Fits: 2005–2010 Dodge Ram 3500 2005–2010 Dodge Ram 2500 aFe42-12032Fuel Air SeparatorsThe diesel fuel in your truck contains contaminants dirt, water and air/vapor which is reducing power and damaging your diesel fuel injectors. aFe's POWER DFS780 Diesel Fuel System, with its patent-pending design, is capable of removing power-robbing debris such as air, water and other contaminants. The DFS780 also boosts fuel pressure ensuring constant availability for the high-pressure pump, improving throttle response and horsepower at all RPMs.aFe DFS 780 fuel pumps are powered by your stock ignition and can be run independently or in parallel with the factory fuel pump. They feature helical bronze spur gears that are more forgiving of contaminants than steel gears and they run quieter than normal straight-cut gears. The billet aluminum manifold holds the fuel pump and houses the clear high-impact polycarbonate sight glass for visual inspection of fuel. These fuel pumps are supplied with a plug-and-play wiring harness with Deutsch weather-proof connectors; no cutting or modification is required for installation. High-quality Viton® seals are used, making them compatible with both diesel and biodiesel fuels.