If you're looking for a top-quality fuel filter cartridge that will keep your engine running clean and efficient, look no further than the Donaldson P550908. This cartridge is designed specifically for 6.7 Cummins engines from 2007.5 to 2009, and it does an excellent job of removing harmful contaminants from your fuel system. It also prevents premature injector and pump wear, and delivers clean fuel to your engine. Trusted by OEMs, the Donaldson P550908 is the perfect choice for anyone who wants the best possible performance from their engine.