loss of power, excessive smoke, higher emissions, or in a worst case expensive damage to the fuel pump and injectors. Filtration | Perkins Engines Fuel filters aid engine efficiency. Changing your Perkins fuel filters needs to be part of your maintenance regime. The fuel filter ensures that the fuel entering the chamber is as clean as possible. The consequences of contaminated fuel include fuel injection pump failure, dirty and blocked nozzles, excessive smoke and reduced engine performance.